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Local defect and mid-gap state analysis of GaN using monochromated EELS combined with nanodiffraction and atomic-resolution imaging
Description/Abstract:
Enhancement of energy resolution due to evolution of monochromators has made electron energy loss spectroscopy (EELS) in transmission ele...
Keyword:
4D-STEM
,
ABF-STEM
,
EELS
,
GaN
,
HAADF-STEM
,
HAXPES
, and
defect
Resource Type:
Article
Author:
Shunsuke Yamashita
,
Sei Fukushima
,
Jun Kikkawa
,
Ryoji Arai
,
Yuya Kanitani
,
Koji Kimoto
, and
Yoshihiro Kudo
Journal:
APL Materials
Date Uploaded:
19/03/2024
Suppression of Inhomogeneous Plastic Deformation in Medium-Carbon Tempered Martensite Steel
Description/Abstract:
Lüders phenomenon is one type of inhomogeneous plastic deformation occurring in the elas-tic-to-plastic transition region, and it is an u...
Keyword:
Lüders deformation
,
digital image correlation
,
inhomogeneous plastic deformation
,
medium-carbon steel
, and
tempering
Resource Type:
Article
Author:
Hai Qiu
,
Rintaro Ueji
, and
Tadanobu Inoue
Journal:
Metals
Date Uploaded:
19/03/2024
Suppression of High Threshold Voltage for Boron-Doped Diamond MOSFETs
Description/Abstract:
In this work, we focus on resolving one of great issues of high threshold voltage (VTH) values for the boron-doped diamond (B-diamond) m...
Keyword:
Boron-doped diamond
Resource Type:
Article
Author:
Jiangwei Liu
,
Tokuyuki Teraji
,
Bo Da
, and
Yasuo Koide
Journal:
IEEE Transactions on Electron Devices
Date Uploaded:
19/03/2024
Visualization and evaluation of lithium diffusion at grain boundaries in Li<sub>0.29</sub>La<sub>0.57</sub>TiO<sub>3</sub> solid electrolytes using secondary ion mass spectrometry
Description/Abstract:
Understanding Li diffusion at the interfaces in solid-state Li batteries is essential to improving their performance (e.g., rate capabili...
Keyword:
Diffusivity
,
Isotope exchange
,
Perovskite
,
Solid electrolyte
, and
TOF-SIMS
Resource Type:
Article
Author:
Gen Hasegawa
,
Naoaki Kuwata
,
Tsuyoshi Ohnishi
, and
Kazunori Takada
Journal:
Journal of Materials Chemistry A
Date Uploaded:
19/03/2024
Atomic position and the chemical state of an active Sn dopant for Sn-doped β-Ga2O3(001)
Description/Abstract:
Snドープ β-Ga2O3(001)のドーパントの原子位置を光電子ホログラフィ法により明らかにした。
Keyword:
Ga2O3
,
b-Ga2O3
, and
dopant
Resource Type:
Article
Author:
Yuhua Tsai
,
Masaaki Kobata
,
Tatsuo Fukuda
,
Hajime Tanida
,
Toru Kobayashi
, and
Yoshiyuki Yamashita
Journal:
Applied Physics Letters
Date Uploaded:
19/03/2024
Understanding Complex Interplay among Different Instabilities in Multiferroic BiMn7O12 Using 57Fe Probe Mössbauer Spectroscopy
Description/Abstract:
Here, we report the results of a Mössbauer study on hyperfine electrical and magnetic interactions in quadruple perovskite BiMn7O12 doped...
Keyword:
BiMn7O12
,
high-pressure synthesis
, and
quadruple perovskites
Resource Type:
Article
Author:
Iana S. Soboleva
,
Vladimir I. Nitsenko
,
Alexey V. Sobolev
,
Maria N. Smirnova
,
Alexei A. Belik
, and
Igor A. Presniakov
Journal:
International Journal of Molecular Sciences
Date Uploaded:
19/03/2024
Effect of defects on Q factors of single-crystal diamond MEMS resonators
Description/Abstract:
A resonator with a high Q factor is generally pursued in the single-crystal diamond (SCD) microelectromechanical system (MEMS) for high-p...
Keyword:
Diamond, MEMS, Q factor
Resource Type:
Article
Author:
Zilong Zhang
,
Guo Chen
,
Keyun Gu
,
Satoshi Koizumi
, and
Meiyong Liao
Journal:
Functional diamond
Date Uploaded:
05/03/2024
Mg–Zn–Cl-Integrated Functional Interface for Enhancing the Cycle Life of Mg Electrodes
Description/Abstract:
Herein, we adopted surface engineering to address this issue by alleviating the passivation characteristics of reductive Mg electrodes. A...
Keyword:
Interface
,
Magnesium electrode
,
Separator
,
Short-circuit
, and
Surface modification
Resource Type:
Article
Author:
Toshihiko Mandai
,
Umi Tanaka
, and
Mariko Watanabe
Journal:
Energy Storage Materials
Date Uploaded:
05/03/2024
Large-scale DFT calculations of multi-component glass systems (SiO2)0.70(Al2O3)0.13(XO)0.17 (X = Mg, Ca, Sr, Ba) : Accuracy of classical force fields
Description/Abstract:
Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, severa...
Keyword:
Classical force fields
,
First-principles calculations
,
Large-scale DFT
,
Molecular dynamics simulations
, and
Multi-component glass
Resource Type:
Article
Author:
Atsushi Tanaka
,
Atsuki Saito
,
Takashi Murata
,
Ayako Nakata
, and
Tsuyoshi Miyazaki
Journal:
Journal of Non-Crystalline Solids
Date Uploaded:
05/03/2024
2023 Roadmap on molecular modelling of electrochemical energy materials
Description/Abstract:
Overall, this roadmap originating from 20 groups in 11 countries serves as a gateway for both the experts and the beginners to have a qui...
Keyword:
density-functional theory
,
electrocatalysis
,
electrochemical energy storage
,
electrochemical interfaces
,
machine learning
, and
molecular dynamics simulation
Resource Type:
Article
Author:
Chao Zhang
,
Jun Cheng
,
Yiming Chen
,
Maria K Y Chan
,
Qiong Cai
,
Rodrigo P Carvalho
,
Cleber F N Marchiori
,
Daniel Brandell
,
C Moyses Araujo
,
Ming Chen
,
Xiangyu Ji
,
Guang Feng
,
Kateryna Goloviznina
,
Alessandra Serva
,
Mathieu Salanne
,
Toshihiko Mandai
,
Tomooki Hosaka
,
Mirna Alhanash
,
Patrik Johansson
,
Yun-Ze Qiu
,
Hai Xiao
,
Michael Eikerling
,
Ryosuke Jinnouchi
,
Marko M Melander
,
Georg Kastlunger
,
Assil Bouzid
,
Alfredo Pasquarello
,
Seung-Jae Shin
,
Minho M Kim
,
Hyungjun Kim
,
Kathleen Schwarz
, and
Ravishankar Sundararaman
Journal:
Journal of Physics-Energy
Date Uploaded:
05/03/2024
A Rhombic Dodecahedral Honeycomb Structure with Cation Vacancy Ordering in a !‑Ga2O3 Crystal
Description/Abstract:
Crystal structure of a γ-Ga2O3 layer grown epitaxially on an MgO substrate by a vapor phase transport method was investigated by transmis...
Keyword:
crystal structure
and
gamma-Ga2O3
Resource Type:
Article
Author:
Masanori Mitome
,
Shigemi Kohiki
,
Takuro Nagai
,
Keiji Kurashima
,
Koji Kimoto
, and
Yoshio Bando
Journal:
CRYSTAL GROWTH & DESIGN
Date Uploaded:
05/03/2024
Element discrimination in a hexagonal boron nitride nanosheet by aberration corrected transmission electron microscopy
Description/Abstract:
Boron nitride nanosheets prepared by an exfoliation technique were observed by aberration corrected transmission electron microscopy at ...
Keyword:
Aberration corrector
,
Boron nitride
,
High resolution
, and
Nanosheet
Resource Type:
Article
Author:
Masanori Mitome
,
Hidetaka Sawada
,
Yukihito Kondo
,
Yasumasa Tanishiro
, and
Kunio Takayanagi
Journal:
ULTRAMICROSCOPY
Date Uploaded:
04/03/2024
Ionic Liquid Interface as a Cell Scaffold
Description/Abstract:
In sharp contrast to conventional solid/hydrogel platforms, water-immiscible liquids, such as perfluorocarbons and silicones, allow the a...
Keyword:
cell culture
,
gels
,
ionic liquid
,
liquid interface
,
mechanobiology
,
phosphonium
, and
stem cell
Resource Type:
Article
Author:
Takeshi Ueki
,
Koichiro Uto
,
Shota Yamamoto
,
Ryota Tamate
,
Yuji Kamiyama
,
Xiaofang Jia
,
Hidenori Noguchi
,
Kosuke Minami
,
Katsuhiko Ariga
,
Hongxin Wang
, and
Jun Nakanishi
Journal:
Advanced Materials
Date Uploaded:
04/03/2024
Ultrathin specimen preparation by a low energy Ar ion milling method
Description/Abstract:
An ultra low energy ion milling method was used to prepare ultrathin specimen for transmission electron microscope observation. The sampl...
Keyword:
(Zn, Cr) Te
,
Ar-ion milling
,
gamma-Ga2O3
,
low-energy ion beam
,
sample preparation
, and
ultrathin specimen
Resource Type:
Article
Author:
Masanori Mitome
Journal:
MICROSCOPY (JOURNAL OF ELECTRON MICROSCOPY)
Date Uploaded:
04/03/2024
An efficient cathode electrocatalyst for anion exchange membrane water electrolyzer
Description/Abstract:
A high performance and durable electrocatalyst for the cathodic hydrogen evolution reaction (HER) in anion exchange membrane (AEM) water ...
Keyword:
Anion exchange membrane water electrolyzer
,
Density functional theory
,
Hierarchical MoS2
,
In-situ Raman analysis
, and
Pt–C core-shell
Resource Type:
Article
Author:
Shanmugam Ramakrishnan
,
Subramanian Vijayapradeep
,
Selva Chandrasekaran Selvaraj
,
Jian Huang
,
S.C. Karthikeyan
,
Rambabu Gutru
,
Natarajan Logeshwaran
,
Tsuyoshi Miyazaki
,
Mohamed Mamlouk
, and
Dong Jin Yoo
Journal:
Carbon
Date Uploaded:
04/03/2024
Latent ion tracks were finally observed in diamond
Description/Abstract:
Injecting high-energy heavy ions in the electronic stopping regime into solids can create cylindrical damage zones calledlatention tracks...
Keyword:
C60 ion
,
diamond
,
ion track
,
transmission electron microscopy
, and
velocity effect
Resource Type:
Article
Author:
H. Amekura
,
A. Chettah
,
K. Narumi
,
A. Chiba
,
Y. Hirano
,
K. Yamada
,
S. Yamamoto
,
A. A. Leino
,
F. Djurabekova
,
K. Nordlund
,
N. Ishikawa
,
N. Okubo
, and
Y. Saitoh
Journal:
Nature Communications
Date Uploaded:
04/03/2024
Different Local Structures of Mo and Nb Polyhedra in the Oxide-Ion-Conducting Hexagonal Perovskite-Related Oxide Ba<sub>3</sub>MoNbO<sub>8.5</sub> Revealed by <sup>95</sup>Mo and <sup>93</sup>Nb NMR Measurements
Description/Abstract:
The oxide-ion conductor Ba3MoNbO8.5, the oxide-ion and proton conductor Ba7Nb4MoO20, and their hexagonal perovskite-related oxides are im...
Keyword:
Fuel Cell
,
Gas Sensor
, and
Oxygen Separation
Resource Type:
Article
Author:
Masataka Tansho
,
Atsushi Goto
,
Shinobu Ohki
,
Yuuki Mogami
,
Yuichi Sakuda
,
Yuta Yasui
,
Taito Murakami
,
Kotaro Fujii
,
Takahiro Iijima
, and
Masatomo Yashima
Journal:
The Journal of Physical Chemistry C
Date Uploaded:
04/03/2024
Date Modified:
05/03/2024
高速重イオン衝突による 固体中に埋め込まれた金属ナノ粒子の楕円化変形(後編)
Description/Abstract:
前編では,固体中に埋め込まれた金属ナノ粒子が十数MeV以上の高速重イオン照射により,楕円形さらにナノロッドに変形する現象について紹介した.そして“変形が起こる/起こらない”の条件が,真空中のナノ粒子モデルや電子励起(非弾性)熱スパイク(i-TS)モデルを用いて,ナノ粒子の融...
Keyword:
metal nanoparticle
,
shape elongation
, and
swift heavy ion
Resource Type:
Article
Author:
雨倉 宏
Journal:
しょうとつ
Date Uploaded:
04/03/2024
高速重イオン衝突による 固体中に埋め込まれた金属ナノ粒子の楕円化変形(前編)
Description/Abstract:
シリカガラスなどの固体中に埋め込まれて形成された金属ナノ粒子に対してエネルギー十数MeV以上の高エネルギー重イオン(高速重イオン)を照射すると,照射前はほぼ球形だったナノ粒子がイオンビームと同方向に伸び,葉巻型の回転楕円体(prolate spheroid)のような形に変形...
Keyword:
metal nanoparticle
,
shape elongation
, and
swift heavy ion
Resource Type:
Article
Author:
雨倉 宏
Journal:
しょうとつ
Date Uploaded:
04/03/2024
Transport of intensity equation method and its applications
Description/Abstract:
A phase retrieval technique based on a transport of intensity equation (TIE) is one of the defocus series reconstruction techniques in mi...
Keyword:
boundary conditions
,
phase retrieval
,
quantitative measurements
, and
transport of intensity equation
Resource Type:
Article
Author:
Masanori Mitome
Journal:
Microscopy
Date Uploaded:
04/03/2024
Lateral Heterometal Junction Rectifier Fabricated by Sequential Transmetallation of Coordination Nanosheet
Description/Abstract:
Heterostructures of two-dimensional materials realise novel and enhanced physical phenomena, making them attractive research targets. Com...
Keyword:
Coordination Nanosheet
,
Lateral Heterojunction
, and
Transmetallation
Resource Type:
Article
Author:
Choon Meng Tan
,
Naoya Fukui
,
Kenji Takada
,
Hiroaki Maeda
,
Ekaterina Selezneva
,
Cédric Bourgès
,
Hiroyasu Masunaga
,
Sono Sasaki
,
Kazuhito Tsukagoshi
,
Takao Mori
,
Henning Sirringhaus
, and
Hiroshi Nishihara
Journal:
Angewandte Chemie International Edition
Date Uploaded:
01/03/2024
Deformation microstructures in shock-compressed single crystal and powdered rutile
Description/Abstract:
Shock recovery experiments were performed using a single-stage propellant on single crystals 14 and powdered rutile to investigate the he...
Keyword:
Defect structures
,
Deformation
,
Rutile
, and
Shock recovery experiments
Resource Type:
Article
Author:
Yuhei UMEDA
,
Yuma NAGAI
,
Naotaka TOMIOKA
,
Toshimori SEKINE
,
Masashi MIYAKAWA
,
Takamichi KOBAYASHI
,
Hitoshi YUSA
, and
Takuo OKUCHI
Journal:
Journal of Mineralogical and Petrological Sciences
Date Uploaded:
29/02/2024
Interaction of vascular endothelial cells with hydrophilic fullerene nanoarchitectured structures in 2D and 3D environments
Description/Abstract:
We detailed the preparation of hydrophilic self-assembled fullerenes by the liquid-liquid interfacial precipitation method and hydrophili...
Keyword:
Self-assembled fullerene
,
endothelial cell
,
nanotube
,
nanowhisker
,
self-healing hydrogel
, and
vascularization
Resource Type:
Article
Author:
Tsai-Yu Chen
,
Kun-Chih Cheng
,
Pei-Syuan Yang
,
Lok Kumar Shrestha
,
Katsuhiko Ariga
, and
Shan-Hui Hsu
Journal:
Science and Technology of Advanced Materials
Date Uploaded:
29/02/2024
Fine-tuning of plasmonics by Au@AuY/Au core-shell nanoparticle monolayer for enhancement of third-order nonlinearity
Description/Abstract:
A novel self-assembled Au@AuY-core/Au-shell nanoparticle (Au@AuY/Au NP) monolayer is proposed for the fine-tuning of plasmonics and enhan...
Keyword:
core-shell alloy nanostructure
,
localized surface plasmon resonance
,
plasmonics
,
sequential ion implantation
, and
third-order nonlinerity
Resource Type:
Article
Author:
Yong Liu
,
Chi Pang
,
Hiroshi Amekura
,
Thomas Schumann
,
Peng Liu
,
Zhixian Wei
,
Haocheng Liu
, and
Rang Li
Journal:
APPLIED SURFACE SCIENCE
Date Uploaded:
28/02/2024
The graphene-on-diamond structure with Ni-catalyzed under high temperature
Description/Abstract:
Graphene-on-diamond (GOD) composite structure has been attracting considerable attention due to the unique features for all carbon sp3-s...
Keyword:
diamond
Resource Type:
Article
Author:
Xiaolu Yuan
,
Jinlong Liu
,
Jiangwei Liu
,
Junjun Wei
,
Liangxian Chen
, and
Chengming Li
Journal:
Science talks
Date Uploaded:
27/02/2024
Layer-by-layer designer nanoarchitectonics for physical and chemical communications in functional materials
Description/Abstract:
This feature article explores the possibility of constructing advanced functional systems based on recent examples of layer-by-layer asse...
Keyword:
Communications
,
Functional materials
,
Interface
,
Layer-by-layer assembly
,
Nanoarchitectonics
, and
Thin films
Resource Type:
Article
Author:
Katsuhiko Ariga
,
Jingwen Song
, and
Kohsaku Kawakami
Journal:
Chemical Communications
Date Uploaded:
26/02/2024
Quantitative measurement of figure of merit for transverse thermoelectric conversion in Fe/Pt metallic multilayers
Description/Abstract:
This study presents a measurement method for determining the figure of merit for transverse thermoelectric conversion (zT) in thin film f...
Keyword:
anomalous Nernst effect
,
dimensionless figure of merit
,
spin caloritronics
, and
time-domain thermoreflectance
Resource Type:
Article
Author:
Takumi Yamazaki
,
Takamasa Hirai
,
Takashi Yagi
,
Yuichiro Yamashita
,
Ken-ichi Uchida
,
Takeshi Seki
, and
Koki Takanashi
Journal:
Physical Review Applied
Date Uploaded:
26/02/2024
Date Modified:
26/02/2024
2D Materials Nanoarchitectonics for 3D Structures/Functions
Description/Abstract:
According to these backgrounds, this review paper is organized as follows. Introduction is fol-lowed by a summary of the three issues; (i...
Keyword:
covalent organic framework
,
liquid crystal
,
living cell
,
metal–organic framework
,
nanoarchitectonics
,
surface
, and
two dimension
Resource Type:
Article
Author:
Katsuhiko Ariga
Journal:
Materials
Date Uploaded:
26/02/2024
Perspective on nanoscale magnetic sensors using giant anomalous Hall effect in topological magnetic materials for read head application in magnetic recording
Description/Abstract:
Recent advances in the study of materials with topological electronic band structures have revealed magnetic materials exhibiting giant a...
Keyword:
Weyl semimetal
,
anomalous Hall effect
,
magnetic recording
,
magnetic sensors
,
read head
, and
topological materials
Resource Type:
Article
Author:
Tomoya Nakatani
,
Prabhanjan D. Kulkarni
,
Hirofumi Suto
,
Keisuke Masuda
,
Hitoshi Iwasaki
, and
Yuya Sakuraba
Journal:
Applied Physics Letters
Date Uploaded:
26/02/2024
Confined Space Nanoarchitectonics for Dynamic Functions and Molecular Machines
Description/Abstract:
This review paper discusses the nanoarchitectonics of confined space, which is a field for controlling functional materials and molecular...
Keyword:
confined space
,
covalent organic framework
,
dynamic function
,
metal–organic framework
,
molecular machine
,
nanoarchitectonics
, and
surface
Resource Type:
Article
Author:
Katsuhiko Ariga
Journal:
Micromachines
Date Uploaded:
26/02/2024
Statistical approach based on the Stoner-Wohlfarth model for the switching field in a misoriented magnet array
Description/Abstract:
Stoner‒Wohlfarth model (S‒W model) is used to explain the relationship between the external magnetic field and the magnetization reversal...
Keyword:
FePt granular film
and
Magnetizaition switching
Resource Type:
Article
Author:
Donghyeon Lee
,
Jungmin Park
,
Donghyeon Han
,
Suzuki Ippei
,
Takahashi Yukiko
,
Sujung Noh
,
Jisung Lee
,
JoonHyun Kwon
,
Hansaem Lee
, and
Sanghoon Kim
Journal:
Physical Review Applied
Date Uploaded:
21/02/2024
Unsupervised machine learning combined with 4D scanning transmission electron microscopy for bimodal nanostructural analysis
Description/Abstract:
Unsupervised machine learning techniques have been combined with scanning transmission electron microscopy (STEM) to enable comprehensive...
Keyword:
4D-STEM
,
Hierachical Clustering
,
Metallic Glass
,
Non-negative Matrix Factorization
,
Scanning Transmission Electron Microscopy
, and
Unsupervised Machine Learning
Resource Type:
Article
Author:
Koji Kimoto
,
Jun Kikkawa
,
Koji Harano
,
Ovidiu Cretu
,
Yuki Shibazaki
, and
Fumihiko Uesugi
Journal:
Scientific Reports
Date Uploaded:
15/02/2024
オペランド水素顕微鏡による水素透過の可視化
Description/Abstract:
オペランド水素顕微鏡の開発とそれを用いた金属材料を透過する水素の可視化について、トピックスとして解説を書くよう依頼された。ステンレスの水素透過、局所透過の画像から、結晶粒ごとの水素の拡散係数と透過フラックスの算出、その結果から推測される構造とその中の水素の拡散モデルの提案に...
Keyword:
diffusion model
,
hydrogen permeation
,
hydrogen visualization
, and
stainless steel
Resource Type:
Article
Author:
板倉 明子
and
宮内 直弥
Journal:
金属
Date Uploaded:
14/02/2024
Near-interface electronic and magnetic states of insulator/Co2MnSi structures probed by hard x-ray photoemission combined with x-ray total reflection
Description/Abstract:
Depth-dependent electronic and magnetic states of AlOx and MgO capped Co2MnSi thin films were measured by using hard X-ray photoemission ...
Keyword:
HAXPES
,
SX-ARPES
,
X-ray total reflection
,
insulator/Co2MnSi heterostructures
, and
interface and bulk electronic and magnetic states
Resource Type:
Article
Author:
Shigenori Ueda
,
Yuichi Fujita
, and
Yuya Sakuraba
Journal:
PHYSICAL REVIEW B
Date Uploaded:
13/02/2024
Initial stage of InSb heteroepitaxial growth on GaAs (111)A: effect of thin InAs interlayers
Description/Abstract:
Molecular-beam epitaxy of InSb on the (111)A-oriented GaAs substrates has been studied using electron diffraction, x-ray diffraction, and...
Keyword:
GaAs
,
InAs
,
InSb
,
Metamorphic
, and
Molecular beam epitaxy
Resource Type:
Article
Author:
Akihiro Ohtake
and
Takaaki Mano
Journal:
Japanese Journal of Applied Physics
and
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
13/02/2024
Formation of electron traps in semiconducting polymers via a slow triple-encounter between trap precursor particles
Description/Abstract:
Already in 2012, Blom et al. reported (Nature Materials 2012, 11, 882) in semiconductingpolymers on a general electron-trap density of ≈ ...
Keyword:
Polymer light-emitting diodes
,
charge trap dynamics
,
device physics
,
electron trap
, and
semiconducting polymer
Resource Type:
Article
Author:
Mohammad Sedghi
,
Camilla Vael
,
Wei-Hsu Hu
,
Michael Bauer
,
Daniele Padula
,
Alessandro Landi
,
Mirko Lukovic
,
Matthias Diethelm
,
Gert-Jan Wetzelaer
,
Paul W. M. Blom
,
Frank Nüesch
, and
Roland Hany
Journal:
Science and Technology of Advanced Materials
Date Uploaded:
07/02/2024
緊急地震速報を利用した走査型トンネル顕微鏡実験中の地震対策
Description/Abstract:
Frequent earthquakes in Japan can be problematic for vibration-sensitive measurements. For example, in scanning tunneling microscope (STM...
Keyword:
Earthquake
,
Earthquake early warning
,
Scanning tunneling microscope
, and
Spectroscopic imaging
Resource Type:
Article
Author:
吉澤 俊介
Journal:
表面と真空
Date Uploaded:
07/02/2024
A membrane, pseudo-vertical p-i-n diamond detector
Description/Abstract:
We report on the membrane diamond detector, which consists of 5 μm-thick diamond p-i-n diodes and a dedicated front-end ASIC, fabricated ...
Keyword:
Diamond
,
Nuclear power plant
,
alpha particle
, and
gamma ray
Resource Type:
Article
Author:
Tetsuichi Kishishita
,
Kimiyoshi Ichikawa
,
Kazuya Tauchi
,
Masayoshi Shoji
,
Masayuki Hagiwara
,
Satoshi Koizumi
, and
Manobu M. Tanaka
Journal:
JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
and
Journal of Nuclear Science and Technology
Date Uploaded:
07/02/2024
Emerging trends in research and development on earth abundant materials for ammonia degradation coupled with H2 generation
Description/Abstract:
Ammonia, as an essential and economical fuel, is a key intermediate for the production of innumerable nitrogen-based compounds. Such comp...
Keyword:
Ammonia decomposition reaction (ADR)
,
Green fuel
,
Nitrogen reduction reaction (NRR)
,
catalytic oxidation
, and
non-noble metal
Resource Type:
Article
Author:
Zakiullah Zaidi
,
Kamlesha
,
Yesleen Gupta
,
Sandeep Singhai
,
Manish Mudgal
, and
Archana Singh
Journal:
Science and Technology of Advanced Materials
Date Uploaded:
07/02/2024
Visualization of Alternating Triangular Domains of Charge Density Waves in 2H-NbSe2 by Scanning Tunneling Microscopy
Description/Abstract:
The charge density wave (CDW) state of 2H-NbSe2 features commensurate domains separated by domain boundaries accompanied by phase slips k...
Keyword:
Charge density waves
,
Scanning tunneling microscopy
, and
Transition metal dichalcogenides
Resource Type:
Article
Author:
Shunsuke Yoshizawa
,
Keisuke Sagisaka
, and
Hideaki Sakata
Journal:
Physical Review Letters
Date Uploaded:
31/01/2024
Transport evidence for twin-boundary pinning of superconducting vortices in FeSe
Description/Abstract:
We provide bulk transport evidence for twin-boundary pinning of vortices in FeSe. We measure interlayer resistance in FeSe in magnetic fi...
Keyword:
FeSe
,
iron-based superconductor
,
twin boundary
, and
vortex pinning
Resource Type:
Article
Author:
Taichi Terashima
,
Hideaki Fujii
,
Yoshitaka Matsushita
,
Shinya Uji
,
Yuji Matsuda
,
Takasada Shibauchi
, and
Shigeru Kasahara
Journal:
Physical Review B
Date Uploaded:
31/01/2024
Date Modified:
31/01/2024
Phonon Lifetime Observation in Epitaxial ScN Film with Inelastic X-Ray Scattering Spectroscopy
Description/Abstract:
Phonon-phonon scattering dominates the thermal properties in nonmetallic materials, and it directly influences device performance in appl...
Keyword:
ScN
and
phonon
Resource Type:
Article
Author:
H. Uchiyama
,
Y. Oshima
,
R. Patterson
,
S. Iwamoto
,
J. Shiomi
, and
K. Shimamura
Journal:
PHYSICAL REVIEW LETTERS
Date Uploaded:
31/01/2024
Epitaxial lateral overgrowth of r-plane α-Ga2O3 with stripe masks along <-12-10>
Description/Abstract:
We demonstrated the epitaxial lateral overgrowth of (-1012) (r-plane) α-Ga2O3 using striped mask pattern along <-12-10>. α-Ga2O3 st...
Keyword:
ELO
,
HVPE
,
dislocation
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Shingo Yagyu
, and
Takashi Shinohe
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
Epitaxial growth of phase-pure e-Ga2O3 by halide vapor phase epitaxy
Description/Abstract:
The halide vapor phase epitaxy of e-Ga2O3 is demonstrated for the first time. The e-Ga2O3 films are grown on GaN (0001), AlN (0001), and ...
Keyword:
HVPE
,
ε-Ga2O3
, and
κ-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnación G. Víllora
,
Yoshitaka Matsushita
,
Satoshi Yamamoto
, and
Kiyoshi Shimamura
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
Hydride Vapor Phase Epitaxy and characterization of High-Quality ScN epilayers
Description/Abstract:
ScClxとNH3との反応によるHVPEでScNを育成した。成長速度は、原料分圧の増大に伴って最初は増加するが、やがて減少に転じ、最大成長速度は5um/h程度であった。基板は種々試みたが、サファイア(10-12)と(10-10)を用いたときに単一配向のScN(100)および...
Keyword:
HVPE
and
ScN
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnación G. Víllora
, and
Kiyoshi Shimamura
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
Rutile-type GexSn1−xO2 alloy layers lattice-matched to TiO2 substrates for device applications
Description/Abstract:
We report the characterization and application of mist-CVD-grown rutile-structured GexSn1−xO2 (x = ∼0.53) films lattice-matched to isostr...
Keyword:
GeO2
,
SnO2
, and
TiO2
Resource Type:
Article
Author:
Hitoshi Takane
,
Takayoshi Oshima
,
Takayuki Harada
,
Kentaro Kaneko
, and
Katsuhisa Tanaka
Journal:
Applied Physics Express
Date Uploaded:
30/01/2024
Date Modified:
01/02/2024
X線・中性子小角散乱法及び3次元アトムプローブ法による Cu-Ni-Si合金中のδNi2Si析出相の解析
Description/Abstract:
The strength of Cu-Ni-Si alloy can be improved by finely dispersing a Ni-Si-based compound as a precipitate into the Cu parent phase by h...
Keyword:
Corson alloy
,
atom probe tomography
, and
transmission electron microscopy
Resource Type:
Article
Author:
佐々木 宏和
,
秋谷 俊太
,
三原 邦照
,
大場 洋次郎
,
大沼 正人
,
埋橋 淳
, and
大久保 忠勝
Journal:
Journal of Japan Institute of Copper
Date Uploaded:
30/01/2024
Epitaxial lateral overgrowth of α-Ga2O3 by halide vapor phase epitaxy
Description/Abstract:
We demonstrated epitaxial lateral overgrowth of a-Ga2O3 by halide vapor phase epitaxy. We formed stripe patterned or triangular lattice d...
Keyword:
ELO
,
HVPE
,
dislocation
, and
α-Ga2O3
Resource Type:
Article
Author:
Y. Oshima
,
K. Kawara
,
T. Shinohe
,
T. Hitora
,
M. Kasu
, and
S. Fujita
Journal:
APL MATERIALS
Date Uploaded:
29/01/2024
Date Modified:
01/02/2024
Progress and challenges in the development of ultra-wide bandgap semiconductor α-Ga2O3 toward realizing power device applications
Description/Abstract:
パワー、およびUV応用を指向したα型酸化ガリウムの関連技術の現状と技術課題を俯瞰し、今後の展望を述べる。
Keyword:
epitaxy
,
power device
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
and
Elaheh Ahmadi
Journal:
APPLIED PHYSICS LETTERS
Date Uploaded:
29/01/2024
Date Modified:
01/02/2024
Materials issues and devices of α- and β-Ga2O3
Description/Abstract:
パワーデバイスに向けたα- および β- Ga2O3の材料およびデバイス開発の最新状況を概観する。
Keyword:
Ga2O3
,
epitaxy
, and
power device
Resource Type:
Article
Author:
Elaheh Ahmadi
and
Yuichi Oshima
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
29/01/2024
Date Modified:
01/02/2024
Permanent-magnet-based transverse thermoelectric generator with high fill factor driven by anomalous Nernst effect
Description/Abstract:
A transverse thermoelectric generator for magnetic-field-free and high-density power generation utilizing the anomalous Nernst effect is ...
Keyword:
Energy harvesting
,
Infrared imaging
,
Magnetic materials
,
Thermoelectric effects
, and
Thermoelectric generator
Resource Type:
Article
Author:
Fuyuki Ando
,
Takamasa Hirai
, and
Ken-ichi Uchida
Journal:
APL Energy
Date Uploaded:
26/01/2024
Anomalous Hall effect in the magnetic Weyl semimetal NdAlGe with plateaus observed at low temperatures
Description/Abstract:
In the RAl(Si,Ge) (R: lanthanides) family, both spatial inversion and time-reversal symmetries are broken. This may offer opportunities t...
Keyword:
Anomalous Hall effect, Topological material
Resource Type:
Article
Author:
Naoki Kikugawa
,
Shinya Uji
, and
Taichi Terashima
Journal:
PHYSICAL REVIEW B
Date Uploaded:
26/01/2024
Bulk Physical Properties of a Magnetic Weyl Semimetal Candidate NdAlGe Grown by a Laser Floating-Zone Method
Description/Abstract:
We report the successful growth of single crystals of a magnetic Weyl semimetal candidate NdAlGe with the space group I41md. The crystals...
Keyword:
NdAlGe
,
bulk physical properties
,
crystal growth
,
laser floating-zone technique
, and
magnetic Weyl semimetal
Resource Type:
Article
Author:
Naoki Kikugawa
,
Taichi Terashima
,
Takashi Kato
,
Momoko Hayashi
,
Hitoshi Yamaguchi
, and
Shinya Uji
Journal:
Inorganics
Date Uploaded:
26/01/2024
Single-Crystal Growth of a Cubic Laves-Phase Ferromagnet HoAl2 by a Laser Floating-Zone Method
Description/Abstract:
The successful growth of single crystals of a cubic Laves-phase material HoAl2 with the space group Fd-3m is reported. The crystals were ...
Keyword:
HoAl2
,
bulk physical properties
,
crystal growth
,
laser floating-zone technique
, and
magnetocaloric effect
Resource Type:
Article
Author:
Naoki Kikugawa
,
Takashi Kato
,
Momoko Hayashi
, and
Hitoshi Yamaguchi
Journal:
Crystals
Date Uploaded:
26/01/2024
Mechanical Properties of Ultra-Thin Nb3Sn Composite Wires
Description/Abstract:
Mechanical properties of such ultra-thin Nb3Sn wires were evaluated to determine the cabling parameters and mechanical analysis of twiste...
Keyword:
fracture strength
,
Nb3Sn
,
Young’s modulus
, and
tensile test
Resource Type:
Article
Author:
Michinaka Sugano
,
Akihiro Kikuchi
,
Hitoshi Kitaguchi
,
Gen Nishijima
, and
Tsuyoshi Yagai
Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Date Uploaded:
25/01/2024
Date Modified:
30/01/2024
Development of Super Fine Strand Nb3Al Cable for SuperKEKB Superconducting Sextupole Magnet System
Description/Abstract:
Along the beamlines of the SuperKEKB main rings, 218 conventional sextupole magnets are installed, and they are used for tuning the chrom...
Keyword:
Nb3Al
,
SuperKEKB
, and
極細線
Resource Type:
Article
Author:
Norihito Ohuchi
,
Akihiro Kikuchi
,
Masaru Yamamoto
,
Xudong Wang
,
Kiyosumi Tsuchiya
,
Kazuyuki Aoki
,
Yasushi Arimoto
,
Toshiyuki Oki
, and
Zhanguo Zong
Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Date Uploaded:
25/01/2024
Date Modified:
30/01/2024
Superconducting Properties of a Nb3Sn Bundle Cable Made of Ultra-Fine Wires
Description/Abstract:
We have been developing A15 cables made of ultra-fine wires for high-field superconducting magnets using react-and-wind (R&W) technology....
Keyword:
Nb3Sn
,
Superconducting Properties
, and
Ultra-Fine Wires
Resource Type:
Article
Author:
Xudong Wang
,
Kiyosumi Tsuchiya
,
Akio Terashima
,
Yasuo Iijima
, and
Akihiro Kikuchi
Journal:
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Date Uploaded:
25/01/2024
Date Modified:
30/01/2024
Strain‐Sensitive On‐Surface Ladderization by Non‐Dehydrogenative Heterocyclization
Description/Abstract:
On-surface cyclodehydrogenation recently became an important reaction to planarize π-conjugated molecules and oligomers. However, the hig...
Keyword:
non‐dehydrogenative heterocyclization
,
on-surface ladderization
, and
strain-sensitive
Resource Type:
Article
Author:
Yujing Ma
,
Kazuma Sugawara
,
Yusuke Ishigaki
,
Kewei Sun
,
Takanori Suzuki
, and
Shigeki Kawai
Journal:
Chemistry – A European Journal
Date Uploaded:
25/01/2024
Quantitative Evaluation of Nucleic Acid Degradability of Copper Alloy Surfaces and Its Correlation to Antibacterial Activity
Description/Abstract:
Copper (Cu) and its alloys have bactericidal activity known as “contact killing” with degradation of nucleic acids inside the bacteria, w...
Keyword:
DNA degradability
,
a swab method
,
antibacterial test
,
antimicrobial activities
, and
copper and copper alloys
Resource Type:
Article
Author:
Akiko Yamamoto
,
Shinji Tanaka
, and
Keiichiro Ohishi
Journal:
Antibiotics-Basel
Date Uploaded:
25/01/2024
Development of a Model System for Gas Cavity Formation Behavior of Magnesium Alloy Implantation
Description/Abstract:
Clinical applications of magnesium (Mg)-based screws have reported gas cavity formation in the surrounding tissue, which sometimes delays...
Keyword:
biocorrosion
,
biodegradable metals
,
hydrogen gas
,
in vitro evaluation
, and
magnesium alloys
Resource Type:
Article
Author:
Akiko Yamamoto
and
Akemi Kikuta
Journal:
ACS Biomaterials Science & Engineering
Date Uploaded:
25/01/2024
In vitro analysis of insoluble salt formation mechanism associated with Mg corrosion—variations depending on the diffusion environment in model tissue
Description/Abstract:
Magnesium (Mg) alloys have attracted attention as biodegradable metals, but the details of their corrosion behavior under biological env...
Keyword:
Raman spectroscopy
,
corrosion
,
in vitro model tissue
,
insoluble salt precipitation
, and
magnesium
Resource Type:
Article
Author:
Masanobu Hayashi
,
Akiko Yamamoto
,
Takayuki Aizawa
,
Yu Yusa
,
Yoshinaka Shimizu
, and
Yoshimichi Imai
Journal:
Biomedical Materials
Date Uploaded:
24/01/2024
Improvement of magnetic field detectivity in electrical 1/f noise-dominated tunnel magnetoresistive sensors by AC magnetic field modulation technique
Description/Abstract:
Suppression of 1/f noise in tunnel magnetoresistance (TMR) sensors is a central issue in the realization of magnetic field sensors with u...
Keyword:
1/f noise
,
magnetic sensor
,
noise
, and
tunnel magnetoresistance
Resource Type:
Article
Author:
Tomoya Nakatani
,
Hirofumi Suto
,
Prabhanjan D. Kulkarni
,
Hitoshi Iwasaki
, and
Yuya Sakuraba
Journal:
JOURNAL OF APPLIED PHYSICS
Date Uploaded:
23/01/2024
Date Modified:
16/02/2024
Chemical characterization of Corydalis chaerophylla D.C. extracts and preliminary evaluation of their in vitro and in vivo biological properties
Description/Abstract:
Genus Corydalis is a rich source of isoquinoline alkaloids having potential bioactivities. Corydalis chaerophylla collected from Nepal at...
Keyword:
Corydalis
,
bioactivities
,
chaerophylla
,
chemical analysis
, and
extraction
Resource Type:
Article
Author:
Binita Maharjan
,
Lok Kumar Shrestha
,
Jonathan P. Hill
,
Katsuhiko Ariga
,
Shyam Sharan Shrestha
,
Stefania Sut
,
Ram Lal Swagat Shrestha
, and
Stefano Dall’Acqua
Journal:
CHEMISTRY & BIODIVERSITY
Date Uploaded:
23/01/2024
Hybrid Transverse Magneto‐Thermoelectric Cooling in Artificially Tilted Multilayers
Description/Abstract:
In artificially tilted multilayers comprising two different conductors that are alternately and obliquely stacked, transverse thermoelect...
Keyword:
Ettingshausen effect
,
artificially tilted multilayers
,
lock-in thermography
,
magneto-Peltier effect
,
permanent magnets
, and
transverse thermoelectrics
Resource Type:
Article
Author:
Ken‐ichi Uchida
,
Takamasa Hirai
,
Fuyuki Ando
, and
Hossein Sepehri‐Amin
Journal:
Advanced Energy Materials
Date Uploaded:
23/01/2024
A highly-selective layer-by-layer membrane modified with polyethylenimine and graphene oxide for vanadium redox flow battery
Description/Abstract:
A selective composite membrane for vanadium redox flow battery (VRFB) was successfully prepared by layer-by-layer (LbL) technique using a...
Keyword:
Vanadium redox flow battery
,
graphene oxide
,
layer by layer modification
,
perfluorosulfonic acid membranes
, and
polyethyleneimine
Resource Type:
Article
Author:
Saidatul Sophia Sha’rani
,
Mohamed Mahmoud Nasef
,
Nurfatehah Wahyuny Che Jusoh
,
Eleen Dayana Mohamed Isa
, and
Roshafima Rasit Ali
Journal:
Science and Technology of Advanced Materials
Date Uploaded:
22/01/2024
Date Modified:
24/01/2024
Halide Vapor Phase Epitaxy of twin-free a-Ga2O3 on sapphire (0001) substrates
Description/Abstract:
The halide vapor phase epitaxy of a-Ga2O3 is demonstrated for the first time. The films are twin-free, heteroepitaxially grown on sapphir...
Keyword:
HVPE
and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnación G. Víllora
, and
Kiyoshi Shimamura
Journal:
APPLIED PHYSICS EXPRESS
Date Uploaded:
22/01/2024
Date Modified:
22/01/2024
Visualization of threading dislocations in an α-Ga2O3 epilayer by HCl gas etching
Description/Abstract:
Threading dislocations in a heteroepitaxial α-Ga2O3 film was visualized as etch pits on the surface. We found that etch pits were formed ...
Keyword:
dislocation
,
etching
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Shingo Yagyu
, and
Takashi Shinohe
Journal:
JOURNAL OF CRYSTAL GROWTH
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Quasi-heteroepitaxial growth of β-Ga2O3 on off-angled sapphire (0001) substrates by Halide Vapor Phase Epitaxy
Description/Abstract:
We demonstrate the high-speed growth of b-Ga2O3 epilayers on off-angled sapphire (0001) substrates by the halide vapor epitaxy. (-201) or...
Keyword:
heteroepitaxy
and
β-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Encarnaciόn G. Vίllora
, and
Kiyoshi Shimamura
Journal:
JOURNAL OF CRYSTAL GROWTH
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Rapid growth of α-Ga2O3 by HCl-boosted halide vapor phase epitaxy and effect of precursor supply conditions on crystal properties
Description/Abstract:
We investigated the effect of supply conditions of GaCl, O2, and additional HCl on the growth rate of (0001) alpha-Ga2O3 by halide vapor ...
Keyword:
HVPE
and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Katsuaki Kawara
,
Takayoshi Oshima
,
Mitsuru Okigawa
, and
Takashi Shinohe
Journal:
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Growth and etching characteristics of (001) β- Ga2O3 by plasma-assisted molecular beam epitaxy
Description/Abstract:
We investigated the growth characteristics of homoepitaxial (001) b-Ga2O3 by plasma-assisted molecular beam epitaxy.
Keyword:
MBE
and
β-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Elaheh Ahmadi
,
Stephen Kaun
,
Feng Wu
, and
James S Speck
Journal:
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
In-plane orientation control of (001) κ-Ga2O3 by epitaxial lateral overgrowth through a geometrical natural selection mechanism
Description/Abstract:
The present work demonstrates a new technique to solve the in-plane rotational domain problem. In the technique, κ-Ga2O3 was grown by epi...
Keyword:
ELO
,
HVPE
,
domain
,
ε-Ga2O3
, and
κ-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Katsuaki Kawara
,
Takayoshi Oshima
, and
Takashi Shinohe
Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Phase-controlled epitaxial lateral overgrowth of α-Ga2O3 by halide vapor phase epitaxy
Description/Abstract:
We investigated the effect of mask materials on the epitaxial lateral overgrowth (ELO) characteristics of alpha-Ga2O3 and developed an EL...
Keyword:
ELO
,
HVPE
, and
α-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Katsuaki Kawara
,
Takayoshi Oshima
,
Mitsuru Okigawa
, and
Takashi Shinohe
Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Elimination of threading dislocations in α-Ga2O3 by double layered epitaxial lateral overgrowth
Description/Abstract:
We demonstrated the double layered epitaxial lateral overgrowth (ELO) of α-Ga2O3 by halide vapor phase epitaxy. Patterned masks were prep...
Keyword:
ELO
,
dislocation
, and
α-Ga2O3
Resource Type:
Article
Author:
Katsuaki Kawara
,
Yuichi Oshima
,
Mitsuru Okigawa
, and
Takashi Shinohe
Journal:
Applied Physics Express
Date Uploaded:
22/01/2024
Date Modified:
23/01/2024
Anomalous enhancement of thermoelectric power factor in multiple two-dimensional electron gas system
Description/Abstract:
Here, we pay attention to another effect caused by confining electrons spatially along one-dimensional direction: multiplied 2DEG effect,...
Keyword:
GaAs
,
quantum confinement
,
thermoelectric
, and
two-dimensional electron gas
Resource Type:
Article
Author:
Yuto Uematsu
,
Takafumi Ishibe
,
Takaaki Mano
,
Akihiro Ohtake
,
Hideki T. Miyazaki
,
Takeshi Kasaya
, and
Yoshiaki Nakamura
Journal:
Nature Communications
Date Uploaded:
19/01/2024
Date Modified:
19/01/2024
Self-aligned patterning on β-Ga2O3 substrates via backside-exposure photolithography
Description/Abstract:
β-Ga2O3 has not been patterned using backside-exposure lithography, despite its high potential applications in future power electronics a...
Keyword:
Ga2O3
and
lithography
Resource Type:
Article
Author:
Takayoshi Oshima
Journal:
JAPANESE JOURNAL OF APPLIED PHYSICS
Date Uploaded:
17/01/2024
Date Modified:
24/01/2024
Manipulation of Spin Polarization in Boron-Substituted Graphene Nanoribbons
Description/Abstract:
The design of magnetic topological states due to spin polarization in an extended π carbon system has great potential in spintronics appl...
Keyword:
boron
,
graphene nanoribbons
, and
spin polarization
Resource Type:
Article
Author:
Kewei Sun
,
Orlando J. Silveira
,
Shohei Saito
,
Keisuke Sagisaka
,
Shigehiro Yamaguchi
,
Adam S. Foster
, and
Shigeki Kawai
Journal:
ACS Nano
Date Uploaded:
16/01/2024
Date Modified:
15/02/2024
Gate-modulated reflectance spectroscopy for detecting excitonic states in two-dimensional semiconductors
Description/Abstract:
We have developed a microspectroscopy technique for measuring gate-modulated reflectance to probe excitonic states in two-dimensional tra...
Keyword:
2D materials
,
excitons
, and
modulation spectroscopy
Resource Type:
Article
Author:
Mengsong Xue
,
Kenji Watanabe
,
Takashi Taniguchi
, and
Ryo Kitaura
Journal:
APPLIED PHYSICS LETTERS
Date Uploaded:
12/01/2024
Date Modified:
15/01/2024
Composition determination of beta-(AlxGa1-x)2O3 layers coherently grown on (010) beta-Ga2O3 substrates by high-resolution x-ray diffraction
Description/Abstract:
We demonstrate x-ray diffraction based composition estimation of b-(AlxGa1-x)2O3 coherently grown on (010) b-Ga2O3. The relation between ...
Keyword:
atom probe
,
composition
, and
β-Ga2O3
Resource Type:
Article
Author:
Yuichi Oshima
,
Elaheh Ahmadi
,
Stefan C. Badescu
,
Feng Wu
, and
James S. Speck
Journal:
APPLIED PHYSICS EXPRESS
Date Uploaded:
11/01/2024
Date Modified:
24/01/2024
Large voltage-controlled magnetic anisotropy effect in magnetic tunnel junctions prepared by deposition at cryogenic temperatures
Description/Abstract:
We investigated the influence of the buffer material and a cryogenic temperature deposition process on the voltage-controlled magnetic an...
Keyword:
Spintronics
Resource Type:
Article
Author:
Takayuki Nozaki
,
Tomohiro Ichinose
,
Jun Uzuhashi
,
Tatsuya Yamamoto
,
Makoto Konoto
,
Kay Yakushiji
,
Tadakatsu Ohkubo
, and
Shinji Yuasa
Journal:
APL Materials
Date Uploaded:
10/01/2024
Time-resolved imaging and analysis of the electron beam-induced formation of an open-cage metallo-azafullerene
Description/Abstract:
The bottom-up synthesis of strained hollow cage structures, such as fullerenes, using traditional thermal or photochemical methods remain...
Keyword:
DFT-modeling
,
cinematic chemistry
,
molecular imaging
,
radiation chemistry
,
single-molecule dynamics
, and
transmission electron microscopy
Resource Type:
Article
Author:
Helen Hoelzel
,
Sol Lee
,
Konstantin Yu. Amsharov
,
Norbert Jux
,
Koji Harano
,
Eiichi Nakamura
, and
Dominik Lungerich
Journal:
Nature Chemistry
Date Uploaded:
05/01/2024
Effect of Ca Addition on the Oxidation Resistance of Ni–Al Alloy
Description/Abstract:
Ni-base superalloys are known for their high temperature oxidation resistance, however, impurity of S at ppm order can significantly dec...
Keyword:
Ni-base superalloy
,
oxidation resistance
, and
sulfur segregation
Resource Type:
Article
Author:
Chihiro Tabata
,
Kyoko Kawagishi
,
Tadaharu Yokokawa
,
Jun Uzuhashi
,
Tadakatsu Ohkubo
,
Hiroshi Harada
, and
Shinsuke Suzuki
Journal:
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Date Uploaded:
05/01/2024
631% room temperature tunnel magnetoresistance with large oscillation effect in CoFe/MgO/CoFe(001) junctions
Description/Abstract:
We demonstrate tunnel magnetoresistance (TMR) ratios of up to 631% at room temperature (RT) using CoFe/MgO/CoFe(001) epitaxial magnetic t...
Keyword:
MgO
,
TMR
,
epitaxial growth
,
magnetic tunnel junctions
,
spintronics
, and
tunnel magnetoresistance
Resource Type:
Article
Author:
Thomas Scheike
,
Zhenchao Wen
,
Hiroaki Sukegawa
, and
Seiji Mitani
Journal:
APPLIED PHYSICS LETTERS
Date Uploaded:
05/01/2024
On-surface synthesis of disilabenzene-bridged covalent organic frameworks
Description/Abstract:
Substituting carbon with silicon in organic molecules and materials has long been an attractive way to modify their electronic structure ...
Keyword:
disilabenzene-bridged covalent organic frameworks
and
on-surface synthesis
Resource Type:
Article
Author:
Kewei Sun
,
Orlando J. Silveira
,
Yujing Ma
,
Yuri Hasegawa
,
Michio Matsumoto
,
Satoshi Kera
,
Ondřej Krejčí
,
Adam S. Foster
, and
Shigeki Kawai
Journal:
Nature Chemistry
Date Uploaded:
28/12/2023
Nanocarbon materials synthesized by local probe chemistry
Description/Abstract:
Scanning probe microscopy has been used to characterize structures and electronic properties of surfaces as well as to construct nanostru...
Keyword:
local probe
,
nanocarbon
, and
structural isomerization
Resource Type:
Article
Author:
Shigeki Kawai
Journal:
JSAP Review
Date Uploaded:
28/12/2023
Three-dimensional graphene nanoribbons as a framework for molecular assembly and local probe chemistry
Description/Abstract:
Recent advances in state-of-the-art probe microscopy allow us to conduct single molecular chemistry via tip-induced reactions and direct ...
Keyword:
graphene nanoribbons
,
local probe
, and
molecular assembly
Resource Type:
Article
Author:
Shigeki Kawai
,
Ondřej Krejčí
,
Tomohiko Nishiuchi
,
Keisuke Sahara
,
Takuya Kodama
,
Rémy Pawlak
,
Ernst Meyer
,
Takashi Kubo
, and
Adam S. Foster
Journal:
Science Advances
Date Uploaded:
28/12/2023
Magnetism in Nonplanar Zigzag Edge Termini of Graphene Nanoribbons
Description/Abstract:
Graphene nanoribbons (GNRs) and nanographenes synthesized by on-surface reactions using tailor-made molecular precursors offer an ideal p...
Keyword:
graphene nanoribbons
and
magnetism
Resource Type:
Article
Author:
Xiushang Xu
,
Kewei Sun
,
Atsushi Ishikawa
,
Akimitsu Narita
, and
Shigeki Kawai
Journal:
Angewandte Chemie International Edition
Date Uploaded:
28/12/2023
オペランド水素顕微鏡による時間分解水素透過測定から求める拡散モデルの提案
Description/Abstract:
One of the biggest issues in the hydrogen economy is “hydrogen embrittlement” of metal induced by hydrogen entering and diffusing into th...
Keyword:
diffusion model
,
hydrogen permeation
,
hydrogen visualization
, and
stainless steel
Resource Type:
Article
Author:
Akiko N. ITAKURA
,
Yoshiharu MURASE
,
Taro YAKABE
,
Naoya MIYAUCHI
,
Masahiro KITAJIMA
, and
Satoka AOYAGI
Journal:
Vacuum and Surface Science
Date Uploaded:
28/12/2023
On-surface synthesis of nitrogen-doped nanographene with an [18]annulene pore on Ag(111)
Description/Abstract:
On-surface synthesis is of importance to fabricate low dimensional carbon-based nanomaterials with atomic precision. Here, we synthesize ...
Keyword:
nanographene
and
on-surface synthesis
Resource Type:
Article
Author:
Kewei Sun
,
Donglin Li
,
Takahito Kaihara
,
Satoshi Minakata
,
Youhei Takeda
, and
Shigeki Kawai
Journal:
Communications Chemistry
Date Uploaded:
28/12/2023
Vectorial On-Surface Synthesis of Polar 2D Polymer Crystals
Description/Abstract:
The asymmetric introduction of functional groups into polymers is promising due to its potential to provide novel electronic and magnetic...
Keyword:
2D polymer crystals
and
on-surface synthesis
Resource Type:
Article
Author:
Takahiro Kojima
,
Karan Patel
,
Shunpei Nobusue
,
Ahmed Mahmoud
,
Cong Xie
,
Takahiro Nakae
,
Shigeki Kawai
,
Kazuhiro Fukami
, and
Hiroshi Sakaguchi
Journal:
Advanced Materials Interfaces
Date Uploaded:
28/12/2023
Local Probe-Induced Structural Isomerization in a One-Dimensional Molecular Array
Description/Abstract:
Synthesis of one-dimensional molecular arrays with tailored stereoisomers is challenging yet has great potential for application in molec...
Keyword:
isomerization
,
local probe
, and
molecular array
Resource Type:
Article
Author:
Shigeki Kawai
,
Orlando J. Silveira
,
Lauri Kurki
,
Zhangyu Yuan
,
Tomohiko Nishiuchi
,
Takuya Kodama
,
Kewei Sun
,
Oscar Custance
,
Jose L. Lado
,
Takashi Kubo
, and
Adam S. Foster
Journal:
Nature Communications
Date Uploaded:
28/12/2023
Detailed and high-throughput measurement of composition dependence of magnetoresistance and spin–transfer torque using a composition-gradient film: application to CoxFe1-x (0 ≤ x ≤ 1) system
Description/Abstract:
We develop a high-throughput method for measuring the composition dependence of magnetoresistance (MR) and spin-transfer-torque (STT) eff...
Keyword:
Co-Fe system
,
combinatorial sputtering
,
composition-gradient film
,
high-throughput measurement
,
magnetoresistance
, and
spin-transfer torque
Resource Type:
Article
Author:
Vineet Barwal
,
Hirofumi Suto
,
Tomohiro Taniguchi
, and
Yuya Sakuraba
Journal:
Science and Technology of Advanced Materials: Methods
Date Uploaded:
28/12/2023
耐熱鋼の亜臨界水・超臨界水酸化挙動
Description/Abstract:
9Crフェライト耐熱鋼と18Cr-8Niオーステナイト(SUS304)鋼,耐酸化性と高温強度向上を図って開発された15Crフェライト鋼を,650℃の水蒸気(圧力0.5MPa),亜臨界水(同10.2MPa),超臨界水(同22.7MPa)に種々の時間曝し,酸化に伴う重量変化から...
Keyword:
9Cr鋼
,
SUS304鋼
,
圧力
,
水蒸気酸化
, and
酸化速度定数
Resource Type:
Article
Author:
戸田 佳明
and
小畠 仁奈
Journal:
ボイラ研究
Date Uploaded:
27/12/2023
鉄鋼試料中水素拡散評価を目指したマルチモーダルデータ解析
Description/Abstract:
Multimodal data analysis provides useful information that is not generally obtained from one of the analysis methods. In this study, time...
Keyword:
EBSD
,
hydrogen permeation
,
hydrogen visualization
, and
multimodal data analysis
Resource Type:
Article
Author:
Satoka AOYAGI
,
Tomomi AKIYAMA
,
Natsumi SUZUKI
,
Naoya MIYAUCHI
, and
Akiko N. ITAKURA
Journal:
Vacuum and Surface Science
Date Uploaded:
26/12/2023
Quadrupole anomalous Hall effect in magnetically induced electron nematic state
Description/Abstract:
スピネル酸化物NiCo2O4において磁気トロイダル四極子秩序と強磁性状態が共存することを発見し、四極子異常ホール効果と呼ぶ新しい物理現象を発見した。
Keyword:
Anomalous Hall effect
and
Magnetism
Resource Type:
Article
Author:
Hiroki Koizumi
,
Yuichi Yamasaki
, and
Hideto Yanagihara
Journal:
Nature Communications
Date Uploaded:
26/12/2023
Date Modified:
26/12/2023
UV durability assessment of a thermoplastic epoxy-based hybrid composite rod for structural reinforcement and retrofitting
Description/Abstract:
Recently, a hybrid composite cable has been developed for external strengthening of structures in seismically active zones, containing a ...
Keyword:
Accelerated weathering
,
Hybrid FRP
,
Thermoplastic epoxy
, and
UV resistance
Resource Type:
Article
Author:
Jonathon Tanks
and
Kimiyoshi Naito
Journal:
Journal of Building Engineering
Date Uploaded:
25/12/2023
Humidity Sensitivity of Chemically Synthesized ZnAl2O4/Al
Description/Abstract:
Humidity sensitivity is evaluated for chemically synthesized ZnAl2O4/Al devices. We succeeded in synthesizing the ZnAl2O4/Al device by a...
Keyword:
ZnAl2O4
,
anodization
,
gas sensor
,
humidity
,
hydrothermal synthesis
, and
spinel
Resource Type:
Article
Author:
Takayuki Nakane
,
Takashi Naka
,
Minako Nakayama
, and
Tetsuo Uchikoshi
Journal:
SENSORS
Date Uploaded:
25/12/2023
High-Throughput Computational Screening of Two-Dimensional Semiconductors
Description/Abstract:
By performing high-throughput first-principles calculations combined with a semiempirical van der Waals dispersion correction, we have sc...
Keyword:
2D Materials
and
DFT
Resource Type:
Article
Author:
Vei Wang
,
Gang Tang
,
Ya-Chao Liu
,
Ren-Tao Wang
,
Hiroshi Mizuseki
,
Yoshiyuki Kawazoe
,
Jun Nara
, and
Wen Tong Geng
Journal:
Journal of Physical Chemistry Letters
Date Uploaded:
25/12/2023
Phase transitions and slow spin dynamics of slightly inverted A-site spinel CoAl2−xGaxO4
Description/Abstract:
We report the properties of an A-site spinel magnet, CoAl2−xGaxO4, and analyze its anomalous, low-temperature magnetic behavior, which is...
Keyword:
magnetic frustration
,
magnetic phase diagram
,
quantum critical point
, and
thermoremanent magnetization
Resource Type:
Article
Author:
T Naka
,
J Valenta
,
T Nakane
,
S Ishii
,
M Nakayama
,
H Mamiya
,
K Takehana
,
N Tsujii
,
Y Imanaka
,
Y Matsushita
,
H Abe
,
T Uchikoshi
, and
H Yusa
Journal:
JOURNAL OF PHYSICS-CONDENSED MATTER
Date Uploaded:
25/12/2023
Organogel Actuators Based on Redox-Responsive Foldamers: Amplification of Molecular Machine’s Motion to Macroscopic Scale
Description/Abstract:
The amplification of nanoscale motions of artificial molecular machines to the macroscopic level is a major challenge. In this study, a r...
Keyword:
Actuator
,
Foldamer
,
Gel
,
Molecular machine
, and
Stimuli-responsive materials
Resource Type:
Article
Author:
Taichi Ikeda
Journal:
ACS Applied Polymer Materials
Date Uploaded:
25/12/2023
Complexation study of a 1,3-phenylene-bridged cyclic hexa-naphthalene with fullerenes C60 and C70 in solution and 1D-alignment of fullerenes in the crystals
Description/Abstract:
To investigate the host ability of a simple macrocycle, 1,3-phenylene-bridged naphthalene hexamer N6, we evaluated the complexation of N6...
Keyword:
charge tansfer
,
fullerene
,
host-guest
, and
macrocycle
Resource Type:
Article
Author:
Peifeng Mei
,
Hirofumi Morimoto
,
Yuta Okada
,
Kyohei Matsuo
,
Hironobu Hayashi
,
Akinori Saeki
,
Hiroko Yamada
, and
Naoki Aratani
Journal:
RSC Advances
Date Uploaded:
22/12/2023
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HfO2
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InP/GaInAsP multilayer specimens
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41 elemental solids (Li, Be, graphite, diamond, glassy C, Na, Mg, Al, Si, K, Sc, Ti, V, Cr, Fe, Co, Ni, Cu, Ge, Y, Nb, Mo, Ru, Rh, Pd, Ag, In, Sn, Cs, Gd, Tb, Dy, Hf, Ta, W, Re, Os, Ir, Pt, Au, and Bi)
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TODOROKI, Shin-ichi
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轟 眞市
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田邉 浩介
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International Center for Materials Nanoarchitectonics (WPI-MANA)
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Ikumu Watanabe
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Kosuke Minami
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MOTEKI, Fuma
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Physical Review B
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