# A tungsten-based solar absorber with a strip-combined starfish structure with high photothermal conversion efficiency and low radiative heat loss

https://mdr.nims.go.jp/datasets/f80aa8ae-5af7-4565-8305-579071aebdd5

## File

- [Tungsten-based Solar Absorber with a Strip-Combined Starfish Structure with High Photothermal Conversion Efficiency and Low Radiative Heat Loss_PCCP.docx](https://mdr.nims.go.jp/filesets/04c1b0b8-603f-49d9-91b3-95f2d2b3d25e/download) ([Detail](https://mdr.nims.go.jp/filesets/04c1b0b8-603f-49d9-91b3-95f2d2b3d25e.md))

## Id

f80aa8ae-5af7-4565-8305-579071aebdd5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-26T10:48:55.613575Z

## Updated at

2026-04-30T03:01:11.491392Z

## Published at

2026-10-28T23:28:24.790388Z

## Doi

https://doi.org/10.48505/nims.6095

## First published url

https://doi.org/10.1039/d5cp03164h

## Date published

2025-10-29

## Recorded date published

2025-12-10

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: A tungsten-based solar absorber with a strip-combined starfish structure
    with high photothermal conversion efficiency and low radiative heat loss
  title_type: original
  lang: en

## Description

- description: We propose a tungsten-based broadband resonator capable of achieving
    near-perfect solar absorption with suppressed radiative heat loss. Across the
    entire solar radiation spectrum, the absorber exhibits a spectrally integrated
    total solar absorptance of 95%. Taking into account the thermal emission under
    an operating temperature of 100°C, the photothermal conversion efficiency remains
    as high as 92%-93%. Using the Particle Swarm Optimization, the initial square-based
    structure is transformed into the adjacent and closely packed strip structures
    with multiple lengths to achieve enhanced solar absorption. The analysis uses
    finite-difference time-domain simulations, considering light polarization, incident
    angle, and structural defects. We proposed a new metamaterial structure with multiple
    strips that are more efficient, and has simpler geometric structures, such as
    compared to multilayer films, pyramids, or cone structures, which mostly exhibit
    substantial radiative heat losses. The structure is composed of a W/SiO₂/W (Metal-Insulator-Metal)
    configuration, with a surface nanostructure pattern composed of low-emissivity
    tungsten, with fabrication error-tolerant computational design.
  description_type: abstract
  lang: und

## Creator

- name: Chih-Chung Wang
  role: author
- name: Jia-Han Li
  role: author
- name: Tadaaki Nagao
  role: author
  orcid: https://orcid.org/0000-0002-6746-2686
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: solar heat absorber
  schema: not_defined
- subject: tungsten
  schema: not_defined
- subject: silicon oxide
  schema: not_defined
- subject: metal-insulator-metal
  schema: not_defined
- subject: starfish
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-10-29
end_date: 2026-10-29

## Journal

- title: Physical Chemistry Chemical Physics
  issn: '14639076'
  volume: '27'
  issue: '48'
  start_page: 25868
  end_page: 25875

## Conference



## Related item



## Funding

- identifier: 112-2926-I-002-510-G
  funder_name: National Science and Technology Council
- identifier: 114-2926-I-002-505-G
  funder_name: National Science and Technology Council

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



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## Fileset

- id: 04c1b0b8-603f-49d9-91b3-95f2d2b3d25e
  filename: Tungsten-based Solar Absorber with a Strip-Combined Starfish Structure
    with High Photothermal Conversion Efficiency and Low Radiative Heat Loss_PCCP.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 9546952
  md5: 89aae87e6e0f1f4121a3e23aaffe3037

## Thumbnail

fileset_id: 04c1b0b8-603f-49d9-91b3-95f2d2b3d25e
filename: Tungsten-based Solar Absorber with a Strip-Combined Starfish Structure with
  High Photothermal Conversion Efficiency and Low Radiative Heat Loss_PCCP.docx