# Audible sensing of low-ppm concentration gases

https://mdr.nims.go.jp/datasets/e69a11eb-39e5-485b-8304-474ff76a793b

## File

- [20241901_MainText_R1_1.docx](https://mdr.nims.go.jp/filesets/74a79834-cb57-42cd-9969-629556dbc53c/download) ([Detail](https://mdr.nims.go.jp/filesets/74a79834-cb57-42cd-9969-629556dbc53c.md))

## Id

e69a11eb-39e5-485b-8304-474ff76a793b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-15T04:45:19.099220Z

## Updated at

2026-02-27T03:30:28.524097Z

## Published at

2026-02-27T00:51:44.393651Z

## Doi

https://doi.org/10.48505/nims.4979

## First published url

https://doi.org/10.1016/j.sna.2024.115215

## Date published

2024-02-26

## Recorded date published

2024-5

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Audible sensing of low-ppm concentration gases
  title_type: original
  lang: en

## Description

- description: Reliable and consistent measurement of various gas molecules at low
    parts per million (low-ppm) concentration is an essential intermediary step towards
    low-cost versatile gas analysers. Here we demonstrate physical measurements of
    various low-ppm molecules by means of an acoustic standing wave-based resonating
    device with a speaker and a microelectromechanical systems (MEMS) microphone,
    using either the sound pressure level (SPL) at a fixed frequency, or alternatively,
    tracking the resonance frequency as gas molecules enter the acoustic device. Low-ppm
    gas molecules are measurable at frequencies near standing wave resonances, as
    slight shifts in the speed of sound result in a shift of the acoustic frequency
    response function. Since a chemical receptor layer on the sensing component is
    not required for the measurements, absolute physical quantities of the molecules
    are measurable, which coincide well theoretically with expected values for pure
    chemicals. Various conditions are tested using different low-ppm molecules to
    demonstrate the limit of detection (LOD), using a low-cost and portable acoustic
    setup. An LOD is determined to be in the order of several ppm for most molecules.
    Gas analysers based on a physical approach present new opportunities for mobile
    gas sensing in practical applications.
  description_type: abstract
  lang: und

## Creator

- name: Tanju Yildirim
  role: author
- name: Meng-Qun Feng
  role: author
  orcid: https://orcid.org/0000-0002-3185-7555
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kota Shiba
  role: author
  orcid: https://orcid.org/0000-0001-7775-0318
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kosuke Minami
  role: author
  orcid: https://orcid.org/0000-0003-4145-1118
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Genki Yoshikawa
  role: author
  orcid: https://orcid.org/0000-0002-9136-8964
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Acoustics
  schema: not_defined
- subject: Audible-range sound waves
  schema: not_defined
- subject: Measurement
  schema: not_defined
- subject: Gas sensors
  schema: not_defined

## Rights

- description: "© 2024. This manuscript version is made available under the CC-BY-NC-ND
    4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/"
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-02-27
end_date: 2026-02-27

## Journal

- title: 'Sensors and Actuators A: Physical'
  issn: '09244247'
  volume: '370'
  article_number: '115215'

## Conference



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## Specimen



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## Fileset

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  filename: 20241901_MainText_R1_1.docx
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  size: 5920324
  md5: 5f320d53076371d31ba3ebd5db1caad3

## Thumbnail

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filename: 20241901_MainText_R1_1.docx