Optical gas sensing of hematin Langmuir-Blodgett films

Muhamad Mat Salleh, A. S. Belal, Muhammad Yahaya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports the use of hematin Langmuir-Blodgett (LB) films to detect carbon monoxide gas at the room temperature, based on changes in the optical absorption of the films. Hematin LB films were deposited on quartz and glass substrates. For the film deposited on quartz substrate, an increase in the absorption spectra of the film was achieved by exposing the film to carbon monoxide gas. The absorption spectra of the film recover back when the exposing gas was cut off. While for the film deposited on glass substrate, there is no significant change in the spectra due to this gas. Atomic force microscope images were taken for the hematin LB films both on glass and quartz substrates. Both images show different features indicating that the optical respond of the films to the gas depends on the arrangement of molecules on the substrate.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages77-81
Number of pages5
Volume3175
DOIs
Publication statusPublished - 1998
Event3rd International Conference on Thin Film Physics and Applications - Shanghai, China
Duration: 15 Apr 199715 Apr 1997

Other

Other3rd International Conference on Thin Film Physics and Applications
CountryChina
CityShanghai
Period15/4/9715/4/97

Fingerprint

Hemin
Langmuir Blodgett films
Langmuir-Blodgett films
Sensing
Gases
Quartz
gases
Substrates
Substrate
quartz
Carbon Monoxide
Carbon monoxide
Glass
carbon monoxide
glass
Absorption spectra
Absorption Spectra
absorption spectra
Gas
Light absorption

Keywords

  • Absorption spectra
  • Atomic force microscope
  • Carbon monoxide
  • Gas sensor
  • Hematin
  • Langmuir-Blodgett films

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Mat Salleh, M., Belal, A. S., & Yahaya, M. (1998). Optical gas sensing of hematin Langmuir-Blodgett films. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3175, pp. 77-81) https://doi.org/10.1117/12.300641

Optical gas sensing of hematin Langmuir-Blodgett films. / Mat Salleh, Muhamad; Belal, A. S.; Yahaya, Muhammad.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3175 1998. p. 77-81.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mat Salleh, M, Belal, AS & Yahaya, M 1998, Optical gas sensing of hematin Langmuir-Blodgett films. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3175, pp. 77-81, 3rd International Conference on Thin Film Physics and Applications, Shanghai, China, 15/4/97. https://doi.org/10.1117/12.300641
Mat Salleh M, Belal AS, Yahaya M. Optical gas sensing of hematin Langmuir-Blodgett films. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3175. 1998. p. 77-81 https://doi.org/10.1117/12.300641
Mat Salleh, Muhamad ; Belal, A. S. ; Yahaya, Muhammad. / Optical gas sensing of hematin Langmuir-Blodgett films. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3175 1998. pp. 77-81
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