Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
In recent years, the photoacoustic effects in solid materials, induced by the absorption of intensity-modulated laser radiation, were used as a versatile tool for optical and thermal characterization of a variety of samples. In our work, by using the photoacoustic detection technique, the measure...
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2002
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my-upm-ir.95082013-07-18T07:51:08Z Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry 2002-09 Chan, Kok Sheng In recent years, the photoacoustic effects in solid materials, induced by the absorption of intensity-modulated laser radiation, were used as a versatile tool for optical and thermal characterization of a variety of samples. In our work, by using the photoacoustic detection technique, the measurement was first carried out to obtain the thermal diffusivity values of commercial papers (i.e. white paper, drawing paper, filtering paper, wrapping paper, fax paper and press paper), sago starch, chitosan and the blends of sago starch with chitosan. All the measurements for these samples were carried out at room temperature. It was based upon the measurement of the photoacoustic signal as a function of the modulation frequency in the region where the thermal diffusion length equals to the sample thickness. Thermal diffusivity Optoacoustic spectroscopy 2002-09 Thesis http://psasir.upm.edu.my/id/eprint/9508/ http://psasir.upm.edu.my/id/eprint/9508/1/FSAS_2002_35_A.pdf application/pdf en public masters Universiti Putra Malaysia Thermal diffusivity Optoacoustic spectroscopy Faculty of Science and Environmental Studies English |
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Universiti Putra Malaysia |
collection |
PSAS Institutional Repository |
language |
English English |
topic |
Thermal diffusivity Optoacoustic spectroscopy |
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Thermal diffusivity Optoacoustic spectroscopy Chan, Kok Sheng Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry |
description |
In recent years, the photoacoustic effects in solid materials, induced by the absorption of
intensity-modulated laser radiation, were used as a versatile tool for optical and thermal
characterization of a variety of samples. In our work, by using the photoacoustic
detection technique, the measurement was first carried out to obtain the thermal
diffusivity values of commercial papers (i.e. white paper, drawing paper, filtering paper,
wrapping paper, fax paper and press paper), sago starch, chitosan and the blends of sago
starch with chitosan. All the measurements for these samples were carried out at room
temperature. It was based upon the measurement of the photoacoustic signal as a function
of the modulation frequency in the region where the thermal diffusion length equals to
the sample thickness. |
format |
Thesis |
qualification_level |
Master's degree |
author |
Chan, Kok Sheng |
author_facet |
Chan, Kok Sheng |
author_sort |
Chan, Kok Sheng |
title |
Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry |
title_short |
Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry |
title_full |
Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry |
title_fullStr |
Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry |
title_full_unstemmed |
Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry |
title_sort |
thermal diffusivity measurement and photobleaching study using photoacoustic technique and uv –visible fibre optics spectrometry |
granting_institution |
Universiti Putra Malaysia |
granting_department |
Faculty of Science and Environmental Studies |
publishDate |
2002 |
url |
http://psasir.upm.edu.my/id/eprint/9508/1/FSAS_2002_35_A.pdf |
_version_ |
1747810969294209024 |