Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films
p. 21-27
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
H. : ĐHQGHN
2017
|
| Subjects: | |
| Online Access: | http://repository.vnu.edu.vn/handle/VNU_123/55912 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Vietnam National University, Hanoi |
| Language: | English |
| id |
oai:112.137.131.14:VNU_123-55912 |
|---|---|
| record_format |
dspace |
| spelling |
oai:112.137.131.14:VNU_123-559122018-08-09T06:38:59Z Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films Nguyen, Van Thuan Tran, Vinh Son Tran, Quang Trung Tran, Thi Thao Nguyen, Nang Dinh Laser beam diffraction thermal expansion diffraction grating polymer p. 21-27 Laser beam diffraction by a patterned surface has been investigated theoretically and experimentally for the determination of the thermal expansion coefficient (a) of polymeric materials. By tracking the deviation of the first order diffraction mode from surface-patterned polymers, expansion coefficients in a range 10-7 to 10-4 K-1 can be measured by temperature changes less than 100 oC. A set-up of laser diffraction (SLD) was made, using a He-Ne laser (l = 632.8 nm) and thin film casting technique. The results of measurements on the SLD system for polymers like PVK polycarbonate, PDMS, organic complex (chitosan) and conducting polymer (P3HT) showed that SLD technique can be applied to determine thermal expansion coefficients of different polymeric materials with a considerably small volume. Especially, the fact that a of P3HT-composite films was found to be much lower than that of the pure P3HT suggests a potential application of polymeric composites for organic devices working at elevated temperature, for organic solar cells (OSC) in particular. 2017-08-09T02:10:36Z 2017-08-09T02:10:36Z 2015 Article Nguyen, V. T., et al. (2015). Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films. VNU Journal of Science: Mathematics – Physics, 31(2), 21-27 2588-1124 http://repository.vnu.edu.vn/handle/VNU_123/55912 en VNU Journal of Science: Mathematics – Physics application/pdf H. : ĐHQGHN |
| institution |
Vietnam National University, Hanoi |
| building |
VNU Library & Information Center |
| country |
Vietnam |
| collection |
VNU Digital Repository |
| language |
English |
| topic |
Laser beam diffraction thermal expansion diffraction grating polymer |
| spellingShingle |
Laser beam diffraction thermal expansion diffraction grating polymer Nguyen, Van Thuan Tran, Vinh Son Tran, Quang Trung Tran, Thi Thao Nguyen, Nang Dinh Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films |
| description |
p. 21-27 |
| format |
Article |
| author |
Nguyen, Van Thuan Tran, Vinh Son Tran, Quang Trung Tran, Thi Thao Nguyen, Nang Dinh |
| author_facet |
Nguyen, Van Thuan Tran, Vinh Son Tran, Quang Trung Tran, Thi Thao Nguyen, Nang Dinh |
| author_sort |
Nguyen, Van Thuan |
| title |
Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films |
| title_short |
Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films |
| title_full |
Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films |
| title_fullStr |
Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films |
| title_full_unstemmed |
Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films |
| title_sort |
development of laser beam diffraction technique for determination of thermal expansion coefficient of polymeric thin films |
| publisher |
H. : ĐHQGHN |
| publishDate |
2017 |
| url |
http://repository.vnu.edu.vn/handle/VNU_123/55912 |
| _version_ |
1680965850382729216 |