Pyroelectric detection in glycolipid thin film

Kwong, W.L. and Gan, W.C. and Majid, W.H.A. and Hashim, R. and Heidelberg, T. (2010) Pyroelectric detection in glycolipid thin film. Thin Solid Films, 518 (15). pp. 4412-4416.

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The pyroelectric and dielectric properties of glycolipid thin films have been investigated. The glycolipid under studied is (2-n-decyl-n-tetradecyl)-4-O-maltoside. From the thin film observations using polarizing optical microscopy, glycolipid molecules were found to align homeotropically, which results in non-zero temperature-dependent spontaneous polarization. The pyroelectric coefficient, dielectric constant, dielectric loss tangent and figure of merit of the glycolipid thin films are found to be in the range of 70-105 mu C m(-2) K(-1), 5.9-16, 0.242-0.523 and 24-88 mu C m(-2) K(-1) respectively, depending on the glycolipid concentration. Higher concentration of glycolipid renders higher pyroelectric coefficient but lower dielectric constant and dielectric loss tangent, which then results in a higher figure of merit. (C) 2010 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: Q Science > Q Science (General)
Depositing User: MR Faizal II H
Date Deposited: 20 Oct 2015 03:19
Last Modified: 20 Oct 2015 03:19

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