On-Chip, Dynamic, and Cryogenic Temperature Monitoring via PDMS Micro-Bead Coatings

被引：14

作者：

Frenkel, Matthew ^{[1
]}

Guo, Zhixiong ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA

来源：

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS | 2016年 / 54卷 / 12期

基金：

美国国家科学基金会;

关键词：

coatings; cryogenic temperature; electrical resistivity; films; optical resonance; sensors; WHISPERING-GALLERY MODES; MICROSPHERE RESONATORS; OPTICAL-FIBER; LABEL-FREE; EXCITATION; SENSORS;

D O I：

10.1002/polb.24016

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Polydimethylsiloxane (PDMS) microshells/beads coated onto an electrical current-carrying wire are demonstrated for on-chip, dynamic, cryogenic temperature measurement via monitoring optical whispering-gallery mode (WGM) frequency shifts. PDMS is found to be capable of supporting WGM resonance at cryogenic temperatures down to 95 K, limited by the present lab-built cryogenic working environment. The effect of the polymeric sensor diameter on temperature sensitivity is explored and discussed. The sensors are tested for their realtime temperature monitoring capabilities and accuracy in the cryogenic temperature regime of 95-140 K, and a comparison to a theoretical model, where the electrical resistivity of nichrome wire at cryogenic temperature is also experimentally determined, is examined. (C) 2016 Wiley Periodicals, Inc.

引用

页码：1118 / 1124

页数：7

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