Effect of Dangling Bonds on De-Poling Time for Polymeric Electric Field Optical Sensors

This paper investigates the possible chemical changes in polydimethylsiloxane (PDMS) caused by two different techniques of fabrication for ultra-sensitive electric field optical sensors. The sensing element is a micro-sphere made from 60:1 PDMS (60 parts base silicon elastomer to one part polymer cu...

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Veröffentlicht in:Chemosensors 2018-03, Vol.6 (1), p.3
Hauptverfasser: Ali, Amir, Tourky, Amal, Ali, Roushdy
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Sprache:eng
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Zusammenfassung:This paper investigates the possible chemical changes in polydimethylsiloxane (PDMS) caused by two different techniques of fabrication for ultra-sensitive electric field optical sensors. The sensing element is a micro-sphere made from 60:1 PDMS (60 parts base silicon elastomer to one part polymer curing agent by volume). The measurement principle is based on the morphology dependent resonances (MDR) shifts of the micro-sphere. We present the effects of curing and poling of polymer micro-spheres used as optical sensors. The degree of curing leads to changes in the de-poling time which results from dangling bonds in the polymeric chains. Consequently, the longevity of the sensitivity of the sensor can extended by two orders of magnitude. An analysis is carried out along with preliminary experiments to investigate that behavior.
ISSN:2227-9040
2227-9040
DOI:10.3390/chemosensors6010003