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Polymers 2017, 9(8), 310; https://doi.org/10.3390/polym9080310

Flexible Polymer Device Based on Parylene-C with Memory and Temperature Sensing Functionalities

1
Institude of Microelectronics, Peking University, Beijing 100871, China
2
Innovation Center for Microelectronics and Integrated System, Peking University, Beijing 100871, China
3
Department of Geriatric Cardiology of Chinese PLA General Hospital, Beijing 100871, China
*
Author to whom correspondence should be addressed.
Received: 20 June 2017 / Revised: 18 July 2017 / Accepted: 25 July 2017 / Published: 26 July 2017
(This article belongs to the Special Issue Wearable Sensor)
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Abstract

Polychloro-para-xylylene (parylene-C) is a flexible and transparent polymer material which has excellent chemical stability and high biocompatibility. Here we demonstrate a polymer device based on single-component parylene-C with memory and temperature sensing functionalities. The device shows stable bipolar resistive switching behavior, remarkable storage window (>104), and low operation voltages, exhibiting great potential for flexible resistive random-access memory (RRAM) applications. The I-V curves and conductive atomic force microscopy (CAFM) results verify the metallic filamentary-type switching mechanism based on the formation and dissolution of a metal bridge related to the redox reaction of the active metal electrode. In addition, due to the metallic properties of the low-resistance state (LRS) in the polymer device, the resistance in the LRS exhibits a nearly linear relationship at the temperature regime between 25 °C and 100 °C. With a temperature coefficient of resistance (TCR) of 2.136 × 10−3/°C, the device is also promising for the flexible temperature sensor applications. View Full-Text
Keywords: wearable devices; flexible; resistive random-access memory; temperature sensor wearable devices; flexible; resistive random-access memory; temperature sensor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Lin, M.; Chen, Q.; Wang, Z.; Fang, Y.; Liu, J.; Yang, Y.; Wang, W.; Cai, Y.; Huang, R. Flexible Polymer Device Based on Parylene-C with Memory and Temperature Sensing Functionalities. Polymers 2017, 9, 310.

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