Contactless Strain Sensor Using Electret Technology for Highly Sensitive Stretch-Based Applications
| Autor: | Aravind Narain Ravichandran, Marc Ramuz, Sylvain Blayac |
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| Rok vydání: | 2020 |
| Předmět: |
Fabrication
Materials science business.industry 010401 analytical chemistry Detector 01 natural sciences Piezoresistive effect Piezoelectricity 0104 chemical sciences Electric field Electrode Optoelectronics Electret Electrical and Electronic Engineering business Instrumentation Sensitivity (electronics) |
| Zdroj: | IEEE Sensors Journal. 20:14632-14638 |
| ISSN: | 2379-9153 1530-437X |
| Popis: | The detection of mechanical stretching is usually based on piezoresistive effect made up of piezoelectric material. Here, we report a novel approach of autonomous contactless stretch sensor for detection of varying electric field based on electret technology. The present work proposes a novel approach that detects low-noise with high sensitivity for various stretch-based applications. Nanoparticle filled thin-film polymeric membrane are activated by corona injection to trap the charges and form a permanently charged electret and the contactless fixed electrode pair continuously monitors the change in electric field exerted by the tensile strain/deformation on the polymeric membrane. The sensor detects a peak output response of 4.7 V under 20% cyclic tensile strain with a sensitivity of 56 mV/%strain. By considering these merits of simple and scalable fabrication, outstanding performance and robust characteristic, we believe the autonomous contactless stretch sensor can open great opportunities not only for low-noise sensing/detection applications but can contribute to multitude large-scale applications such as intrusion detectors, microphones, pressure monitoring, sensing for security and safety applications. |
| Databáze: | OpenAIRE |
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