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|Title:||Highly sensitive and wide linear-response pressure sensors featuring zero standby power consumption under bending conditions||Authors:||Yi, Chenghan
|Keywords:||Engineering::Electrical and electronic engineering||Issue Date:||2020||Source:||Yi, C., Hou, Y., He, K., Li, W., Li, N., Wang, Z., Yang, B., Xu, S., Wang, H., Gao, C., Wang, Z., Gu, G., Wang, Z., Wei, L., Yang, C. & Chen, M. (2020). Highly sensitive and wide linear-response pressure sensors featuring zero standby power consumption under bending conditions. ACS Applied Materials and Interfaces, 12(17), 19563-19571. https://dx.doi.org/10.1021/acsami.0c02774||Project:||MOE2015-T2-2-010
|Journal:||ACS Applied Materials and Interfaces||Abstract:||The ability of a flexible pressure sensor to possess zero power consumption in standby mode, high sensitivity, and wide linear-response range is critical in real flexible matrix-based scenes. However, when the conventional flexible pressure sensors are attached on a curved surface, a pseudosignal response is generated because of the normal stress, resulting in a short linear-response range. Here, a flexible piezoresistive pressure sensor with high performance, zero standby power consumption is demonstrated. The flexible pressure sensor is fabricated from polydimethylsiloxane (PDMS)/carbon black (CB), patterned polyimide (PI) spacer layer, and laser-induced graphene (LIG) interdigital electrodes. Benefiting from the hierarchical structure and sufficient roughness of PDMS/CB and LIG interdigital electrodes, the proposed pressure sensors (PDMS/CB/PI/LIG) exhibit high sensitivity (43 kPa-1), large linear-response range (0.4-13.6 kPa), fast response (<40 ms), and long-term cycle stability (>1800 cycles). The resulting pressure sensor also features zero standby power consumption merit under certain bending conditions (bending angle: 0-5o). Furthermore, the effect of the hole diameter of the PI spacer layer on the performance of the pressure sensors is experimentally and theoretically investigated. As a proof of concept, a bioinspired artificial haptic neuron system has been successfully equipped to modulate the number of lit LED lights. The proposed high-performance pressure sensor has promising potential to be used in flexible and wearable electronics, especially for the applications in actual flexible matrix-based scenes.||URI:||https://hdl.handle.net/10356/155160||ISSN:||1944-8244||DOI:||10.1021/acsami.0c02774||Rights:||© 2020 American Chemical Society. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||EEE Journal Articles|
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