{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T15:38:26Z","timestamp":1775144306269,"version":"3.50.1"},"reference-count":36,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2021,1,4]],"date-time":"2021-01-04T00:00:00Z","timestamp":1609718400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Wendong Zhang","award":["51875535"],"award-info":[{"award-number":["51875535"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>As a new material, graphene shows excellent properties in mechanics, electricity, optics, and so on, which makes it widely concerned by people. At present, it is difficult for graphene pressure sensor to meet both high sensitivity and large pressure detection range at the same time. Therefore, it is highly desirable to produce flexible pressure sensors with sufficient sensitivity in a wide working range and with simple process. Herein, a relatively high flexible pressure sensor based on piezoresistivity is presented by combining the conical microstructure polydimethylsiloxane (PDMS) with bilayer graphene together. The piezoresistive material (bilayer graphene) attached to the flexible substrate can convert the local deformation caused by the vertical force into the change of resistance. Results show that the pressure sensor based on conical microstructure PDMS-bilayer graphene can operate at a pressure range of 20 kPa while maintaining a sensitivity of 0.122 \u00b1 0.002 kPa\u22121 (0\u20135 kPa) and 0.077 \u00b1 0.002 kPa\u22121 (5\u201320 kPa), respectively. The response time of the sensor is about 70 ms. In addition to the high sensitivity of the pressure sensor, it also has excellent reproducibility at different pressure and temperature. The pressure sensor based on conical microstructure PDMS-bilayer graphene can sense the motion of joint well when the index finger is bent, which makes it possible to be applied in electronic skin, flexible electronic devices, and other fields.<\/jats:p>","DOI":"10.3390\/s21010289","type":"journal-article","created":{"date-parts":[[2021,1,4]],"date-time":"2021-01-04T08:35:19Z","timestamp":1609749319000},"page":"289","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Design of Flexible Pressure Sensor Based on Conical Microstructure PDMS-Bilayer Graphene"],"prefix":"10.3390","volume":"21","author":[{"given":"Lixia","family":"Cheng","sequence":"first","affiliation":[{"name":"State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan 030051, China"},{"name":"Taiyuan Institute of Technology, Taiyuan 030051, China"}]},{"given":"Renxin","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan 030051, China"},{"name":"Science and Technology on Sonar Laboratory, Hangzhou 310000, China"}]},{"given":"Xiaojian","family":"Hao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan 030051, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2551-5388","authenticated-orcid":false,"given":"Guochang","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Dynamic Testing Technology, North University of China, Taiyuan 030051, China"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2054","DOI":"10.1021\/acs.nanolett.8b00063","article-title":"Large-area high-performance flexible pressure sensor with carbon nanotube active matrix for electronic skin","volume":"18","author":"Nela","year":"2018","journal-title":"Nano Lett."},{"key":"ref_2","first-page":"40","article-title":"Wearable circuits sintered at room temperature directly on the skin surface for health monitoring","volume":"12","author":"Zhang","year":"2020","journal-title":"ACS Appl. 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