Rough-Surface-Enabled Capacitive Pressure Sensors with 3D Touch Capability

Kilsoo Lee, Jaehong Lee, Gwangmook Kim, Youngjae Kim, Subin Kang, Sungjun Cho, Seul Gee Kim, Jae Kang Kim, Wooyoung Lee, Dae Eun Kim, Shinill Kang, Dae Eun Kim, Taeyoon Lee, Wooyoung Shim

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Fabrication strategies that pursue “simplicity” for the production process and “functionality” for a device, in general, are mutually exclusive. Therefore, strategies that are less expensive, less equipment-intensive, and consequently, more accessible to researchers for the realization of omnipresent electronics are required. Here, this study presents a conceptually different approach that utilizes the inartificial design of the surface roughness of paper to realize a capacitive pressure sensor with high performance compared with sensors produced using costly microfabrication processes. This study utilizes a writing activity with a pencil and paper, which enables the construction of a fundamental capacitor that can be used as a flexible capacitive pressure sensor with high pressure sensitivity and short response time and that it can be inexpensively fabricated over large areas. Furthermore, the paper-based pressure sensors are integrated into a fully functional 3D touch-pad device, which is a step toward the realization of omnipresent electronics.

Original languageEnglish
Article number1700368
JournalSmall
Volume13
Issue number43
DOIs
Publication statusPublished - 2017 Nov 20

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All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

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