Highly Sensitive and Patchable Pressure Sensors Mimicking Ion-Channel-Engaged Sensory Organs

Kyoung Yong Chun, Young Jun Son, Chang Soo Han

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Biological ion channels have led to much inspiration because of their unique and exquisite operational functions in living cells. Specifically, their extreme and dynamic sensing abilities can be realized by the combination of receptors and nanopores coupled together to construct an ion channel system. In the current study, we demonstrated that artificial ion channel pressure sensors inspired by nature for detecting pressure are highly sensitive and patchable. Our ion channel pressure sensors basically consisted of receptors and nanopore membranes, enabling dynamic current responses to external forces for multiple applications. The ion channel pressure sensors had a sensitivity of 5.6 kPa-1 and a response time of 12 ms at a frequency of 1 Hz. The power consumption was recorded as less than a few W. Moreover, a reliability test showed stability over 10000 loading-unloading cycles. Additionally, linear regression was performed in terms of temperature, which showed no significant variations, and there were no significant current variations with humidity. The patchable ion channel pressure sensors were then used to detect blood pressure/pulse in humans, and different signals were clearly observed for each person. Additionally, modified ion channel pressure sensors detected complex motions including pressing and folding in a high-pressure range (10-20 kPa).

Original languageEnglish
Pages (from-to)4550-4558
Number of pages9
JournalACS nano
Issue number4
Publication statusPublished - 2016 Apr 26

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.


  • bioinspired
  • ion channel
  • nanopore
  • pressure response
  • receptor
  • sensor

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy


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