File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher


Ko, Hyunhyub
Functional Nanomaterials & Devices Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Ultrasensitive Piezoresistive Pressure Sensors Based on Interlocked Micropillar Arrays

Park, JonghwaLee, YoungohLim, SeongdongLee, YoungsuJung, YoungdoLim, HyuneuiKo, Hyunhyub
Issued Date
BioNanoScience, v.4, no.4, pp.349 - 355
The development of wearable electronic skins is drawing many interests due to potential applications in prosthetic limbs, robotic skins, and human healthcare monitoring devices. Here, we demonstrate piezoresistive wearable electronic skins based on conductive composite elastomers with interlocked geometry of micropillar arrays. The interlocked micropillar arrays enable the huge variation of contact area and thus the contact resistance between interlocked micropillar arrays when they are deformed in response to external pressure stimuli. In this study, we show that the contact resistance is strongly affected by the variation of diameter, pitch size, and shape of micropillar arrays. The pressure sensor with optimized micropillar dimension shows an ultrahigh pressure sensitivity (−22.8 kPa−1) and response time (∼0.07 s). Finally, we demonstrate that the wearable electronic skin attached on the fingertip is capable of detecting the pressure and vibration signal simultaneously.
Springer Science + Business Media
Keyword (Author)
Carbon nanotubesElectronic skinMicropatternsNanocompositesPressure sensorWearable devices


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.