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Strain-Controlled Flexible Graphene/GaN/PDMS Sensors Based on the Piezotronic Effect.
ACS Appl Mater Interfaces
August 2020
School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, South Korea.
Article Synopsis
- Researchers used a simple graphene transfer and laser lift-off process to create a flexible sensor using a GaN layer on a PDMS substrate, studying the piezotronic effect through strain-induced current-voltage measurements.
- The sensor demonstrated an impressive sensitivity to compressive strain, with a remarkable gauge factor of 13.48, outperforming standard metal strain gauges by 3.7 times.
- The findings indicate a promising avenue for developing commercially viable flexible and wearable strain sensors harnessing the piezotronic effect.
Electrochemomechanical Behavior of Polypyrrole-Coated Nanofiber Scaffolds in Cell Culture Medium.
Polymers (Basel)
June 2019
Conducting polymers in composites and applications Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam.
Glucose-gelatin nanofiber scaffolds were made conductive and electroactive by chemical (conductive fiber scaffolds, CFS) and additionally electrochemical polypyrrole deposition (doped with triflouromethanesulfonate CFSO, CFS-PPyTF). Both materials were investigated in their linear actuation properties in cell culture medium (CCM), as they could be potential electro-mechanically activated cell growth substrates. Independent of the deposition conditions, both materials showed relatively stable cation-driven actuation in CCM, based on the flux of mainly Na ions from CCM.
View Article and Find Full Text PDFReal-time monitoring of the solution growth of ZnO nanorods arrays by quartz microbalances and in-situ temperature sensors.
Sci Rep
September 2014
1] Department of Electronic Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy [2] CNR IDASC, Via Fosso del Cavaliere, 100, 00133 Rome, Italy.
Wet-chemistry methods have crucial advantages for the synthesis of nanostructures, including simple, low-cost, large-area, and low-temperature deposition on almost arbitrary substrates. Nevertheless, the rational design of improved wet-chemistry procedures is extremely difficult because, in practice, only post-synthesis characterization is possible. In fact, the only methods for on-line monitoring the growth of nanostructures in liquids are complex, expensive and introduce intricate artifacts.
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