Giuseppe Cantarella - clean Manuscript.pdf (1.5 MB)
Design of engineered elastomeric substrate for stretchable active devices and sensors
journal contribution
posted on 2023-06-09, 13:36 authored by Giuseppe Cantarella, Vincenzo Costanza, Alberto Ferrero, Raoul Hopf, Christian Vogt, Matija Varga, Luisa Petti, Niko Munzenrieder, Lars Büthe, Giovanni Salvatore, Alex Claville, Luca Bonanomi, Alwin Daus, Stefan Knobelspies, Chiara Daraio, Gerhard TrösterIn the field of flexible electronics, emerging applications require biocompatible and unobtrusive devices, which can withstand different modes of mechanical deformation and achieve low complexity in the fabrication process. Here, the fabrication of a mesa-shaped elastomeric substrate, supporting thin-film transistors (TFTs) and logic circuits (inverters), is reported. High-relief structures are designed to minimize the strain experienced by the electronics, which are fabricated directly on the pillars' surface. In this design configuration, devices based on amorphous indium-gallium-zinc-oxide can withstand different modes of deformation. Bending, stretching, and twisting experiments up to 6 mm radius, 20% uniaxial strain, and 180° global twisting, respectively, are performed to show stable electrical performance of the TFTs. Similarly, a fully integrated digital inverter is tested while stretched up to 20% elongation. As a proof of the versatility of mesa-shaped geometry, a biocompatible and stretchable sensor for temperature mapping is also realized. Using pectin, which is a temperature-sensitive material present in plant cells, the response of the sensor shows current modulation from 13 to 28 °C and functionality up to 15% strain. These results demonstrate the performance of highly flexible electronics for a broad variety of applications, including smart skin and health monitoring.
History
Publication status
- Published
File Version
- Accepted version
Journal
Advanced Functional MaterialsISSN
1616301XPublisher
WileyExternal DOI
Issue
30Volume
28Page range
1705132 1-9Department affiliated with
- Engineering and Design Publications
Research groups affiliated with
- Sensor Technology Research Centre Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-05-31First Open Access (FOA) Date
2019-05-27First Compliant Deposit (FCD) Date
2018-05-30Usage metrics
Categories
No categories selectedKeywords
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC