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Enhancing the Matrix Addressing of Flexible Sensory Arrays by a Highly Nonlinear Threshold Switch
Author(s) -
Wang Ming,
Wang Wei,
Leow Wan Ru,
Wan Changjin,
Chen Geng,
Zeng Yi,
Yu Jiancan,
Liu Yaqing,
Cai Pingqiang,
Wang Hong,
Ielmini Daniele,
Chen Xiaodong
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201802516
Subject(s) - materials science , electronic skin , flexibility (engineering) , wearable computer , soft robotics , nonlinear system , wearable technology , electronic circuit , nanotechnology , sensory system , optoelectronics , electronic engineering , computer science , electrical engineering , artificial intelligence , embedded system , robot , engineering , physics , psychology , statistics , mathematics , quantum mechanics , cognitive psychology
The increasing need for smart systems in healthcare, wearable, and soft robotics is creating demand for low‐power sensory circuits that can detect pressure, temperature, strain, and other local variables. Among the most critical requirements, the matrix circuitry to address the individual sensor device must be sensitive, immune to disturbances, and flexible within a high‐density sensory array. Here, a strategy is reported to enhance the matrix addressing of a fully integrated flexible sensory array with an improvement of 10 8 fold in the maximum readout value of impedance by a bidirectional threshold switch. The threshold switch shows high flexibility (bendable to a radius of about 1 mm) and a high nonlinearity of ≈10 10 by using a nanocontact structure strategy, which is revealed and validated by molecular dynamics simulations and experiments at variable mechanical stress. Such a flexible electronic switch enables a new generation of large‐scale flexible and stretchable electronic and optoelectronic systems.