Journal ArticleDOI
Organic Nonvolatile Memory Transistors for Flexible Sensor Arrays
Tsuyoshi Sekitani,Tomoyuki Yokota,Ute Zschieschang,Hagen Klauk,Siegfried Bauer,Ken Takeuchi,Makoto Takamiya,Takayasu Sakurai,Takao Someya +8 more
TLDR
A sensor matrix is realized that detects the spatial distribution of applied mechanical pressure and stores the analog sensor input as a two-dimensional image over long periods of time by integrating a flexible array of organic floating-gate transistors with a pressure-sensitive rubber sheet.Abstract:
Using organic transistors with a floating gate embedded in hybrid dielectrics that comprise a 2-nanometer-thick molecular self-assembled monolayer and a 4-nanometer-thick plasma-grown metal oxide, we have realized nonvolatile memory arrays on flexible plastic substrates. The small thickness of the dielectrics allows very small program and erase voltages (≤6 volts) to produce a large, nonvolatile, reversible threshold-voltage shift. The transistors endure more than 1000 program and erase cycles, which is within two orders of magnitude of silicon-based floating-gate transistors widely employed in flash memory. By integrating a flexible array of organic floating-gate transistors with a pressure-sensitive rubber sheet, we have realized a sensor matrix that detects the spatial distribution of applied mechanical pressure and stores the analog sensor input as a two-dimensional image over long periods of time.read more
Citations
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Journal ArticleDOI
Low-Power, Flexible Nonvolatile Organic Transistor Memory Based on an Ultrathin Bilayer Dielectric Stack
Journal ArticleDOI
Near-Field Electrospun Piezoelectric Fibers as Sound-Sensing Elements.
TL;DR: The developed ultrathin ISSE of near-field electrospun piezoelectric fibers has the advantage of direct—write fabrication on highly flexible substrates and low cost.
Journal ArticleDOI
Ultrasensitive Piezoresistive Pressure Sensors Based on Interlocked Micropillar Arrays
TL;DR: In this article, a piezoresistive wearable electronic skin based on conductive composite elastomers with interlocked geometry of micropillar arrays is presented, which enables the huge variation of contact area and thus the contact resistance between interlocked micro-array arrays when they are deformed in response to external pressure stimuli.
Journal ArticleDOI
Nonvolatile memories using the electrets of conjugated rod-coil block copolymer and its nanocomposite with single wall carbon nanotubes
TL;DR: In this article, a pentacene-based organic field effect transistor (OFET) memory device using the electrets of conjugated rod-coil block copolymers, poly[2,7-(9,9-dihexylfluorene)]-block poly(stearyl acrylate) (PF-b-PSA) and their nanocomposites with single-wall carbon nanotubes (SWCNT) was presented.
Journal ArticleDOI
Development of flexible ZnO thin film surface acoustic wave strain sensors on ultrathin glass substrates
Jinkai Chen,Hongwei W. Guo,X.L. He,W B Wang,Weipeng Xuan,Hao Jin,Shurong Dong,Xiaozhi Z. Wang,Yang Xu,Shisheng S. Lin,Sean M. Garner,Jikui Luo,Jikui Luo +12 more
TL;DR: In this paper, a flexible surface acoustic wave (SAW) strain sensor made on ZnO/ultrathin glass (100 μm) substrates has been developed.
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