Journal ArticleDOI
Flexible organic transistors and circuits with extreme bending stability
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TLDR
This work demonstrates organic transistors and complementary circuits that continue to operate without degradation while being folded into a radius of 100 μm, enabled by a very thin plastic substrate, an atomically smooth planarization coating and a hybrid encapsulation stack that places the transistors in the neutral strain position.Abstract:
Flexible electronic circuits are an essential prerequisite for the development of rollable displays, conformable sensors, biodegradable electronics and other applications with unconventional form factors. The smallest radius into which a circuit can be bent is typically several millimetres, limited by strain-induced damage to the active circuit elements. Bending-induced damage can be avoided by placing the circuit elements on rigid islands connected by stretchable wires, but the presence of rigid areas within the substrate plane limits the bending radius. Here we demonstrate organic transistors and complementary circuits that continue to operate without degradation while being folded into a radius of 100 μm. This enormous flexibility and bending stability is enabled by a very thin plastic substrate (12.5 μm), an atomically smooth planarization coating and a hybrid encapsulation stack that places the transistors in the neutral strain position. We demonstrate a potential application as a catheter with a sheet of transistors and sensors wrapped around it that enables the spatially resolved measurement of physical or chemical properties inside long, narrow tubes.read more
Citations
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An ultra-lightweight design for imperceptible plastic electronics
Martin Kaltenbrunner,Tsuyoshi Sekitani,Tsuyoshi Sekitani,Jonathan T. Reeder,Jonathan T. Reeder,Tomoyuki Yokota,Kazunori Kuribara,Takeyoshi Tokuhara,Michael Drack,Reinhard Schwödiauer,Ingrid Graz,Simona Bauer-Gogonea,Siegfried Bauer,Takao Someya,Takao Someya +14 more
TL;DR: In this paper, the authors present a platform that makes electronics both virtually unbreakable and imperceptible on polyimide polysilicon elastomers, which can be operated at high temperatures and in aqueous environments.
Journal ArticleDOI
25th anniversary article: organic field-effect transistors: the path beyond amorphous silicon.
TL;DR: In this paper, the state-of-the-art in organic field effect transistors (OFETs) are reviewed in light of requirements for demanding future applications, in particular active-matrix addressing for flexible organic light-emitting diode (OLED) displays.
Journal ArticleDOI
25th Anniversary Article: The Evolution of Electronic Skin (E-Skin): A Brief History, Design Considerations, and Recent Progress
TL;DR: Electronic networks comprised of flexible, stretchable, and robust devices that are compatible with large-area implementation and integrated with multiple functionalities is a testament to the progress in developing an electronic skin akin to human skin.
Journal ArticleDOI
Flexible polymer transistors with high pressure sensitivity for application in electronic skin and health monitoring
Gregor Schwartz,Benjamin C. K. Tee,Jianguo Mei,Anthony L. Appleton,Do Hwan Kim,Do Hwan Kim,Huiliang Wang,Zhenan Bao +7 more
TL;DR: It is demonstrated that the flexible pressure-sensitive organic thin film transistors fabrication can be used for non-invasive, high fidelity, continuous radial artery pulse wave monitoring, which may lead to the use of flexible pressure sensors in mobile health monitoring and remote diagnostics in cardiovascular medicine.
Journal ArticleDOI
A flexible and highly sensitive strain-gauge sensor using reversible interlocking of nanofibres
Changhyun Pang,Gil-Yong Lee,Tae Il Kim,Sang Moon Kim,Hong Nam Kim,Sung-Hoon Ahn,Kahp-Yang Suh +6 more
TL;DR: A simple architecture for a flexible and highly sensitive strain sensor that enables the detection of pressure, shear and torsion and can be used to monitor signals ranging from human heartbeats to the impact of a bouncing water droplet on a superhydrophobic surface is presented.
References
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Journal ArticleDOI
Room-temperature fabrication of transparent flexible thin-film transistors using amorphous oxide semiconductors
TL;DR: A novel semiconducting material is proposed—namely, a transparent amorphous oxide semiconductor from the In-Ga-Zn-O system (a-IGZO)—for the active channel in transparent thin-film transistors (TTFTs), which are fabricated on polyethylene terephthalate sheets and exhibit saturation mobilities and device characteristics are stable during repetitive bending of the TTFT sheet.
Journal ArticleDOI
Stretchable active-matrix organic light-emitting diode display using printable elastic conductors
Tsuyoshi Sekitani,Hiroyoshi Nakajima,Hiroki Maeda,Takanori Fukushima,Takuzo Aida,Kenji Hata,Takao Someya +6 more
TL;DR: The manufacture of printable elastic conductors comprising single-walled carbon nanotubes (SWNTs) uniformly dispersed in a fluorinated rubber is described, which is constructed a rubber-like stretchable active-matrix display comprising integrated printed elastic conductor, organic transistors and organic light-emitting diodes.
Journal ArticleDOI
Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes
Takao Someya,Yusaku Kato,Tsuyoshi Sekitani,Shingo Iba,Yoshiaki Noguchi,Yousuke Murase,Hiroshi Kawaguchi,Takayasu Sakurai +7 more
TL;DR: This work has successfully developed conformable, flexible, large-area networks of thermal and pressure sensors based on an organic semiconductor, and, by means of laminated sensor networks, the distributions of pressure and temperature are simultaneously obtained.
Journal ArticleDOI
Ultralow-power organic complementary circuits
TL;DR: This work demonstrates an organic circuit with very low power consumption that uses a self-assembled monolayer gate dielectric and two different air-stable molecular semiconductors (pentacene and hexadecafluorocopperphthalocyanine, F16CuPc) to implement transistors, circuits, displays and sensors on arbitrary substrates.
Journal ArticleDOI
A hemispherical electronic eye camera based on compressible silicon optoelectronics
Heung Cho Ko,Mark P. Stoykovich,Jizhou Song,Viktor Malyarchuk,Won Mook Choi,Chang Jae Yu,Joseph B. Geddes,Jianliang Xiao,Shuodao Wang,Yonggang Huang,John A. Rogers +10 more
TL;DR: These methods, taken together with the theoretical analyses of their associated mechanics, provide practical routes for integrating well-developed planar device technologies onto the surfaces of complex curvilinear objects, suitable for diverse applications that cannot be addressed by conventional means.