Journal ArticleDOI
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
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TLDR
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.Abstract:
Electronic devices have advanced from their heavy, bulky origins to become smart, mobile appliances. Nevertheless, they remain rigid, which precludes their intimate integration into everyday life. Flexible, textile and stretchable electronics are emerging research areas and may yield mainstream technologies. Rollable and unbreakable backplanes with amorphous silicon field-effect transistors on steel substrates only 3 μm thick have been demonstrated. On polymer substrates, bending radii of 0.1 mm have been achieved in flexible electronic devices. Concurrently, the need for compliant electronics that can not only be flexed but also conform to three-dimensional shapes has emerged. Approaches include the transfer of ultrathin polyimide layers encapsulating silicon CMOS circuits onto pre-stretched elastomers, the use of conductive elastomers integrated with organic field-effect transistors (OFETs) on polyimide islands, and fabrication of OFETs and gold interconnects on elastic substrates to realize pressure, temperature and optical sensors. Here we present a platform that makes electronics both virtually unbreakable and imperceptible. Fabricated directly on ultrathin (1 μm) polymer foils, our electronic circuits are light (3 g m(-2)) and ultraflexible and conform to their ambient, dynamic environment. Organic transistors with an ultra-dense oxide gate dielectric a few nanometres thick formed at room temperature enable sophisticated large-area electronic foils with unprecedented mechanical and environmental stability: they withstand repeated bending to radii of 5 μm and less, can be crumpled like paper, accommodate stretching up to 230% on prestrained elastomers, and can be operated at high temperatures and in aqueous environments. Because manufacturing costs of organic electronics are potentially low, imperceptible electronic foils may be as common in the future as plastic wrap is today. Applications include matrix-addressed tactile sensor foils for health care and monitoring, thin-film heaters, temperature and infrared sensors, displays, and organic solar cells.read more
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Journal ArticleDOI
Robust Tactile Descriptors for Discriminating Objects From Textural Properties via Artificial Robotic Skin
Mohsen Kaboli,Gordon Cheng +1 more
TL;DR: A set of novel tactile descriptors to enable robotic systems to extract robust tactile information during tactile object explorations, regardless of the number of the tactile sensors, sensing technologies, type of exploratory movements, and duration of the objects’ surface exploration are proposed.
Journal ArticleDOI
Sprayable elastic conductors based on block copolymer silver nanoparticle composites.
TL;DR: Block copolymer silver nanoparticle composite elastic conductors were fabricated through solution blow spinning and subsequent nanoparticle nucleation, allowing for conformal deposition onto nonplanar substrates and the ability to tune the strain dependence of the electrical properties by adjusting nanoparticle precursor concentration or localized nanoparticles nucleation.
Journal ArticleDOI
Wearable Fall Detector using Integrated Sensors and Energy Devices
Sungmook Jung,Seungki Hong,Jaemin Kim,Sang-Kyu Lee,Taeghwan Hyeon,Minbaek Lee,Dae-Hyeong Kim +6 more
TL;DR: A wearable fall detection system composed of a wristband-type deformable triboelectric generator and lithium ion battery in conjunction with integrated sensors, controllers, and wireless units, which would provide new opportunities in the mobile electronics and wearable healthcare.
Journal ArticleDOI
Electronic-skin compasses for geomagnetic field-driven artificial magnetoreception and interactive electronics
TL;DR: Magnetic field sensors based on the anisotropic magnetoresistance effect and arranged in a Wheatstone bridge configuration can provide an artificial magnetoreception that allows a person to orientate in an outdoor setting and manipulate objects in virtual reality.
References
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Journal ArticleDOI
Materials and mechanics for stretchable electronics
TL;DR: Inorganic and organic electronic materials in microstructured and nanostructured forms, intimately integrated with elastomeric substrates, offer particularly attractive characteristics, with realistic pathways to sophisticated embodiments, and applications in systems ranging from electronic eyeball cameras to deformable light-emitting displays are described.
Journal ArticleDOI
Skin-like pressure and strain sensors based on transparent elastic films of carbon nanotubes
Darren J. Lipomi,Michael Vosgueritchian,Benjamin C. K. Tee,Sondra L. Hellstrom,Jennifer A. Lee,Courtney H. Fox,Zhenan Bao +6 more
TL;DR: Transparent, conducting spray-deposited films of single-walled carbon nanotubes are reported that can be rendered stretchable by applying strain along each axis, and then releasing this strain.
Journal ArticleDOI
A high-mobility electron-transporting polymer for printed transistors
He Yan,Zhihua Chen,Yan Zheng,Chris Newman,Jordan R. Quinn,Florian Dötz,Marcel Kastler,Antonio Facchetti +7 more
TL;DR: A highly soluble and printable n-channel polymer exhibiting unprecedented OTFT characteristics under ambient conditions in combination with Au contacts and various polymeric dielectrics is reported and all-printed polymeric complementary inverters have been demonstrated.
PatentDOI
Stretchable form of single crystal silicon for high performance electronics on rubber substrates
TL;DR: In this article, the authors present stretchable and printable semiconductors and electronic circuits capable of providing good performance when stretched, compressed, flexed, or otherwise deformed.
Journal ArticleDOI
Stretchable and foldable silicon integrated circuits.
Dae-Hyeong Kim,Jong Hyun Ahn,Won Mook Choi,Hoon-Sik Kim,Tae-Ho Kim,Jizhou Song,Yonggang Huang,Zhuangjian Liu,Chun Lu,John A. Rogers +9 more
TL;DR: A simple approach to high-performance, stretchable, and foldable integrated circuits that integrate inorganic electronic materials, including aligned arrays of nanoribbons of single crystalline silicon, with ultrathin plastic and elastomeric substrates.