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
TLDR
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.Abstract:
Flexible pressure sensors are essential parts of an electronic skin to allow future biomedical prostheses and robots to naturally interact with humans and the environment. Mobile biomonitoring in long-term medical diagnostics is another attractive application for these sensors. Here we report the fabrication of flexible pressure-sensitive organic thin film transistors with a maximum sensitivity of 8.4 kPa(-1), a fast response time of 15,000 cycles and a low power consumption of <1 mW. The combination of a microstructured polydimethylsiloxane dielectric and the high-mobility semiconducting polyisoindigobithiophene-siloxane in a monolithic transistor design enabled us to operate the devices in the subthreshold regime, where the capacitance change upon compression of the dielectric is strongly amplified. We demonstrate that our sensors 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.read more
Citations
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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.
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Pursuing prosthetic electronic skin.
Alex Chortos,Jia Liu,Zhenan Bao +2 more
TL;DR: This Review will cover materials and devices designed for mimicking the skin's ability to sense and generate biomimetic signals.
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A wearable and highly sensitive pressure sensor with ultrathin gold nanowires
Shu Gong,Willem Heinrich Schwalb,Yongwei Wang,Yi Chen,Yue Tang,Jye Si,Bijan Shirinzadeh,Wenlong Cheng +7 more
TL;DR: An efficient, low-cost fabrication strategy to construct a highly sensitive, flexible pressure sensor by sandwiching ultrathin gold nanowire-impregnated tissue paper between two thin polydimethylsiloxane sheets is reported, enabling facile large-area integration and patterning for mapping spatial pressure distribution.
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Flexible and Stretchable Physical Sensor Integrated Platforms for Wearable Human-Activity Monitoringand Personal Healthcare.
Tran Quang Trung,Nae-Eung Lee +1 more
TL;DR: The latest successful examples of flexible and stretchable physical sensors for the detection of temperature, pressure, and strain, as well as their novel structures, technological innovations, and challenges, are reviewed.
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A graphene-based electrochemical device with thermoresponsive microneedles for diabetes monitoring and therapy
Hyunjae Lee,Tae-Kyu Choi,Young Bum Lee,Hye Rim Cho,Roozbeh Ghaffari,Liu Wang,Hyung Jin Choi,Taek Dong Chung,Nanshu Lu,Taeghwan Hyeon,Seung Hong Choi,Seung Hong Choi,Dae-Hyeong Kim +12 more
TL;DR: G graphene doped with gold and combined with a gold mesh has improved electrochemical activity over bare graphene, sufficient to form a wearable patch for sweat-based diabetes monitoring and feedback therapy and can be thermally actuated to deliver Metformin and reduce blood glucose levels in diabetic mice.
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Elastomeric Transistor Stamps: Reversible Probing of Charge Transport in Organic Crystals
Vikram C. Sundar,Jana Zaumseil,Vitaly Podzorov,Etienne Menard,R. L. Willett,Takao Someya,Michael Gershenson,John A. Rogers +7 more
TL;DR: This method, which eliminates exposure of the fragile organic surface to the hazards of conventional processing, enables fabrication of rubrene transistors with charge carrier mobilities as high as ∼15 cm2/V·s and subthreshold slopes as low as 2nF·V/decade·cm2.
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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
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