Epidermal Electronics Journal Club-1

Epidermal Electronics Journal Club-1 - L d is the...

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Epidermal Electronics Kim, Lu, Ma et al. University of Illinois at Urbana-Champaign
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Traditional Epidermal Electronics Bulk electrodes mounted on skin Tapes, clamps, straps, or needles Conductive gels Terminal connections to power supply, circuitry, etc.
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New Approach Developing ultra-thin, lightweight, stretchable, “skin-like” membranes including electrodes, electronics, sensors, power supply, and communication components
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Device Attachment Water-soluble PVA serves as a temporary support for placing the system on the skin, and then dissolves. Analogous to a temporary transfer tattoo. Primary adhesion through van der Waals forces
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Skin Deformation Skin is allowed to deform freely and reversibly “Mechanically invisible” Very low mass: ~.09g
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Mechanical Properties
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E EES = E int(1 + L d/ L s) E int effective modulus of the interconnects,
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Unformatted text preview: L d is the characteristic device size L s is the distance between devices Thinner, lower modulus sensor has better attachment to the skin E EES (~140 kPa) and EI EES (~0.3 nNm) Filamentary serpentine (FS) interconnect minimizes effective modulus of the EES Multifunctional operation FS design MOSFET active electrophysiological sensor Use the common source amplifier FS design temperature sensor and strain gauge based on resistence LED and photodetectors LED and wireless induction coil Solar cell Silicon RF diode ECG & EMG recording EMG Frequency Analysis EMG sensor for human-machine interface EEG measurement of alpha rhythm Conclusion and limitation A lot of applications in small scale integrated circuits Not suitable for long term use...
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Epidermal Electronics Journal Club-1 - L d is the...

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