title: Highly skin-conformal microhairy sensor for pulse signal amplification.
abstract: A bioinspired microhairy sensor is developed to enable ultraconformability on nonflat surfaces and significant enhancement in the signal-to-noise ratio of the retrieved signals. The device shows ≈12 times increase in the signal-to-noise ratio in the generated capacitive signals, allowing the ultraconformal microhair pressure sensors to be capable of measuring weak pulsations of internal jugular venous pulses stemming from a human neck.
authors.affiliation: Department of Chemical Engineering, Stanford University, Stanford, California, 94305, USA; School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 440-746, South Korea.
authors.forename: Changhyun
authors.initials: C
authors.lastname: Pang
authors.forename: Ja Hoon
authors.initials: JH
authors.lastname: Koo
authors.forename: Amanda
authors.initials: A
authors.lastname: Nguyen
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Caves
authors.forename: Myung-Gil
authors.initials: MG
authors.lastname: Kim
authors.forename: Alex
authors.initials: A
authors.lastname: Chortos
authors.forename: Kwanpyo
authors.initials: K
authors.lastname: Kim
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Wang
authors.forename: Jeffrey B-H
authors.initials: JB
authors.lastname: Tok
authors.forename: Zhenan
authors.initials: Z
authors.lastname: Bao
mesh_terms: D000818:Animals; D032701:Biomimetics / Q000295:instrumentation*; D006339:Heart Rate; D006801:Humans; D059629:Signal-To-Noise Ratio; D012867:Skin; D013552:Swine
keywords: biosensors; flexible electronics; microhairs; pulsation