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Ultrathin Nanogenerators as Self‐Powered/Active Skin Sensors for Tracking Eye Ball Motion
Author(s) -
Lee Sangmin,
Hinchet Ronan,
Lee Yean,
Yang Ya,
Lin ZongHong,
Ardila Gustavo,
Montès Laurent,
Mouis Mireille,
Wang Zhong Lin
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201301971
Subject(s) - nanogenerator , materials science , anodizing , piezoelectricity , human motion , nanotechnology , ball (mathematics) , thin film , tweezers , voltage , anodic aluminum oxide , optoelectronics , aluminium , composite material , electrical engineering , computer science , engineering , artificial intelligence , motion (physics) , medicine , mathematical analysis , alternative medicine , mathematics , pathology , fabrication
Ultrathin piezoelectric nanogenerator (NG) with a total thickness of ≈16 μm is fabricated as an active or self‐powered sensor for monitoring local deformation on a human skin. The NG was based on an anodic aluminum oxide (AAO) as an insulating layer grown on a thin Al foil by anodization, on which a thin film made of aligned ZnO nanowire compacted arrays is grown by solution chemistry. The performance of the NG is characterized with the assistance of the finite element method (FEM) simulation. The extremely thin NG is attached on the surface of an eyelid, and its output voltage/current characterizes the motion of the eye ball underneath. Since there is no external power needed for the operation of the NG, this self‐powered or active sensor can be effective in monitoring sleeping behavior, brain activities, and spirit status of a person as well as any biological associated skin deformation.