title: Artificial cilia of magnetically tagged polymer nanowires for biomimetic mechanosensing.
abstract: Polymeric nanowires of polypyrrole have been implemented as artificial cilia on giant-magneto-resistive multilayer sensors for a biomimetic sensing approach. The arrays were tagged with a magnetic material, the stray field of which changes relative to the underlying sensor as a consequence of mechanical stimuli which are delivered by a piezoactuator. The principle resembles balance sensing in mammals. Measurements of the sensor output voltage suggest a proof of concept at frequencies of around 190 kHz and a tag thickness of ∼300 nm. Characterization was performed by scanning electron microscopy and magnetic force microscopy. Micromagnetic and finite-element simulations were conducted to assess basic sensing aspects.
authors: Austrian Institute of Technology-AIT, Division Nano Systems, Donau-City-Straße 1, A-1220 Vienna, Austria. philipp-schroeder@web.de
authors: P
authors: P
authors: Schroeder
authors: J
authors: J
authors: Schotter
authors: A
authors: A
authors: Shoshi
authors: M
authors: M
authors: Eggeling
authors: O
authors: O
authors: Bethge
authors: A
authors: A
authors: Hütten
authors: H
authors: H
authors: Brückl
mesh_terms: D000818:Animals; D040761:Biomimetic Materials; D002923:Cilia / Q000502:physiology*; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D008280:Magnetics / Q000295:instrumentation; D008465:Mechanoreceptors / Q000502:physiology*; D040542:Mechanotransduction, Cellular / Q000502:physiology; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D008904:Miniaturization; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation; D011108:Polymers / Q000737:chemistry*; D013314:Stress, Mechanical; D014159:Transducers
chemical_list: D011108:Polymers