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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Hybrid Core-Shell Nanowire Forests as Self-Selective Chemical Connectors

Cited 36 times inthomson ciCited 33 times inthomson ci
Title
Hybrid Core-Shell Nanowire Forests as Self-Selective Chemical Connectors
Author
Ko, HyunhyubLee, JonghoSchubert, Bryan E.Chueh, Yu-LunLeu, Paul W.Fearing, Ronald S.Javey, Ali
Keywords
Adhesion behaviors; Adhesion strengths; Binding strength; Electrostatic interactions; Geometric configurations; High aspect ratio; Hybrid core-shell; Macro scale; Organic nanowires; Reversible binding; Self-similar; Small scale; Strength ratios; Van der waals
Issue Date
2009-05
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.9, no.5, pp.2054 - 2058
Abstract
Conventional connectors utilize mechanical, magnetic, or electrostatic interactions to enable highly specific and reversible binding of the components (i.e., mates) for a wide range of applications. As the connectors are miniaturized to small scales, a number of shortcomings, including low binding strength, high engagement/disengagement energies, difficulties with the engagement, fabrication challenges, and the lack of reliability are presented that limit their successful operation. Here, we report unisex, chemical connectors based on hybrid, inorganic/organic nanowire (NW) forests that utilize weak van der Waals bonding that is amplified by the high aspect ratio geometric configuration of the NWs to enable highly specific and versatile binding of the components. Uniquely, NW chemical connectors exhibit high macroscopic shear adhesion strength (similar to 163 N/cm(2)) with minimal binding to non-self-similar surfaces, anisotropic adhesion behavior (shear to normal strength ratio similar to 25), reusability (similar to 27 attach/detach cycles), and efficient binding for both micro- and macroscale dimensions.
URI
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DOI
10.1021/nl900343b
ISSN
1530-6984
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ECHE_Journal Papers
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