Journal
LANGMUIR
Volume 27, Issue 17, Pages 11008-11016Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la201498u
Keywords
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Funding
- Korean Government [KRF-2008-357-D00049]
- National Science Foundation through the Center of Integrated Nanomechanical Systems [EEC-0832819, DMR-0804646]
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Ordered low-density polyethylene (LDPE) nanofiber arrays are fabricated from silicon nanowire (SiNW) templates synthesized by a simple wet-chemical process based on metal-assisted electroless etching combined with colloidal lithography. The geometrical effect of nanofibrillar structures on their macroscale friction is investigated over a wide range of diameters and lengths under the same fiber density. The optimum geometry for contacting a smooth glass surface is presented with discussions on the compromise between fiber tip-contact area and fiber compliance. A friction design map is developed, which shows that the theoretical optimum design condition agrees well with the LDPE nanofiber geometries exhibiting high measured friction.
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