Abstract
A nano-cheese-cutter is fabricated to directly measure the adhesion between two freestanding nano-fibers. A single electrospun fiber is attached to the free end of an atomic force microscope cantilever, while a similar fiber is similarly prepared on a mica substrate in an orthogonal direction. External load is applied to deform the two fibers into complementary V-shapes, and the force measurement allows the elastic modulus to be determined. At a critical tensile load, “pull-off” occurs when the adhering fibers spontaneously detach from each other, yielding the interfacial adhesion energy. Loading-unloading cycles are performed to investigate repeated adhesion-detachment and surface degradation.
Keywords
nano-cheese-cutter, electrospun fiber
Disciplines
Industrial Engineering | Mechanical Engineering
Publisher
American Institute of Physics
Publication Date
1-27-2012
Rights Information
Copyright (2012) American Institute of Physics
Rights Holder
American Institute of Physics
Recommended Citation
Wang, Xin; Najem, Johnny F.; Wong, Shing-Chung; and Wan, Kai-tak, "A nano-cheese-cutter to directly measure interfacial adhesion of freestanding nano-fibers" (2012). Mechanical and Industrial Engineering Faculty Publications. Paper 52.
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Additional Files
nanofig1.tif (4830 kB)nanofig2.tif (332 kB)
nanofig3.tif (287 kB)
nanofig4.tif (310 kB)
nanofig5.tif (151 kB)
nanofig6.tif (288 kB)
COinS
Notes
Originally published in Journal of Applied Physics v.111 (2012): 024315. DOI http://dx.doi.org/10.1063/1.3677947">10.1063/1.3677947.