Title

A Nano-Cheese-Cutter to Directly Measure Interfacial Adhesion of Freestanding Nano-Fibers

Authors

Xin Wang
Johnny F. Najem, University of Akron Main Campus
Shing Chung Josh Wong, University of Akron Main CampusFollow
Kai-tak Wan

Document Type

Article

Publication Date

1-27-2012

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.

Publication Title

Journal of Applied Physics

Volume

111

Issue

2

First Page

024315

Last Page

024315

Comments

http://dx.doi.org/10.1063/1.3677947

© 2012 American Institute of Physics

Recommended Citation

Wang, Xin; Najem, Johnny F.; Wong, Shing Chung Josh; and Wan, Kai-tak, "A Nano-Cheese-Cutter to Directly Measure Interfacial Adhesion of Freestanding Nano-Fibers" (2012). Mechanical Engineering Faculty Research. 342.
https://ideaexchange.uakron.edu/mechanical_ideas/342