Article
A Nano-Cheese-Cutter to Directly Measure Interfacial Adhesion of Freestanding Nano-Fibers
Journal of Applied Physics
Document Type
Article
Publication Date
1-27-2012
Disciplines
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.
Citation Information
Xin Wang, Johnny F. Najem, Shing Chung Josh Wong and Kai-tak Wan. "A Nano-Cheese-Cutter to Directly Measure Interfacial Adhesion of Freestanding Nano-Fibers" Journal of Applied Physics Vol. 111 Iss. 2 (2012) p. 024315 - 024315 Available at: http://works.bepress.com/shing-chung_wong/6/
http://dx.doi.org/10.1063/1.3677947
© 2012 American Institute of Physics