Effect of microstructures of PVDF on surface adhesive forces |
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Authors: | Taekwon Jee Hyungoo Lee Bartosz Mika Hong Liang |
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Affiliation: | (1) Department of Mechanical Engineering, Texas A&M University, 3123 TAMU, College Station, TX 77843-3123, USA |
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Abstract: | This research studies the effects of microstructures of poly vinylidene fluoride (PVDF) on its adhesion force with the probe
of an atomic force microscope (AFM). The adhesion problem is currently a bottleneck for the development of micro-electro-mechanical
systems (MEMS). Understanding the surface adhesion mechanisms is an important step to advance MEMS technology. In the present
work, we fabricated PVDF thinfilms using spin casting and in situ corona poling methods. The microstructure was thus changed from α to the mixture of β and γ phases. Surface forces were then
evaluated using an AFM. It was found that the adhesion forces between the AFM probe and the polymer surfaces were affected
by microstructures. This article discusses details of our findings. |
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Keywords: | piezoelectric polymers adhesion micro-electro-mechanical systems (MEMS) AFM friction |
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