Design of testing chip for measuring mechanical properties of thin films

Abstract

Uniaxial tensile test is the most reliable way to measure mechanical properties of thin films. The difficulties of uniaxial tensile test are how to fabricate small and stress-free specimen, align and trip the specimen, generate small forces and measure strain. A novel tensile testing chip to measure thin film specimens with large elongation was proposed in this paper, and it was fabricated by UV-LIGA (Ultraviolet Lithographie GalVanoformung Abformung) technology. This novel testing chip has good alignment and can endure large deformation.