title: Vectorial strain gauge method using single flexible orthogonal polydimethylsiloxane gratings.
abstract: A vectorial strain gauge method using a single sensing element is reported based on the double-sided polydimethylsiloxane (PDMS) Fraunhofer diffraction gratings structures. Using O2 plasma treatment steps, orthogonal wrinkled gratings were fabricated on both sides of a pre-strained PDMS film. Diffracted laser spots from this structure have been used to experimentally demonstrate, that any applied strain can be quantitatively characterized in both the x and y directions with an error of less than 0.6% and with a gauge factor of approximately 10. This simple and low cost technology which is completely different from the traditional vectorial strain gauge method, can be applied to surface vectorial strain measurement and multi-axis integrated mechanical sensors.
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Guo
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Tang
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Kun
authors.initials: K
authors.lastname: Qian
authors.affiliation: Department of Applied Physics, National Technical University of Athens, GR-15780 Zografou, Greece.
authors.forename: Dimitris
authors.initials: D
authors.lastname: Tsoukalas
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Miaomiao
authors.initials: M
authors.lastname: Zhao
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Yang
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Binzhen
authors.initials: B
authors.lastname: Zhang
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Xiujian
authors.initials: X
authors.lastname: Chou
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Chenyang
authors.initials: C
authors.lastname: Xue
authors.affiliation: Science and Technology on Electronic Test &Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
authors.forename: Wendong
authors.initials: W
authors.lastname: Zhang