A monolithic micro-tensile tester fabricated by femtosecond laser to inves- tigate fused silica mechanical properties
نویسندگان
چکیده
We present an experimental method to fill in the existing gap of characterization tools for the mechanical testing of fused silica and silica’s polymorphic phases in the microand nanoscales. The approach is based on a monolithic tensile tester, entirely made of fused silica for which the same femtosecond laser in not only used for the fabrication of the device, but also for its operation (loading the specimen) as well as for in situ measuring deformations resulting from the test beam’s elongation, thanks to the use of the third harmonic generation (THG). The use of the THG as an inline laser metrology tool is extensively discussed. The validity of the experimental approach is presented by the direct elastic modulus measurement of fused silica at high stresses up to 1.8 GPa.
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