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Weak Current Measurement Report for Superconducting Material by Lock-in Amplifier
Samples of superconducting material applied by a weak alternating voltage can occur a weak current through itself, which can be measured by LIA in order to avoid the measurement error from thermoelectric EMF effect.
Application in Metal Material Tension Test
Tensile tests are to be carried out when evaluating the strength of metallic materials. In order to detect small changes in metal cracks or shape, you can measure the AC resistance of sample (called AC potential method).
Scanning Probe Microscopy
OE1022 Applied to Scanning Tunneling Microscopy Measurements in Superconducting Thin Films
In 2017, Jinfeng Jia and Canhua Liu of Shanghai Jiaotong University published an article entitled "Development of in situ two-coil mutual inductance technique in a multifunctional scanning tunneling microscope" article, reporting the development of in situ two-coil mutual inductance technique in a multifunctional scanning tunneling microscope.
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