Abstract The MICROSCOPE mission aims to test the weak equivalence principle (WEP) in orbit with an unprecedented precision of 10 −15 on Eötvös parameter thanks electrostatic accelerometers board a drag-free micro-satellite. is determined by statistical errors, due environment and instrument noises, systematic errors which this paper devoted. Systematic error sources can be divided into three ca...

field ion microscopy (fim) and scanning tunneling microscopy (stm) have found a wide application in nanotechnology. these microscopes use a metallic nanotip for image acquisition. resolution of fim and stm images depends largely on the radius of nanotip apex; the smaller the radius the higher the resolution. in this research, for tungsten nanotip fabrication, electrochemical etching of tungsten...