Ernst Zinterl

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Questions related from Ernst Zinterl

PCB manufacturing: How to detect Cu residuals in Ni/Au surface finishing?

Metroology method scanning big areas ~ 10" scale to detect Cu residuals in a metal layer compound with Ni/Auf surface finishing

08 January 2024 896 0 View

Looking for high efficient light sources (Laser, HE LED) for Spectroscopic Ellipsometry?

Conventional light sources have a penetration depth of a few nanometers in metal layers and cannot be used for spectroscopic ellipsometry purpose to measure layer thicknesses of a few 100 nanometres.

28 October 2020 7,772 4 View

What is the minimum experimental setup for failure detection in conducting wires and tracks by using zero phase shift of AC 2nd and 3rd harmonic?

Due to instant dissipation of heat in conducting wire cracks, ohmic resistance of 2nd harmonic of an AC current shows zero phase shift to temperature of the generated heat wave. Following the same...

30 April 2020 7,992 0 View