Author

M. Kupnik

2 papers indexed here

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Open access Oct 2026

ChrisBox: An Open-Source 4-Channel Portable Charge Amplifier for Research and Education

Piezoelectric sensors convert electric charge in response to mechanical loading and are widely studied for their high sensitivity. In particular, ferroelectret sensors provide the flexibility and material system design that enable biocompatibility. Insole-based gait and pressure sensing remain active research topics, y...

Sven Suppelt, Dominik Werner, A. Altmann et al. · Hardware · 0 citations

Preprint Oct 2026

An unstructured finite-volume Helmholtz method with perfectly matched layers for heterogeneous two-phase acoustics

This paper presents a cell-centred unstructured finite-volume method for time-harmonic two-phase acoustics. A volume-fraction representation supplies density and acoustic compressibility. Face fractions average available neighbouring planar interface cuts independently of velocity direction, retaining the established o...

Chuan-Chao Xu, Jun Liu, J. Dörsam et al. · 0 citations