A simple electronic circuit is described using four common and very inexpensive analog multiplexer/demultiplexer chips. These analog switches are used to select eight different wiring configurations to a van der Pauw sample. Several interfacing schemes to a PC are suggested. The van der Pauw resistivity and Hall voltage expressions are also summarized.
@article{arxiv.cond-mat/0502182,
title = {Novel analog switching circuit for van der Pauw measurements},
author = {T. David and I. Molchadsky and A. Somechi and R. Rosenbaum},
journal= {arXiv preprint arXiv:cond-mat/0502182},
year = {2007}
}