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arXiv · 0904.1664

1/t pressure and fermion behaviour of water in two dimensions

Taekyun Ha·Sukmin Chung·M. Y. Choi
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Abstract

A variety of metal vacuum systems display the celebrated 1/t pressure, namely power-law dependence on time t, with the exponent close to unity, the origin of which has been a long-standing controversy. Here we propose a chemisorption model for water adsorbates, based on the argument for fermion behaviour of water vapour adsorbed on a stainless-steel surface, and obtain analytically the power-law behaviour of pressure, with an exponent of unity. Further, the model predicts that the pressure should depend on the temperature T according to T^(3/2), which is indeed confirmed by our experiment. Our results should help elucidate the unique characteristics of the adsorbed water.

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Taekyun Ha, Sukmin Chung, M. Y. Choi. 2009-04-10. 1/t pressure and fermion behaviour of water in two dimensions. https://doi.org/10.1088/0953-8984%2F21%2F20%2F202101

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