Semiconductor inertia

All major characteristics of chemisorption response of electrophysical parameters of semiconductor adsorbents such as sensitivity, selectivity, inertia, reversibility are naturally dependent both on the nature of adsorbent and on chemical activity of absorbate with respect to adsorbent chosen. 

Any entity that moves displays the property of inertia, i.e., resistance to a change in its state of rest or uniform motion. That is, the entity has a mass. If the entity is not material (a hole is a region where in fact there is no material), one refers to an apparent mass. Holes in semiconductors have apparent masses like holes in liquids. The inertia of the hole arises as a result of the displacement of the liquid around the hole as it moves, which gives rise to dissipation of energy (Appendix 5.1). 

Several elementary aspects of mass diffusion, heat transfer and fluid flow are considered in the context of the separation and control of mixtures of liquid metals and semiconductors by crystallization and float-zone refining. First, the effect of convection on mass transfer in several configurations is considered from the viewpoint of film theory. Then a nonlinear, simplified, model of a low Prandtl number floating zone in microgravity is discussed. It is shown that the nonlinear inertia terms of the momentum equations play an important role in determining surface deflection in thermocapillary flow, and that the deflection is small in the case considered, but it is intimately related to the pressure distribution which may exist in the zone. However, thermocapillary flows may be vigorous and can affect temperature and solute distributions profoundly in zone refining, and thus they affect the quality of the crystals produced. 

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