测定异常散射因数的强度比法

本文对测定异常散射因数的强度比法做了考察,并用这种方法较好地测定了GaAs中Ga原子在其K吸收限附近的异常散射因数,对该方法在使用中遇到的问题,进行了处理和讨论。 关键词：     

Numerical study of nanoscale lubrication and friction at solid interfaces

This study investigates lubrication and related frictional phenomena on the nanoscale using numerical simulations. Two models of lubrication, a two-layer and a three-layer, are considered, and for the three-layer model, a lubricant layer is introduced between the two solids. The kinetic frictional force shows resonance behaviour caused by multi-phonon excitations at the interface. It is found that these frictional effects cause a peculiar stick-slip motion of the driven plate and lubricants.     

Possible existence of faster-than-light phenomena for highly accelerated elementary particles

The possible existence of faster-than-light particles, which are forbidden by the known laws of physics, have been studied by many physicists. But the existence of such particles has not been confirmed by experiments. This paper shows that faster-than-light phenomena can be permitted for highly accelerated elementary particles if they have a very small mass compared to that of the electron.