of the performance for various ratchet geometries

suggests optimum working conditions for a Knudsen pump based on this mechanism...

We present a detailed description of the characteristics of a ratchet-type small-scale gas-pump suggested by Donkov et al. [1]. The pump consists of a ratchet channel with the temperature gradient applied between the opposing walls, see Fig. 1-a...

The current work revisits the radiometric channel pumps [1-2] bounded by various configurations investigating their capacity in gas species separation. Direct simulation Monte Carlo (DSMC) method is successfully employed to analyze the separation...