arXiv subjects

Jun Wei Fan

Publications and source records attributed to Jun Wei Fan.

2 recordsLinked to original sources

arXiv2015

Denoise in the pseudopolar grid Fourier space using exact inverse pseudopolar Fourier transform

In this paper I show a matrix method to calculate the exact inverse pseudopolar grid Fourier transform, and use this transform to do noise removals in the k space of pseudopolar grids. I apply the Gaussian filter to this pseudopolar grid and find the advantages of the noise removals are very excellent by using pseudopolar grid, and finally I show the Cartesian grid denoise for comparisons. The results present the signal to noise ratio and the variance are much better when doing noise removals in the pseudopolar grid than the Cartesian grid. The noise removals of pseudopolar grid or Cartesian grid are both in the k space, and all these noises are added in the real space.

physics.data-an↗

arXiv2013

Transport properties of p-type metal-oxide-semiconductor inversion layer in (110) and (111) silicon channel under uniaxial stress

Valence subband and transport properties of p-type metal-oxide-semiconductor (PMOS) inversion layer in uniaxially strained (110) and (111) Si channel have been studied theoretically in this work. Equal energy lines, carrier concentration effective mass, conductivity effective mass, and mobility are calculated based on Luttinger-Kohn Hamiltonian [16]. Three compact expressions of scattering rate are derived in this paper. The direction of applied uniaxial stresses considered is in either parallel or perpendicular to channel. My results show mobility is very sensitive to effective mass under different stresses. The favorable mobility directions are found in (110) system with -3 GPa stress parallel to channel and +3 GPa stress perpendicular to channel.

cond-mat.mes-hall↗