Gong Jinliang

Mechanism analyzation of the effects of grating parameters on polarization transmission of single-layer nanowire gratings

Using equivalent medium theory, surface plasma resonance theory and Fabry–Pérot resonance theory, transmission mechanism of single-layer nanowire polarizer is systematically analyzed. Concept of skin depth is used to explain the effect of grating material on polarization transmission. Two transmission minimum points in the curve of grating period versus transverse magnetic transmission are analyzed quantitatively. Effects of grating duty cycle, height and type on polarization transmission of single-layer nanowire polarizer are also analyzed. The requirements of designing single-layer sub-wavelength metal gratings with good polarization properties are given. The analysis of the transmission mechanism of sub-wavelength metal gratings will be helpful for the design and fabrication of the gratings with good polarization properties.

Computer-aided analysis of a 3-DoF parallel mechanismwith two translations and one rotation

A type of 3-DoF parallel mechanism with two translational DoFs and one rotational DoF around the axis parallel to the translational plane is analyzed thoroughly in this paper. The kinematic solutions and singularities of this parallel mechanism are analyzed in detail and closed-form kinematic solutions for both direct and inverse are given. Some pertaining topics are also investigated, including the condition number and the workspace analysis