Papers by Author: Zheng Qiang Li

Abstract: Here a simple and direct method based on transfer printing has beep developed, in which rigid stamps transfer metal films deposited on the relief surface of the stamps onto patterned organic substrates. Ultra-precision machining technology is combined with conventional photolithography to fabricate patterned Si stamps and organic substrates by replica molding. Experiment results indicate that patterned metal films on Silicon stamps were successfully transferred onto PDMS substrates. Fabrication of patterned metal films on organic substrates by transfer printing may suit for fabricating sub-micrometer and nanometer scale features in a single process.

Abstract: The measuring system was developed based on a reconstructed atomic force microscope (AFM) combined with the precision rotating air-bearing and assistant transform shaft. By this system the experiment was carried out according to the principle of three orthogonal orientations towards a micro sphere about 0.46 mm in diameter, and nine one-dimensional traces around the sphere were obtained. Analyses on roundness and sphericity are carried out from the measured data.The results show that the maximal roundness is 0.3895 μm, and the sphericity error is 0.3880 μm.These evaluations are significant references to evaluate its fabrication accuracy or to reform its machining processes.

Abstract: Based on the integration research, one multi-dimension integrated mode of CAPP and PDM was proposed including the integration of knowledge store dimension, knowledge transfer dimension and knowledge application dimension. In the integration of knowledge application dimension, an innovated integration method named key control function module was proposed. In knowledge transfer dimension integration, a recursive model of task and workflow between CAPP and PDM was made. In knowledge store dimension integration, the federal database and the virtual federal database was described.