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12 results on '"Tang, Suzhou"'

9. A NOVEL FABRICATION METHOD OF TWO-DIMENSIONAL NANO-MOLD BY COMBINING ULTRAVIOLET LITHOGRAPHY WITH WET ETCHING TECHNOLOGY.

Author

CHENG, E, TANG, SUZHOU, LIU, LINGPENG, ZOU, HELIN, and ZHANG, ZHENGYAN

Subjects
*ULTRAVIOLET lithography, *ETCHING, *PHOTORESISTS, *LITHOGRAPHY, *MICROLITHOGRAPHY, *WETTING, *NANOFABRICATION
Abstract

Nano-fluidic devices have great potential in the applications of biology, chemistry, and medicine. However, their applications have been hampered by their expensive or complicated fabrication methods. We present a new and simple approach to fabricate low-cost two-dimensional (2D) nano-mold based on ultraviolet (UV) lithography and wet etching. The influence of UV lithography parameters on the width dimension of AZ5214 photoresist was investigated. With the optimized parameters of UV lithography, the width dimension of photoresist patterns had sharply decreased from microscale to nano-scale. At the same time, the influences of etching time on the over-etching amount of SiO2 film and nano-mold depth were also analyzed for further reducing the width of nano-mold. In addition, the effect of photoresist mesas deformation on the nano-mold fabrication was also studied for improving the quality of nano-mold. By the proposed method, trapezoid cross-sectional 2D nano-mold with different dimensions can be obtained for supporting varied applications. The minimum nano-mold arrays we fabricated are the ones with the dimensions of 115 nm in top edge, 284 nm in bottom edge, and 136 nm in depth. This method provides a low-cost way to fabricate high-quality and high-throughput 2D nano-mold. [ABSTRACT FROM AUTHOR]

Published
2021
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11. Design of a multi-product Kanban system based on bottleneck analysis

Author

Wang Delun, Qian Feng, Tang Suzhou, Huang Liang, and Gao Yuan

Subjects
Engineering, Mathematical optimization, business.industry, Tardiness, Kanban, Markov process, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Product type, Bottleneck, symbols.namesake, Simulated annealing, symbols, Systems engineering, Algorithm design, Sensitivity (control systems), business
Abstract

Kanban system is a novel philosophy, which plays a significant role in many production systems. The design of a Kanban system addresses the selection of two important parameters, i.e. the number of Kanbans and the lot size. In this paper, a simulation model of a single-card Kanban system capable of handling different types of products with different demand requirements has been developed and used for the performance analysis. The number of Kanbans and lot size can be different for different product types at each work station. A bi-criteria objective function comprising weighted tardiness and weighted work-in-process has been used for evaluation. The bottleneck analysis has been first used as a sensitivity analysis of the parameters in this field, which is very useful to guide the design procedure of the Kanban system to achieve the best performance. A modified simulated annealing algorithm is also given in which the neighborhood-generation is according to a probability based on the bottleneck analysis. It can find same or better solutions with obviously fewer iterations compared to a classical simulated annealing algorithm. Several case studies in different sizes have been tried out and showed relatively positive results.

Published
2010

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