Synthesis, Dielectric and Electrical Properties of Silver-Polymer Nanocomposites

Metallic nanoparticles and its composites have emerged as valuable asset in all phases of material science and engineering including electronic, optics and electromagnetic domains. Silver nanoparticles (Ag NPs) are one of the most vital and fascinating nanomaterials among several metallic nanoparticles due to its large surface ratio and outstanding properties with diverse field of potential applications. We demonstrated various synthesis techniques of nanocomposites, silver nanoparticles and composite based on these particles have shown great importance because of the remarkable properties (high electrical and thermal conductivity, good chemical stability and catalytic properties) of silver nanoparticles. This chapter provides various synthesis techniques for preparation of silver nanoparticles and their composites with dielectric and electrical properties in a lucid manner. The detail discussions of silver-polymer nanocomposites, emphasizing on each individual synthesis routes and properties have been carried out

A Case Study on Modeling and Optimizing Photolithography Stage of Semiconductor Fabrication Process

Photolithography in the semiconductor fabrication process is the core stage that determines the quality of semiconductor chips. The fabrication process is a batch process that causes variation in the quality of chips; thus, uniformity has always been an important goal of the process. This research is a case study on optimizing the photolithography stage to improve uniformity and the target achievement of critical dimension, a quality measure of semiconductor chips. The case study finds the optimal setting of input variables in photolithography by applying multivariate normal linear modeling with operational data obtained by sampling during manufacturing. The predicted performance of the optimal setting is found to be close to the limit of improvement estimated based on the model. For practitioners, several issues that can be considered for better optimization are also provided. Copyright (c) 2010 John Wiley & Sons, Ltd.X1122sciescopu