Sabar Hutagalung

Universiti Sains MalaysiaMalaysia

Dr. Sabar D. Hutagalung received a Drs degree (Applied Physics) from University of North Sumatra (USU), Medan, Indonesia in 1989 and a Ph.D. degree (Materials Science) from University of Technology Malaysia (UTM), Johor Bahru, Malaysia, in 1997. He was a lecturer at the USU from 1991 to 1999. From 1999 to 2003, he was with the Faculty of Engineering, Legenda College, Malaysia as a lecturer, a head of department and later he served as a dean of faculty. Since December 2003 he has been with the School of Materials and Mineral Resources Engineering, University of Science Malaysia (USM), Penang, Malaysia. His research interests are nanomaterials, nanoelectronics and electro-active ceramic materials areas, especially synthesis and characterization of semiconductor nanostructured materials (nanowires, nanorods, nanoparticles and quantum dots), development of silicon nanowire transistor by AFM lithography, investigation of high-K dielectric and giant magnetoresistance ceramic materials, and development of ceramic-based EMI shielding materials.

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Materials are important to mankind because of the benefits that can be derived from the manipulation of their properties, for example electrical conductivity, dielectric constant, magnetization, optical transmittance, strength and toughness. Materials science is a broad field and can be considered to be an interdisciplinary area. Included within it are the studies of the structure and properties of any material, the creation of new types of materials, and the manipulation of a material's properties to suit the needs of a specific application. The contributors of the chapters in this book have various areas of expertise. therefore this book is interdisciplinary and is written for readers with backgrounds in physical science. The book consists of fourteen chapters that have been divided into four sections. Section one includes five chapters on advanced materials and processing. Section two includes two chapters on bio-materials which deal with the preparation and modification of new types of bio-materials. Section three consists of three chapters on nanomaterials, specifically the study of carbon nanotubes, nano-machining, and nanoparticles. Section four includes four chapters on optical materials.

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