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Sol Gel Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing by J. Brinker, Sol-Gel Science presents the physical and chemical principles of the sol-gel process at a level suitable for graduate students and practitioners in the field. This book defines sol-gel rather broadly as the preparation of ceramic materials by preparation of a sol, gelation of the sol, and removal of the solvent. The sol may be produced from inorganic or organic precursors (e.g., nitrates or alkoxides) and may consist of dense oxide particles of polymeric clusters. Brinker expands the definition of ceramics to include organically modified materials, often called ORMOSILs or CERAMERs. The emphasis of the author' treatment is on the science, rather than the technology, of sol-gel processing. Although a chapter on applications is included, more detailed discussion is available in proceedings of conferences and in the recent collection of articles, Sol-Gel Technology for thin films, Fibers, Preforms, Electronics, and Specialty Shapes (Noyes, Park Ridge, N.J., 1988), edited by professor Lisa Klein.
Sol-Gel Technologies For Glass Producers And Users Sol-Gel Technologies For Glass Producers And Users
Sol gel - Sol gel is a colloidal suspension of silicon dioxide that is gelled to form a solid. The resulting porous gel then is chemically purified and fired at high temperatures into high purity silica. Electrospinning - Electrospinning is a process by which fibers are drawn out from a viscous polymer/composite/sol-gel solution or melt by applying an electric field to a droplet of the solution (most often at a metallic needle tip). The electric field draws this droplet into a structure called a Taylor cone. Freeze casting - Freeze casting, or 'freeze-gelation' is a form of sol-gel processing of ceramics that enables a ceramic object to be fabricated in complex shapes, without the need for high-temperature sintering. Gel extraction - In molecular biology, gel extraction or gel isolation is a technique where viable DNA is eluted (extracted) from an agarose gel following agarose gel electrophoresis in order to isolate a specific band. To perform this feat, UV light is shone on the gel to illuminate all the ethidium bromide-stained DNA. solgel
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