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Written by Administrator  
Thursday, 04 March 2004
The sol-gel technique

Conventional glass preparation requires melting of the precursors at high temperatures, rapid cooling and subsequent vitrification of the glassy material. This procedure highly restricts choice of substances, which can be entrapped in the glass products. Basically only metal oxides and some inorganic salts can survive such drastic conditions... Read more

Sol-gel materials under gamma rays

Gamma rays which are generated by radioactive materials, have the smallest wavelengths of any other wave in the electroma­gne­tic spectrum. They are very penetrating and can kill living cells. Therefore, they are used in medicine to kill cancerous cells... Read more

Magnetic powders

Understanding the correlation between magnetic properties and nanostructure involves collaborative efforts between chemists, physicists, and materials scientists to study both fundamental properties and potential applications. Magnetic nanoparticles of a size of a single magnetic domain possess very interesting properties... Read more

Optical sensors

The idea behind the sol-gel optical sensors (optodes) is based on changes of optical parameters of active (sensing) molecules physically entrapped in (or covalently bound to) porous sol-gel thin films. Those changes are induced by changing external physico-chemical parameters such as temperature, hydrostatic pressure or presence of analyte molecules or, for example, bacteria. There are several kinds of optical signals...Read more

Last Updated ( Tuesday, 12 October 2004 )
 
 
   
     

 
 
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