The U.S. Dept. of Energy’s Savannah River National Laboratory recently developed a new geometric form of porous glass: hollow glass microspheres (HGMs), with unique porous walls—PWHGMs. The glass porosity of this material can be manipulated; it is in the range of hundreds to thousands of angstroms and has permitted the introduction of materials to the interior of the HGMs. The capability to control pore size of PWHGMs through heat treatment temperature and potentially composition can possibly meet various end-user needs—such as hydrogen storage, molecular sieves, drug and bioactive delivery systems, and environmental, as well as chemical and biological, indicators.
http://www.ornl.gov/info/news/pulse/pulse_v262_08.html Savannah River National Laboratory,
http://srnl.doe.gov/ SOURCE: Savannah River National Laboratory
