a method of using metallized and nonmetallized nanoscopic silicon containing agents for physical property control , radiation absorption , and in situ formation of nanoscopic glass layers on material surfaces . because of their tailorable compatibility with polymers , metals , composites , ceramics , glasses and biological materials , nanoscopic silicon containing agents can be readily and selectively incorporated into materials at the nanometer level by direct mixing processes . properties improved include gas and liquid barrier , stain resistance , resistance to environmental degradation , radiation absorption , adhesion , printability , time dependent mechanical and thermal properties such as heat distortion , creep , compression set , shrinkage , modulus , hardness and abrasion resistance , electrical and thermal conductivity , and fire resistance . the materials are useful in a number of applications , including beverage and food packaging , space - survivable materials , microelectronic packaging , and radiation absorptive paints and coatings .