Nanostructured Explosives



Scientists Developing Powerful Nanostructured Explosives

by William B. Scott

Aviation Week & Space Technology

04/13/00 09:24:48 PM U.S. EDT

Lawrence Livermore National Laboratory scientists are using aerogels — very light, almost smoke-like substances — to develop "nanostructured energetic materials" for powerful conventional explosives. Typically, "energetics" are either high-energy density or high-power, but not both.

"We can make a high-explosive material that has twice the energy density of a nuclear weapon, but the power is significantly less," said Randy Simpson, the lab's High Explosives Program Manager. By reducing crystallinity from the 100-micron to 10-30-nanometer scale, "we produce both high energy density and high power. Aerogels have tremendous surface area, so we can make an aerogel of oxidizer, then surround it with make a complete oxidizer-fuel system."

With both in close proximity at nanometer scales, powerful explosive reactions can occur very quickly — ideal for advanced shaped charges.

"It's a very exciting technology — and you can do it in a beaker. You don't need millions of dollars worth of equipment to go into production," Simpson said.


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