A NASA article about the work of April Tsui, including three high-resolution photographs of her work.

A gel that is 99.8 percent air has been designated the least dense solid in the world by Guinness World Records.

Properties and production methods, with particular emphasis on applications as casting molds.

Technology transfer bulletin from Lawrence Berkeley Lab offers licensing of patent for insulation material. Links to other related patents.

A brief history and a description of the chemical and physical processes used to make them. Information about surface chemistry, pore structure, optical and thermal properties. Published by the Microstructured Materials Group at Berkeley Lab.

Describes the material's use in a space probe capturing samples of comet material and interstellar dust.

Research group describes manufacturing process in detail, offers general information and a collection of photographs.