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Microcapsule and methods of making and using microcapsules

United States Patent

8,822,618
September 2, 2014
View the Complete Patent at the US Patent & Trademark Office
Lawrence Berkeley National Laboratory - Visit the Technology Transfer and Intellectual Property Management Department Website
An embodiment of a microcapsule includes a shell surrounding a space, a liquid within the shell, and a light absorbing material within the liquid. An embodiment of a method of making microcapsules includes forming a mixture of a light absorbing material and an organic solution. An emulsion of the mixture and an aqueous solution is then formed. A polymerization agent is added to the emulsion, which causes microcapsules to be formed. Each microcapsule includes a shell surrounding a space, a liquid within the shell, and light absorbing material within the liquid. An embodiment of a method of using microcapsules includes providing phototriggerable microcapsules within a bulk material. Each of the phototriggerable microcapsules includes a shell surrounding a space, a chemically reactive material within the shell, and a light absorbing material within the shell. At least some of the phototriggerable microcapsules are exposed to light, which causes the chemically reactive material to release from the shell and to come into contact with bulk material.
Okawa; David C. (San Bruno, CA), Pastine; Stefan J. (San Francisco, CA), Zettl; Alexander K. (Kensington, CA), Frechet; Jean M. J. (Oakland, CA)
The Regents of the University of California (Oakland, CA)
13/ 393,183
20120253000
September 2, 2010
STATEMENT OF GOVERNMENT SUPPORT This invention was made with government support under Contract No. DE-AC02-05CH11231 awarded by the U.S. Department of Energy and with government support under Grant No. F32GM078780-03 awarded by the National institutes of Health. The government has certain rights in this invention.