Photo-responsive macro- and micro-liquid marbles
AssigneeAgency for Science, Technology and Research
InventorsJia Min Chin, Siok Wei Tay, Xiaobai Wang, Jianwei Xu, Andy Tzi Sum Hor
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Abstract
The invention relates to macro- and micro-liquid marbles (i.e. droplets of liquid with a particulate-based shell), and in particular, to photo-responsive macro- and micro-liquid marbles encapsulating a substance therein. Methods for forming the macro- and micro-liquid marbles, and use of the macro- and micro-liquid marbles, in controlled release applications are also disclosed.
Claims7
A method for releasing a substance from a macro- or micro-liquid marble, wherein the macro- or micro-liquid marble is formed by a plurality of nanoparticles and/or mixture of plurality of nanoparticles and said substance is encapsulated therein, the method comprising irradiating the plurality of nanoparticles at a wavelength of between about 200 nm and about 2,000 nm, wherein the plurality of nanoparticles is metal or metal oxide nanoparticles, and wherein the plurality of nanoparticles is grafted with oleophobic molecules comprising a fluorinated or a perfluorinated silane of formula RSi(OR′)3 or RSiX3, wherein
- R is a fluorinated or a perfluorinated C6-C18 alkyl;
- and
- X is a halogen.
Dependencies are inferred from the claim text.