Controlled morphogenesis and shape replication are challenges for several rapidly developing fields of materials science. Indeed, although complex forms were generated by the condensation of inorg. matter in organized media, the shaping of plastic matter on the micrometer scale is still limited to simple forms that are typically obtained as inverse replicas of channel-like cavities and colloidal crystals. Here we report the fabrication of individual plastic micro-objects that follow an elaborate design and are faithful copies of nanoporous inorg. morphotypes. The direct replica method produces an unprecedented library of curved geometrical solids made of plastics, such as cones, bicones, hollow cylinders, rings, test tubes, clubs and vases. The shape retention of the original structures on the microscale and the creation of a new nanostructure produced objects with homogeneous nanopores of 7 nm and cylindrical microcavities as large as 1 .mu.m. This strategy of shape transcription from one material to another opens new perspectives in microfabrication, sepn., anchorage and storage of chem. and biol. species. Until now it has not been possible to realize such transformations.

Sozzani, P., Bracco, S., Comotti, A., Simonutti, R., Valsesia, P., Sakamoto, Y., et al. (2006). Complete shape retention in the transformation of silica to polymer micro-objects. NATURE MATERIALS, 5(7), 545-551 [10.1038/nmat1659].

Complete shape retention in the transformation of silica to polymer micro-objects

SOZZANI, PIERO ERNESTO;BRACCO, SILVIA;COMOTTI, ANGIOLINA;SIMONUTTI, ROBERTO;VALSESIA, PATRIZIA;
2006

Abstract

Controlled morphogenesis and shape replication are challenges for several rapidly developing fields of materials science. Indeed, although complex forms were generated by the condensation of inorg. matter in organized media, the shaping of plastic matter on the micrometer scale is still limited to simple forms that are typically obtained as inverse replicas of channel-like cavities and colloidal crystals. Here we report the fabrication of individual plastic micro-objects that follow an elaborate design and are faithful copies of nanoporous inorg. morphotypes. The direct replica method produces an unprecedented library of curved geometrical solids made of plastics, such as cones, bicones, hollow cylinders, rings, test tubes, clubs and vases. The shape retention of the original structures on the microscale and the creation of a new nanostructure produced objects with homogeneous nanopores of 7 nm and cylindrical microcavities as large as 1 .mu.m. This strategy of shape transcription from one material to another opens new perspectives in microfabrication, sepn., anchorage and storage of chem. and biol. species. Until now it has not been possible to realize such transformations.
Articolo in rivista - Articolo scientifico
mesoporous silica materials, confined polymerization, polymer micro-objects, shape replica, porous polymer
English
lug-2006
5
7
545
551
none
Sozzani, P., Bracco, S., Comotti, A., Simonutti, R., Valsesia, P., Sakamoto, Y., et al. (2006). Complete shape retention in the transformation of silica to polymer micro-objects. NATURE MATERIALS, 5(7), 545-551 [10.1038/nmat1659].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/3485
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