A class of microstructured particles through colloidal crystallization

被引：473

作者：

Velev, OD ^{[1
]}

Lenhoff, AM ^{[1
]}

Kaler, EW ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Mol Engn Thermodynam, Newark, DE 19716 USA

来源：

SCIENCE | 2000年 / 287卷 / 5461期

关键词：

D O I：

10.1126/science.287.5461.2240

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Microstructured particles were synthesized by growing colloidal crystals in aqueous droplets suspended on fluorinated oil. The droplets template highly ordered and smooth particle assemblies, which diffract Light and have remarkable structural stability. The method allows control of particle size and shape from spheres through ellipsoids to toroids by varying the droplet composition, Cocrystallization in colloidal mixtures yields anisotropic particles of organic and inorganic materials that can, for example, be oriented and turned over by magnetic fields. The results open the way to controllable formation of a wide variety of microstructures.

引用

页码：2240 / 2243

页数：4

共 57 条

[1] Interactions, structural ordering and phase transitions in colloidal dispersions [J].

Arora, AK ;

Tata, BVR .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1998, 78 (01) :49-97

[2] Size-dependent lens angles for small oil lenses on water [J].

Aveyard, R ;

Clint, JH ;

Nees, D ;

Paunov, V .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1999, 146 (1-3) :95-111

[3] Design and self-assembly of open, regular, 3D mesostructures [J].

Breen, TL ;

Tien, J ;

Oliver, SRJ ;

Hadzic, T ;

Whitesides, GM .

SCIENCE, 1999, 284 (5416) :948-951

[4]

Brinker CJ, 1999, ADV MATER, V11, P579, DOI 10.1002/(SICI)1521-4095(199905)11:7<579::AID-ADMA579>3.0.CO

[5]

2-R

[6] Mesoporous silica synthesized by solvent evaporation: Spun fibers and spray-dried hollow spheres [J].

Bruinsma, PJ ;

Kim, AY ;

Liu, J ;

Baskaran, S .

CHEMISTRY OF MATERIALS, 1997, 9 (11) :2507-2512

[7]

CASAGRANDE C, 1988, CR ACAD SCI II, V306, P1423

[8] JANUS BEADS - REALIZATION AND BEHAVIOR AT WATER OIL INTERFACES [J].

CASAGRANDE, C ;

FABRE, P ;

RAPHAEL, E ;

VEYSSIE, M .

EUROPHYSICS LETTERS, 1989, 9 (03) :251-255

[9] SINGLE COLLOIDAL CRYSTALS [J].

CLARK, NA ;

HURD, AJ ;

ACKERSON, BJ .

NATURE, 1979, 281 (5726) :57-60

[10] An electrophoretic ink for all-printed reflective electronic displays [J].

Comiskey, B ;

Albert, JD ;

Yoshizawa, H ;

Jacobson, J .

NATURE, 1998, 394 (6690) :253-255

← 1 2 3 4 5 6 →