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Jang, Ji-Hyun
Nano Crystal Lab (NCL)
Research Interests
  • Graphene, photoelectrochemical (PEC) H2 generation, ORR/OER, SERS,3D-Nanostructures, supercapacitors, thermoelectric materials

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Shape control of multivalent 3D colloidal particles via interference lithography

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Title
Shape control of multivalent 3D colloidal particles via interference lithography
Author
Jang, Ji-HyunUllal, Chaitanya K.Kooi, Steven E.Koh, CheongYangThomas, Edwin L.
Keywords
Colloidal particles; Control geometrical elements; Control multivalent particle shapes; Interference lithography
Issue Date
2007-03
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.7, no.3, pp.647 - 651
Abstract
We present a new route for the fabrication of highly nonspherical complex multivalent submicron particles. This technique exploits the ability of holographic interference lithography to control geometrical elements such as symmetry and volume fraction in 3D lattices on the submicron scale. Colloidal particles with prescribed complex concave shapes are obtained by cleaving low volume fraction connected structures fabricated by interference lithography. Controlling which Wyckoff sites in the space group of the parent structure are connected assures specific "valencies" of the particles. Two types of particles, 2D "4-valent" and 3D "6-valent" particles are fabricated via this technique. In addition to being able to control multivalent particle shape, this technique has the potential to provide tight control over size, yield, and dispersity.
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DOI
10.1021/nl0626277
ISSN
1530-6984
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ECHE_Journal Papers
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