FORMATION OF ORDERED 2-DIMENSIONAL GOLD COLLOID LATTICES BY ELECTROPHORETIC DEPOSITION

被引:210
作者
GIERSIG, M [1 ]
MULVANEY, P [1 ]
机构
[1] HAHN MEITNER INST BERLIN GMBH,PHOTOCHEM ABT,W-1000 BERLIN 39,GERMANY
关键词
D O I
10.1021/j100126a003
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The preparation of ordered two-dimensional (2D) gold colloid lattices using an electrophoretic technique is reported. The lattices can be readily observed by electron microscope and the lattice constants determined by electron diffraction. Using image processing, it can be shown that the gold particles condense into a hexagonal lattice and also that the crystallographic axes of the individual gold particles are randomly oriented. The equilibrium distance between the particles corresponds approximately to the size of the adsorbed stabilizers. The structures are therefore stabilized by short-range steric repulsion and not by a diffuse layer electrostatic barrier, as is normally the case for latex sols. The method is of general interest as a means to prepare monolayer films of nanosized metal or semiconductor particles.
引用
收藏
页码:6334 / 6336
页数:3
相关论文
共 16 条
[11]   COLLOID STABILITY AND INSTABILITY - ORDER-DISORDER [J].
OTTEWILL, RH .
LANGMUIR, 1989, 5 (01) :4-11
[12]  
OTTEWILL RH, 1981, COLLOIDAL DISPERSION
[13]   TWO-DIMENSIONAL INTERFACIAL COLLOIDAL CRYSTALS [J].
PIERANSKI, P .
PHYSICAL REVIEW LETTERS, 1980, 45 (07) :569-572
[14]   DIGITAL IMAGE-PROCESSING - SEMPER SYSTEM [J].
SAXTON, WO ;
PITT, TJ ;
HORNER, M .
ULTRAMICROSCOPY, 1979, 4 (03) :343-353
[15]   SYNTHESIS AND ELECTRON-MICROSCOPIC INVESTIGATION OF CONTROLLED GROWN, LIGAND STABILIZED GOLD COLLOIDS AND THEORETICAL CONSIDERATIONS ON THE COVERING OF SURFACES BY COLLOIDS [J].
SCHMID, G ;
LEHNERT, A ;
KREIBIG, U ;
ADAMCZYK, Z ;
BELOUSCHEK, P .
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 1990, 45 (07) :989-994
[16]   COLLOIDAL AGGREGATION REVISITED - NEW INSIGHTS BASED ON FRACTAL STRUCTURE AND SURFACE-ENHANCED RAMAN-SCATTERING [J].
WEITZ, DA ;
LIN, MY ;
SANDROFF, CJ .
SURFACE SCIENCE, 1985, 158 (1-3) :147-164