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Open Access Nano Review

Strategies for Controlled Placement of Nanoscale Building Blocks

SeongJin Koh

Author Affiliations

Department of Materials Science and Engineering, The University of Texas at Arlington, Arlington, TX, 76019, USA

Nanoscale Research Letters 2007, 2:519-545  doi:10.1007/s11671-007-9091-3

Published: 9 October 2007


The capability of placing individual nanoscale building blocks on exact substrate locations in a controlled manner is one of the key requirements to realize future electronic, optical, and magnetic devices and sensors that are composed of such blocks. This article reviews some important advances in the strategies for controlled placement of nanoscale building blocks. In particular, we will overview template assisted placement that utilizes physical, molecular, or electrostatic templates, DNA-programmed assembly, placement using dielectrophoresis, approaches for non-close-packed assembly of spherical particles, and recent development of focused placement schemes including electrostatic funneling, focused placement via molecular gradient patterns, electrodynamic focusing of charged aerosols, and others.

Placement; Array; Alignment; Nanoscale building blocks; Nanoparticle; Nanocrystal; Quantum dot; Nanowire; DNA; Protein; Carbon nanotube; Template; Electrostatic; SAMs; Dielectrophoresis; Capillary force; Growth