TY - JOUR
T1 - Dynamic control of defects in a two-dimensional optically assisted assembly
AU - Mu, W.
AU - Wang, G.
AU - Luan, L.
AU - Spalding, G. C.
AU - Ketterson, J. B.
PY - 2006/5/19
Y1 - 2006/5/19
N2 - In this paper we demonstrate controlled loading of a closely packed array of optical traps. We also describe the technical advantages of our method of filling the trap array (which makes use of an independent, steerable trap created by a separate objective lens), as well of our specific implementation of array generation by multi-beam interference. Microscopic polystyrene spheres are trapped and subsequently assembled into sites on a two-dimensional optical lattice, which is formed from the interference of two pairs of coherent laser beams via an optical setup that allows for simple, continuous variation of lattice parameters over a very wide range. Individual particles in the initial assembly are dynamically manipulated with the independent laser beam, which offers the freedom to generate either defect-free lattices or a lattice with designer defects. As examples we demonstrate the assembly of a defect-free square lattice and a lattice with a single vacancy.
AB - In this paper we demonstrate controlled loading of a closely packed array of optical traps. We also describe the technical advantages of our method of filling the trap array (which makes use of an independent, steerable trap created by a separate objective lens), as well of our specific implementation of array generation by multi-beam interference. Microscopic polystyrene spheres are trapped and subsequently assembled into sites on a two-dimensional optical lattice, which is formed from the interference of two pairs of coherent laser beams via an optical setup that allows for simple, continuous variation of lattice parameters over a very wide range. Individual particles in the initial assembly are dynamically manipulated with the independent laser beam, which offers the freedom to generate either defect-free lattices or a lattice with designer defects. As examples we demonstrate the assembly of a defect-free square lattice and a lattice with a single vacancy.
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U2 - 10.1088/1367-2630/8/5/070
DO - 10.1088/1367-2630/8/5/070
M3 - Review article
AN - SCOPUS:33646812934
SN - 1367-2630
VL - 8
JO - New Journal of Physics
JF - New Journal of Physics
M1 - 70
ER -