We experimentally demonstrate the technique of light-assisted, templated self-assembly (LATS). We excite a guided-resonance mode of a photonic-crystal slab with 1.55 μm laser light to create an array of optical traps. We demonstrate assembly of a square lattice of 520 nm diameter polystyrene particles spaced by 860 nm. Our results demonstrate how LATS can… (More)
We calculate optical forces on colloidal particles over a photonic crystal slab. We show numerically that exciting a guided resonance mode of the slab yields a resonantly-enhanced, attractive optical force. Optical forces in the lateral direction result in a two-dimensionally periodic pattern of stable trapping positions. Trapping patterns can be… (More)
We demonstrate for the first time the assembly of an array of gold particles using a guided-resonance mode of a photonic-crystal slab. The 200nm diameter particles form a triangular lattice with spacing of 1140 nm and exhibit high stability.
A new photonic crystal structure is generated by using a regular graphite lattice as the base and adding a slot in the center of each unit cell to enhance field confinement. The theoretical Q factor in an ideal structure is over 4 × 10(5). The structure was fabricated on a silicon-on-insulator wafer and optically characterized by transmission spectroscopy.… (More)