Formation of thick, large-area nanoparticle superlattices in lithographically defined geometries.
Superlattices of colloidal nanocrystals hold the promise of new nanomaterials with tunable properties. The positioning and size of these structures are often poorly controlled after self-assembly from the solution phase, making studies of their properties difficult. We report the fabrication of approximately 100 layer thick, three-dimensional superlattices on a substrate with controlled lateral placement. This novel fabrication technique generates long-range order over the micrometer scale and controlled placement by employing lithographic patterning and microfluidic flow.
Akey
Austin
A
Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
Lu
Chenguang
C
Yang
Lin
L
Herman
Irving P
IP
D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size