title: Formation of thick, large-area nanoparticle superlattices in lithographically defined geometries.
abstract: 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.
authors.affiliation: Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA.
authors.forename: Austin
authors.initials: A
authors.lastname: Akey
authors.forename: Chenguang
authors.initials: C
authors.lastname: Lu
authors.forename: Lin
authors.initials: L
authors.lastname: Yang
authors.forename: Irving P
authors.initials: IP
authors.lastname: Herman
mesh_terms: D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D010316:Particle Size