University of Minnesota

University of Rochester

Sang-Hyun Oh

Steven John Koester

Tony Low

Nathan Charles Lindquist

In-Ho Lee

Lukas Novotny

Russell J Holmes

Aditya Bhan

Sang Eon Han

Prashant Nagpal

David J Norris

Timothy W Johnson

Wade A Luhman

Xiaoshu Chen

Daehan Yoo

The subject matter of this specification can be embodied in, among other things, a graphene plasmon resonator that includes a planar patterned layer having a collection of electrically conductive segments, and a collection of dielectric segments, each dielectric segment defined between a corresponding pair of the electrically conductive segments, a graphene layer substantially parallel to the planar patterned layer and overlapping the collection of electrically conductive segments, and a planar dielectric layer between the planar patterned layer and the graphene layer.

Graphene plasmon resonators

A dielectrophoretic (DEP) sensor includes a graphene electrode adjacent a channel for confining a target particle in a liquid, a surface probe attached to a surface of the graphene electrode, the surface probe having a selective reaction with the target particle, and a voltage source electrically connected to the graphene electrode and configured to apply a voltage to the graphene electrode to cause DEP trapping of the target particle at the graphene electrode.

Graphene-based dielectrophoresis sensor and method

Devices, systems, and methods for applying a dielectrophoretic force on a particle include: a cell defining at least one channel for confining the particle; and a first electrode and a second electrode electrically isolated from the first electrode, at least one of the first and second electrodes being formed from a two-dimensional (2D) material providing an atomically sharp edge. The first and second electrodes are arranged sufficiently close to one another and sufficiently close to the channel such that application of a sufficient voltage across the first and second electrodes generates an electric field in at least part of the channel, the electric field having an electric field gradient sufficient to apply the dielectrophoretic force on the particle in the channel.

Electrodes formed from 2D materials for dielectrophoresis and systems and methods for utilizing the same

The subject matter of this specification can be embodied in, among other things, a photodetector that includes a semiconductor substrate, a semiconductor annulus on a planar face of the semiconductor substrate, and a metal layer on the semiconductor substrate, wherein the metal layer comprises a first region surrounding the semiconductor annulus and comprises a second region filling an interior region to the semiconductor annulus, and the metal layer in the first region forms a Schottky junction with the semiconductor ring.

Photodetectors

A method for fabricating articles for use in optics, electronics, and plasmonics includes large scale lithography or other patterning and conformal deposition such as by atomic layer deposition.

Methods for manufacturing nano-gap and angstrom-gap articles

Methods for the formation of individual, precisely shaped nano- or micro-scale metallic structures, particularly pyramids. With this technique, mass fabrication of high-quality, uniform, and ultra-sharp pyramids, cones and wedges is achieved. The high yield, reproducibility, durability and massively parallel fabrication methods of this disclosure provide structures suitable for reliable optical sensing and detection and for cementing near-field optical imaging and spectroscopy as a routine characterization.

Method of forming individual metallic microstructures

Methods for template-stripping a single metallic nano-tip structure from a template containing a plurality of ready-to-be-template-stripped inverted metallic nano-tip structures include attaching the metallic nano-tip structure to a wire handle or a cantilever. A metallic nano-tip assembly includes a single metallic nano-tip structure attached to a handle or mounted on a cantilever structure. The metallic nano-tip assembly may be conductive.

Metallic nano-tip apparatus, methods, and applications

The present invention provides templating methods for replicating patterned metal films from a template substrate such as for use in plasmonic devices and metamaterials. Advantageously, the template substrate is reusable and can provide plural copies of the structure of the template substrate. Because high-quality substrates that are inherently smooth and flat are available, patterned metal films in accordance with the present invention can advantageously provide surfaces that replicate the surface characteristics of the template substrate both in the patterned regions and in the unpatterned regions.

Replication of patterned thin-film structures for use in plasmonics and metamaterials

Plasmonic nanocavity arrays and methods for enhanced efficiency in organic photovoltaic cells are described. Plasmonic nanocavities offer a promising and highly tunable alternative to conventional transparent conductors for photovoltaic applications using both organic and inorganic materials systems.

Growing community of inventors

Plymouth, MN, United States of America

Sang-Hyun Oh