Abstract:
Raman-enhancing structures include a layer of dielectric material, a superlens configured to focus electromagnetic radiation having a wavelength greater than about 100 nanometers to a two-dimensional focal area having linear dimensions less than about 100 nanometers on a surface of the layer of dielectric material, and at least two nanoparticles comprising a Raman-enhancing material disposed proximate the focal area. Additional Raman-enhancing structures include a layer of dielectric material, a layer of conductive material, and at least two nanoparticles comprising a Raman-enhancing material disposed on a second, opposite surface of the layer of dielectric material. The layer of conductive material has a plurality of apertures therethrough that are arranged in a two-dimensional array. Methods for conducting Raman spectroscopy are performed using such structures and systems.
Abstract:
A switching device includes at least one bottom electrode and at least one top electrode. The top electrode crosses the bottom electrode at a non-zero angle, thereby forming a junction. A metal oxide layer is established on at least one of the bottom electrode or the top electrode. A molecular layer including a monolayer of organic molecules and a source of water molecules is established in the junction. Upon introduction of a forward bias, the molecular layer facilitates a redox reaction between the electrodes, thereby reducing a tunneling gap between the electrodes.
Abstract:
A method for increasing adhesion between a substrate and a polymeric imprintable material during an imprinting procedure. The method includes chemically bonding a plurality of molecules to a surface of a substrate to form a self-assembled monolayer thereon. A monomer is copolymerized with the self-assembled monolayer to form a polymeric imprintable material that is chemically bonded to the self-assembled monolayer. Adhesion between the polymeric imprintable material and the substrate is substantially increased by the self-assembled monolayer.
Abstract:
A SERS-active structure is disclosed that includes a substrate and at least one nanowire disposed on the substrate. The at least one nanowire includes a core including a first material and a coating including a SERS-active material. A SERS system is also disclosed that includes a SERS-active structure. Also disclosed are methods for forming a SERS-active structure and methods for performing SERS with SERS-active structures.
Abstract:
Devices, systems, and methods for enhancing Raman spectroscopy and hyper-Raman are disclosed. A molecular analysis device for performing Raman spectroscopy comprises a substrate and a laser source disposed on the substrate. The laser source may be configured for emanating a laser radiation, which may irradiate an analyte disposed on a Raman enhancement structure. The Raman enhancement structure may be disposed in a waveguide. The molecular analysis device also includes a wavelength demultiplexer and radiation sensors disposed on the substrate and configured for receiving a Raman scattered radiation, which may be generated by the irradiation of the analyte and Raman enhancement structure.
Abstract:
Controlling the propagation of electromagnetic radiation is described. A photonic bandgap medium is placed in the path of the electromagnetic radiation, the photonic bandgap medium comprising a photorefractive material. Control radiation is projected onto a surface of the photonic bandgap medium. The control radiation spatially varies a refractive index of the photorefractive material to control propagation of the electromagnetic radiation through the photonic bandgap medium.
Abstract:
Devices, systems, and methods using Surface Enhanced Raman Spectroscopy (SERS) are disclosed. A device for generating Raman scattered radiation comprises a laser source and a SERS-active structure. The laser source may be configured for emanating radiation from an emanating surface or by forming a depression in the laser source, which creates a region of increased evanescent field from the laser source. SERS systems and methods include a device for generating Raman scattered radiation with a detector configured to receive the Raman scattered radiation.
Abstract:
SERS-active structures including features having nanoscale dimensions are disclosed, including methods for forming such SERS-active structures and methods for forming a plurality of such SERS-active structures. Methods for performing SERS using SERS-active structures also are disclosed.
Abstract:
Proxy data stream handling and complex object parameter handling allow object oriented programs to be run as distributed programs without any explicit networking code, and without using an interface definition language (IDL). Two proxies are generated dynamically that allow method calls written for local invocation to be invoked over a network. These dynamically-generated proxies allow calls to flow across a network as if they were local, and contain support for using data stream and complex objects as parameters.
Abstract:
An apparatus for performing a sensing application includes a reservoir to contain a solution, a dispenser to dispense the solution from the reservoir, and a substrate having a plurality of nano-fingers positioned to receive the dispensed solution, in which the plurality of nano-fingers are flexible, such that the plurality of nano-fingers are configurable with respect to each other. The apparatus also includes an illumination source to illuminate the received solution, an analyte introduced around the plurality of nano-fingers, and the plurality of nano-fingers, in which light is to be emitted from the analyte in response to being illuminated. The apparatus further includes a detector to detect the light emitted from the analyte.