摘要:
A device for Surface Enhanced Raman Scattering (SERS). The device includes a plurality of nanostructures protruding from a surface of a substrate, a SERS active metal disposed on a portion of said plurality of nanostructures, and a low friction film disposed over the plurality of nanostructures and the SERS active metal. The low friction film is to prevent adhesion between the plurality of nanostructures.
摘要:
Apparatus, methods, and hollow metal waveguides to perform surface-enhanced Raman spectroscopy are disclosed. An example apparatus includes a hollow metal waveguide to direct Raman photons from an intermediate location within a volume of the hollow metal waveguide toward a distal end of the hollow metal waveguide, and a mirror to direct incident light from a light source to the intermediate location within the volume of the hollow metal waveguide and to direct at least some of the Raman photons toward the distal end.
摘要:
A memory device (100) includes a semiconductor wire including a source region (132), a drain region (134), and a channel region (130) between the source region (132) and the drain region (134). A gate structure that overlies the channel region includes a memristive portion (120) and a conductive portion (110) overlying the memristive portion (120).
摘要:
A probe for use in a sensing application includes an elongate body having a first end and a free end, wherein the first end is to be attached to a support. The probe also includes a plurality of nano-fingers having respective bases and tips, wherein each of the plurality of nano-fingers is attached to the free end and is composed of a flexible material, and wherein the plurality of nano-fingers are collapsed toward each other such that the tips of the plurality of nano-fingers are substantially in contact with each other.
摘要:
An apparatus includes a substrate and a plurality of nano-fingers attached at respective first ends to the substrate and freely movable along their lengths, in which a first set of the plurality of nano-fingers comprises a first physical characteristic, wherein a second set of the plurality of nano-fingers comprises a second physical characteristic, and wherein the first physical characteristic differs from the second physical characteristic.
摘要:
A self-collecting substrate (10) for surface enhanced Raman spectroscopy having a first surface (10a) and a second surface (10b) opposed thereto, comprising: a waveguiding layer (10′) supported on a support layer (10″), with the waveguiding layer associated with the first surface and the support layer associated with the second surface; and a plurality of metal nano-antennae (14) established on the first surface and operatively associated with the plurality of openings such that exposure of analyte (18) to the light causes preferential aggregation of the analystes in the vicinity of the nano-antennae. A system (50) for at least one of attracting the analytes 18) to the metal nano-antennae (14) and performing surface enhanced Raman spectroscopy using the substrate (10) and a method for increasing a signal for surface enhanced Raman spectroscopy are provided.
摘要:
An apparatus for detecting at least one species using Raman light detection includes at least one laser source for illuminating a sample containing the at least one species. The apparatus also includes a modulating element for modulating a spatial relationship between the sample and the light beams to cause relative positions of the sample and the light beams to be oscillated, in which Raman light at differing intensity levels are configured to be emitted from the at least one species based upon the different wavelengths of the light beams illuminating the sample. The apparatus also includes a Raman light detector and a post-signal processing unit configured to detect the at least one species.
摘要:
A tunable apparatus for performing Surface Enhanced Raman Spectroscopy (SERS) includes a deformable layer and a plurality of SERS-active nanoparticles disposed at one or more locations on the deformable layer, wherein the one or more locations are configured to be illuminated with light of a pump wavelength to cause Raman excitation light to interact with the nanoparticles and produce enhanced Raman scattered light from molecules located in close proximity to the nanoparticles. In addition, a morphology of the deformable layer is configured to be controllably varied to modify an intensity of the Raman scattered light produced from the molecules.
摘要:
A method of positioning a catalyst nanoparticle that facilitates nanowire growth for nanowire-based device fabrication employs a structure having a vertical sidewall formed on a substrate. The methods include forming the structure, forming a targeted region in a surface of either the structure or the substrate, and forming a catalyst nanoparticle in the targeted region using one of a variety of techniques. The techniques control the position of the catalyst nanoparticle for subsequent nanowire growth. A resonant sensor system includes a nanowire-based resonant sensor and means for accessing the nanowire. The sensor includes an electrode and a nanowire resonator. The electrode is electrically isolated from the substrate. One or more of the substrate is electrically conductive, the nanowire resonator is electrically conductive, and the sensor further comprises another electrode. The nanowire resonator responds to an environmental change by displaying a change in oscillatory behavior.
摘要:
A semiconductor assembly is described in which a support element is constructed on a surface of a semiconductor lamina. Following formation of the thin lamina, which may have a thickness about 50 microns or less, the support element is formed, for example by plating, or by application of a precursor and curing in situ, resulting in a support element which may be, for example, metal, ceramic, polymer, etc. This is in contrast to a rigid or semi-rigid pre-formed support element which is affixed to the lamina following its formation, or to a donor wafer from which the lamina is subsequently cleaved. Fabricating the support element in situ may avoid the use of adhesives to attach the lamina to a permanent support element; such adhesives may be unable to tolerate processing temperatures and conditions required to complete the device. In some embodiments, this process flow allows the lamina to be annealed at high temperature, then to have an amorphous silicon layer formed on each face of the lamina following that anneal. A device may be formed which comprises the lamina, such as a photovoltaic cell.