Abstract:
Computer-implemented systems and methods are provided for reducing a number of options presented to a user where the options have characteristics that are arranged in a multi-dimensional hierarchical space. A system and method can be configured to identify common dimensions using dimension nodes in dimensional points and identify compatible nodes for each dimension in the multi-dimensional hierarchical space by determining whether an association exists. Compatible pairs of surviving points are generated after applying each of the compatible nodes from the common dimensions. Greatest lower bounds (GLBs) are computed for each of the generated compatible points, and a set of options is generated comprising points from the generated compatible points and the computed GLBs.
Abstract:
An optical sensor, sensing system and method of sensing employ a half-core hollow optical waveguide adjacent to a surface of an optical waveguide layer of a substrate. The half-core hollow optical waveguide and the adjacent optical waveguide layer cooperatively provide both an optical path that confines and guides an optical signal and an internal hollow channel. The optical path and channel extend longitudinally along a hollow core of the half-core hollow optical waveguide. The system further includes an optical source at an input of the optical path and an optical detector at an output of the optical path. A spectroscopic interaction between an analyte material that is introduced into the channel and an optical signal propagating along the optical path determines a characteristic of the analyte material.
Abstract:
Certain embodiments of the present invention are directed to a method of fabricating a mixed-scale electronic interface. A substrate is provided with a first set of conductive elements. A first layer of nanowires may be formed over the first set of conductive elements. A number of channels may be formed, with each of the channels extending diagonally through a number of the nanowires of the first layer. A number of pads may be formed, each of which is electrically interconnected with an underlying conductive element of the first set of conductive elements and one or more adjacent nanowires of the first layer of nanowires. The pads and corresponding electrically interconnected nanowires define a number of pad-interconnected-nanowire-units. Additional embodiments are directed to a method of forming a nanoimprinting mold and a method of selectively programming nanowire-to-conductive element electrical connections.
Abstract:
Various embodiments of the present invention relate to plasmonic electric-field concentrators and to systems incorporating the plasmonic electric-field concentrators to perform Raman spectroscopy. In one aspect, a plasmonic electric-field concentrator comprises two or more large features, and a relatively small feature similar in shape to large features positioned adjacent to the two or more large features. The features are arranged so that when light of an appropriate wavelength is incident on the features, surface plasmon polaritons form on the outer surfaces of the features. The surface plasmon polaritons have associated electric fields extending perpendicular to the surfaces of the features. The electric fields are concentrated in the space between features forming an electric field hot spot that enhances Raman scattered light emitted from an analyte proximate to or absorbed on the features.
Abstract:
A plasmonic conveyor, system and method of plasmonic conveyance employ a surface plasmon that is controllably moved on a surface of a plasmonic element. The conveyor includes a first plasmonic element and a second plasmonic element that individually supports a respective surface plasmon. The conveyor further includes a controller that provides controlled movement of a location of the respective surface plasmon on a surface of the plasmonic element. The controlled movement facilitates translocation of an analyte particle around a periphery of the respective plasmonic element using a high field region of the respective surface plasmon. The system includes the conveyor and an excitation signal source that provides an excitation signal having one or both of a polarization and a frequency that are controllably variable. The method includes exciting a surface plasmon with the excitation signal and moving a location of the excited surface plasmon.
Abstract:
Raman systems include a radiation source, a radiation detector configured to detect Raman scattered radiation, and a Raman signal-enhancing structure. The Raman signal-enhancing structure includes a first layer of Raman signal-enhancing material, a substantially monomolecular layer of molecules disposed on at least a portion of the first layer of Raman signal-enhancing material, and a second layer of Raman signal-enhancing material disposed on at least a portion of the substantially monomolecular layer of molecules. The second layer of Raman signal-enhancing material is disposed on a side of the layer of molecules opposite the first layer of Raman signal-enhancing material. Methods of performing Raman spectroscopy include providing such a Raman signal-enhancing structure, providing an analyte on the Raman signal-enhancing structure, irradiating the analyte and the structure, and detecting Raman scattered radiation.
Abstract:
Embodiments of the present invention provide a method of forming an electrical connection on a device. In one embodiment, the electrical connection is attached to the device via an adhesive having electrically conductive particles disposed therein. In one embodiment, the adhesive is cured while applying pressure such that the conductive particles align, have a reduced particle-to-particle spacing, or come into contact with each other to provide a more directly conductive (less resistive) path between the electrical connection and the device. In one embodiment of the present invention, a method for forming an electrical lead on a partially formed solar cell during formation of the solar cell device is provided. The method comprises placing a side-buss wire onto a pattern of electrically conductive adhesive disposed on a back contact layer of a solar cell device substrate, laminating the side-buss wire and electrically conductive adhesive between the solar cell device substrate and a back glass substrate to form a composite solar cell structure, and curing the electrically conductive adhesive while applying pressure and heat to the composite solar cell structure
Abstract:
The invention provides an adjustable showerhead that provides a variety of distinct discharge water patterns. The showerhead features a ceramic disk assembly that provide long-life and reliable operation to the showerhead. The showerhead includes a wand having a receiver with a discharge outlet and a depending lug. The disk assembly includes an upper ceramic disk fixedly positioned within the receiver, and has a curvilinear groove and a water inlet hole that receives water from the wand's discharge outlet. A lower ceramic disk is movably positioned within the receiver against the upper disk, and has a plurality of outlet holes arrayed along the periphery. A bushing resides within a central opening of the lower disk and operably connects the lower disk to the receiver. An outlet assembly is operably connected to the lower disk, and includes an inner faceplate with a plurality of discharge outlets, and an outer faceplate with a plurality of discharge outlets. An adjusting ring is operably connected to the lower disk. An operator rotates the adjusting ring to move the showerhead between various disk positions to attain the desired water discharge pattern.
Abstract:
A method for selectively altering a predetermined portion of an object or an external member in contact with the predetermined portion of the object is disclosed. The method includes selectively electrically addressing the predetermined portion, thereby locally resistive heating the predetermined portion, and exposing the object, including the predetermined portion, to the external member.
Abstract:
A Raman signal-enhancing structure includes a substrate and a plurality of protrusions located at predetermined positions relative to a surface of the substrate. Each protrusion includes a Raman signal-enhancing material and has cross-sectional dimensions of less than about 50 nanometers. The structure also includes an edge that includes an intersection between two nonparallel surfaces of at least one protrusion. A Raman spectroscopy system includes such a Raman signal-enhancing structure, and Raman spectroscopy may be performed on an analyte using such structures and systems. A method for forming such a Raman signal-enhancing structure includes nanoimprint lithography.