Abstract:
A method and apparatus (10) for specific spectroscopic atomic-imaging is disclosed for spatial resolution and imaging for display not only individual atoms on a sample (5) surface, but also bonding and the specific atomic species in such bond. The apparatus (10) includes a scanning tunneling microscope (STM) that is modified to include photon biasing, preferably a tuneable laser (54), modulating electronic surface biasing for the sample (5), and temperature biasing, preferably a vibration-free refrigerated sample mounting stage (12). Computer control (100) and data processing and visual display components (102) are also included. The method includes modulating the electronic bias voltage with and without selected photon wavelengths and frequency biasing under a stabilizing (usually cold) bias temperature to detect bonding and specific atomic species in the bonds as the STM rasters the sample (5). This data is processed along with atomic spatial topography data obtained from the STM raster scan to create a real-time visual image of the atoms on the sample (5) surface.
Abstract:
The efficiency of laser welding and other laser material processing is optimized according to this invention by rotating the plane of polarization of a linearly polarized laser beam in relation to a work piece of the material being processed simultaneously and in synchronization with steering the laser beam over the work piece so as to keep the plane of polarization parallel to either the plane of incidence or the direction of travel of the beam in relation to the work piece. Also, depending to some extent on the particular processing being accomplished, such as welding or fusing, the angle of incidence of the laser beam on the work piece is kept at or near the polarizing or Brewster's angle. The combination of maintaining the plane of polarization parallel to plane of incidence while also maintaining the angle of incidence at or near the polarizing or Brewster's angle results in only minimal, if any, reflection losses during laser welding. Also, coordinating rotation of the plane of polarization with the translation or steering of a work piece under a laser cutting beam maximizes efficiency and kerf geometry, regardless of the direction of cut.
Abstract:
A compact electrostatic particulate collector for sampling contaminants has a collection chamber defined by a titanium inner surface of a wall. A potential inducer is disposed within the chamber to create a field potential between itself and the wall of the chamber. A blower is disposed to propel air to be sampled through the chamber. At least one rinse channel is disposed to wet the inner surface of the wall of the chamber substantially 100%. The rinse channel is angled to direct a rinse liquid in a spiral direction around the inner surface of the wall. Contaminants in the air being sampled are electro statically biased into the rinse liquid on the wall and rinsed out of the chamber for collection.
Abstract:
An improved method for detecting, identifying and screening single polynucleotide polymorphisms, insertion/deletion loci, and microsatellites is provided. The method includes adding a donor intercalating dye to a sample containing an amplified target nucleic acid sequence, adding a probe containing an acceptor fluorophore to the sample, hybridizing the probe to the target sequence, exciting the donor dye with a specific wavelength of light, monitoring fluorescence from the sample due to FRET energy transfer from the dye to the probe fluorophore associated with one or both of the hybridization of the probe to the target sequence and the dissociation of the probe from the target sequence, and analyzing the sample using a melt-curve analysis to identify at least one single (or multiple) known or unknown nucleotide polymorphism, insertion/deletion loci, or micro satellite therein.
Abstract:
Methods of preparing a thin crystalline silicon film for transfer and devices utilizing a transferred crystalline silicon film are disclosed. The methods include preparing a silicon growth substrate which has an interface defining substance associated with an exterior surface. The methods further include depositing an epitaxial layer of silicon on the silicon growth substrate at the surface and separating the epitaxial layer from the substrate substantially along the plane or other surface defined by the interface defining substance. The epitaxial layer may be utilized as a thin film of crystalline silicon in any type of semiconductor device which requires a crystalline silicon layer. In use, the epitaxial transfer layer may be associated with a secondary substrate.
Abstract:
Solid state, thin film, electrochemical devices (10) and methods of making the same are disclosed. An exemplary device 10 includes at least one electrode (14) and an electrolyte (16) deposited on the electrode (14). The electrolyte (16) includes at least two homogenous layers of discrete physical properties. The two homogenous layers comprise a first dense layer (15) and a second porous layer (16).
Abstract:
An indirect evaporative cooler for cooling inlet supply air from a first temperature to a second, lower temperature using a stream of liquid coolant and a stream of exhaust or purge air. The cooler includes a first flow channel for inlet supply air and a second flow channel adjacent the first for exhaust air. The first and second flow channels are defined in part by sheets of a membrane permeable to water vapor such that mass is transferred as a vapor through the membrane from the inlet supply air to a contained liquid desiccant for dehumidification and also to the exhaust air as heat is transferred from the inlet supply air to the liquid coolant. A separation wall divides the liquid desiccant and the coolant but allows heat to be transferred from the supply air to the coolant which releases water vapor to the counter or cross flowing exhaust air.
Abstract:
The present invention is directed to a coating solution for capturing and preserving biological materials. The coating solution includes at least one saccharide. The coating solution may also include at least one other constituent, such as amino acids, complex proteins, surfactants, and mixtures thereof. The present invention is also directed to providing a method for collecting and preserving biological material using a coating solution.
Abstract:
Compositions suitable for use as encapsulants are described. The inventive compositions include a high molecular weight polymeric material, a curing agent, an inorganic compound, and a coupling agent. Optional elements include adhesion promoting agents, colorants, antioxidants, and UV absorbers. The compositions have desirable diffusivity properties, making them suitable for use in devices in which a substantial blocking of moisture ingress is desired, such as photovoltaic (PV) modules.
Abstract:
A lithium metal thin-film battery composite structure is provided that includes a combination of a thin, stable, solid electrolyte layer [18] such as Upon, designed in use to be in contact with a lithium metal anode layer; and a rapid-deposit solid electrolyte layer [16] such as LiAIF 4 in contact with the thin, stable, solid electrolyte layer [18]. Batteries made up of or containing these structures are more efficient to produce than other lithium metal batteries that use only a single solid electrolyte. They are also more resistant to stress and strain than batteries made using layers of only the stable, solid electrolyte materials. Furthermore, lithium anode batteries as disclosed herein are useful as rechargeable batteries.