General Electric Company

Amy Linsebigler Smentkowski

Lembit Salasoo

Colin Richard Wilson

William Guy Morris

Tao Deng

Eric Lifshin

Subhasish Roychoudhury

Disclosed herein is a method for making a nanoparticle film comprising dispersing nanoparticles in a first liquid; adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; and contacting a substrate with the solution to deposit the nanoparticle film onto the contacted portion of the substrate. Disclosed herein too is a method for detecting an analyte comprising dispersing nanoparticles in a first liquid; adding a second liquid to the first liquid to form a nanoparticle film on top of a solution comprising the first liquid, the second liquid and the nanoparticles, wherein the second liquid has a dielectric constant that is different from a dielectric constant of the first liquid; contacting a substrate with the solution to deposit the nanoparticle film onto the substrate; disposing upon the nanoparticle film an analyte; and performing surface enhanced Raman spectroscopy to determine the identity of the analyte.

Method for forming nanoparticle films and application thereof

A method and apparatus for generating x-ray beams are described. In one embodiment, the method includes operating a cathode to operating a cathode to generate an electron beam, directing the electron beam from the cathode through a selectable shaped aperture in an accelerating electrode, and impinging the electron beam at a low angle on an anode surface to form a focal spot on the anode surface.

Method and apparatus for generating x-ray beams

An X-ray tube assembly includes an anode, a cathode, and an X-ray transparent window. The anode includes an X-ray-producing target having a surface. The cathode has an electron-beam axis which intersects the target surface at a focal point and which is oriented at a first angle, with respect to the target surface, wherein the first angle is generally twenty degrees. The window includes a surface having a center point. A line between the focal and center points makes a second angle, with respect to the target surface, wherein the second angle is generally seven degrees. A method for producing X-rays employs these angles.

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Clifton Park, NY, United States of America

Amy Linsebigler Smentkowski