| Columbia University Patent applications |
| Patent application number | Title | Published |
|---|
| 20120045191 | SYSTEMS AND METHODS FOR PREPARING EPITAXIALLY TEXTURED POLYCRYSTALLINE FILMS - The disclosed subject matter relates to systems and methods for preparing epitaxially textured polycrystalline films. In one or more embodiments, the method for making a textured thin film includes providing a precursor film on a substrate, the film includes crystal grains having a surface texture and a non-uniform degree of texture throughout the thickness of the film, wherein at least a portion of the this substrate is transparent to laser irradiation; and irradiating the textured precursor film through the substrate using a pulsed laser crystallization technique at least partially melt the film wherein the irradiated film crystallizes upon cooling to form crystal grains having a uniform degree of texture. | 02-23-2012 |
| 20100331441 | FUNCTIONALIZATION OF ORGANIC SURFACES - The present invention relates to functionalizing a surface of an organic material. For example, surfaces of materials having C—H bonds, such as polymers having C—H bonds, can be functionalized. In certain embodiments, a heterobifunctional molecule having a photoactive anchor, a spacer, and a terminal functional group is applied to the surface of an organic material that contains one or more C—H bonds. The heterobifunctional molecule can be bound to any surface having C—H bonds as the photoactive anchor can react with C—H bonds upon irradiation. The terminal functional group has a “click” functionality which can be utilized to functionalize the surface of the organic material with any desired functionalizing moiety having the orthogonal click functionality. | 12-30-2010 |
| 20100270481 | SYSTEMS, DEVICES AND METHODS FOR TUNING A RESONANT WAVELENGTH OF AN OPTICAL RESONATOR AND DISPERSION PROPERTIES OF A PHOTONIC CRYSTAL WAVEGUIDE - Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning resonant wavelengths of an optical resonator. Some embodiments of the disclosed subject matter provide systems, devices, and methods for tuning dispersion properties of photonic crystal waveguides. In some embodiments, methods for tuning a resonant wavelength of an optical resonator are provided, the methods including: providing an optical resonator having a surface; determining an initial resonant wavelength emitted by the optical resonator in response to an electromagnetic radiation input; determining a number of layers of dielectric material based on a difference between the initial resonant wavelength and a target resonant wavelength and a predetermined tuning characteristic; and applying the determined number of layers of dielectric material to the surface of the optical resonator to tune the initial resonant wavelength to a tuned resonant wavelength. | 10-28-2010 |
| 20100187529 | LASER-IRRADIATED THIN FILMS HAVING VARIABLE THICKNESS - A crystalline film includes a first crystalline region having a first film thickness and a first crystalline grain structure; and a second crystalline region having a second film thickness and a second crystalline grain structure. The first film thickness is greater than the second film thickness and the first and second film thicknesses are selected to provide a crystalline region having the degree and orientation of crystallization that is desired for a device component. | 07-29-2010 |
| 20100144086 | SYNTHESIS OF ACENES AND HYDROXY-ACENES - A method comprising reducing an acenequinone to form an acenepolyhydrodiol by exposing the acenequinone to a reducing environment comprising an alkoxyaluminate. | 06-10-2010 |
| 20090309104 | SYSTEMS AND METHODS FOR CREATING CRYSTALLOGRAPHIC-ORIENTATION CONTROLLED poly-SILICON FILMS - In accordance with one aspect, the present invention provides a method for providing polycrystalline films having a controlled microstructure as well as a crystallographic texture. The methods provide elongated grains or single-crystal islands of a specified crystallographic orientation. In particular, a method of processing a film on a substrate includes generating a textured film having crystal grains oriented predominantly in one preferred crystallographic orientation; and then generating a microstructure using sequential lateral solidification crystallization that provides a location-controlled growth of the grains orientated in the preferred crystallographic orientation. | 12-17-2009 |
| 20090203002 | MESENCHYMAL STEM CELLS AS A VEHICLE FOR ION CHANNEL TRANSFER IN SYNCYTIAL STRUCTURES - The present invention provides a method of selectively amplifying fetal DNA sequences from a mixed, fetal-maternal source. This method utilizes differential methylation to allow for the selective amplification of trophoblast/fetal specific sequences from DNA mixtures that contain a high proportion of non-trophoblast/fetal DNA. The invention also provides methods of using the amplified fetal DNA sequences for aneuploidy detection. | 08-13-2009 |
| 20090148979 | FABRICATING APPARATUS WITH DOPED ORGANIC SEMICONDUCTORS - A method includes forming a semiconducting region including polyaromatic molecules on a surface of a substrate. The method also includes forming over the region a substantially oxygen impermeable dielectric layer. The act of forming a semiconducting region includes exposing the molecules to oxygen while exposing the molecules to visible or ultraviolet light. | 06-11-2009 |
| 20080309754 | Systems and Methods for Displaying Three-Dimensional Images - Systems and methods for displaying three-dimensional (3D) images are described. In particular, the systems can include a display block made from a transparent material with optical elements three-dimensional disposed therein. Each optical element becomes luminous when illuminated by a light ray. The systems can also include a computing device configured to generate two-dimensional (2D) images formatted to create 3D images when projected on the display block, by a video projector coupled to the computing device. The video projector is configured to project the 2D images on the block to create the 3D images by causing a set of the passive optical elements to become luminous. Various other systems and methods are described for displaying 3D images. | 12-18-2008 |
