Abstract: Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can be used as refractive index matching components, filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.
Type:
Application
Filed:
November 18, 2013
Publication date:
June 5, 2014
Applicant:
Nanosys, Inc.
Inventors:
Mingjun Liu, Robert S. Dubrow, William P. Freeman, Adrienne D. Kucma, J. Wallace Parce
Abstract: The present invention provides methods for hermetically sealing luminescent nanocrystals, as well as compositions and containers comprising hermetically sealed luminescent nanocrystals. By hermetically sealing the luminescent nanocrystals, enhanced lifetime and luminescence can be achieved.
Abstract: The present invention provides light-emitting diode (LED) devices comprises compositions and containers of hermetically sealed luminescent nanocrystals. The present invention also provides displays comprising the LED devices. Suitably, the LED devices are white light LED devices.
Type:
Application
Filed:
September 13, 2013
Publication date:
January 9, 2014
Applicant:
Nanosys, Inc.
Inventors:
Robert S. Dubrow, Jian Chen, Veeral D. Hardev, H. Jurgen Hofler, Ernest Lee
Abstract: Methods and apparatus for high density nanowire growth are presented. Methods of making a nanowire growth cartridge assembly are also provided, as are nanowire growth cartridge assemblies.
Abstract: Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can be used as refractive index matching components, filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided. Nanostructures having high quantum efficiency, small size, and/or a narrow size distribution are also described, as are methods of producing indium phosphide nanostructures and core-shell nanostructures with Group II-VI shells.
Type:
Grant
Filed:
October 2, 2012
Date of Patent:
December 31, 2013
Assignee:
Nanosys, Inc.
Inventors:
Mingjun Liu, Robert S. Dubrow, William P. Freeman, Adrienne D. Kucma, J. Wallace Parce
Abstract: Siloxane polymer ligands for binding to quantum dots are provided. The polymers include a multiplicity of amine or carboxy binding ligands in combination with long-alkyl chains providing improved stability for the ligated quantum dots. The ligands and coated nanostructures of the present invention are useful for close packed nanostructure compositions, which can have improved quantum confinement and/or reduced cross-talk between nano structures.
Type:
Application
Filed:
March 14, 2013
Publication date:
December 26, 2013
Applicant:
Nanosys, Inc.
Inventors:
William P. Freeman, Paul T. Furuta, Wendy Guo, Robert Dubrow, J. Wallace Parce
Abstract: The present invention provides polymeric compositions that can be used to modify charge transport across a nanocrystal surface or within a nanocrystal-containing matrix, as well as methods for making and using the novel compositions.
Type:
Grant
Filed:
July 2, 2009
Date of Patent:
October 22, 2013
Assignee:
Nanosys, Inc.
Inventors:
Jeffery A. Whiteford, Mihai A. Buretea, Linh Hong Nguyen, Erik Scher
Abstract: A dielectric material is disclosed comprising a plurality of substantially longitudinally oriented wires which are coupled together, wherein each of the wires includes a conductive core comprising a first material and one or more insulating shell layers comprising a compositionally different second material disposed about the core. In one embodiment, a dielectric layer is disclosed comprising a substrate comprising an insulating material having a plurality of nanoscale pores defined therein having a pore diameter less than about 100 nm, and a conductive material disposed within the nanoscale pores.
Type:
Grant
Filed:
June 12, 2007
Date of Patent:
October 15, 2013
Assignee:
Nanosys, Inc.
Inventors:
Robert S. Dubrow, Jeffrey Miller, David P. Stumbo
Abstract: The present invention relates to methods of generating liquidphobic surfaces, and surfaces prepared by these methods. The methods include generating sub-micron-structured surfaces and coating these surfaces with a liquidphobic coating, such as a hydrophobic coating.
Type:
Grant
Filed:
November 17, 2009
Date of Patent:
September 24, 2013
Assignee:
Nanosys, Inc.
Inventors:
Jason Hartlove, Ronald Barr, Robert S. Dubrow
Abstract: The present invention relates to treating of reflective surfaces to prevent fouling. The present invention also relates to reflective materials treated to prevent fouling, as well as methods of using such reflective materials.
Abstract: The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.
Type:
Grant
Filed:
July 17, 2012
Date of Patent:
May 14, 2013
Assignee:
Nanosys, Inc.
Inventors:
Chunming Niu, Calvin Y. H. Chow, Stephen A. Empedocles, J. Wallace Parce
Abstract: The present invention relates to treating of reflective surfaces to prevent fouling. The present invention also relates to reflective materials treated to prevent fouling, as well as methods of using such reflective materials.
Abstract: The invention relates to non-fouling hydrophobic reflective surfaces for a variety of applications which in one embodiment related to medical device applications comprises a method of performing a medical procedure using a surgical navigation system which includes the steps of placing one or more reflective spheres on a surgical instrument or apparatus, the reflective spheres comprising a hydrophobic coating on a sub-micron structured surface of the spheres, wherein the spheres substantially maintain their reflective properties after the spheres are contacted with a biological fluid; shining light on the reflective spheres; capturing reflected light from the spheres with a camera or other device; and registering and/or tracking a location and/or position of the spheres.
Abstract: The present invention discloses nanowires for use in a fuel cell comprising a metal catalyst deposited on a surface of the nanowires. A membrane electrode assembly for a fuel cell is disclosed which generally comprises a proton exchange membrane, an anode electrode, and a cathode electrode, wherein at least one or more of the anode electrode and cathode electrode comprise an interconnected network of the catalyst supported nanowires. Methods are also disclosed for preparing a membrane electrode assembly and fuel cell based upon an interconnected network of nanowires.
Type:
Grant
Filed:
May 31, 2011
Date of Patent:
January 22, 2013
Assignee:
Nanosys, Inc.
Inventors:
Chunming Niu, Calvin Y. H. Chow, Stephen A. Empedocles, J. Wallace Parce
Abstract: The present invention provides methods for hermetically sealing luminescent nanocrystals, as well as compositions and containers comprising hermetically sealed luminescent nanocrystals. By hermetically sealing the luminescent nanocrystals, enhanced lifetime and luminescence can be achieved.
Abstract: Methods, systems, and apparatuses for nanomaterial-enhanced platelet binding and hemostatic medical devices are provided. Hemostatic materials and structures are provided that induce platelet binding, including platelet binding and the coagulation of blood at a wound/opening caused by trauma, a surgical procedure, ulceration, or other cause. Example embodiments include platelet binding devices, hemostatic bandages, hemostatic plugs, and hemostatic formulations. The hemostatic materials and structures may incorporate nanostructures and/or further hemostatic elements such as polymers, silicon nanofibers, silicon dioxide nanofibers, and/or glass beads into a highly absorbent, gelling scaffold. The hemostatic materials and structures may be resorbable.
Type:
Grant
Filed:
March 9, 2010
Date of Patent:
November 27, 2012
Assignee:
Nanosys, Inc.
Inventors:
R. Hugh Daniels, Esther Li, Erica J. Rogers
Abstract: Methods, systems, and apparatuses for nanomaterial-enhanced hemostatic medical devices are provided. Hemostatic materials and structures are provided that induce coagulation of blood at a wound/opening caused by trauma, a surgical procedure, ulceration, or other cause. The hemostatic materials and structures may incorporate nanostructures and/or further hemostatic elements such as polymers and/or glass beads. The hemostatic materials and structures may be resorbable. Example embodiments include hemostatic bandages, hemostatic plugs, and hemostatic formulations.
Type:
Grant
Filed:
December 5, 2008
Date of Patent:
November 6, 2012
Assignee:
Nanosys, Inc.
Inventors:
R. Hugh Daniels, Robert S. Dubrow, Robert Enzerink, Esther Li, Vijendra Sahi, Jay L. Goldman, J. Wallace Parce
Abstract: A method and apparatus for an electronic substrate having a plurality of semiconductor devices is described. A thin film of nanowires is formed on a substrate. The thin film of nanowires is formed to have a sufficient density of nanowires to achieve an operational current level. A plurality of semiconductor regions are defined in the thin film of nanowires. Contacts are formed at the semiconductor device regions to thereby provide electrical connectivity to the plurality of semiconductor devices. Furthermore, various materials for fabricating nanowires, thin films including p-doped nanowires and n-doped nanowires, nanowire heterostructures, light emitting nanowire heterostructures, flow masks for positioning nanowires on substrates, nanowire spraying techniques for depositing nanowires, techniques for reducing or eliminating phonon scattering of electrons in nanowires, and techniques for reducing surface states in nanowires are described.
Abstract: Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes are optionally formed from the ligands. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided.
Type:
Grant
Filed:
April 29, 2010
Date of Patent:
October 9, 2012
Assignee:
Nanosys, Inc.
Inventors:
Mingjun Liu, Robert Dubrow, William P. Freeman, Adrienne Kucma, J. Wallace Parce
Abstract: This invention provides navel capacitors comprising nanofiber enhanced surface area substrates and structures comprising such capacitors, as well as methods and uses for such capacitors.