Patents by Inventor Vladimir Shalaev

Vladimir Shalaev has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210234498
    Abstract: A system including a first cylindrical structure embedded into a second cylindrical structure. The first cylindrical structure includes a combustion chamber. The first cylinder additionally includes a plurality of plasmonic materials on an outer wall of the first cylindrical structure. The second cylindrical structure includes a plurality of photovoltaic cells on an inner wall of the second cylindrical structure. A radius of the second cylindrical structure is greater than a radius of the first cylindrical structure.
    Type: Application
    Filed: May 1, 2020
    Publication date: July 29, 2021
    Applicant: Purdue Research Foundation
    Inventors: Esteban Marinero-Caceres, Arnold Toppo, Sajid Choudhury, Urcan Guler, Zhaxylyk Kudyshev, Joseph Pekny, Swati Pol, Harsha Reddy, Vladimir Shalaev
  • Patent number: 10760970
    Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: September 1, 2020
    Assignee: Purdue Research Foundation
    Inventors: Amr Mohammad E Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
  • Patent number: 10690817
    Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: June 23, 2020
    Assignee: Purdue Research Foundation
    Inventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
  • Publication number: 20200025610
    Abstract: A spectroscopic microscope device, comprising at least one array of metasurfaces, and at least one CCD array integrated with the array of metasurfaces. The metasurfaces in the array are configured to separately direct LCP an RCP components of light incident on the metasurface to separate pixels in the CCD array.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 23, 2020
    Applicant: Purdue Research Foundation
    Inventors: Rohith Chandrasekar, Amr Shaltout, Vladimir Shalaev, Alexander Chubykin, Alexei Lagoutchev
  • Publication number: 20190219447
    Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 18, 2019
    Applicant: Purdue Research Foundation
    Inventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
  • Publication number: 20190033496
    Abstract: A method of making an optical device including forming a plurality of holes with varying radii milled vertically into a film, wherein said holes form a pattern. The radius of each hole determines an effective refractive index for said hole. The effective refractive index modifies a phase and an intensity of an incoming electromagnetic radiation as the radiation propagates through said hole. The device is configured to be operating equally for each linearly polarized radiation simultaneously, wherein the each linearly polarized radiation is normally incident on the device.
    Type: Application
    Filed: August 7, 2018
    Publication date: January 31, 2019
    Applicant: Purdue Research Foundation
    Inventors: Alexander Kildishev, Satoshi Ishii, Vladimir Shalaev
  • Patent number: 10161797
    Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 25, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
  • Publication number: 20180292581
    Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 11, 2018
    Applicant: Purdue Research Foundation
    Inventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
  • Patent number: 10042091
    Abstract: A planar optical device, comprised of sets of nanometer-scale holes milled into a thin metal or ceramic film of subwavelength thickness serves to form arbitrary waveform of light. The holes form a pattern, preferrably rings, of various sizes in order to achieve a given phase front of light due to photonic effect. When designed as a lens, the device focuses incident light into a tight focal spot. In symmetric design, the focusing property of the device does not depend on the incident polarization angle. The lens can be manufactured based on high-throughput fabrication methods and easily integrated with a chip or placed at the end of an optical fiber.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: August 7, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Alexander Kildishev, Satoshi Ishii, Vladimir Shalaev
  • Patent number: 9989677
    Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: June 5, 2018
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
  • Patent number: 9784888
    Abstract: A titanium nitride-based metamaterial, and method for producing the same, is disclosed, consisting of ultrathin, smooth, and alternating layers of a plasmonic titanium nitride (TiN) material and a dielectric material, grown on a substrate to form a superlattice. The dielectric material is made of A1-xScxN, where ‘x’ ranges in value from 0.2 to 0.4. The layers of alternating material have sharp interfaces, and each layer can range from 1-20 nanometers in thickness. Metamaterials based on titanium TiN, a novel plasmonic building block, have many applications including, but not ‘limited to emission enhancers, computer security, etc. The use of nitrogen vacancy centers in diamond, and light emitting diode (LED) efficiency enhancement is of particular interest.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: October 10, 2017
    Assignee: PURDUE RESEARCH FOUNDATION
    Inventors: Gururaj Naik, Bivas Saha, Timothy Sands, Vladimir Shalaev, Alexandra Boltasseva
  • Publication number: 20170235162
    Abstract: A time-varying optical metasurface, comprising a plurality of modulated nano-antennas configured to vary dynamically over time. The metasurface may be implemented as part of an optical isolator, wherein the time-varying metasurface provides uni-directional light flow. The metasurface allows the breakage of Lorentz reciprocity in time-reversal. The metasurface may operate in a transmission mode or a reflection mode.
    Type: Application
    Filed: July 13, 2016
    Publication date: August 17, 2017
    Applicant: Purdue Research Foundation
    Inventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev
  • Publication number: 20170003169
    Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
    Type: Application
    Filed: July 5, 2016
    Publication date: January 5, 2017
    Applicant: Purdue Research Foundation
    Inventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
  • Publication number: 20150309218
    Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.
    Type: Application
    Filed: September 4, 2013
    Publication date: October 29, 2015
    Applicant: Purdue Research Foundation
    Inventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
  • Publication number: 20150285953
    Abstract: A titanium nitride-based metamaterial, and method for producing the same, is disclosed, consisting of ultrathin, smooth, and alternating layers of a plasmonic titanium nitride (TiN) material and a dielectric material, grown on a substrate to form a superlattice. The dielectric material is made of A1-xScxN, where ‘x’ ranges in value from 0.2 to 0.4. The layers of alternating material have sharp interfaces, and each layer can range from 1-20 nanometers in thickness. Metamaterials based on titanium TiN, a novel plasmonic building block, have many applications including, but not ‘limited to emission enhancers, computer security, etc. The use of nitrogen vacancy centers in diamond, and light emitting diode (LED) efficiency enhancement is of particular interest.
    Type: Application
    Filed: October 9, 2013
    Publication date: October 8, 2015
    Applicant: Purdue Research Foundation
    Inventors: Gururaj Viveka Naik, Bivas Saha, Timothy D. Sands, Vladimir Shalaev, Alexandra Boltasseva
  • Publication number: 20150247960
    Abstract: A planar optical device, comprised of sets of nanometer-scale holes milled into a thin metal or ceramic film of subwavelength thickness serves to form arbitrary waveform of light. The holes form a pattern, preferrably rings, of various sizes in order to achieve a given phase front of light due to photonic effect. When designed as a lens, the device focuses incident light into a tight focal spot. In symmetric design, the focusing property of the device does not depend on the incident polarization angle. The lens can be manufactured based on high-throughput fabrication methods and easily integrated with a chip or placed at the end of an optical fiber.
    Type: Application
    Filed: September 26, 2013
    Publication date: September 3, 2015
    Applicant: Purdue Research Foundation
    Inventors: Alexander Kildishev, Ishii Satoshi, Vladimir Shalaev
  • Patent number: 7298474
    Abstract: Instruments for molecular detection at the nano-molar to femto-molar concentration level include a longitudinal capillary column (10) of known wall thickness and diameter. The column (10) contains a medium (24) including a target molecule (30) and a plurality of optically interactive dielectric beads (26) on the order of about 10?6 meters up to about 10?3 meters and/or metal nanoparticles (31) on the order of 1-500 nm. A flow inducer (34) causes longitudinal movement of the target molecule within the column (10). A laser (14) introduces energy laterally with respect to the column (10) at a wavelength and in a direction selected to have a resonant mode within the capillary column wall (12) and couple to the medium (24). A detector (40) is positioned to detect Raman scattering occurring along the column (10) due to the presence of the target molecule.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: November 20, 2007
    Assignee: Purdue Research Foundation
    Inventors: Vladimir P. Drachev, Vladimir Shalaev, Dongmao Zhang, Dor Ben-Amotz
  • Publication number: 20050244977
    Abstract: An adaptive surface for supporting an analyte to be examined, includes a support layer, a metal island layer, and an adhesive layer by which the metal island layer is attached to the support layer, the adhesive layer and metal island layer being interactive with an analyte containing solution to permit movement of at least some of the islands on the adhesive layer into increasingly close proximity during drying of the analyte solution.
    Type: Application
    Filed: March 23, 2005
    Publication date: November 3, 2005
    Inventors: Vladimir Drachev, Mark Thoreson, Vishal Nashine, Meena Narsimhan, Eldar Khaliullin, Dor Ben-Amotz, Vladimir Shalaev, Vincent Davisson
  • Publication number: 20050221503
    Abstract: Instruments for molecular detection at the nano-molar to femto-molar concentration level include a longitudinal capillary column (10) of known wall thickness and diameter. The column (10) contains a medium (24) including a target molecule (30) and a plurality of optically interactive dielectric beads (26) on the order of about 10?6 meters up to about 10?3 meters and/or metal nanoparticles (31) on the order of 1-500 nm. A flow inducer (34) causes longitudinal movement of the target molecule within the column (10). A laser (14) introduces energy laterally with respect to the column (10) at a wavelength and in a direction selected to have a resonant mode within the capillary column wall (12) and couple to the medium (24). A detector (40) is positioned to detect Raman scattering occurring along the column (10) due to the presence of the target molecule.
    Type: Application
    Filed: April 8, 2005
    Publication date: October 6, 2005
    Inventors: Vladimir Drachev, Vladimir Shalaev, Dongmao Zhang, Dor Ben-Amotz
  • Patent number: 6796532
    Abstract: The present invention provides a system and method for rapidly and precisely controlling vortex symmetry or asymmetry on aircraft forebodies to avoid yaw departure or provide supplemental lateral control beyond that available from the vertical tail surfaces with much less power, obtrusion, weight and mechanical complexity than current techniques. This is accomplished with a plasma discharge to manipulate the boundary layer and the angular locations of its separation points in cross flow planes to control the symmetry or asymmetry of the vortex pattern. Pressure data is fed to a PID controller to calculate and drive voltage inputs to the plasma discharge elements, which provide the volumetric heating of the boundary layer on a time scale necessary to adapt to changing flight conditions and control the symmetry or asymmetry of the pressures and vortices.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: September 28, 2004
    Inventors: Norman D. Malmuth, Alexander Fedorov, Vladimir Shalaev, Vladimir Zharov, Ivan Shalaev, Anatoly Maslov, Victor Soloviev