公开(公告)号：US20150285953A1

公开(公告)日：2015-10-08

申请号：US14434697

申请日：2013-10-09

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Gururaj Viveka Naik ,  Bivas Saha ,  Timothy D. Sands ,  Vladimir Shalaev ,  Alexandra Boltasseva

IPC: G02B1/00 ,  G02B5/00 ,  H01L51/52

CPC classification number: G02B1/002 ,  B32B9/00 ,  B82Y20/00 ,  G02B5/008 ,  H01L51/5262 ,  Y10S977/761 ,  Y10T428/24975

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.

Abstract translation: 公开了一种氮化钛基超材料及其制造方法，其由在衬底上生长以形成超晶格的等离子体氮化钛（TiN）材料和电介质材料的超薄，平滑和交替层组成。 介电材料由A1-xScxN制成，其中'x'的范围为0.2至0.4。 交替材料层具有尖锐的界面，每个层的厚度可以为1-20纳米。 基于钛TiN的超材料，一种新颖的等离子体结构单元，具有许多应用，包括但不限于发射增强剂，计算机安全性等。在金刚石和发光二极管（LED）中使用氮空位中心的效率提高是 特别感兴趣。

公开(公告)号：US20240355602A1

公开(公告)日：2024-10-24

申请号：US18644360

申请日：2024-04-24

Applicant: Purdue Research Foundation

Inventor： Demid V. Sychev ,  Vladimir M. Shalaev ,  Alexandra Boltasseva ,  Peigang Chen ,  Morris Menghuan Yang ,  Colton B. Fruhling ,  Alexei Lagutchev ,  Alexander V. Kildishev

IPC: H01J43/04

CPC classification number: H01J43/04

Abstract: An ultrafast system for detecting incidence of a single photon is disclosed which includes a single photon avalanche detector having an inherent bandgap, a source of probe light configured to apply an incident beam onto the single photon avalanche detector, wherein the probe light is configured to apply energy less than the bandgap, and a probe beam detector, configured to receive a reflected probe beam from the single photon avalanche detector, wherein the probe beam detector is adapted to generate a signal signifying: i) incidence of a single photon from a control beam onto the single photon avalanche detector.

公开(公告)号：US20220350057A1

公开(公告)日：2022-11-03

申请号：US17859665

申请日：2022-07-07

Applicant: Purdue Research Foundation

Inventor： Urcan Guler ,  Alberto Naldoni ,  Alexander V. Kildishev ,  Alexandra Boltasseva ,  Vladimir M. Shalaev

IPC: G02B5/00 ,  C09C1/36 ,  H01L51/52 ,  B01J35/00 ,  B01J27/24

Abstract: A nanostructured material system for efficient collection of photo-excited carriers is provided. They system comprises a plurality of plasmonic metal nitride core material elements coupled to a plurality of semiconductor material elements. The plasmonic nanostructured elements form ohmic junctions at the surface of the semiconductor material or at close proximity with the semiconductor material elements. A nanostructured material system for efficient collection of photo-excited carriers is also provided, comprising a plurality of plasmonic transparent conducting oxide core material elements coupled to a plurality of semiconductor material elements. The field enhancement, local temperature increase and energized hot carriers produced by nanostructures of these plasmonic material systems play enabling roles in various chemical processes. They induce, enhance, or mediate catalytic activities in the neighborhood when excited near the resonance frequencies.

公开(公告)号：US11319640B2

公开(公告)日：2022-05-03

申请号：US16865365

申请日：2020-05-03

Applicant: Purdue Research Foundation ,  Palacky University ,  University of Erlangen-Nuremberg

Inventor： Vladimir M. Shalaev ,  Zhaxylyk Kudyshev ,  Alexandra Boltasseva ,  Alberto Naldoni ,  Alexander Kildishev ,  Luca Mascaretti ,  Ŝtêphán Kment ,  Radek Zbo{circumflex over (r)}il ,  Jeong Eun Yoo ,  Patrik Schmuki

IPC: C25D11/26 ,  C01B21/076

Abstract: Titanium nitride (TiN) nanofurnaces are fabricated in a method that involves anodization of a titanium (Ti) foil to form TiO2 nanocavities. After anodization, the TiO2 nanocavities are converted to TiN at 600° C. under ammonia flow. The resulting structure is an array of refractory (high-temperature stable) subwavelength TiN cylindrical cavities that operate as plasmonic nanofurnaces capable of reaching temperatures above 600° C. under moderate concentrated solar irradiation. The nanofurnaces show near-unity solar absorption in the visible and near infrared spectral ranges and a maximum thermoplasmonic solar-to-heat conversion efficiency of 68 percent.

公开(公告)号：US20200347508A1

公开(公告)日：2020-11-05

申请号：US16865365

申请日：2020-05-03

Applicant: Purdue Research Foundation ,  Palacky University ,  University of Erlangen-Nuremberg

Inventor： Vladimir M. Shalaev ,  Zhaxylyk Kudyshev ,  Alexandra Boltasseva ,  Alberto Naldoni ,  Alexander Kildishev ,  Luca Mascaretti ,  Stephán Kment ,  Radek Zboril ,  Jeong Eun Yoo ,  Patrik Schmuki

IPC: C25D11/26 ,  H02S40/22 ,  C01B21/076 ,  H01L31/077

Abstract: Titanium nitride (TiN) nanofurnaces are fabricated in a method that involves anodization of a titanium (Ti) foil to form TiO2 nanocavities. After anodization, the TiO2 nanocavities are converted to TiN at 600° C. under ammonia flow. The resulting structure is an array of refractory (high-temperature stable) subwavelength TiN cylindrical cavities that operate as plasmonic nanofurnaces capable of reaching temperatures above 600° C. under moderate concentrated solar irradiation. The nanofurnaces show near-unity solar absorption in the visible and near infrared spectral ranges and a maximum thermoplasmonic solar-to-heat conversion efficiency of 68 percent.

公开(公告)号：US10436780B2

公开(公告)日：2019-10-08

申请号：US15174990

申请日：2016-06-06

Applicant: Purdue Research Foundation

Inventor： Justus C. Ndukaife ,  Alexander V. Kildishev ,  Agbai (George) A. Nnanna ,  Alexandra Boltasseva ,  Vladimir M. Shalaev ,  Steven Truitt Wereley

IPC: G01N33/543 ,  G02B5/00 ,  G01N1/40 ,  G01N21/65 ,  G01N15/10 ,  B01L3/00 ,  G01N15/00 ,  B03C5/00

Abstract: A particle sensing system which includes a plurality of micro-lenses which focus light from an unfocused or loosely focused light source onto a corresponding plurality of focus regions on a surface containing plasmonic structures. The absorption of light by the plasmonic structures in the focus regions results in heat dissipation in the plasmonic structures and consequently increases surface temperature in the focus regions. When an electrical field is applied to a sample fluid in contact with the surface, multiple electrothermal flows are induced in the fluid which rapidly transport suspended particles to the focus regions on the surface. The particles can then be captured and/or sensed.

公开(公告)号：US20180003865A1

公开(公告)日：2018-01-04

申请号：US15639923

申请日：2017-06-30

Applicant: Purdue Research Foundation

Inventor： Urcan Guler ,  Alberto Naldoni ,  Alexander Kildishev ,  Alexandra Boltasseva ,  Vladimir M. Shalaev

IPC: G02B5/00 ,  C09C1/36 ,  B01J35/00 ,  H01L51/52 ,  B01J27/24 ,  E06B9/24 ,  B82Y20/00 ,  B01J23/00

CPC classification number: G02B5/008 ,  B01J23/00 ,  B01J23/40 ,  B01J23/72 ,  B01J27/24 ,  B01J35/0013 ,  B01J35/004 ,  B82Y20/00 ,  C09C1/3607 ,  E06B2009/2464 ,  G02F2203/10 ,  H01L51/5268

Abstract: A nanostructured material system for efficient collection of photo-excited carriers is provided. They system comprises a plurality of plasmonic metal nitride core material elements coupled to a plurality of semiconductor material elements. The plasmonic nanostructured elements form ohmic junctions at the surface of the semiconductor material or at close proximity with the semiconductor material elements. A nanostructured material system for efficient collection of photo-excited carriers is also provided, comprising a plurality of plasmonic transparent conducting oxide core material elements coupled to a plurality of semiconductor material elements. The field enhancement, local temperature increase and energized hot carriers produced by nanostructures of these plasmonic material systems play enabling roles in various chemical processes. They induce, enhance, or mediate catalytic activities in the neighborhood when excited near the resonance frequencies.

公开(公告)号：US20170284935A1

公开(公告)日：2017-10-05

申请号：US15476868

申请日：2017-03-31

Applicant: Purdue Research Foundation

Inventor： Justus C Ndukaife ,  Alexandra Boltasseva ,  Agbai Nnanna

IPC: G01N21/552 ,  G01J3/44 ,  G01N21/65

CPC classification number: G01N15/00 ,  B01L3/502761 ,  B82Y20/00 ,  B82Y30/00 ,  G01N2015/0038 ,  G01N2015/0053 ,  G02B5/008 ,  G21K1/006

Abstract: An apparatus for trapping and sensing nanoparticles using plasmonic nanopores, comprising a conductive transparent layer, a conductive film layer mounted to a substrate, the film layer comprising a plurality of nanopores for trapping nanoparticles contained in a fluid situated between the conductive transparent layer and the conductive film layer, and an electric field source connected between the transparent layer and the film layer.

公开(公告)号：US20150380120A1

公开(公告)日：2015-12-31

申请号：US14732673

申请日：2015-06-06

Applicant: Purdue Research Foundation

Inventor： Steven Wereley ,  Agbai A. Nnanna ,  Alexandra Boltasseva ,  Justus C. Ndukaife

IPC: G21K1/00 ,  G02B5/00

CPC classification number: G21K1/006 ,  G02B5/008 ,  G02B21/32

Abstract: The present disclosure relates generally to plasmonic substrates and specifically to high-throughput trapping of particles on a plasmonic substrate.

Abstract translation: 本公开一般涉及等离子体激元基质，特别涉及等离子体激元基质上的高通量捕获颗粒。

公开(公告)号：US20150040978A1

公开(公告)日：2015-02-12

申请号：US14454709

申请日：2014-08-07

Applicant: Purdue Research Foundation

Inventor： Vladimir M. Shalaev ,  Alexandra Boltasseva ,  Mark Brongersma ,  Alexander V. Kildishev ,  Nathaniel Kinsey

IPC: H01L31/052

CPC classification number: H01L31/0543 ,  H01L31/022433 ,  H01L31/0392 ,  Y02E10/52

Abstract: A solar-energy module is disclosed. The module includes a first electrode configured to receive incident visible light with a different refractive index than the medium through which light travels prior to becoming incident on the first electrode, the first electrode having a first metasurface arrangement formed through the first electrode, and configured to selectively i) match the optical impedances of the first electrode and the medium, and ii) cause light to be refracted substantially away from normal refraction angle, a photon-absorbing material coupled to the first electrode on a first surface of the photon-absorbing material and configured to receive refracted light through the first electrode and adapted to produce an electrical current in response to the refracted light, length of the photon absorbing material substantially larger than thickness of the photon-absorbing material, and a second electrode coupled to the photon-absorbing material on a second surface of the photon-absorbing material.

Abstract translation: 公开了一种太阳能模块。 所述模块包括第一电极，其被配置为接收入射可见光，所述入射可见光的折射率不同于在入射到所述第一电极之前光行进的介质，所述第一电极具有通过所述第一电极形成的第一分表面布置，并且被配置为 选择性地i）匹配第一电极和介质的光阻抗，以及ii）使光线远离常规折射角折射，耦合到光子吸收材料的第一表面上的第一电极的光子吸收材料 并且被配置为接收穿过所述第一电极的折射光并且响应于所述折射光产生电流，所述光子吸收材料的长度实质上大于所述光子吸收材料的厚度，以及耦合到所述光子吸收材料的第二电极， 在光子吸收材料的第二表面上吸收材料。