公开(公告)号：US10739261B2

公开(公告)日：2020-08-11

申请号：US16399917

申请日：2019-04-30

Applicant: Purdue Research Foundation

Inventor： Aveek Dutta ,  Vladimir M. Shalaev ,  Alexandra Boltasseva ,  Esteban E. Marinero-Caceres

IPC: G01N21/552 ,  G01N21/01 ,  G01R33/12 ,  B82Y20/00 ,  B82Y35/00

Abstract: A magneto-plasmonic nanostructure is disclosed. The structure includes a substrate, and a magneto-plasmonic stack, comprising a nano-sized plasmonic resonator, a nanomagnet, and a capping layer, wherein the nano-sized plasmonic resonator is configured to receive circularly polarized light at an intensity to thereby increase normal component of plasmon-generated opto-magnetic field, HOM,z, at least at the interface of one of i) the nano-sized plasmonic resonator and the nanomagnet, or ii) the nanomagnet and the capping layer, whereby the HOM,z direction is perpendicular to the rotational direction of the circularly polarized light and the nanomagnets in the magneto-plasmonic stack switches its magnetic moment in response to a change of the HOM,z direction in response to a change of the rotational direction of the circularly polarized light.

公开(公告)号：US20190331598A1

公开(公告)日：2019-10-31

申请号：US16399917

申请日：2019-04-30

Applicant: Purdue Research Foundation

Inventor： Aveek Dutta ,  Vladimir M. Shalaev ,  Alexandra Boltasseva ,  Esteban E. Marinero-Caceres

IPC: G01N21/552 ,  G01N21/01 ,  G01R33/12

Abstract: A magneto-plasmonic nanostructure is disclosed. The structure includes a substrate, and a magneto-plasmonic stack, comprising a nano-sized plasmonic resonator, a nanomagnet, and a capping layer, wherein the nano-sized plasmonic resonator is configured to receive circularly polarized light at an intensity to thereby increase normal component of plasmon-generated opto-magnetic field, HOM,z, at least at the interface of one of i) the nano-sized plasmonic resonator and the nanomagnet, or ii) the nanomagnet and the capping layer, whereby the HOM,z direction is perpendicular to the rotational direction of the circularly polarized light and the nanomagnets in the magneto-plasmonic stack switches its magnetic moment in response to a change of the HOM,z direction in response to a change of the rotational direction of the circularly polarized light.

公开(公告)号：US20190154558A1

公开(公告)日：2019-05-23

申请号：US16248758

申请日：2019-01-15

Applicant: Purdue Research Foundation

Inventor： Justus C. Ndukaife ,  Alexandra Boltasseva ,  Agbai Nnanna

IPC: G01N15/00 ,  G02B5/00 ,  G21K1/00

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：US09784888B2

公开(公告)日：2017-10-10

申请号：US14434697

申请日：2013-10-09

Applicant: Purdue Research Foundation

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

IPC: G02B1/00 ,  G02B5/00 ,  B32B9/00 ,  H01L51/52 ,  B82Y20/00

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.

公开(公告)号：US20170003283A1

公开(公告)日：2017-01-05

申请号：US15174990

申请日：2016-06-06

Applicant: Purdue Research Foundation

Inventor： Justus Ndukaife ,  Alexander Kildishev ,  Agbai Nnanna ,  Alexandra Boltasseva

IPC: G01N33/543 ,  B01L3/00 ,  G01N1/40 ,  G02B5/00 ,  G02B3/00

CPC classification number: G01N33/54373 ,  B01L3/502761 ,  B03C5/00 ,  G01N1/40 ,  G01N15/10 ,  G01N21/658 ,  G01N2001/4038 ,  G01N2015/0019 ,  G01N2015/0065 ,  G02B5/008

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.

Abstract translation: 一种粒子感测系统，其包括将来自未聚焦或松散聚焦的光源的光聚焦到包含等离子体激元结构的表面上的对应的多个聚焦区域上的多个微透镜。 聚焦区域中等离子体结构对光的吸收导致等离子体激元结构中的散热并因此增加了聚焦区域中的表面温度。 当将电场施加到与表面接触的样品流体时，在流体中引起多个电热流，其迅速将悬浮颗粒传输到表面上的聚焦区域。 然后可以捕获和/或感测颗粒。