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：US20200054752A1

公开(公告)日：2020-02-20

申请号：US16665319

申请日：2019-10-28

Applicant: Purdue Research Foundation

Inventor： Urcan Guler ,  Alexander Kildishev ,  Gururaj Naik ,  Alexandra Boltasseva ,  Vladimir M. Shalaev

IPC: A61K41/00 ,  A61N5/06 ,  A61K9/00 ,  A61K9/51 ,  A61K47/69

Abstract: Disclosed herein are nanoparticle-based plasmonic solutions to therapeutic applications employing titanium nitride (TiN) and other non-stoichiometric compounds as the plasmonic material. Current solutions are suboptimal because they require complex shapes, large particle sizes, and a narrow range of sizes, in order to achieve plasmonic resonances in the biological window. The nanoparticles discloses herein provide plasmonic resonances occurring in the biological window even with small sizes, simple shapes, and better size dispersion restrictions. Local heating efficiencies of such nanoparticles outperform currently used Au and transition metal nanoparticles. The use of smaller particles with simpler shapes and better heating efficiencies allows better diffusion properties into tumor regions, larger penetration depth of light into the biological tissue, and the ability to use excitation light of less power.