Gururaj V Naik

US Patent:

20160120978, May 5, 2016

Filed:

May 23, 2014

Appl. No.:

14/896493

Inventors:

- West Lafayette IN, US
Alexander KILDISHEV - West Lafayette IN, US
Gururaj NAIK - West Lafayette IN, US
Vladimir M. SHALAEV - West Lafayette IN, US

International Classification:

A61K 41/00
A61K 9/51
A61K 9/00
A61N 5/06
A61K 47/48

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.

US Patent:

20150287425, Oct 8, 2015

Filed:

May 19, 2014

Appl. No.:

14/401917

Inventors:

- West Lafayette IN, US
Alexander Kildishev - West Lafayette IN, US
Vladimir M. Shalaev - West Lafayette IN, US
Donald Stocks - Lafayette IN, US
Gururaj Naik - West Lafayette IN, US

International Classification:

G11B 5/31
G11B 5/60

Abstract:

An apparatus and method for heat-assisted magnetic recording (HAMR) employing a near-field transducer (NFT) made of plasmonic ceramic materials or intermetallics are disclosed. The NFT is made of a piasmonic material as well as a protective outer layer, which provides for longer usefulness and improved performance of the NFT and recording device. The plasmonic materials used include but are not limited to TiN, ZrN, HfN, TaN, VN, TiSi, TiAlN, TiZrN, ZnO, SnO, InO, RuO, LuO, WO, and MgB. Such materials, in combination with a protective layer, provide higher resistances and greater performance at temperatures required for HAMR, ranging from 300 up to 500 degrees Celsius.

US Patent:

20150288318, Oct 8, 2015

Filed:

Jun 6, 2014

Appl. No.:

14/402343

Inventors:

- West Lafayette IN, US
Alexander Kildishev - West Lafayette IN, US
Vladimir M. Shalaev - West Lafayette IN, US
Gururaj Naik - West Lafayette IN, US

International Classification:

H02S 10/30
H01L 31/055

Abstract:

The present invention provides a new system and new devices comprising highly efficient metamaterial-based absorbers and emitters which may be employed in various energy harvesting applications Compelling conditions such as high temperatures. The employment of ceramic materials in such applications enables devices with longer lifetimes and improved performance. Specific geometric and structural designs, e.g., by arrangement of plasmonic and dielectric structures, of the metamaterials provide for efficient absorption of light within a broad spectral range and emission of that energy in a particular range via selective emitters which may, in turn, be coupled to other devices.