Patents by Inventor Tong Zhao

Tong Zhao 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).

  • Power generation system and method with energy management
    Patent number: 10069303
    Abstract: A power generation system is provided. The system includes a bus, at least two converters, an energy-type energy storage unit (ES), a power-type energy storage unit (PS) and a controller. The ES and the PS are coupled in parallel to the bus through corresponding converters of the at least two converters. The controller is configured to control the ES and the PS through the corresponding converters in at least two conditions during a charging mode and a discharging mode: when a power for the ES and PS is below a power threshold, control the power to flow between the ES and the bus; and when the power is above the power threshold, control a part of the power to flow between the ES and the bus and another part of the power to flow between the PS and the bus. And a method for generating power is also provided.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: September 4, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Tong Zhao, Rong Li, Xu Fu, Bernard P. Landa
  • Devices including a NFT having at least one amorphous alloy layer
    Patent number: 10068592
    Abstract: Disclosed are devices that include a near field transducer (NFT), the NFT having a peg and a disc and the peg including peg material and at least one associated amorphous blocker layer, wherein the amorphous blocker layer includes an amorphous metal alloy and the amorphous blocker layer is within the peg material, on one or more surfaces of the peg material, or both.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: September 4, 2018
    Assignee: Seagate Technology LLC
    Inventors: Sarbeswar Sahoo, Tong Zhao, Xiaoyue Huang
  • Near field transducers (NFTS) including a protective layer and methods of forming
    Patent number: 10062401
    Abstract: Devices having air bearing surfaces (ABS), the devices include a near field transducer (NFT) that includes a disc; a peg, the peg including gold (Au), silver (Ag), copper (Cu), aluminum (Al), rhodium (Rh), iridium (Ir), or combinations thereof; and the peg having a front surface at the air bearing surface of the device, an opposing back surface, a top surface that extends from the front surface to the back surface, two side surfaces that extend from the front surface to the back surface and a bottom surface that extends from the front surface to the back surface; and a protective layer disposed on at least one surface of the peg, the protective layer comprising an oxide of a metal that has a higher oxidation tendency than that of the material of the peg.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: August 28, 2018
    Assignee: Seagate Technology LLC
    Inventors: Tong Zhao, Justin Brons, Michael Kautzky
  • Near field transducer (NFT) including peg and disc of different materials
    Patent number: 10037771
    Abstract: Devices having air bearing surfaces (ABS), the devices include a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: July 31, 2018
    Assignee: Seagate Technology LLC
    Inventors: Martin Blaber, Michael A. Seigler, Michael C. Kautzky, Tong Zhao, Justin Brons, John C. Duda, Yuhang Cheng
  • Hyperbolic metamaterial-based near-field transducer for heat assisted magnetic recording head
    Patent number: 10026421
    Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording. A near-field transducer comprising a peg is situated at or near an air bearing surface of the slider, and an optical waveguide of the slider is configured to couple light from a light source to the near-field transducer. The peg comprises a hyperbolic metamaterial, and the near-field transducer may further include an enlarged portion from which the peg extends, where the enlarged portion may also comprise a hyperbolic metamaterial.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 17, 2018
    Assignee: Seagate Technology LLC
    Inventors: Andres David Barbosa Neira, Roberto Fernandez Garcia, Michael James Hardy, Choon How Gan, Mark Anthony Gubbins, Florin Zavaliche, Tong Zhao, Martin Giles Blaber
  • Methods of forming materials for at least a portion of a NFT and NFTs formed using the same
    Patent number: 10014011
    Abstract: A method including depositing a plasmonic material at a temperature of at least 150° C.; and forming at least a peg of a near field transducer (NFT) from the deposited plasmonic material.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: July 3, 2018
    Assignee: Seagate Technology LLC
    Inventors: Sarbeswar Sahoo, Tong Zhao, Michael C. Kautzky
  • DEVICES INCLUDING A NEAR FIELD TRANSDUCER (NFT) INCLUDING PEG AND DISC FROM DIFFERENT MATERIALS
    Publication number: 20180144765
    Abstract: Devices that have an air bearing surface (ABS), the device includes a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material that includes gold or an alloy thereof and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold.
    Type: Application
    Filed: January 8, 2018
    Publication date: May 24, 2018
    Inventors: Martin Blaber, Tong Zhao, Michael C. Kautzky, Justin Brons, John C. Duda, Yuhang Cheng, Michael A. Seigler
  • DEVICES INCLUDING A NEAR FIELD TRANSDUCER (NFT), AT LEAST ONE CLADDING LAYER AND INTERLAYER THERE BETWEEN
    Publication number: 20180130486
    Abstract: A device that includes a near field transducer (NFT); at least one cladding layer adjacent the NFT; and a carbon interlayer positioned between the NFT and the at least one cladding layer.
    Type: Application
    Filed: September 18, 2017
    Publication date: May 10, 2018
    Inventors: Justin Glen Brons, Tong Zhao, Xiaoyue Huang, Michael C. Kautzky
  • DEVICES INCLUDING A DIFFUSION BARRIER LAYER
    Publication number: 20180090160
    Abstract: Devices that include a write pole; a near field transducer (NFT) that includes a peg and a disk, wherein the peg is at the ABS of the device; and a diffusion barrier layer positioned between the write pole and the peg of the NFT, the diffusion barrier layer including metals, nitrides, oxides, carbides, silicides, or amorphous material.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 29, 2018
    Inventors: Yuhang Cheng, Scott Franzen, Michael Seigler, James Wessel, Tong Zhao, John Duda, Sarbeswar Sahoo, Hui Brickner, Michael Kautzky
  • METHOD AND SYSTEM FOR IMAGE ENHANCEMENT
    Publication number: 20180089812
    Abstract: A method for image processing, which comprises the following steps: Generating a first histogram from a first image; Calculating a first parameter profile from the first image indicative of the quality of the first image; Adjusting the first parameter profile to generate a second parameter profile; Using the second parameter profile to generate a statistical distribution via a statistical distribution generator, wherein the statistical distribution is characterized by at least three parameters; Using the statistical distribution to perform a histogram specification to the first histogram of the first image to generate a second histogram; Generating a second image based on the first image and the second histogram
    Type: Application
    Filed: April 14, 2015
    Publication date: March 29, 2018
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guoyin WANG, Tong ZHAO, Bin XIAO
  • DEVICES INCLUDING METAL LAYER
    Publication number: 20180090159
    Abstract: Devices having an air bearing surface (ABS) and including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg includes a rear peg portion and a peg tip, the rear peg portion and the peg tip are different materials and the peg tip includes: one or more metals; one or more nanoparticles comprising oxides, nitrides, carbides or combinations thereof; one or more conducting oxides, conducting nitrides, conducting bromides, conducting carbides, or combinations thereof; one or more semiconductors; or combinations thereof.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 29, 2018
    Inventors: Tong Zhao, Yuhang Cheng, Martin Giles Blaber, Jie Gong, Edwin F. Rejda, Michael A. Seigler, Seung-Yeul Yang, Michael Kautzky, Yongjun Zhao, Justin Brons, Andrew J. Boyne, Kurt W. Wierman, Scott Franzen
  • NEAR FIELD TRANSDUCERS (NFTS) AND METHODS OF FORMING NFTS
    Publication number: 20180073135
    Abstract: Devices having an air bearing surface (ABS), the device including a near field transducer, the near field transducer having a peg and a disc, the peg having a region adjacent the ABS, the peg including a plasmonic material selected from gold (Au), silver (Ag), copper (Cu), ruthenium (Ru), rhodium (Rh), aluminum (Al), or combinations thereof; and at least one other secondary atom selected from germanium (Ge), tellurium (Te), aluminum (Al), antimony (Sb), tin (Sn), mercury (Hg), indium (In), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), silver (Ag), chromium (Cr), cobalt (Co), and combinations thereof, wherein a concentration of the secondary atom is higher at the region of the peg adjacent the ABS than a concentration of the secondary atom throughout the bulk of the peg. Methods of forming NFTs are also disclosed.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Inventors: Tong Zhao, Michael C. Kautzky, Sarbeswar Sahoo, Justin Brons, Jie Gong, Yuhang Cheng
  • NEAR FIELD TRANSDUCERS (NFTS) INCLUDING BARRIER LAYER AND METHODS OF FORMING
    Publication number: 20180075872
    Abstract: Devices having an air bearing surfaces (ABS), the devices including a near field transducer (NFT) that includes a disc having a front edge; a peg, the peg having a front surface at the air bearing surface of the apparatus, an opposing back surface, a top surface that extends from the front surface to the back surface, two side surfaces that expend from the front surface to the back surface and a bottom surface that extends from the front surface to the back surface; and a barrier layer, the barrier layer separating at least the back surface of the peg from the disc and the barrier layer having a thickness from 10 nm to 50 nm.
    Type: Application
    Filed: November 20, 2017
    Publication date: March 15, 2018
    Inventors: Martin Blaber, Jie Gong, Dimitar Dimitrov, Steve Riemer, Michael Kautzky, Tong Zhao, Yongjun Zhao
  • DEVICES INCLUDING A DIFUSSION BARRIER LAYER
    Publication number: 20180053520
    Abstract: Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.
    Type: Application
    Filed: October 13, 2017
    Publication date: February 22, 2018
    Inventors: Sarbeswar Sahoo, Martin Blaber, Hui Brickner, Tong Zhao, Yuhang Cheng, John Duda, Tae-Woo Lee
  • Propulsion system and method for driving a vehicle
    Patent number: 9895983
    Abstract: A propulsion system includes a traction drive system, a boost converter, an energy-type energy source, a power-type energy source, and an energy management system. The boost converter includes a high voltage side and a low voltage side. The boost converter is coupled to the traction drive system on the high voltage side. The energy-type energy source is coupled to the boost converter on the low voltage side thereof. The power-type energy source is coupled to the boost converter on the low voltage side thereof. The energy management system is coupled to the boost converter and configured to control the energy-type energy source and the power-type energy source through the boost converter in at least two conditions during a motoring mode.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: February 20, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Tong Zhao, Xi Lu, Ronghui Zhou, Fei Li
  • Devices including a near field transducer (NFT) including peg and disc from different materials
    Patent number: 9865283
    Abstract: Devices that have an air bearing surface (ABS), the device includes a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material that includes gold or an alloy thereof and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 9, 2018
    Assignee: Seagate Technology LLC
    Inventors: Martin Blaber, Tong Zhao, Michael C. Kautzky, Justin Brons, John C. Duda, Yuhang Cheng, Michael A. Seigler
  • Devices including a NFT having at least one amorphous alloy layer
    Patent number: 9852748
    Abstract: Disclosed are devices that include a near field transducer (NFT), the NFT having a peg and a disc and the peg including peg material and at least one associated amorphous blocker layer, wherein the amorphous blocker layer includes an amorphous metal alloy and the amorphous blocker layer is within the peg material, on one or more surfaces of the peg material, or both.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: December 26, 2017
    Assignee: Seagate Technology LLC
    Inventors: Sarbeswar Sahoo, Tong Zhao, Xiaoyue Huang
  • METHODS OF FORMING MATERIALS FOR AT LEAST A PORTION OF A NFT AND NFTS FORMED USING THE SAME
    Publication number: 20170365281
    Abstract: A method including depositing a plasmonic material at a temperature of at least 150° C.; and forming at least a peg of a near field transducer (NFT) from the deposited plasmonic material.
    Type: Application
    Filed: August 7, 2017
    Publication date: December 21, 2017
    Inventors: Sarbeswar Sahoo, Tong Zhao, Michael C. Kautzky
  • NEAR FIELD TRANSDUCER (NFT) INCLUDING PEG AND DISC OF DIFFERENT MATERIALS
    Publication number: 20170345448
    Abstract: Devices having air bearing surfaces (ABS), the devices include a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.
    Type: Application
    Filed: July 31, 2017
    Publication date: November 30, 2017
    Inventors: Martin Blaber, Michael A. Seigler, Michael C. Kautzky, Tong Zhao, Justin Brons, John C. Duda, Yuhang Cheng
  • Near-field transducer having secondary atom higher concentration at bottom of the peg
    Patent number: 9822444
    Abstract: Devices having an air bearing surface (ABS), the device including a near field transducer, the near field transducer having a peg and a disc, the peg having a region adjacent the ABS, the peg including a plasmonic material selected from gold (Au), silver (Ag), copper (Cu), ruthenium (Ru), rhodium (Rh), aluminum (Al), or combinations thereof; and at least one other secondary atom selected from germanium (Ge), tellurium (Te), aluminum (Al), antimony (Sb), tin (Sn), mercury (Hg), indium (In), zinc (Zn), iron (Fe), copper (Cu), manganese (Mn), silver (Ag), chromium (Cr), cobalt (Co), and combinations thereof, wherein a concentration of the secondary atom is higher at the region of the peg adjacent the ABS than a concentration of the secondary atom throughout the bulk of the peg, and a method of forming NFT thereof.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: November 21, 2017
    Assignee: Seagate Technology LLC
    Inventors: Tong Zhao, Michael C. Kautzky, Sarbeswar Sahoo, Justin Brons, Jie Gong, Yuhang Cheng