Patents by Inventor Shuaigang Xiao

Shuaigang Xiao 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).

  • Patent number: 9079216
    Abstract: The embodiments disclose a method of fabricating servo integrated templates including depositing a protective layer on servo zone resist layer patterns, patterning integrated data zone features into a substrate, depositing a protective layer on data zones and removing the servo zone protective layer and patterning integrated servo zone features into the substrate and removing the data zone protective layer creating a substrate template used in fabricating data and servo zone integrated patterned stacks.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: July 14, 2015
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, XiaoMin Yang, Yautzong Hsu, HongYing Wang, Kim Lee
  • Publication number: 20150179414
    Abstract: Provided herein is an apparatus, including a patterned resist overlying a substrate; a number of features of the patterned resist, wherein the number of features respectively includes a number of sidewalls; and a sidewall-protecting material disposed about the number of sidewalls, wherein the sidewall-protecting material is characteristic of a conformal, thin-film deposition, and wherein the sidewall-protecting material facilitates a high-fidelity pattern transfer of the patterned resist to the substrate during etching.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 25, 2015
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Shuaigang Xiao, David Kuo, Kim Y. Lee, XiaoMin Yang, Justin Hwu
  • Publication number: 20150118625
    Abstract: Provided herein is a method, including a) transferring an initial pattern of an initial template to a substrate; b) performing block copolymer self-assembly over the substrate with a density multiplication factor k; c) creating a subsequent pattern in a subsequent template with the density multiplication factor k; and d) repeating steps a)-c) with the subsequent template as the initial template until a design specification for the subsequent pattern with respect to pattern density and pattern resolution is met.
    Type: Application
    Filed: January 2, 2015
    Publication date: April 30, 2015
    Inventors: XiaoMin Yang, Zhaoning Yu, Kim Yang Lee, Michael Feldbaum, Yautzong Hsu, Wei Hu, Shuaigang Xiao, Henry Yang, HongYing Wang, Rene Johannes Marinus van de Veerdonk, David Kuo
  • Publication number: 20150116690
    Abstract: A method is disclosed that includes forming at least one substrate alignment mark and at least one lithography alignment mark in a substrate; forming a seed layer on the substrate; and forming a guide pattern and at least one guide pattern alignment mark in the seed layer, where the at least one guide pattern alignment mark is formed over the at least one substrate alignment mark. The method further includes determining an alignment error of the at least one guide pattern alignment mark relative to the at least one substrate alignment mark; and patterning features on at least one region of the substrate, where the features are positioned on the substrate based on the at least one lithography alignment mark and the alignment error.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: HongYing Wang, Kim Y Lee, Yautzong Hsu, Nobuo Kurataka, Gennady Gauzner, Shuaigang Xiao
  • Patent number: 8993060
    Abstract: A method includes: providing a substrate having a plurality of chemically contrasted alignment features, and depositing a self-assembled material on at least a portion of the substrate, wherein the position and/or orientation of substantially spherical or cylindrical domains of the self-assembled material is directed by the alignment features, to form a nanostructure pattern, and wherein the period of the alignment features is between about 2 times and about 10 times the period of the spherical or cylindrical domains. An apparatus fabricated according to the method is also provided.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: March 31, 2015
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, Xiaomin Yang
  • Patent number: 8941938
    Abstract: Provided herein is an apparatus, including a first region corresponding to a data region in a patterned recording medium; a first set of features in the first region; a second region corresponding to a servo region in a patterned recording medium; and a second set of features in the second region including rhomboidal protrusions, wherein the first set of features and the second set of features are circumferentially aligned in accordance with concentrically circular lines etched into the apparatus across the first region and the second region.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: January 27, 2015
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, XiaoMin Yang, David S. Kuo, Kim Y. Lee, Koichi Wago, Yautzong Hsu
  • Publication number: 20150017481
    Abstract: The embodiments disclose a structure, including a first layer selectively etched on a substrate with a seedlayer deposited thereon, a first layer bit patterned growth guiding mechanism on the seedlayer, and a plurality of bit patterned magnetic recording features grown on the seedlayer guided by the growth guiding mechanism.
    Type: Application
    Filed: June 18, 2014
    Publication date: January 15, 2015
    Inventors: Thomas P. Nolan, Kim Y. Lee, Shuaigang Xiao, Tom Chang, Yingguo Peng
  • Patent number: 8848315
    Abstract: A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then formed in the resist, and the resist is heated to cause the cross -sectional profile of the trench to assume a trapezoidal shape. The resist is then capped with another resist layer and further heated to cause the width of the trapezoidal trench to become narrower. The cap layer and removable material layer at the bottom of the trench are then removed and the trench filled with magnetic material by electroplating. The resist and seedlayer external to the trench are finally removed to form a write pole with a trapezoidal cross-section.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: September 30, 2014
    Assignee: Seagate Technology LLC
    Inventors: XiaoMin Yang, Shuaigang Xiao, Jie Gong, Michael Seigler
  • Publication number: 20140127533
    Abstract: A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: Seagate Technology LLC
    Inventors: Shuaigang Xiao, Thomas Young Chang, Yingguo Peng, David S. Kuo, Kaizhong Gao, Thomas P. Nolan, Ganping Ju
  • Patent number: 8673541
    Abstract: Patterned substrates templates are provided, as well as methods comprising a combination of lithography and self-assembly techniques. The patterned substrates may comprise first and second patterns.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 18, 2014
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, XiaoMin Yang, Yuan Xu, Lei Wan
  • Patent number: 8628867
    Abstract: A perpendicular magnetic media includes a substrate, a patterned template, a seed layer and a magnetic layer. The patterned template is formed on the substrate and includes a plurality of growth sites that are evenly spaced apart from each other. The seed layer is formed over the patterned template and the exposed areas of the substrate. Magnetic material is sputter deposited onto the seed layer with one grain of the magnetic material nucleated over each of the growth sites. The grain size distribution of the magnetic material is reduced by controlling the locations of the growth sites which optimizes the performance of the perpendicular magnetic media.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: January 14, 2014
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, Thomas Young Chang, Yingguo Peng, David Kuo, Kaizhong Gao, Thomas Patrick Nolan, Ganping Ju
  • Patent number: 8416647
    Abstract: A near field transducer (NFT) that includes a disk, the disk having a top surface, a side surface, and a center; a peg, the peg positioned adjacent the side surface of the disk; and a heat sink, the heat sink positioned on the top surface of the disk, and the heat sink having an effective center, wherein the NFT has a peg axis, which is defined by the location of the peg adjacent the side surface of the disk, and a non-peg axis, which is perpendicular to the peg axis, and wherein the effective center of the heat sink is positioned at about the center of the disk.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: April 9, 2013
    Assignee: Seagate Technology LLC
    Inventors: Yongjun Zhao, Shuaigang Xiao
  • Patent number: 8404432
    Abstract: A lithography process for manufacturing bit-island storage mediums that results in improved resolution and uniformity between bit-islands. The lithography process includes applying a resist coating polymer to a surface of a substrate. Selected areas of the resist coating polymer are then exposed to an energy source, wherein each selected area is exposed to the energy source multiple times to provide a time-averaged exposure of the selected areas that reduces errors caused by noise associated with the energy source. After exposure of the resist coating to the energy source, a selective developer solution is applied to the resist coating to develop the fully exposed regions of the resist coating while leaving undeveloped the partially exposed regions of the resist coating. A polymer reflow material is applied to the developed resist pattern and heated to a selected temperature.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: March 26, 2013
    Assignee: Seagate Technology LLC
    Inventors: XiaoMin Yang, Shuaigang Xiao
  • Publication number: 20130010387
    Abstract: A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then formed in the resist, and the resist is heated to cause the cross-sectional profile of the trench to assume a trapezoidal shape. The resist is then capped with another resist layer and further heated to cause the width of the trapezoidal trench to become narrower. The cap layer and removable material layer at the bottom of the trench are then removed and the trench filled with magnetic material by electroplating. The resist and seedlayer external to the trench are finally removed to form a write pole with a trapezoidal cross-section.
    Type: Application
    Filed: September 4, 2012
    Publication date: January 10, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: XiaoMin Yang, Shuaigang Xiao, Jie Gong, Michael Seigler
  • Patent number: 8286329
    Abstract: A near field transducer (NFT) that includes a disk, the disk having a top surface, a side surface, and a center; a peg, the peg positioned adjacent the side surface of the disk; and a heat sink, the heat sink positioned on the top surface of the disk, and the heat sink having an effective center, wherein the NFT has a peg axis, which is defined by the location of the peg adjacent the side surface of the disk, and a non-peg axis, which is perpendicular to the peg axis, and wherein the effective center of the heat sink is positioned at about the center of the disk.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yongjun Zhao, Shuaigang Xiao
  • Patent number: 8268545
    Abstract: The formation of a device using block copolymer lithography is provided. The formation of the device includes forming a block copolymer structure. The block copolymer structure includes a first polymer and a second polymer. The block copolymer structure also includes a first component deposited between adjacent blocks of the first polymer and a second component deposited between adjacent blocks of the second polymer. A template is developed by removing either the first and second polymers or the first and second components from the block copolymer structure. The formation of the device also includes lithographically patterning the device utilizing the block copolymer structure template. The device may be a data storage medium.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: September 18, 2012
    Assignee: Seagate Technology LLC
    Inventors: Shuaigang Xiao, Xiaomin Yang
  • Patent number: 8259411
    Abstract: A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then formed in the resist, and the resist is heated to cause the cross-sectional profile of the trench to assume a trapezoidal shape. The resist is then capped with another resist layer and further heated to cause the width of the trapezoidal trench to become narrower. The cap layer and removable material layer at the bottom of the trench are then removed and the trench filled with magnetic material by electroplating. The resist and seedlayer external to the trench are finally removed to form a write pole with a trapezoidal cross-section.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: September 4, 2012
    Assignee: Seagate Technology LLC
    Inventors: XiaoMin Yang, Shuaigang Xiao, Jie Gong, Michael Seigler
  • Publication number: 20120164389
    Abstract: Imprinted apparatuses, such as Bit-Patterned Media (BPM) templates, Discrete Track Recording (DTR) templates, semiconductors, and photonic devices are disclosed. Methods of fabricating imprinted apparatuses using a combination of patterning and block copolymer (BCP) self-assembly techniques are also disclosed.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Inventors: XIAOMIN YANG, ZHAONING YU, KIM YANG LEE, MICHAEL FELDBAUM, YAUTZONG HSU, WEI HU, SHUAIGANG XIAO, HENRY YANG, HONGYING WANG, RENE JOHANNES MARINUS VAN DE VEERDONK, DAVID KUO
  • Publication number: 20120135159
    Abstract: This disclosure describes a method for nano-patterning by incorporating one or more block copolymers and one or more nano-imprinting steps in the fabrication process. The block copolymers may be comprised of organic or organic components, and may be lamellar, spherical or cylindrical. As a result, a patterned medium may be formed having one-dimensional or two-dimensional patterns with a feature pitch of 5-100 nm and/or a bit density of at least 1 Tdpsi.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: Seagate Technology LLC
    Inventors: Shuaigang Xiao, Renè Johannes Marinus Van De Veerdonk, Kim Yang Lee, David Kuo, XiaoMin Yang, Wei Hu
  • Publication number: 20120107583
    Abstract: Patterned substrates templates are provided, as well as methods comprising a combination of lithography and self-assembly techniques. The patterned substrates may comprise first and second patterns.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Inventors: Shuaigang Xiao, XiaoMin Yang, Yuan Xu, Lei Wan