公开(公告)号：US10269381B1

公开(公告)日：2019-04-23

申请号：US15793635

申请日：2017-10-25

Applicant: Seagate Technology LLC

Inventor： Thomas Young Chang ,  Thomas Patrick Nolan

IPC: G11B5/66 ,  G11B5/667 ,  G11B5/00 ,  G11B5/706

Abstract: An apparatus includes a first magnetic layer. A second magnetic layer overlies the first magnetic layer and is magnetically softer than the first magnetic layer. An exchange control layer is between the first magnetic layer and the second magnetic layer. The exchange control layer is magnetic and increases vertical coupling between the first magnetic layer and the second magnetic layer.

公开(公告)号：US11948614B2

公开(公告)日：2024-04-02

申请号：US17676664

申请日：2022-02-21

Applicant: Seagate Technology LLC

Inventor： Xiaomin Yang ,  Kim Yang Lee ,  Thomas Young Chang ,  ShuaiGang Xiao ,  Sha Zhu

IPC: G11B5/84 ,  G03F7/00 ,  G03F7/36

CPC classification number: G11B5/84 ,  G03F7/0002 ,  G03F7/36

Abstract: The present disclosure relates to methods of manufacturing at least a portion of a magnetic layer of a magnetic recording disk. The methods include forming a plurality of sacrificial, discrete structures via imprint lithography. The sacrificial, discrete structures are used to form a plurality of three-dimensional segregant structures in a magnetic layer of the magnetic recording disk. The present disclosure also relates to corresponding magnetic recording disks.

公开(公告)号：US20200377939A1

公开(公告)日：2020-12-03

申请号：US16909827

申请日：2020-06-23

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Kim Yang Lee ,  Thomas Young Chang ,  David S. Kuo ,  ShuaiGang Xiao ,  Xiaomin Yang ,  Koichi Wago

IPC: C12Q1/6869 ,  G01N27/327 ,  B81C1/00 ,  G01N27/447 ,  B01L3/00

Abstract: A DNA sequencing device and related methods, wherein the device includes a substrate, a nanochannel formed in the substrate, a first electrode positioned on a first side of the nanochannel, and a second electrode. The second electrode is positioned on a second side of the nanochannel opposite the first electrode and is spaced apart from the first electrode to form an electrode gap that is exposed in the nanochannel. At least a portion of first electrode is movable relative to the second electrode to decrease a size of the electrode gap.

公开(公告)号：US10761058B2

公开(公告)日：2020-09-01

申请号：US15886608

申请日：2018-02-01

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Thomas Young Chang ,  David S. Kuo ,  Kim Yang Lee ,  Koichi Wago

IPC: G01N27/447 ,  B01L3/00 ,  G01N33/487 ,  C12Q1/6869 ,  B82Y15/00 ,  B82Y30/00

Abstract: A DNA sequencing device, and related method, which include an electrode and a plurality of spaced apart alignment structures. The electrode defines an electrode gap, the electrode being operable to detect a change in tunneling current as a DNA strand passes through the electrode gap. The plurality of spaced apart alignment structures are arranged to position nucleotides of the DNA strand in a predetermined orientation as the DNA strand passes through the electrode gap.

公开(公告)号：US10752947B2

公开(公告)日：2020-08-25

申请号：US15886736

申请日：2018-02-01

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Thomas Young Chang ,  Philip L. Steiner ,  Kim Yang Lee ,  David S. Kuo

IPC: C12P19/34 ,  C12Q1/6869 ,  C40B40/06

Abstract: Apparatus and methods to identify nucleotides of a DNA strand. The method includes exposing the DNA strand to a first dye or peptide, attaching the first dye or peptide to a first type of nucleotide (A,T,C,G) of the DNA strand, the first dye or peptide changing a conductance of the first type of nucleotide to which the first dye or peptide is attached, and measuring a tunneling current signal for all nucleotides of the DNA strand, the changed conductance of the first type of nucleotide providing amplified tunneling current discrimination of the nucleotides of the DNA strand.

公开(公告)号：US10655164B2

公开(公告)日：2020-05-19

申请号：US15886442

申请日：2018-02-01

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Koichi Wago ,  ShuaiGang Xiao ,  Xiaomin Yang ,  Kim Yang Lee ,  David S. Kuo ,  Thomas Young Chang

IPC: G01N27/327 ,  C12Q1/6825 ,  C12Q1/6874 ,  G01N27/447 ,  B01L3/00 ,  C12Q1/6837 ,  G01N27/414 ,  C12Q1/6806 ,  G01N33/487 ,  C12Q1/6869

Abstract: Apparatus and methods to sequence DNA. A DNA sequencing device includes a passage, a first electrode, and a second electrode. The passage has a width and a length. The first and second electrodes are exposed within the passage and spaced apart from each other to form an electrode gap. The electrode gap is no greater than about 2 nm. The DNA sequencing device is operable to measure with the first and second electrodes a change in electronic signal in response to nucleotides of a DNA strand passing through the electrode gap.

公开(公告)号：US10564119B2

公开(公告)日：2020-02-18

申请号：US15886685

申请日：2018-02-01

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： David S. Kuo ,  ShuaiGang Xiao ,  Kim Yang Lee ,  Xiaomin Yang ,  Koichi Wago ,  Thomas Young Chang

IPC: G01N27/327 ,  G01N33/487 ,  B82Y40/00 ,  G01N33/543 ,  C12Q1/6869 ,  B82Y5/00

Abstract: A DNA sequencing device includes a first layer having a nanochannel formed therein, and a pair of electrodes arranged vertically relative to each other and spaced apart to define an electrode gap. The electrode gap is exposed in the nanochannel, and the electrode gap is in the range of about 0.3 nm to about 2 nm.

公开(公告)号：US20140127533A1

公开(公告)日：2014-05-08

申请号：US14154018

申请日：2014-01-13

Applicant: Seagate Technology LLC

Inventor： Shuaigang Xiao ,  Thomas Young Chang ,  Yingguo Peng ,  David S. Kuo ,  Kaizhong Gao ,  Thomas P. Nolan ,  Ganping Ju

IPC: G11B5/73 ,  G11B5/84

CPC classification number: G11B5/7325 ,  G11B5/84 ,  G11B5/855

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.

Abstract translation: 垂直磁性介质包括衬底，图案化模板，种子层和磁性层。 图案化模板形成在基板上并且包括彼此均匀间隔开的多个生长位点。 种子层形成在图案化模板和基板的暴露区域上。 将磁性材料溅射沉积到种子层上，其中一颗磁性材料成核在每个生长位点上。 通过控制优化垂直磁性介质性能的生长部位的位置来减小磁性材料的粒度分布。

公开(公告)号：US12254907B2

公开(公告)日：2025-03-18

申请号：US18592111

申请日：2024-02-29

Applicant: Seagate Technology LLC

Inventor： Thomas Young Chang ,  Aneesh Venugopal ,  Philip Lisle Steiner

IPC: G11B5/31 ,  G11B5/66 ,  G11B5/00

Abstract: An apparatus is configured to include a first magnetic layer, a second magnetic layer and a break layer between the first magnetic layer and the second magnetic layer. The first magnetic layer includes a Curie temperature gradient between a first surface and a second surface of the first magnetic layer. The second magnetic layer includes a Curie temperature gradient between a third surface and a fourth surface of the second magnetic layer. The first magnetic layer has an average Curie temperature that is higher than the second magnetic layer.

公开(公告)号：US11732295B2

公开(公告)日：2023-08-22

申请号：US17137837

申请日：2020-12-30

Applicant: Seagate Technology LLC

Inventor： Xiaomin Yang ,  ShuaiGang Xiao ,  David S. Kuo ,  Koichi Wago ,  Thomas Young Chang

IPC: G03F7/40 ,  G03F7/004 ,  C12Q1/6869 ,  C12M1/34 ,  B82Y15/00

CPC classification number: C12Q1/6869 ,  C12M1/34 ,  B82Y15/00 ,  C12Q2563/159 ,  C12Q1/6869 ,  C12Q2565/607 ,  C12Q2565/629

Abstract: Apparatus and methods relating to DNA sequencing are provided. In one embodiment, a DNA sequencing device includes a nanochannel having a width that is approximately 0.3 nm to approximately 20 nm. A pair of electrodes having portions exposed to the nanochannel may form a tunneling current electrode (TCE) with an electrode gap of approximately 0.1 nm to approximately 2 nm, and more particularly about 0.3 nm to about 1 nm. In one embodiment, at least one of the pair of electrodes is formed as a suspended electrode. An actuator may be associated with the suspended electrode to displace it relative to the other electrode. In various embodiments, the nanochannel and/or the electrodes may be formed using thermal reflow processes to reduce the size of such features.