Seagate Technology Incorporated

International Business Machines Corporation

Hitachi Global Storage Technologies Netherlands B.v.

Other

Western Digital (Fremont), Inc.

Thomas Young Chang

David S Kuo

Kim Yang Lee

Koichi R Wago

ShuaiGang Xiao

Xiaomin Yang

Edward Hinpong Lee

Philip L Steiner

Ian J Beresford

Jyh-Shuey Jerry Lo

Koji Adachi

Kuo Hsing Hwang

David Perez

Thomas P Nolan

James Hennessy

Kaizhong Gao

Ganping Ju

Michael Andrew Parker

Terence Tin-Lok Lam

Shanlin Duan

Samuel Wonder Yuan

Wai Cheung Leung

Zengyuan Liu

Mohamad Towfik Krounbi

Edward Hin Pong Lee

Neil Leslie Robertson

Joachim Walter Ahner

David Marcus Tung

Glen A Garfunkel

Yingguo Peng

Timothy John Klemmer

Douglas Johnson Werner

Pin-Wei Huang

Donald Everett Curtiss

Jhy-Shuey Jerry Lo

David V Dougherty

Jim P Hennessy

Louis Joseph Serrano

Yingjian Chen

Jing Zhang

Bin Lu

Erik Jon Hutchinson

David Eugene Heim

Paul Max Jones

Yautzong Hsu

Shuaigang Xiao

Yu-En Percy Chang

Heng Gong

Tan Guo Liu

Sha Zhu

A heat-assisted magnetic recording (HAMR) device is configured to write regions of neutral polarity on a magnetic media during a same pass of the recording head in which other regions are written of positive polarity and negative polarity. The various disclosed write techniques may facilitate creation of 'zero state' (substantially net zero polarity) transition zones between each pair of data bits of opposite polarity and/or may facilitate the encoding of three different logical states (e.g., 1, 0, and −1) on the media.

Media design and write technique for creating neutral polarity transition zones

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.

Methods of manufacturing at least a portion of a magnetic layer of a magnetic recording disk, and related magnetic recording disks

An implantable or wearable kidney enclosure that is cylindrical, ovoid, or otherwise non-angular e.g., not rectangular or cuboid), having a circular or oval hemofilter that provides a blood flow pattern from an internal, central artery source radially outwards. Due to the efficient flow of the circular filter design, the enclosure can be made in a cylindrical low profile shape, resulting in a compact enclosure highly suitable for implantable and wearable dialysis applications.

Artificial kidney

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.

Method to fabricate a nanochannel for DNA sequencing based on narrow trench patterning process

A first wafer has a first stop layer deposited on a substrate, the substrate used to form a base support structure. A second wafer has a second stop layer deposited on a sacrificial substrate, and a filter layer deposited on the second stop layer. A rib layer is deposited on one of: the first stop layer of the first layer; or a third stop layer that is deposited over the filter layer. A rib pattern is formed in the rib layer. The first and second wafers are flip bonded such that the rib pattern is joined between the filter layer and the first stop layer. Elongated voids are formed within the filter layer. The base support structure is formed within the substrate of the first wafer such that there is a fluid flow path between the base support structure, the rib layer, and the elongated voids of the filter layer.

High-flux efficiency filter fabrication using a flip bond process with supportive structure

A DNA sequencing device, and related methods, include a nanopore or nanochannel structure, and a nanoelectrode. The nanoelectrode includes electrode members having free ends exposed within the nanopore or nanochannel structure, an electrode gap defined between of the free ends, and plated portions formed on the free ends to provide a reduced sized for the electrode gap.

Fabrication of a nanochannel for DNA sequencing using electrical plating to achieve electrode gap

A heat-assisted magnetic recording (HAMR) device is configured to write regions of neutral polarity on a magnetic media during a same pass of the recording head in which other regions are written of positive polarity and negative polarity. The various disclosed write techniques may facilitate creation of 'zero state' (substantially net zero polarity) transition zones between each pair of data bits of opposite polarity and/or may facilitate the encoding of three different logical states (e.g., 1, 0, and &#x2212;1) on the media.

Three-state single-pass recording in HAMR device with dual recording layers

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.

Fabrication of nanochannel with integrated electrodes for DNA sequencing using tunneling current

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.

Method to amplify transverse tunneling current discrimination of DNA nucleotides via nucleotide site specific attachment of dye-peptide

A DNA sequencing device having a first conductor electrically insulated from a second conductor, a voltage source and an amplifier electrically connected in series with the first conductor and the second conductor, a DNA polymerase attached to the first conductor and to the second conductor with matching biotinylated tag molecules, and an electric current monitor. A non-discriminating electrical signal is provided by the polymerase during pairing, which signal can be used as a marker to indicate that transcription is occurring between a single-type of free nucleotide and a base nucleotide of a template DNA strand.

DNA sequencing via direct electrical detection with free single nucleotide pairing with polymerase

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.

Nanostructures to control DNA strand orientation and position location for transverse DNA sequencing

A DNA sequencing device, and related methods, include a nanochannel sized to receive a DNA strand, a first electrode member exposed within the nanochannel, and a second electrode member exposed within the nanochannel and spaced apart from the first electrode to form an electrode gap. The second electrode member has a wedge shaped profile, and the first and second electrode members are operable to detect a change in electronic signal as the DNA strand passes through the electrode gap.

Fabrication of a wedge shaped electrode for enhanced DNA sequencing

A heat-assisted magnetic recording device includes a granular magnetic recording layer and a thermal absorption layer formed on top of the magnetic recording layer. The thermal absorption layer is patterned to include rows extending in a cross-track direction of the magnetic media, each adjacent pair of the rows being separated from one another by an insulating material.

Patterned thermal absorption layer for granular storage media

A method of forming a patterned media includes constraining growth of magnetic grains in a down-track direction without constraining the growth in a radial direction to cause the magnetic grains to align in rows extending in the radial direction. The patterned media may allow for data track radial width to be defined independent of grain size.

Radially patterned media for circumferentially constrained grain growth

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Menlo Park, CA, United States of America

Thomas Young Chang