Seagate Technology Incorporated

Sae Magnetics (hong Kong) Limited

Tim Rausch

Edward Charles Gage

Kaizhong Gao

Jon David Trantham

Wenzhong Zhu

William Albert Challener

Drew Michael Mader

Minjie Ma

John West Dykes

Gemma Mendonsa

Todd Michael Lammers

Alfredo Sam Chu

Walter Richard Eppler

Mehmet Fatih Erden

Riyan Alex Mendonsa

Housan Dakroub

Ian James Gilbert

Patrick Breckow Chu

Christophe Daniel Mihalcea

Jason Charles Jury

James Dillon Kiely

Joshua Ward Christensen

Peng Peng

Zengyuan Liu

Michael Allen Seigler

Mark A Gaertner

Chubing Peng

Kevin Arthur Gomez

Jan-Ulrich Thiele

Jason Bryce Gadbois

Tatsuya Shimizu

Robert Matousek

James E Angelo

Won Choul Yang

Franklin P Martens

Pu-Ling Lu

Stephanie Hernandez

Antonia Tsoukatos

Michael A Cordle

Prasanna Manja Ramakrishna

Kai Chiu Cheung

Keith Mountfield

Benjamin W Parish

Morovat Bryan Tayefeh

Xiong Liu

Bruce Douglas Buch

James Gary Wessel

Brett Robert Herdendorf

Krishnan Subramanian

Qiang Bi

Robert Earl Rottmayer

Barmeshwar Vikramaditya

Yang Yang

Raul Horacio Andruet

Steven Douglas Granz

Paul Max Jones

Terry Wayne McDaniel

Edmun ChianSong Seng

Raman Venkataramani

Thomas Dean Milster

Mark David Bedillion

Mark Ian Lutwyche

Teck Khoon Lim

Thomas C Zirps

Song Wee Teo

ChengYi Guo

Andrei Dorobantu

Kenneth R Burns

Tong Shirh Stone

Wei Peng

Jason Paul Zimmerman

Chuen Buan Lee

Ibrahim Kursat Sendur

Lifu Zhou

Shawn Stephen Silewski

Delai Zhou

Christine Green

Priyadarshee Deeptarag Mathur

James Carl Hatfield, Jr

Wai Yuen Lai

Abdelkrim Tatah

Chad Robert Barry

Wai Yeun Lai

Sai Sian Hon

John D Reinhardt

Josh Ward Christensen

Douglas Murphy

Troy De Jongh

Charles Paul Henry

Methods of writing data to a DNA strand by inserting data-encoding oligos or symbols into a DNA backbone. One particular method of synthesizing a DNA strand encoding data includes cleaving a DNA backbone into multiple segments, and pasting a plurality of data-encoding oligo symbols between the multiple segments, with the terminal ends of the segments joining homologous terminal ends of the symbols, resulting in the DNA strand encoding data comprising alternating segments and symbols.

DNA backbone editing for DNA data storage

A microfluidic lab-on-a-chip system for DNA gene assembly that utilizes a DNA symbol library and a DNA linker library. The lab-on-a-chip has a fluidic platform with a plurality of arrays operably connected to a voltage source and a controller for the voltage source, a set of first inlets operably connected to the fluidic platform, each first inlet for one DNA symbol from a DNA symbol library, a set of second inlets operably connected to the fluidic platform, each second inlet for one DNA linker from a DNA linker library, and a mixing area operably connected to the fluidic platform and to the plurality of first inlets and the plurality of second inlets.

Microfluidic lab-on-a-chip for gene synthesis

Systems and methods for identifying DNA strand size and purifying the DNA based on strand size using electrophoresis. The methods include moving, via voltage, a plurality of DNA strands through a separation gel from an inlet of a capillary or passage to either a first outlet or a second outlet dependent on the DNA strand length. In some implementations, the system is a capillary electrophoresis system. In other implementations, the system is a microfluidic lab-on-a-chip.

Gel electrophoresis for DNA purification

A microfluidic device for polymerase chain reaction (PCR) processing includes a platform with a microstructure with at least one reaction chamber, and a heating element. The heating element heats at least a part of the at least one reaction chamber. The heating element includes at least one spin torque oscillator (STO) configured to heat the at least a part of the at least one reaction chamber to one or more temperatures for PCR processing.

Microwave heating device for lab on a chip

A system for DNA gene assembly that utilizes a DNA symbol library and a DNA linker library. The symbol library has a number of DNA symbols each having a first overhanging end and a second overhanging end different than and non-complimentary to the first end, the first and second ends being the same nucleotides for each DNA symbol. The linker library has pairs of DNA linkers, a first linker of a pair having a first end and a second end and a second linker of the pair having a first end and a second end, the first end of the first linker being the same nucleotides for each first linker and the second end of the second linker being the same nucleotides for each second linker, wherein the second end of the first linker and the first end of the second linker have complementary nucleotides. The first linker joins to the first end of a DNA symbol and the second linker joins to the second end of another DNA symbol.

Methods of gene assembly and their use in DNA data storage

Two or more different recording currents are applied to a write coil of a recording head. A first of the two or more currents is a positive current and a second of the two or more currents is a negative current. In response to the application of the two or more different recording currents, a data stream is recorded to regions of a moving continuous magnetic recording medium such that each region has three or more magnetic states. The three or more magnetic states can be read from the continuous magnetic recording medium via a magnetic read transducer to recover the data stream.

Method and apparatus for magnetically recording data with three or more states per unit of data

A recording head for writing data on tracks of a data storage medium is provided. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes first and second writing-assistance wires positioned between the pole tip and the trailing shield in a down-track direction to enable a writing-assistance current to be provided to produce an assist magnetic field that augments a write field produced by the write pole.

Dual wire assisted magnetic recording

A disk drive apparatus determines a pattern of bits of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. The magnetic write transducer applies a magnetic field to a recording medium in response to the data signal. A laser power signal is applied to a laser that heats the recording medium while the magnetic field is applied. The laser power signal is modulated based on the pattern of bits. The modulation reduces differences between track widths of recorded marks having different elapsed time values and/or increases a signal-to-noise ratio of the recorded marks having different elapsed time values.

Method and apparatus for modulating a laser power signal during heat-assisted magnetic recording

A system for DNA gene assembly that utilizes a DNA symbol library and a DNA linker library. The symbol library has a number of DNA symbols each having a first overhanging end and a second overhanging end different than and non-complimentary to the first end, the first and second ends being the same nucleotides for each DNA symbol. The linker library has pairs of DNA linkers, a first linker of a pair having a first overhanging end and a second overhanging end and a second linker of the pair having a first overhanging end and a second overhanging end, the first end of the first linker being the same nucleotides for each first linker and the second end of the second linker being the same nucleotides for each second linker, wherein the second end of the first linker and the first end of the second linker have complementary nucleotides. The first linker joins to the first end of a DNA symbol and the second linker joins to the second end of another DNA symbol.

Two or more different elapsed time values are determined between transitions of a data signal applied to a magnetic write transducer of a heat-assisted magnetic recording apparatus. Two or more different power values of the laser are respectively associated with the two or more different elapsed time values. The two or more different power levels are selected to reduce differences between track widths of recorded marks having the two or more different elapsed time values.

Heat-assisted magnetic recording apparatus that modulates laser power to reduce differences between track widths of recorded marks

A heat-assisted recording head is moved onto a ramp such that the recording head is thermally isolated from a moving disk. A heating device is activated on the recording head to cause the recording head to obtain a high temperature that is not obtainable when proximate to the moving disk. The recording head is moved over the moving disk such that the recording head reaches an operating temperature that is below the high temperature. One or more temperatures between the high temperature and the operational temperature are determined at which a laser of the recording head experiences mode-hopping. The one or more temperatures are stored and accessed by a controller to mitigate mode hopes during an operation of the recording head.

System and method using on-ramp heating to detect laser mode hopping in heat assisted recording

A recording head for writing data on tracks of a data storage medium. The recording head includes a writer having a write pole and a trailing shield. The write pole includes a pole tip configured to write on the tracks of the data storage medium. The recording head also includes a writing-assistance wire that is positioned between the pole tip and the trailing shield in a down-track direction.

Wire assisted magnetic recording with an alternating current driving the wire

Apparatus for data storage in a cartridge library archival system. In some embodiments, a plurality of portable data storage cartridges are provided. Each cartridge has a sealed housing which encloses at least one head-disc interface (HDI) with a magnetic data transducer adjacent a rotatable data recording medium. An access station has control electronics configured to transfer data signals between a memory and the transducer of a selected cartridge loaded to the access station. The access station further has an external voice coil motor (VCM) configured to engage and advance the transducer of the selected cartridge across a recording surface of the medium. A transport mechanism can be used to automatically load the cartridges to the access station. Multiple cartridges can be loaded sequentially or concurrently to support various data transfer operations.

Data storage cartridge with magnetic head-disc interface (HDI)

A heater power of a heat-assisted magnetic recording head is set based on an initial head-medium clearance estimate in response to the heater power. For a plurality of iterations, an optimum laser power of the recording head is determined and a heater power is set for a next iteration that results in an optimum heater power for the optimum laser power. If differences in the heater and laser powers between two subsequent iterations are below thresholds, the iterations are stopped and the optimum heater power and the optimum laser power for one of the subsequent iterations are used as an operational heater power and an operational laser power.

Procedure for setting laser and heater power in HAMR device

Growing community of inventors

Farmington, MN, United States of America

Tim Rausch