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Patterning of Microorganisms and Microparticles through Sequential Capillarity-assisted Assembly
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Servo-integrated patterned media by hybrid directed self-assembly.

Shuaigang Xiao1, Xiaomin Yang, Philip Steiner

  • 1Media Research Center, Seagate Technology , 47010 Kato Road, Fremont, California 94538, United States.

ACS Nano
|November 8, 2014
PubMed
Summary
This summary is machine-generated.

A novel hybrid method fabricates advanced bit-patterned media templates for ultra-high-density data storage. This technique integrates block copolymers with lithography, achieving high resolution and embedded servo information for reliable magnetic storage.

Keywords:
bit-patterned mediablock copolymerdirected self-assemblyoverlayservo integrationspinstand

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Data Storage

Background:

  • Advancements in data storage require higher areal densities.
  • Bit-patterned media (BPM) offer a path to overcome superparamagnetic limits.
  • Fabricating BPM with integrated servo information presents significant challenges.

Purpose of the Study:

  • To develop a hybrid directed self-assembly (DSA) approach for fabricating servo-integrated bit-patterned media (BPM) templates.
  • To achieve ultra-high resolution and flexible servo pattern integration.
  • To demonstrate the functionality of the fabricated BPM for magnetic data storage.

Main Methods:

  • A hybrid DSA approach combining sphere-forming block copolymers with nanoimprint and optical lithography.
  • Utilizing nanoimprint to create prepatterns with distinct dimensions for data and servo fields.
  • Employing optical lithography for controlled selective self-assembly.
  • Integrating low-topography and high-topography graphoepitaxy techniques.

Main Results:

  • Fabrication of unprecedented servo-integrated BPM templates with 5 teradot/in.(2) resolution capability.
  • Successful integration of flexible servo information within the BPM templates.
  • Spinstand magnetic tests at 1 teradot/in.(2) demonstrated a low bit error rate (10(-2.43)).

Conclusions:

  • The developed hybrid DSA approach is effective for fabricating advanced BPM templates.
  • The approach enables flexible integration of servo information, crucial for data tracking.
  • This method shows significant potential for future ultra-high-density magnetic storage media development.