Block Copolymer Self-Assembled Nanoarchitectures For Flexible Capacitors

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Block Copolymer Self-Assembled Nanoarchitectures
For Flexible Capacitors
Ta-I Yang, Pinar Akcora, and Peter
Kofinas Department of Chemical and Biomolecular
Engineering , University of Maryland, College
Park, MD 20742-2111
DMR-0442029
Project Overview
Funtional Block Copolymers
Ba Nanocomposite ??
Polymer/BaSrTi, nanocomposite
Objective Develop nanoscale, flexible
nanocapacitor. Approach Use a microphase
separated diblock copolymer which self-assembles
into capacitor configuration. Investigate
nanocomposite dielectrics.
Blocks of sequences of repeat units of one
homopolymer chemically linked to blocks of
another homopolymer sequence Microphase
separation due to block incompatibility
Templates for confinement of nanoscale metals
Conclusions
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Block Copolymer Nanocapacitors

• The copolymer acted as a template to form
  well-dispersed nanoparticles within the polymer
  matrix.
• Electrical property tests have showed that the
  templated nanoparticles within the copolymer
  significantly increased the dielectric constant
  of the nanocomposite

Capacitor Synthesis
/
This material is based upon work supported by
the National Science Foundation and the
Intelligence Community through the joint
"Approaches to Combat Terrorism" Prorgram ( NSF
grant DMR-0442029)
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Block Copolymer Self-Assembled Nanoarchitectures
For Flexible Capacitors
Ta-I Yang, Pinar Akcora, and Peter
Kofinas Department of Chemical and Biomolecular
Engineering , University of Maryland, College
Park, MD 20742-2111
DMR-0442029
Broader Impacts
All-Solid State Capacitor advantages
Polymeric materials are thinner, lighter, space
effective, shape-flexible, cost effectiveness and
have good processability.
Production of thin films processed as
coatings or sheets Integrated electronics
distributed over large area Active circuit
components integrated on flexible substrate
Power conditioning for directed energy weapon
components High dielectric constant
dielectric Nanoscale structure
Low
breakdown voltage Nanoscale capacitors in
parallel
Highest capacitance Nanoscale electrode

High surface area
Conclusions
Potential Applications

• embedded capacitors for electromechanical
  systems
• supercapacitors as the next generation of
  energy storage

Educational Activities

• Undergraduate and Graduate student
• teaching, mentoring and research involvement
• Middle school polymer demonstrations

/
This material is based upon work supported by
the National Science Foundation and the
Intelligence Community through the joint
"Approaches to Combat Terrorism" Prorgram ( NSF
grant DMR-0442029)