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Title: Vertically aligned P(VDF-TrFE) core-shell structures on flexible pillar arrays

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep10728· OSTI ID:1221905
 [1];  [2];  [2];  [3];  [4];  [3];  [1];  [2];  [3]
  1. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Department of Materials Science and Engineering; Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Graduate School of Energy Environment Water Sustainability
  3. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Department of Materials Science and Engineering
  4. Argonne National Lab. (ANL), Lemont, IL (United States). Nuclear Engineering Division
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PVDF and P(VDF-TrFE) nano-and micro-structures have been widely used due to their potential applications in several fields, including sensors, actuators, vital sign transducers, and energy harvesters. In this study, we developed vertically aligned P(VDF-TrFE) core-shell structures using high modulus polyurethane acrylate (PUA) pillars as the support structure to maintain the structural integrity. In addition, we were able to improve the piezoelectric effect by 1.85 times from 40 +/- 2 to 74 +/- 2 pm/V when compared to the thin film counterpart, which contributes to the more efficient current generation under a given stress, by making an effective use of the P(VDF-TrFE) thin top layer as well as the side walls. We attribute the enhancement of piezoelectric effects to the contributions from the shell component and the strain confinement effect, which was supported by our modeling results. We envision that these organic- based P(VDF-TrFE) core-shell structures will be used widely as 3D sensors and power generators because they are optimized for current generations by utilizing all surface areas, including the side walls of core-shell structures.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Research Foundation of Korea (NRF); USDOE Office of Science (SC)
Grant/Contract Number:
AC02-06CH11357; 2010-0015063; 2011K000674; 20103020060010; 2014R1A4A1003712; SC1100
OSTI ID:
1221905
Alternate ID(s):
OSTI ID: 1356242
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

References (23)

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Cited By (7)

Anodized Aluminum Oxide/Polydimethylsiloxane Hybrid Mold for Roll-to-Roll Nanoimprinting journal April 2018
A One-Structure-Based Hybridized Nanogenerator for Scavenging Mechanical and Thermal Energies by Triboelectric-Piezoelectric-Pyroelectric Effects journal February 2016
Electrospun poly(vinylidene fluoride-trifluoroethylene)/zinc oxide nanocomposite tissue engineering scaffolds with enhanced cell adhesion and blood vessel formation journal May 2017
A flexible triboelectric-piezoelectric hybrid nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT for wearable devices journal November 2016
Size-dependent piezoelectric and mechanical properties of electrospun P(VDF-TrFE) nanofibers for enhanced energy harvesting journal January 2016
Piezoelectric Response in Hybrid Micropillar Arrays of Poly(Vinylidene Fluoride) and Reduced Graphene Oxide journal June 2019
Piezoelectric Materials for Medical Applications book August 2018

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Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
P(VDF - TrFE)
Piezoelectric polymers
energy generation
in - situ electromechanical characterization
vertically aligned core - shell structures