ORCID Profile
0000-0002-8121-198X
Current Organisation
University of South Australia
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Publisher: American Chemical Society (ACS)
Date: 16-04-2015
DOI: 10.1021/AM5089082
Abstract: An all polymer piezo yroelectric device was fabricated using β phase poly(vinylidene fluoride) (PVDF) as the active material and vapor phase polymerized (VPP) poly(3,4-ethylenedioxythiphene) (PEDOT) as the flexible electrode overlay material. Inherent problems usually associated with coating polymeric electrodes onto the low surface energy PVDF were overcome by air plasma treating the film in conjunction with utilizing the VPP technique to simultaneously synthesize and in situ deposit the PEDOT electrode. Strain measurements up to the breaking-strain of PVDF (approximately 35%) indicated that the change in R/Ro was significantly smaller for the PEDOT based electrodes compared to the platinum electrode. Plasma treatment of the PVDF film increased the level of surface oxygenated carbon species that contributed to increased surface energy, as confirmed by confirmed by contact angle measurement. The enhanced adhesion between the two polymers layers contributed to a significant increase in the measured piezoelectric output voltage from 0.2 to 0.5 V for the same strain conditions. Pyroelectric voltage outputs were obtained by placing the film onto and off of a hotplate, for temperatures up to 50 °C above ambient. Finally, as a proof of concept, a simple energy harvesting device (plastic tube with slots for mounting multiple piezo yro films) was fabricated. The device was able to generate a usable level of peak output current (>3.5 μA) from human inhalation and exhalation "waste energy".
Publisher: Wiley
Date: 26-03-2015
DOI: 10.1002/APP.42158
Publisher: Elsevier BV
Date: 02-2011
Publisher: Informa UK Limited
Date: 2004
Publisher: Elsevier BV
Date: 08-2007
Publisher: Wiley
Date: 17-09-2008
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B912324E
Publisher: Elsevier BV
Date: 04-2011
Publisher: Springer Science and Business Media LLC
Date: 08-12-2013
DOI: 10.1038/NMAT3824
Abstract: Polymers are lightweight, flexible, solution-processable materials that are promising for low-cost printed electronics as well as for mass-produced and large-area applications. Previous studies demonstrated that they can possess insulating, semiconducting or metallic properties here we report that polymers can also be semi-metallic. Semi-metals, exemplified by bismuth, graphite and telluride alloys, have no energy bandgap and a very low density of states at the Fermi level. Furthermore, they typically have a higher Seebeck coefficient and lower thermal conductivities compared with metals, thus being suitable for thermoelectric applications. We measure the thermoelectric properties of various poly(3,4-ethylenedioxythiophene) s les, and observe a marked increase in the Seebeck coefficient when the electrical conductivity is enhanced through molecular organization. This initiates the transition from a Fermi glass to a semi-metal. The high Seebeck value, the metallic conductivity at room temperature and the absence of unpaired electron spins makes polymer semi-metals attractive for thermoelectrics and spintronics.
Publisher: Elsevier BV
Date: 02-2014
Publisher: American Chemical Society (ACS)
Date: 08-10-2012
DOI: 10.1021/CM302899V
Publisher: Wiley
Date: 09-07-2008
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2BM00143H
Publisher: Springer Science and Business Media LLC
Date: 21-05-2014
DOI: 10.1038/NMAT3981
Publisher: American Chemical Society (ACS)
Date: 07-11-2013
DOI: 10.1021/AM403135P
Abstract: The vacuum vapor phase polymerization (VPP) technique is capable of producing conducting polymer films with conductivities up to 3400 S cm(-1). However, the method is not able to produce robust nano-thin films as required for transparent conducting electrode (TCE) applications. We show that with the addition of aprotic solvents or chelating agents to the oxidant mixture, it is possible to control the polymerization rate, and nucleation, in the VPP process. This provides the opportunity of altering the grain size and depositing conducting polymer films with a thickness of 16 to 200 nm with resulting optical transmission within the range 50-98% that are robust enough to endure the post polymerization processing steps. The figure of merit (FoM), which is used to quantify a film's suitability for TCE applications, results in values from 12 to 25. This result indicates that the nano-films outperform most of the previously reported graphene films and approaches the accepted industry standard for TCE applications.
Publisher: Oxford University Press (OUP)
Date: 17-09-2015
DOI: 10.1093/BRAIN/AWV259
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA00319B
Abstract: The effect of triblock copolymer additives on polymeric ORR electrodes is studied and a highly efficient polymeric electrode is developed.
Publisher: Elsevier BV
Date: 04-2010
Publisher: Elsevier BV
Date: 2008
Publisher: Wiley
Date: 19-08-2011
Publisher: Elsevier BV
Date: 09-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM32281A
Publisher: Wiley
Date: 25-06-2018
Publisher: Elsevier BV
Date: 09-2008
Publisher: American Chemical Society (ACS)
Date: 08-04-2013
DOI: 10.1021/CM400385S
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA46167J
Publisher: Elsevier BV
Date: 08-2014
Publisher: Elsevier BV
Date: 09-2013
Publisher: Elsevier BV
Date: 05-2012
Publisher: American Chemical Society (ACS)
Date: 08-07-2014
DOI: 10.1021/CM5014653
Publisher: Elsevier BV
Date: 05-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5TC03281D
Abstract: The interaction of ionic liquids and conducting polymers were studied, and organic electronic devices fabricated using this new insight.
Publisher: Informa UK Limited
Date: 06-2004
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TC30356J
Publisher: Elsevier BV
Date: 04-2011
Publisher: American Chemical Society (ACS)
Date: 24-10-2021
Publisher: Wiley
Date: 13-08-2009
Publisher: IOP Publishing
Date: 10-02-2015
Publisher: American Chemical Society (ACS)
Date: 11-08-2020
Publisher: IOP Publishing
Date: 28-08-2015
Publisher: Elsevier BV
Date: 08-2013
DOI: 10.1016/J.CIS.2013.10.018
Abstract: Superhydrophobic coatings are reported as promising candidates for anti-icing applications. Various studies have shown that as well as having ultra water repellency the surfaces have reduced ice adhesion and can delay water freezing. However, the structure or texture (roughness) of the superhydrophobic surface is subject to degradation during the thermocycling or wetting process. This degradation can impair the superhydrophobicity and the icephobicity of those coatings. In this review, a brief overview of the process of droplet freezing on superhydrophobic coatings is presented with respect to their potential in anti-icing applications. To support this discussion, new data is presented about the condensation of water onto physically decorated substrates, and the associated freezing process which impacts on the freezing of macroscopic droplets on the surface.
Start Date: 2010
End Date: 2012
Funder: Australian Research Council
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