R
Rudolf Kiefer
Researcher at Ton Duc Thang University
Publications - 112
Citations - 1338
Rudolf Kiefer is an academic researcher from Ton Duc Thang University. The author has contributed to research in topics: Polypyrrole & Conductive polymer. The author has an hindex of 19, co-authored 99 publications receiving 1045 citations. Previous affiliations of Rudolf Kiefer include University of Auckland & University of Tartu.
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Journal ArticleDOI
Mixed-ion linear actuation behaviour of polypyrrole
Rudolf Kiefer,Shu Yi Chu,Paul A. Kilmartin,Graham A. Bowmaker,Ralph P. Cooney,Jadranka Travas-Sejdic +5 more
TL;DR: In this article, the linear actuation of polypyrrole (PPy) films polymerized at 0.85 and −27 degrees C in propylene carbonate solutions of tetrabutylammonium trifluoromethanesulfonate (TBACF 3 SO 3 ) was investigated in the same monomer free electrolyte.
Journal ArticleDOI
Impact of biochar and compost amendment on soil quality, growth and yield of a replanted apple orchard in a 4-year field study.
Mahdi Safaei Khorram,Gan Zhang,Akram Fatemi,Rudolf Kiefer,Kamalodin Maddah,Mujtaba Baqar,Mohamad Pauzi Zakaria,Gang Li +7 more
TL;DR: Biochar and compost were beneficial in improving soil quality, mainly by increasing soil nutrient content and decreasing soil bulk density, and in increasing plant growth at early growth stages of apple orchards, but failed to enhance overall yield and fruit quality.
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Electrolyte and solvent effects in PPy/DBS linear actuators
Nihan Aydemir,Nihan Aydemir,Paul A. Kilmartin,Jadranka Travas-Sejdic,Jadranka Travas-Sejdic,Arko Kesküla,Anna-Liisa Peikolainen,James Parcell,Madis Harjo,Alvo Aabloo,Rudolf Kiefer,Rudolf Kiefer +11 more
TL;DR: In this paper, a series of electro-chemo-mechanical deformation measurements on electrochemically prepared free-standing films of polypyrrole doped with dodecylbenzenesulfonate (DBS) were investigated under isometric (constant force) conditions in an organic solvent- and in aqueous based-electrolytes during cyclic voltammetric and square wave potential step experiments.
Journal ArticleDOI
Cation driven actuation for free standing PEDOT films prepared from propylene carbonate electrolytes containing TBACF3SO3
TL;DR: In this paper, a free standing PEDOT [poly(3,4-ethylenedioxythiophene] films were generated in tetrabutylammonium trifluromethanesulfonate (TBACF3SO3) electrolytes by potentiostatic (EP 1.05-V vs. Ag wire) electropolymerisation in propylene carbonate and methyl benzoate.
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Polymeric actuators: Solvents tune reaction-driven cation to reaction-driven anion actuation
Rudolf Kiefer,Jose G. Martinez,Arko Kesküla,Gholamreza Anbarjafari,Alvo Aabloo,Toribio F. Otero +5 more
TL;DR: In this paper, the authors used a parallel video-recording of the angular displacements in four electrolytes with different solvents to identify solvent influence on the driving reactions.