Prof. Rudolf Kiefer Profile

Prof. Rudolf Kiefer

Professor at Ton Duc Thang Univ

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Author

Publications (24)

Proceedings Article | 27 March 2018 Paper

Poly-3,4-ethylenedixoythiophene on carbide-derived carbon trilayer: combined linear actuation characterization

Alo Kivilo, Zane Zondaka, Sunjai Nakshatharan, Kadi-Anne Küppar, Tarmo Tamm, Rudolf Kiefer

Proceedings Volume 10594, 105942L (2018) https://doi.org/10.1117/12.2300133

KEYWORDS: Actuators, Electrodes, Polymers, Oxidation, Carbon, Scanning electron microscopy, Carbonates, Ions, Capacitance

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Proceedings Article | 27 March 2018 Paper

Solvent change in polymerization influence linear actuation of polypyrrole carbide-derived carbon films

Zane Zondaka, Tarmo Tamm, Alvo Aabloo, Rudolf Kiefer

Proceedings Volume 10594, 105942H (2018) https://doi.org/10.1117/12.2300146

KEYWORDS: Polymerization, Ions, Diffusion, Polymers, Carbon, Scanning electron microscopy, Actuators, Oxidation, Particles

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Proceedings Article | 27 March 2018 Presentation + Paper

Polypyrrole with polyethylene oxide: linear actuation in organic and aqueous electrolytes

Roshan Khadka, Zane Zondaka, Jadranka Travas-Sejdic, Tarmo Tamm, Rudolf Kiefer

Proceedings Volume 10594, 105941W (2018) https://doi.org/10.1117/12.2300145

KEYWORDS: Diffusion, Oxidation, Electrodes, Polymers, Lithium, Actuators, Ions, Oxides, Scanning electron microscopy

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Proceedings Article | 15 April 2016 Paper

Embedded Carbide-derived Carbon (CDC) particles in polypyrrole (PPy) for linear actuator

Zane Zondaka, Robert Valner, Alvo Aabloo, Tarmo Tamm, Rudolf Kiefer

Proceedings Volume 9798, 97981H (2016) https://doi.org/10.1117/12.2218674

KEYWORDS: Actuators, Carbon, Polymeric actuators, Polymers, Particles, Scanning electron microscopy, Electrodes, Oxidation, Sensors, Composites

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Proceedings Article | 1 April 2015 Paper

A passive autofocus system by using standard deviation of the image on a liquid lens

Pejman Rasti, Arko Kesküla, Henry Haus, Helmut Schlaak, Gholamreza Anbarjafari, Alvo Aabloo, Rudolf Kiefer

Proceedings Volume 9430, 94301Q (2015) https://doi.org/10.1117/12.2084198

KEYWORDS: Liquid lenses, Liquids, Actuators, Cameras, Dielectric elastomer actuators, Dielectrics, Ultrasonics, Infrared radiation, Imaging systems, Cell phones

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Proceedings Article | 1 April 2015 Paper

Solvent and electrolyte effects in PPyDBS free standing films

Rudolf Kiefer, Jose Martinez, Toribio Otero, Arko Kesküla, Friedrich Kaasik, Madis Harjo, Robert Valner, Vishwaja Vaddepally, Anna-Liisa Peikolainen, Alvo Aabloo

Proceedings Volume 9430, 94301C (2015) https://doi.org/10.1117/12.2084195

KEYWORDS: Electrodes, Scanning electron microscopy, Actuators, Ions, Polymers, Carbonates, Polymerization, Polymer thin films, Sulfur, Oxidation

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Proceedings Article | 8 March 2014 Paper

Electrochemomechanical deformation (ECMD) of PPyDBS in free standing film formation and trilayer designs

Nihan Aydemir, Tarmo Tamm, Jadranka Travas-Sejdic, Paul Kilmartin, Alvo Aabloo, Rudolf Kiefer

Proceedings Volume 9056, 905631 (2014) https://doi.org/10.1117/12.2044702

KEYWORDS: Electrodes, Actuators, Ferroelectric polymers, Polymers, Carbonates, Polymerization, Microscopy, Polymeric actuators, Scanning electron microscopy, Electronics

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Proceedings Article | 8 March 2014 Paper

Autofocus fluid lens device construction and implementation of modified ionic polymer metal composite (IPMC) membrane actuators

Rudolf Kiefer, Harti Kiveste, Andres Punning, Arko Kesküla, Tõnis Lulla, Alvo Aabloo

Proceedings Volume 9056, 905630 (2014) https://doi.org/10.1117/12.2044656

KEYWORDS: Actuators, Polymers, Liquids, Polymeric actuators, Electrodes, Liquid lenses, Metals, Composites, Ions, Platinum

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Proceedings Article | 8 March 2014 Paper

Carbide-derived carbon (CDC) linear actuator properties in combination with conducting polymers

Rudolf Kiefer, Nihan Aydemir, Janno Torop, Paul Kilmartin, Tarmo Tamm, Friedrich Kaasik, Arko Kesküla, Jadranka Travas-Sejdic, Alvo Aabloo

Proceedings Volume 9056, 90561V (2014) https://doi.org/10.1117/12.2044653

KEYWORDS: Actuators, Polymers, Scanning electron microscopy, Electrodes, Carbon, Particles, Ions, Capacitors, Magnesium, Sulfur

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Proceedings Article | 8 March 2014 Paper

In situ measurements with CPC micro-actuators using SEM

Friedrich Kaasik, Indrek Must, Enn Lust, Meelis Jürgens, Volker Presser, Andres Punning, Rauno Temmer, Rudolf Kiefer, Alvo Aabloo

Proceedings Volume 9056, 90562B (2014) https://doi.org/10.1117/12.2045136

KEYWORDS: Actuators, Compound parabolic concentrators, Electrodes, Scanning electron microscopy, Humidity, Carbon, Polymers, In situ metrology, Composites, Liquids

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Proceedings Article | 9 April 2013 Paper

PEDOT/TBACF3SO3 bending actuators based on a PEDOT-PEDOT sandwich complex

Jadranka Trava-Sejdic, Tarmo Tamm, Paul Kilmartin, Rauno Temmer, Alvo Aabloo, Rudolf Kiefer

Proceedings Volume 8687, 86872Z (2013) https://doi.org/10.1117/12.2009007

KEYWORDS: Polymers, Electrodes, Actuators, Polymerization, Ions, Polymer thin films, Scanning electron microscopy, Polymeric actuators, Nitrogen, Oxidation

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Proceedings Article | 10 April 2008 Paper

The application of polypyrrole trilayer actuators in microfluidics and robotics

Rudolf Kiefer, Xerxes Mandviwalla, Rosalind Archer, Sungkono Surya Tjahyono, Han Wang, Bruce MacDonald, Graham Bowmaker, Paul Kilmartin, Jadranka Travas-Sejdic

Proceedings Volume 6927, 69271E (2008) https://doi.org/10.1117/12.776060

KEYWORDS: Actuators, Polymers, Robotics, Polymeric actuators, Polymer thin films, Ferroelectric polymers, Electrodes, Microfluidics, Electronics, Ions

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Proceedings Article | 10 April 2008 Paper

Electrochemomechanical behaviour of free standing PEDOT films in organic and aqueous electrolytes

Rudolf Kiefer, Paul Kilmartin, Graham Bowmaker, Jadranka Travas-Sejdic

Proceedings Volume 6927, 692720 (2008) https://doi.org/10.1117/12.776047

KEYWORDS: Polymers, Carbonates, Actuators, Electrodes, Polymerization, Scanning electron microscopy, Polymer thin films, Polymeric actuators, Nitrogen, Oxidation

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Proceedings Article | 4 April 2007 Paper

Mixed-ion linear actuation of PPy and PEDOT in propylene carbonate-triflate electrolytes

Rudolf Kiefer, Paul Kilmartin, Graham Bowmaker, Ralph Cooney, Jadranka Travas-Sejdic

Proceedings Volume 6524, 65240U (2007) https://doi.org/10.1117/12.715089

KEYWORDS: Polymers, Polymer thin films, Polymerization, Electrodes, Ions, Scanning electron microscopy, Actuators, Polymeric actuators, Carbonates, Oxidation

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Proceedings Article | 15 March 2006 Paper

Polypyrrole actuators for micropump applications

Jadranka Travas-Sejdic, Rudolf Kiefer, Sreejith Valiavalappil, Kwong-chi Li, Paul Kilmartin

Proceedings Volume 6168, 61682I (2006) https://doi.org/10.1117/12.663948

KEYWORDS: Polymers, Electrodes, Actuators, Carbonates, Platinum, Gold, Atomic force microscopy, Polymer thin films, Sodium, Oxidation

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Proceedings Article | 22 May 2002 Paper

Physics and applications of III-Sb-based type-I QW diode lasers

Carmen Mermelstein, M. Rattunde, J. Schmitz, Rudolf Kiefer, Martin Walther, Joachim Wagner

Proceedings Volume 4651, (2002) https://doi.org/10.1117/12.467945

KEYWORDS: Semiconductor lasers, Quantum wells, Aluminum, Laser damage threshold, Continuous wave operation, Temperature metrology, Methane, Absorption, Internal quantum efficiency, Waveguides

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Proceedings Article | 16 April 2002 Paper

High-power high-brightness ridge-waveguide tapered diode lasers at 940 nm

Marc Kelemen, Franz Rinner, Joseph Rogg, Nicolas Wiedmann, Rudolf Kiefer, Martin Walther, Michael Mikulla, Guenter Weimann

Proceedings Volume 4648, (2002) https://doi.org/10.1117/12.462644

KEYWORDS: Semiconductor lasers, High power lasers, Diffraction, Optical amplifiers, Optical pumping, Fiber amplifiers, Quantum wells, Mirrors, Reliability, Continuous wave operation

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Proceedings Article | 19 October 2001 Paper

High-power 980-nm semiconductor lasers by MBE

Michael Mikulla, Marc Kelemen, Martin Walther, Rudolf Kiefer, R. Moritz, Guenter Weimann

Proceedings Volume 4580, (2001) https://doi.org/10.1117/12.444955

KEYWORDS: Semiconductor lasers, High power lasers, Optical amplifiers, Reliability, Single mode fibers, Fiber couplers, Diffraction, Aluminum, Cladding, Diodes

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Proceedings Article | 9 July 2001 Paper

Improved high-temperature operation of InGaAs/AlGaAs LOC SQW diode lasers by incorporation of short-period superlattice quantum-well barriers

Nicolas Wiedmann, Juergen Jandeleit, Michael Mikulla, Rudolf Kiefer, G. Bihlmann, Reinhart Poprawe, Guenter Weimann

Proceedings Volume 4283, (2001) https://doi.org/10.1117/12.432572

KEYWORDS: Superlattices, Lab on a chip, Quantum wells, Electrons, Quantum efficiency, Aluminum, Temperature metrology, Gallium, Internal quantum efficiency, Resistance

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Proceedings Article | 12 June 2001 Paper

Optoelectronic properties of photodiodes for the mid-and far-infrared based on the InAs/GaSb/AlSb materials family

Frank Fuchs, L. Buerkle, R. Hamid, N. Herres, Wilfried Pletschen, R. Sah, Rudolf Kiefer, J. Schmitz

Proceedings Volume 4288, (2001) https://doi.org/10.1117/12.429404

KEYWORDS: Diodes, Stereolithography, Indium arsenide, Laser sintering, Gallium antimonide, Photodiodes, Doping, Staring arrays, Mid-IR, Binary data

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Proceedings Article | 6 June 2001 Paper

High-brightness laser diodes using angular filtering by total reflection

Joseph Rogg, Konstantin Boucke, Marc Kelemen, Franz Rinner, Wilfried Pletschen, Rudolf Kiefer, Martin Walther, Michael Mikulla, Reinhart Poprawe, Guenter Weimann

Proceedings Volume 4287, (2001) https://doi.org/10.1117/12.429801

KEYWORDS: Semiconductor lasers, Mirrors, Optical filters, Near field, High power lasers, Reflectivity, Diffusion, Refractive index, Reflection, Solids

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Proceedings Article | 29 March 2000 Paper

267-W cw AlGaAs/GaInAs diode laser bars

Juergen Braunstein, Michael Mikulla, Rudolf Kiefer, Martin Walther, Juergen Jandeleit, Wolfgang Brandenburg, Peter Loosen, Reinhart Poprawe, Guenter Weimann

Proceedings Volume 3945, (2000) https://doi.org/10.1117/12.380551

KEYWORDS: Semiconductor lasers, High power lasers, Resistance, Sensors, Lab on a chip, Electro optics, Temperature metrology, Continuous wave operation, Copper

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Proceedings Article | 1 April 1999 Paper

High-power InAlGaAs laser diodes with high efficiency at 980 nm

Michael Mikulla, Alexis Schmitt, Martin Walther, Rudolf Kiefer, R. Moritz, Sabine Mueller, R. Sah, Juergen Braunstein, Guenter Weimann

Proceedings Volume 3628, (1999) https://doi.org/10.1117/12.344542

KEYWORDS: Semiconductor lasers, High power lasers, Diodes, Reliability, Broad area laser diodes, Continuous wave operation, Cladding, Aluminum, Quantum wells

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Proceedings Article | 7 April 1998 Paper

Improved beam quality for high-power tapered laser diodes with LMG (low-modal-gain) epitaxial layer structures

Michael Mikulla, Alexis Schmitt, Pierre Chazan, A. Wetzel, Martin Walther, Rudolf Kiefer, Wilfried Pletschen, Juergen Braunstein, Guenter Weimann

Proceedings Volume 3284, (1998) https://doi.org/10.1117/12.304433

KEYWORDS: Semiconductor lasers, Active optics, High power lasers, Oscillators, Diffraction, Hole burning spectroscopy, Continuous wave operation, Diodes, Optical simulations, Waveguides

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Showing 5 of 24 publications

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