Ruediger Schweiss

SGL Carbon (Germany)

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Carsten Werner

Leibniz Institute of Polymer Research

Wolfgang Knoll

Austrian Institute of Technology

Nyunt Wai

Nanyang Technological University

Arjun Bhattarai

Singapore Institute of Technology

Günther G. Scherer

Paul Scherrer Institute

Purna C. Ghimire

Nanyang Technological University

Joseph D. Fairweather

General Motors (Poland)

Rangachary Mukundan

Lawrence Berkeley National Laboratory

Dusan Spernjak

Los Alamos National Laboratory

Christian Meiser

SGL Carbon (Germany)

Cooperative Institutions

Leibniz Institute of Polymer Research

Los Alamos National Laboratory

Leitat Technological Center

Leibniz Association

SGL Carbon (Germany)

Material Measurement Laboratory

National Institute of Standards and Technology

Nanyang Technological University

Siemens (Germany)

Physical Measurement Laboratory

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The importance of carbon materials in micro-porous layer in gas diffusion layers for proton exchange membrane fuel cells

Carbon (2015)

Ruediger Schweiss Oswin Öttinger

Acetylene

Carbon fibers

Gaseous diffusion

10.1016/j.carbon.2015.07.017

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Citations (3)

Electrochemical surface plasmon spectroscopy—Recent developments and applications

Electrochimica Acta (2006)

Nan Zhang Ruediger Schweiss Yun Zong Wolfgang Knoll

Quartz Crystal Microbalance

10.1016/j.electacta.2006.10.060

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Citations (49)

Capacitive Study of Self-Assembled Monolayers: Surface Charge Effects and Kinetics of Surfactant Adsorption

Ruediger Schweiss Vladimir M. Mirsky Otto S. Wolfbeis

Self-assembled monolayer

Surface charge

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Investigation of Reactant Conversion in the Vanadium Redox Flow Battery Using Spatially Resolved State of Charge Mapping

Batteries (2019)

Purna C. Ghimire Arjun Bhattarai Ruediger Schweiss Günther G. Scherer Nyunt Wai

Segmented cells enable real time visualization of the flow distribution in vanadium redox flow batteries by local current or voltage mapping. The lateral flow of current within thick porous electrodes, however, impairs the local resolution of the detected signals. In this study, the open circuit voltage immediately after the cessation of charge/discharge is used for the mapping of reactant conversion. This quantity is not hampered by lateral flow of current and can be conveniently transformed to the corresponding state of charge. The difference between theoretically calculated and experimentally determined conversion (change in the state of charge) across the electrode is used to determine local variations in conversion efficiency. The method is validated by systematic experiments using electrodes with different modifications, varying current densities and flow configurations. The procedure and the interpretation are simple and scalable to any size of flow cell.

Flow battery

State of charge

10.3390/batteries5010002

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Citations (7)

Capacitive detection in thin film chemical sensors and biosensors

V. Řeháček I. Νovotný V. Tvarožek Michael Riepl Thomas Hirsch

Thin film electrode chips on silicon substrate have been realized and utilized in development of different chemo- and biosensors. These affinity sensors are based on capacitive transducing and their general structure is thin film Au/alkanethiol/receptor. Several applications of thin film gold electrodes in capacitive sensors are presented.

10.1109/asdam.1998.730212

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Citations (1)

Validation of 1D porous electrode theory using steady-State measurements of flooded electrodes at variable electrolyte compositions

Chemical Engineering Science (2020)

Ruediger Schweiss

10.1016/j.ces.2020.115841

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Citations (8)

Capacitive Study of Self-Assembled Alkylthiol Monolayers: Surface Charge Effects and Kinetics of Surfactants Adsorption

Materials science forum (1998)

Ruediger Schweiss Vladimir M. Mirsky Ottow S. Wolfbeis

Adsorption and desorption kinetics of different surfactants onto/from the surface of gold electrodes covered by self-assembled monolayers of 1-octadecanethiol were monitored in aqueous solutions by means of capacitive measurements. Effects of temperature, surfactant concentration and of the surfactants hydrophobic chain length were studied. A linear dependence between the initial slope of the adsorption kinetics and surfactant concentration was observed. This effect can be used for analytical determination of surfactants. The adsorption kinetics suggests a fractal geometry of the surfactants adsorption. The influence of pH and ionic strength on the capacitance of gold electrodes covered by ω-terminated alkylthiols was studied. The curves obtained depend on the ionic strength and have minima near the pK of the terminal group.

Self-assembled monolayer

10.4028/www.scientific.net/msf.287-288.427

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Citations (4)

Self-assembled monolayers with different terminating groups as model substrates for cell adhesion studies

Biomaterials (2003)

Nathalie Faucheux Ruediger Schweiss Karola Lützow Carsten Werner Thomas Groth

Protein Adsorption

Self-assembled monolayer

Silanization

10.1016/j.biomaterials.2003.09.069

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