Tobias Metz
University of Freiburg
18 Papers
71 Citations
Tobias Metz is an academic researcher from University of Freiburg. The author has contributed to research in topics: Capillary action & Proton exchange membrane fuel cell. The author has an hindex of 10, co-authored 18 publications.
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Papers
Centrifugo-pneumatic valve for metering of highly wetting liquids on centrifugal microfluidic platforms.
Daniel Mark,Tobias Metz,Stefan Haeberle,S. Lutz,Jens Ducrée,Roland Zengerle,Felix von Stetten +6 more
TL;DR: A new type of passive valve for centrifugal microfluidic platforms that opens under defined conditions at high centrifugal frequencies at which the interface between liquid and air becomes unstable and enables a phase exchange, forwarding the liquid.
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A potentially implantable glucose fuel cell with Raney-platinum film electrodes for improved hydrolytic and oxidative stability
TL;DR: In this paper, an improved abiotically catalyzed glucose fuel cell, intended as energy harvesting tissue implantable power supply for medical implants, was constructed from a Raney-platinum film cathode deposited on a silicon substrate with micro-machined feedholes for glucose permeability.
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Passive water removal in fuel cells by capillary droplet actuation
TL;DR: In this article, a microstructured flow field for passive water management in proton exchange membrane fuel cells (PEMFC) is presented based on the transport of liquid water droplets by capillary forces.
Capillary-driven pumping for passive degassing and fuel supply in direct methanol fuel cells
Nils Paust,Christian Litterst,Tobias Metz,Michael J. Eck,Christoph Ziegler,Roland Zengerle,Peter Koltay +6 more
TL;DR: In this article, the authors present a new concept of creating and using capillary pressure gradients for passive degassing and passive methanol supply in direct methanoline fuel cells (DMFCs).
Capillary driven movement of gas bubbles in tapered structures
TL;DR: In this article, a model for the capillary driven movement of gas bubbles confined in tapered channel configurations is presented, which can be used to transport growing gas bubbles in micro fluidic systems in a passive way, without external actuation.