Mathias Dietzel

 

Scientific Collaborator

 

Institute of Nano- and Microfluidics

Center of Smart Interfaces

Technical University Darmstadt

 

 

 

 

 

A: Alarich-Weiss-Straße 10, L2|06 111, 64287 Darmstadt, GER

T: +49 6151 16-2839

E: dietzel (at) csi.tu-darmstadt (dot) de (public key)

 

 

 | Research | Publications | Short Bio | Interests || Archive || vCard ||


Current Research:

 

      | Communicating Self-Organizing Systems | Electrokinetic Free Surface Flows | Open Bachelor/Master/PhD-theses |

 

   

Communicating Self-Organizing Systems

 

It is known that the only inherent function of single self-organizing systems such as liquid films self-patterning when exposed to interfacial stresses is the maintenance of their order without serving a superordinate purpose. On the other hand, assemblies of self-organizing units as for instance found in organs fulfill sophisticated tasks. We investigate at hand of multi-layer liquid films to what extent the communication between single self-organizing systems might explain the fascinating self-emergence of complex function found in Nature.

 

Electrokinetic Free Surface Flows

 

Free charges in an electrolyte are non-uniformly distributed in vicinity of interfaces with a surface charge due to a screening effect. This is used in pressure-driven flow through small capillary channels, advectively separating charges and converting hydrostatic into electric energy. Such systems are commonly spoiled by the circumstance that the excess ions accumulate in direct vicinity of fixed walls where frictional losses are highest. As an alternative we consider flows where these excess ions screen also charges at free surfaces not subject to the no-slip-condition. Our goal is to drive these flows thermally to directly convert thermal into electric energy.

 

Open Bachelor/Master/PhD-theses

 

Currently I offer the following theses. Please contact me if you are interested.

 

     Bachelor/Master:

     :: Electric charge advection driven by a temperature-dependent surface tension (exp.) (link: PDF)

     :: Leidenfrost drop on liquid film (exp.) (link: PDF)

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Short Bio:

 

Currently, I am a group leader (Synergistic Fluid Technology) at the Institute of Nano- & Microfluidics, which is led by Prof. Steffen Hardt. The institute is part of the Center of Smart Interfaces at TU Darmstadt. I am addressing hydrodynamic systems undergoing coupled self-organization, electrokinetic phenomena in thermally driven free surface flows as well as non-isothermal electrokinetic flows in confined geometry.

 

Before I was a postdoctoral scholar at the Laboratory of Interfacial & Small Scale Transport led by Prof. Sandra M. Troian at Caltech from Oct 2007 - May 2010, working on the thermally induced patterning of thin polymer films. Prior to this from Oct 2006 - Oct 2007, I joined the DARPA Center of Optofluidic Integration hosted at Caltech, conducting postdoctoral research on optical applications of free surface flows as well as on bistable capillary systems at the Optical Information Processing Group led by Prof. Demetri Psaltis. My Ph.D. research (2001 - 2005) in the Laboratory of Thermodynamics in Emerging Technologies/ETH Zurich under the guidance of Prof. Dimos Poulikakos dealt with the modeling and simulation of the deposition and curing of nanoparticle inks. I stayed another year in the same lab as a post-doc investigating vapor formation phenomena around heated nanoparticles. I finished my diploma studies of mechanical engineering, majoring in thermal engineering (tutored by Prof. Karl-Friedrich Knoche) at RWTH Aachen University in 2000. During my studies, I spent one year as a student scholar at UC Davis conducting heat transfer research with thermochromic liquid crystals under the guidance of Prof. James Baughn as well as another year as an engineering assistant at FEV Engine Technology in Auburn Hills, MI, performing benchmarking tests of truck engines and experimental boxer engines.

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Interests:

 

My main interests encompasses the development, design and improvement of engineering systems relevant to micro- and nano-fabrication, small-scale energy conversions, communication and information processing as well as human-machine interaction. I study physical effects related to

 

  :: Free surface micro- and thermofluidics

  :: Advanced sustainable energy systems

  :: Optofluidics

  :: Self-organizing, evolutionary complexity

 

I am is also interested in the open innovation paradigm as well as in smart urban mobility. (link)

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Publications:

 

     | Book articles | Journal articles | Acknowledged Contributions | Talks | Archival articles |

 

   

Book articles


M. Dietzel,

Interaction Between a Moving Contact Line and Thermocapillarity in Pure Liquids, Melts and Nanoparticle Suspension Droplets,

Chapter 10 in Surface Tension-Driven Flows and Applications edited by R. Savino,

Research Signpost, Kerala, ISBN 81-308-0065-9, 2006

 

 

Peer reviewed journal articles

 

M. Vécsei, M. Dietzel and S. Hardt,

Coupled self-organization: Thermal interaction between two liquid films undergoing long-wavelength instabilities,

Physical Review E 89, 053018, 2014

(DOI) (preprint: arXiv)

 

M. Dietzel and S. M. Troian,

Mechanism for Spontaneous Growth of Nanopillar Arrays in Ultrathin Films Subject to a Thermal Gradient,

Journal of Applied Physics, 108, 074308, 2010

(DOI) (preprint: arXiv)

 

M. Dietzel and S. M. Troian,

Formation of Nanopillar Arrays in Ultrathin Viscous Films: The Critical Role of Thermocapillary Stresses,

Physical Review Letters, 103, 074510, 2009

(DOI) (preprint: arXiv)

The work was featured in a Caltech press release (->).

 

M. Fischer, M. Dietzel and D. Poulikakos,

Thermally Enhanced Solubility for the Shrinking of a Nanoink Droplet in a Surrounding Liquid,

Intl. Journal of Heat and Mass Transfer, 52, 222-231, 2009

(DOI)

 

M. Dietzel, N. R. Bieri and D. Poulikakos,

Dropwise deposition and wetting of nanoparticle suspensions,

Intl. Journal of Heat and Fluid Flow, 29 (1), 250-262, 2008

(DOI)

 

M. Dietzel and D. Poulikakos,

On Vapor Formation around Heated Nanoparticles in Liquids,

Intl. Journal of Heat and Mass Transfer, 50, 2246-2259, 2007

(DOI)

 

M. Dietzel and D. Poulikakos,

Laser induced motion in nanoparticle suspension droplets on a surface

Physics of Fluids, 17, 102106, 2005

(DOI)

 

M. Dietzel, S. Haferl, Y. Ventikos and D. Poulikakos,

Marangoni and Variable Viscosity Phenomena in Picoliter Size Solder Droplet Deposition,

Journal of Heat Transfer-Transactions of the ASME, 125, 365-376, 2003

(DOI)

 

J. W. Baughn, M. Dietzel and J. E. Mayhew,

Adiabatic effectiveness and nusselt number distribution on a flat surface with an oblique impinging jet,

Journal of Heat Transfer-Transactions of the ASME, 122, 427-427, 2000

(DOI)

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Acknowledged contributions in peer reviewed journal articles

 

G. Romera-Guereca, T. Y. Choi and D. Poulikakos,

Explosive vaporization and microbubble oscillations on submicron width thin film strip heaters,

Intl. Journal of Heat and Mass Transfer, 51, 4427-4438, 2008

(DOI)

 

N.R. Bieri, J. Chung, D. Poulikakos and C. P. Grigoropoulos,

An experimental investigation of microresistor laser printing with gold nanoparticle-laden inks,

Applied Physics A-Materials Science & Processing, 80, 1485–1495, 2005

(DOI)

 

 

Talks including peer reviewed articles

 

M. Dietzel*, S. Hardt,

Streaming potential of an electrolyte in a microchannel with a lateral temperature gradient,

3rd Conf. on Microfluidics (µFlu12-108), Heidelberg, Germany, 2012

(PDF)

 

M. Dietzel* and Sandra M. Troian,

Thermocapillary Patterning of Nanoscale Polymer Films

MRS Spring Meeting, San Francisco, CA, U.S.A., 2009

(PDF)

 

N.R. Bieri*, M. Dietzel and D. Poulikakos,

Thermally Actuated Deformation of a Capillary Bridge And Possible Technical Applications

6th World Conference on experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Matsushima, Miyagi, Japan, 2005

(PDF)

 

M. Dietzel* and D. Poulikakos,

Marangoni and temperature dependent wetting phenomena in picoliter size solder droplet deposition,

9th Intl. Conference on Liquid Atomization and Spray Systems - ICLASS 2003, Sorrento, Italy, 2003

(PDF)
 

M. Dietzel* S. Haferl, Y. Ventikos and D. Poulikakos,

Marangoni and Variable Viscosity Phenomena in Picoliter Size Solder Droplet Deposition,

Proceedings of IMECE 2002, ASME International Mechanical Engineering Congress & Exposition, New Orleans, LA, U.S.A., 2002

(PDF)

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Talks

 

V. Vécsei*, M. Dietzel and S. Hardt,

Thermal coupling between two liquid films undergoing long-wavelength instabilities

7th Conference of the International Marangoni Association, Vienna, Austria, 2014

(Abstract)

 

M. Dietzel* and S. Hardt,

Field-enhanced electrokinetic charge separation induced by thermocapillarity-driven flow in a liquid film

63rd Annual Meeting of the APS Division of Fluid Dynamics, Baltimore,MD, U.S.A., 2011

(Abstract)

 

M. Dietzel*, E. J. McLeod and S. M. Troian,

Modulated Interface Lithography (MIL)

MRS Spring Meeting, San Francisco, CA, U.S.A., 2010

(Abstract)

 

M. Dietzel*, Y. Liu and S. M. Troian,

Directed Self-Assembly of 3D Polymeric Nanostructures by Thermal Field Gradients

MRS Spring Meeting, San Francisco, CA, U.S.A., 2010

(Abstract)

 

M. Dietzel* and S. M. Troian,

Interface Modulation Lithography (IML)

APS March Meeting, Portland, OR, U.S.A., 2010

(Abstract)

 

M. Dietzel* and S. M. Troian,

Critical Role of Thermocapillary Stresses in Nanopillar Formation in Ultrathin Films

APS March Meeting, Portland, OR, U.S.A., 2010

(Abstract)

 

M. Dietzel* and S. M. Troian,

Modulated Surface Stress Lithography (MS2L)

MRS Fall Meeting, Boston, MA, U.S.A., 2009

(Abstract)

 

M. Dietzel* and S. M. Troian,

Thermal Viscosity Effects in Deforming Polymer Nanofilms

62nd Annual Meeting of the APS Division of Fluid Dynamics, Minneapolis,MN, U.S.A., 2009

(Abstract)

 

M. Dietzel* and S. M. Troian,

Pillar Instability in Nanofilms due to Thermocapillary Stresses

62nd Annual Meeting of the APS Division of Fluid Dynamics, Minneapolis, MN, U.S.A., 2009

(Abstract)

 

M. Dietzel* and S. M. Troian,

Thermocapillary Lithographic Patterning of Nanoscale Polymer Films: Analysis, Control and Application

3rd Southern California Symposium on Fluid Physics, San Diego, CA, U.S.A., 2009

(Abstract)

 

M. Dietzel* and S. M. Troian,

Thermocapillary Lithography: Large Area Patterning of Nanoscale Polymer Films

61st Annual Meeting of the APS Division of Fluid Dynamics, San Antonio, TX, U.S.A., 2008

(Abstract)

 

S. M. Troian* and M. Dietzel,

Mechanism Leading to Formation of Periodic Nanopillar Arrays in Confined Ultrathin Polymer Films

61st Annual Meeting of the APS Division of Fluid Dynamics, San Antonio, TX, U.S.A., 2008

(Abstract)

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Archival articles

 

M. Dietzel,

Modeling of the Surface Deposition and Thermal Treatment of Plain Liquids, Melts and Nanoparticle Inks,

Ph.D. thesis, ETH Zurich, Zurich, Switzerland, 2005

(PDF)

 

M. Dietzel,

Modeling and Simulation of a Model Rocket Driven by Pressurized Water as a Function of Start Parameter Variations,

Research report, Zurich, Switzerland, 2000

(PDF)

 

M. Dietzel,

Thermodynamic Investigation and Optimization of a 4-Stroke HSDI Methanol Fueled Boxer Engine With Glow Plug Ignition,

Diploma thesis, FEV Engine Technology, Auburn Hills, MI, U.S.A., 2000

 

M. Dietzel,

Adiabatic Effectiveness and Heat Transfer from a flat Plate to a heated Oblique Impinging Jet,

Student research report, UC Davis, CA, U.S.A., 1999

(PDF)

 

M. Dietzel,
Rechnergestützte Simulation der Verbrennungsvorgänge eines luftgestuften 100 kW-Ölbrenners - qualitativer Vergleich verschiedener Simulationsstrategien zur Verifizierung der in der Praxis ermittelten Werte,

Student research report, RWTH Aachen University, Aachen, Germany, 1998

(PDF, in German)

 

 

* - presenter

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