My research is concerning in general questions in physico-chemical and bio-chemical processes from a physical point of view - special interest in this context lies on the question what are the properties and conditions for life (details in the interests section).
Self-Organisation of a Dichloromethane Droplet on the Surface of a Surfactant-containing Aqueous Solution
A Chemo-Hydrodynamical Effect in a closed Ferroin-catalyzed Belousov Zhabotinsky Oscillator
A Biophysical Model on the Biogenesis of Lipid Droplets/a>
Self-Organisation of a Dichloromethane Droplet on the Surface of a Tensio-actif Containing Aqueous Solution
At the moment I am investiging for my PhD the complex dissolution process of a dichloromethane droplet in a surfactant-containing aqueous solution.
The motility of an solvant drop on the surface of an aqueous solution can be induced and controlled by the mass-transfer of the surfactants contained in the aqueous solution. But not only - it depends also on the solubility and volatility of the solvent drop.
The work consists firstly in the detailed investigation and understanding of this phenomena and secondly in a possible application of this phenomena to spontaneously form polymers.
Dynamic of the dichloromethane droplet on the surface of a surfactant-containing containing aqueous solution (CTAB solution). The dichloromethane droplet shows three distinct forms, which are controlled by the concentration of the surfactant in the aqueous solution (corresponding videos here)
P. C. Ohara and William M. Gelbart Langmuir, 14, 3418 (1998)
Y. Lu and S.C. Chen, Adv. Drug Deliv. Rev. 56, 1621 (2004)
Y. Sumino, H. Kitahata, Y. Shinohara, N. L. Yamada, and H. Seto, Langmuir, 28, 3378 (2012)
M. Maillard, L. Motte, and M-P Pileni, Adv. Mater., 13, 200, (2001)
S. Liu, R. Deng, W. Li, and J. Zhu, Adv. Funct. Mater. 22, 1692, (2012)
J. R. Friends, L. Y. Yeo, D. R. Arifin and A. Mechler, Nanotechnology, 19, 145301, (2008)
V. Pimienta, M. Brost, N. Kovalchuk, S. Bresch and O. Steinbock, Angew. Chem. Int. Ed 50, 10728 (2011)
K. Eckert, M. Acker, R. Tadmouri, V. Pimienta, V., Chaos, 22, 037112 (2012)
A Chemo-Hydrodynamical Effect in a Closed
Ferroin-catalysed Belousov Zhabotinsky Oscillator
The recently by us discovered effect, which is induced by a limited stirring phase, is the topic of this research (details at www.ilsr.at/research.htm). To our current understanding this effect arises due to the complex interplay between the chemical reactions and hydrodynamics, specially diffusion and convection.
Our current research results were presented at the European Conference on Complex Systems (ECCS'13) in Barcelona and also at the Workshop on Patterns and Hydrodynamic Instabilities in Reactive Systems in Brussels. We found that the stirring time can be understood as bifurcation parameter (details see figure below).
The figure shows the effect of a limited stirring phase in a closed
ferroin-catalysed Belousov Zhabotinsky reqction system. C: No stirring at all. B: Stirring for 30 min.
A: Stirring for 60 min (all measurements where carried out at 30°C)
Florian Wodlei, Mihnea R. Hristea
Effect of Limited Stirring on the Belousov Zhabotinsky Reaction
Proceedings of the European Conference on Complex Systems 2012 (September 2013) | ISBN: 978-3-319-00394-8
Marchettini, N.; Budroni, M. A.; Rossi, F.; Masia, M.; Liverid, M. L. T. & Rusticie, M.
Role of the reagents consumption in the chaotic dynamics of the Belousov–Zhabotinsky oscillator in closed unstirred reactors
Physical Chemistry Chemical Physics, 2010, 12, 11062–11069 11062–11069
Rossi, F.; Budroni, M. A.; Marchettini, N.; Cutietta, L.; Rustici, M. & Liveri, M. L. T.
Chaotic dynamics in an unstirred ferroin catalyzed Belousov-Zhabotinsky reaction
Chemical Physics Letters, 2009, 480, 322-326
Rustici, M.; Branca, M.; Caravati, C. & Marchettini, N.
Evidence of a chaotic transient in a closed unstirred cerium catalyzed Belousov-Zhabotinsky system
Chemical Physics Letters, 1996, 263, 429-434
Б. П. Белоусов (B. P. Belousov)
Периодически действующая реакция и ее механизм. (the periodic reaction and its mechanism)
Сборник рефератов по радиационной медицине за 1958 г. Медгиз, 1959 (re-publication of the original article in Химия и жизнь №7 за 1982)
A. M. Жаботинский (A. M. Zhabotinsky)
Периодический процесс окисления малоновой кислоты растворе (исследование кинетики реакции Белоусова) (The periodical evolution of the oxidation of malonic acid (research on the kinetics of Belousov's reaction))
Биофизика, 9:306–311, 1964
A Biophysical Model of the Biogenesis of Lipid Droplets
For my Diploma thesis I was investigating the biogenesis of lipid droplets. Lipid droplets are dynamic organelles that are found in nearly all mammalian cells, and serve a particularly vital function in adipocytes where they hold the body’s major energy reserves as triacylglycerols.
We developped an elastomechanical model and where also investigating the influence of the phospholipid composition of the biological membrane on the biogenesis of lipid droplets. Details on the model suggested by the biologist in Sally Martin and Robert G. Parton, Nature Reviews Molecular Cell Biology 7, 373-378, 2006
Lipid droplets: a unified view of a dynamic organelle
Sally Martin and Robert G. Parton
Nature Reviews Molecular Cell Biology 7, 373-378 (May 2006)
Sally Martin and Robert G. Parton, Nature Reviews Molecular Cell Biology 7, 373-378, 2006
J. Zanghellini, F. Wodlei and H.H. von Grünberg
Phospholipid demixing and the birth of a lipid droplet
Journal of Theoretical Biology, Volume 264, Issue 3, 7 June 2010, Pages 952-961
Jürgen Zhangellini, David Ruckerbauer, Florian Wodlei, Hans Hennig von Grünberg, Christian Jungreuthmayer
phospholipid demixing: molecular interpretation of lipid droplet biogenesis
Advances in Planar Lipid Bilayer and Liposomes, Vol. 11 (October 2010) | ISBN: 978-0-12-381013-7