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interface:index [2019-06-21 11:02]
Dominik Dworschak
interface:index [2019-10-04 15:47] (current)
Dominik Dworschak
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====== Recent work ====== ====== Recent work ======
 +===== Advanced Science: Flexible solid electrolytes interfaces for more efficient batteries =====
 +{{:interface:artboard_1.png?150 |SEI flexibility}}
 +The interfacial decomposition products forming the so‐called solid–electrolyte interphase (SEI) significantly determine the destiny of a Li‐ion battery. Ultimate knowledge of its detailed behavior and better control are required for higher rates, longer life‐time, and increased safety. Employing an electrochemical surface force apparatus, it is possible to control the growth and to investigate the mechanical properties of an SEI in a lithium‐ion battery environment. This new approach is here introduced on a gold model system and reveals a compressible film at all stages of SEI growth. The demonstrated methodology provides a unique tool for analyzing electrochemical battery interfaces, in particular in view of alternative electrolyte formulations and artificial interfaces. The article is freely available [[https://onlinelibrary.wiley.com/doi/full/10.1002/advs.201900190?af=R| from Advanced Science]]!
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 +\\
 +Read our press release here ([[https://www.physik.tuwien.ac.at/aktuelles/news_detail/article/10844/|german]])and see an [[https://www.krone.at/2016647/|interview (in german)]] of Prof. Valtiner on the topic of battery safety.
 +\\
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 +===== LANGMUIR: Interaction Profiles and Stability of Rigid and Polymer-Tethered Lipid Bilayer Models at Highly Charged and Highly Adhesive Contacts =====
 +{{:interface:2019_09_cover_art_langmuir.jpg?145 |Cover Langmuir}} Understanding interaction force versus distance profiles of supported lipid bilayers is relevant to a number of areas, which rely on these model systems, including, e.g., characterization of ligand/receptor interactions or bacterial adhesion. We recently tested the stability of novel supported lipid bilayer architectures using the surface forces apparatus (SFA) and atomic force microscopy (AFM), specifically self-assembled monolayers (SAMs) of hexadecanethiol and the polymer-tethered diphytanylglycerol-tetraethylene glycol-lipoid acid (DPhyTL) on smooth gold surfaces where tested as support. Detachment profiles from highly charged and highly adhesive contacts were characterized, and approach characteristics were fitted to DLVO models. We find increasing stability under highly adhesive loads, approaching the hydrophobic limit of the adhesive energy between the inner and outer layers these systems. In addition, we find that undulation characteristics during approach and separation closely mimics natural flexible membranes for DPhyTL anchored systems. The increased stability of the complex architectures on a gold support makes these model systems an ideal starting point for studying more complex strongly adhesive/interacting systems, including, for example, ligand/receptor interactions, biosensing interactions, or cell/surface interactions.
 +<clear>
===== FEATURED: Optimizing multiple beam interferometry in the surface forces apparatus: Novel optics, reflection mode modeling, metal layer thicknesses, birefringence, and rotation of anisotropic layers (open access article) ===== ===== FEATURED: Optimizing multiple beam interferometry in the surface forces apparatus: Novel optics, reflection mode modeling, metal layer thicknesses, birefringence, and rotation of anisotropic layers (open access article) =====
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====== Group news ====== ====== Group news ======
 +==== Drawing contest ====
 +{{:interface:drawing_contest.jpg?200 |}}
 +Our group organized a drawing contest open to anyone who came into the kitchen. Sixteen artists anonymously showcased their skills and a panel of experts <del>in physics</del> voted for their favorites. With the help of our friends from Computational Physics, who implemented a sophisticated vote-evaluating algorithm, we can now name a winner for best picture:
 +Number 4 by Joanna!
 +
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 +\\
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 +----
 +
 +==== PhD for Laila ====
 +{{:interface:laila_defense.png?250 |}}
 +Laila Moreno Ostertag successfully defended her dissertation 'Decoding sigle-molecular reactions and interactions at solid/liquuid interfaces'. With her enourmous vocabulary in a variety of languages our group looses with Laila leaving also our Lead Translator. All the best for your future, Laila!
 +
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 +----
 +
 +==== Shiny basement with Ben ====
 +{{:interface:ben_joining.jpg?100 |}}
 +We are happy to welcome Ben Stephani to our group. In his bachelor thesis he is working on finishing our Physical Vapor Deposition (PVD) together with Dr. William Cheng. This machine is essential for many of our experiments since it makes us possible to create thin and flat metal films, a good model system for surfaces in general.
 +Welcome Ben!
 +
 +
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 +----
 +
 +==== Exploring landscapes with Alexander ====
 +{{:interface:alex_joining.png?100 |}}
 +With Alexander Imre we have a new project student. Supervised by Ulrich Ramach and Julia Appenroth Alex does electrochemical studies on L-DOPA to widen our insights into the molecules energy landscape.
 +This is expanding the work that has been started with Laila Moreno Ostertag. Nice to have you, Alex!
 +
 +\\
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 +\\
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 +\\
 +----
 +
 +==== Holiday season?! ====
 +{{:interface:crowdedlab.jpg?200 |}}
 +Even now seems to be a perfect time of the year to go on holiday our lab is crowded as never before. So temperatures are rising not just outside, but also in our lab.
 +Happy holiday season!
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 +----
 +
 +==== New bachelor student Milena ====
 +{{:interface:milena_joining.jpg?100 |}}
 +Milena Zehetner joins our bio-related subgroup as a bachelor student. She studies the properties of glue obtained from ticks, supervised by Laura Mears. This is a promising material for bio-compatible applications for example in surgery. Nice to have you here, Milena!
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 +<clear>
 +----
 +
 +==== Martin starting ====
 +{{:interface:martin_joining.png?100 |}}
 +With Martin Wess joining we enlarge our corrosion team. In cooperation with [[https://www.berndorfband-group.com/en/| Berndorf Band]] and supported by the [[https://www.ffg.at/en| FFG]] he works on material degradation of stainless steels. Welcome Martin!
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 +<clear>
 +----
 +
 +
==== Joanna Joining ==== ==== Joanna Joining ====
{{:interface:joanna_joining.jpg?100 |}} We are happy to welcome our new Postdoc, Joanna Dziadkowiec. She will work on electrochemical corrosion, growth and friction of confined, reactive mineral surfaces. Her project is in collaboration with the [[https://www.mn.uio.no/njord/english/| Njord Centre]] at the University of Oslo, funded by the [[https://www.forskningsradet.no/en/|Research Council of Norway]] (FRINATEK Mobility). Nice to have you here! {{:interface:joanna_joining.jpg?100 |}} We are happy to welcome our new Postdoc, Joanna Dziadkowiec. She will work on electrochemical corrosion, growth and friction of confined, reactive mineral surfaces. Her project is in collaboration with the [[https://www.mn.uio.no/njord/english/| Njord Centre]] at the University of Oslo, funded by the [[https://www.forskningsradet.no/en/|Research Council of Norway]] (FRINATEK Mobility). Nice to have you here!
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==== 'Current event' ==== ==== 'Current event' ====
{{:interface:currentbachelorettes.jpg?120 |}} Our electrochemistry department got new members: With Sonja Scherhaufer and Valentina Wieser we welcome our first Bachelor students. {{:interface:currentbachelorettes.jpg?120 |}} Our electrochemistry department got new members: With Sonja Scherhaufer and Valentina Wieser we welcome our first Bachelor students.
interface/index.1561107763.txt.gz · Last modified: 2019-06-21 11:02 by Dominik Dworschak