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interface:index [2019-03-14 02:30]
Dominik Dworschak
interface:index [2019-05-02 09:54] (current)
Dominik Dworschak
Line 16: Line 16:
  * Corrosion and reactivity in confined spaces (crevice corrosion, SCC)   * Corrosion and reactivity in confined spaces (crevice corrosion, SCC)
  * Structuring of ionic liquids and solutions of ionic liquids at charged and uncharged interfaces   * Structuring of ionic liquids and solutions of ionic liquids at charged and uncharged interfaces
 +
 +====== Recent work ======
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 +===== 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) =====
 +{{:interface:rsi.2019.90.issue-4.largecover.jpg?150 |Cover RSI}}
 +Multiple beam interferometry (MBI) evolved as a powerful tool for the simultaneous evaluation of thin film thicknesses and refractive indices in Surface Forces Apparatus (SFA) measurements. However, analysis has relied on simplifications for providing fast or simplified analysis of recorded interference spectra. Here, we describe the implementation of new optics and a generalized fitting approach to 4 × 4 transfer matrix method simulations for the SFA. The newly developed optical layout for SFA, which greatly simplifies operation, introduces reference beams, allows recording of reflection and transmission mode spectra, and minimizes potential systematic errors in experiments and analysis. This approach greatly simplifies SFA experimentation and analysis and opens SFA for new and exciting opportunities, including metamaterials, multilayered anisotropic layers, layers of rotating anisotropic layer, as well as chiral layers. FREE DOWNLOAD from [[https://aip.scitation.org/doi/10.1063/1.5085210|Rev. Sci. Instr.]].
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 +<clear>
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 +===== In situ nano- to microscopic imaging and growth mechanism of electrochemical dissolution (e.g., corrosion) of a confined metal surface =====
 +{{:interface:aip_pub_01.png?150 |Crevice corrosion}}
 +Reactivity in confinement is central to a wide range of applications and systems, yet it is notoriously difficult to probe reactions in confined spaces in real time. Using a modified electrochemical surface forces apparatus (EC-SFA) on confined metallic surfaces, we observe in situ nano- to microscale dissolution and pit formation in well-defined geometries in environments relevant to corrosion processes. Read more in [[http://www.pnas.org/content/114/36/9541|PNAS]].
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 +<clear>
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 +===== One molecule at the time: Probing surface-to-molecule bonds - Bias and work dissipation (Open access article) =====
 +{{:interface:aip_rw_fig2.png?150 |Workfluctuations and free energy estimator convergence}}
 +The capabilities of Atomic Force Microscopes and Optical Tweezers to probe unfolding or surface-to-molecule bond rupture at a single-molecular level are widely appreciated. Our recent results provide new insights into stability and work dissipation mechanisms at adhesive interfaces at the single-molecular level, and offer important design and analysis aspects for single-molecular surface-to-molecule experiments. Want to know more? Read our article (OPEN ACCESS) in this [[http://pubs.acs.org/doi/10.1021/acs.langmuir.7b02844|Langmuir]] special issue.
 +<clear>
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====== Group news ====== ====== Group news ======
 +==== 'Current event' ====
 +{{:interface:currentbachelorettes.jpg?120 |}} Our electrochemistry department got new members: With Sonja Scherhaufer and Valentina Wieser we welcome our first Bachelor students.
 +Valentina will work on the electrochemical version of our Surface Force Apparatus (SFA) under the supervision of William. Sonja does electrochemical characterization of dopamine and other catechol derivates, supported by Laila. Welcome!
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 +----
 +
 +==== PhD students +1, Austrians +1 ====
 +{{:interface:uliramach.jpg?90 |}} With Ulrich Ramach joining we widen our research more to the bio direction. In his PhD Uli wants to gain insights into ion channels and proteins for biosensing. His work is done in collaboration with [[https://cest.at/|CEST]].
 +Welcome Uli!
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 +----
 +
==== New faces in the group ==== ==== New faces in the group ====
{{:interface:flo.jpg?90 |}}{{:interface:adelr.jpg?90 |}} We are happy to welcome two new persons among us. Florian Feldmann is doing his PhD with both us and the company [[https://www.doerken-mks.de/en/|Dörken MKS]]. He will characterize corrosion protection coatings based on zinc lamellae. Adél Racz is doing her PhD at the [[https://www.energia.mta.hu/en|Hungarian Academy of Sciences Centre for Energy Research]] and doing a scholarship with the [[https://oead.at/en/|OeAD]]. She brought Carbides produced by radiation to characterize their tribologic properties. \\ {{:interface:flo.jpg?90 |}}{{:interface:adelr.jpg?90 |}} We are happy to welcome two new persons among us. Florian Feldmann is doing his PhD with both us and the company [[https://www.doerken-mks.de/en/|Dörken MKS]]. He will characterize corrosion protection coatings based on zinc lamellae. Adél Racz is doing her PhD at the [[https://www.energia.mta.hu/en|Hungarian Academy of Sciences Centre for Energy Research]] and doing a scholarship with the [[https://oead.at/en/|OeAD]]. She brought Carbides produced by radiation to characterize their tribologic properties. \\
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-====== Recent work ====== 
-{{:interface:aip_pub_01.png?150 |Crevice corrosion}} 
- ===== In situ nano- to microscopic imaging and growth mechanism of electrochemical dissolution (e.g., corrosion) of a confined metal surface ===== 
-Reactivity in confinement is central to a wide range of applications and systems, yet it is notoriously difficult to probe reactions in confined spaces in real time. Using a modified electrochemical surface forces apparatus (EC-SFA) on confined metallic surfaces, we observe in situ nano- to microscale dissolution and pit formation in well-defined geometries in environments relevant to corrosion processes. Read more in [[http://www.pnas.org/content/114/36/9541|PNAS]]. 
-\\  
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- 
- 
- 
-{{:interface:aip_rw_fig2.png?150 |Workfluctuations and free energy estimator convergence}} 
-===== One molecule at the time: Probing surface-to-molecule bonds - Bias and work dissipation ===== 
-The capabilities of Atomic Force Microscopes and Optical Tweezers to probe unfolding or surface-to-molecule bond rupture at a single-molecular level are widely appreciated. Our recent results provide new insights into stability and work dissipation mechanisms at adhesive interfaces at the single-molecular level, and offer important design and analysis aspects for single-molecular surface-to-molecule experiments. Want to know more? Read our article in this [[http://pubs.acs.org/doi/10.1021/acs.langmuir.7b02844|Langmuir]] special issue. 
interface/index.1552527059.txt.gz · Last modified: 2019-03-14 02:30 by Dominik Dworschak