People

Group members:

Anders Nilsson
Anders Nilsson

 

Anders Nilsson, Professor

Office: C6:3067
Telephone: +46 (0)8 5537 8637, e-mail: andersn@fysik.su.se
About: Professor Anders Nilsson heads the experimental section of the XSoLaS group. He joined Stockholm University in 2014 after working as a professor at Stanford University for 15 years. Some of his research group members are still in Stanford but most of them are in Stockholm. The research group specializes in studying materials through their interaction with x-rays. Specifically, the research consists of studying the chemical bonds and ultrafast reactions on surface and interfaces through X-ray and electron spectroscopy and scattering, probing the hydrogen-bonding environment in water and ice at different conditions, ultrafast chemistry on surfaces, heterogeneous and electro catalysis.
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Lars G. M. Pettersson
Lars G. M. Pettersson

 

Lars G. M. Pettersson, Professor

Office: D6:3013
Telephone: +46 (0)8 5537 8712, e-mail: lgm@fysik.su.se
About: Lars G.M. Pettersson heads the theory section of the XSoLaS group. He did his PhD in theoretical physics (1984) at Stockholm University, Sweden, where he focused on highly accurate quantum chemical calculations as well as developing approximate modeling techniques. He did post-doctoral studies (1984-1986) in California at IBM, San Jose, and NASA Ames Research Center. He returned to Stockholm University where he is a professor in theoretical chemical physics. His research focus lies on modeling processes at surfaces, theoretical treatment and application of inner-shell spectroscopies, but the main effort is devoted to understanding the structure and dynamics of water and aqueous solutions.
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Peter Amann
Peter Amann

 

Peter Amann, Researcher

Office: C6:3065
Telephone: +46 (0)8 5537 8716, e-mail: peter.amann@fysik.su.se
About: Peter joined the XSoLaS group in November 2014 and his research interests are in studying surface chemical reactions under high pressure and high temperature and investigating the solid-liquid interface. The techniques which he uses are high pressure XPS and TPD.
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Katrin Amann-Winkel
Katrin Amann-Winkel

 

Katrin Amann-Winkel, Researcher

Office: D6:3012
Telephone: +46 (0)8 5537 8700, e-mail: katrin.amannwinkel@fysik.su.se
About: Katrin joined the XSolaS group in November 2014. Her research interests are the experimental investigation of the glass transition in amorphous ices, hence probing 'No Man's land' from the low-temperature side. Katrin was born in Germany and studied physics at the Technical University Darmstadt. She completed her PhD under supervision of Erwin Mayer and Thomas Loerting on amorphous ices in 2009 at the University of Innsbruck. She continued her studies on amorphous ices in Innsbruck with a Hertha Firnberg grant (FWF) until 2014 and then moved to Stockholm University.
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Gaia Camisasca
Gaia Camisasca

 

Gaia Camisasca, Postdoc

Office: C6:3069
Telephone: +46 (0)8 5537 8714, e-mail: gaia.camisasca@fysik.su.se
About: Gaia joined the XSoLaS group in March 2017 after obtaining her PhD in physics from Roma Tre University under the supervision of Prof. Paola Gallo. Her research involved theoretical simulations to study dynamics and thermodynamics of supercooled water.
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Filippo Cavalca
Filippo Cavalca

 

Filippo Cavalca, Researcher

Office: T6:1001
Telephone: +46 (0)8 5537 8687, e-mail: filippo.cavalca@fysik.su.se
About: Filippo joined the XSolaS group in September 2015, and is working on catalysts for the electrochemical CO2 reduction reaction (CO2RR). He has been engaged in catalysis for sustainable energy and materials characterization since his PhD in physics at the Technical University of Denmark, where he focused on photocatalysts for water splitting. Subsequently, he worked on SO2 oxidation catalysts for power plant exhaust cleaning while he was a researcher at Haldor Topsøe A/S in Denmark. His research in the XSoLaS group is focused on probing the CO2RR reaction in situ using electrochemistry and ambient-pressure X-ray photoelectron spectroscopy (APXPS) in order to probe reaction intermediates on the surface of the catalyst and elucidate the reaction mechanism.
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Oscar Diaz Morales
Oscar Diaz Morales

 

Oscar Diaz Morales, Postdoc

Office: T6:1003
Telephone: +46 (0)8 5537 8701, e-mail: oscar.diazmorales@fysik.su.se
About: Oscar joined XSolaS group as a postdoctoral researcher in September 2016. His specific research in the group involves the use of operando x-ray techniques to probe the electrocatalytic carbon dioxide conversion into storable fuels. Oscar is originally from Caracas, Venezuela and obtained his bachelor and master degree in Chemistry at Simon Bolivar University. After completing his master, he moved to The Netherlands where he obtained the PhD degree from Leiden University by successfully defending the thesis entitled 'Catalysis of the electrochemical water oxidation to oxygen'; the thesis was performed under supervision of Prof. Marc Koper. He stayed one year more in Leiden, as a postdoctoral researcher in a joint project between Leiden University and Hitachi High-Technologies Corporation; the project aimed to use electrochemical and microcopy techniques to study platinum corrosion. His research interests cover the use of spectroscopy (UV-Vis, Raman, Infrared, Mass Spectrometry, X-rays) to study the electrode-electrolyte interface in operando conditions.
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Elias Diesen
Elias Diesen

 

Elias Diesen, Postdoc

Office: T6:1004
Telephone: +46 (0)8 5537 8218, e-mail: elias.diesen@fysik.su.se
About: Elias joined the group as a postdoctoral researcher in August 2016 after obtaining his PhD in atomic physics working at the Max Planck Institute for Physics of Complex Systems in Dresden, Germany. He is working on theoretical simulations of dynamics of chemical reactions on surfaces and in liquids following creation of core-excited states, and on calculating x-ray spectroscopies. He is also investigating the effect of high intensity THz radiation on surface reactions, in particular for catalysis applications.
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David Degerman
David Degerman

 

David Degerman, PhD student

Office: C6:3069
Telephone: +46 (0)8 5537 8714, e-mail: david.degerman@fysik.su.se
About: David joined the XSoLaS group in August 2015 after studying chemistry at Stockholm University specializing in Materials Chemistry. He contributes mainly to the surface science research using High Pressure X-ray Photoelectron Spectroscopy (HP-XPS). His overall goal is to characterize and improve catalysts for various energy applications. His other hobbies include science communication, comic books, choir, video games and church.
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Jörgen Gladh
Jörgen Gladh

 

Jörgen Gladh, Postdoc

Office: C6:3069
Telephone: +46 (0)8 5537 8711, e-mail: gladh@fysik.su.se
About: Jörgen joined the group as a postdoctoral researcher in November 2017. He has a Master of Sciences in Engineering Physics from Karlstad University, and he obtaining his PhD in Chemical Physics here at Stockholms University. He currently is working on the construction of a new experimental chamber to perform THz radiation measurements of chemical reactions on surfaces using x-ray spectroscopies.
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Mikaela Görlin
Mikaela Görlin

 

Mikaela Görlin, Postdoc

Office: T6:1002
Telephone: +46 (0)8 5537 8635, e-mail: mikaela.gorlin@fysik.su.se
About: Mikaela joined the XSoLaS group in May 2017. She carried out her PhD in the group of Prof. Peter Strasser at Technical University of Berlin as part of the Berlin International Graduate School of Natural Sciences and Engineering (BIG-NSE), offered by'Unifying Concepts in Catalysis(UniCat)'. She was working in the field of electrocatalysis, with focus on non-noble metal catalysts for the oxygen evolution reaction (OER). She also carried out Postdoctorial studies in the group of Prof. Holger Dau at Free University of Berlin focusing on X-ray methods. She undertook her undergraduate studies at Uppsala University where her studies focused on artificial photosynthesis and photochemistry at the 'fotomol' department.
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Svante Hedström
Svante Hedström

 

Svante Hedström, Postdoc

Office: T6:1004
Telephone: +46 (0)8 5537 8218, e-mail: svante.hedstrom@fysik.su.se
About: Svante joined the group in June 2017 as a postdoctoral fellow, after obtaining his PhD from Lund University in 2015 and a postdoctoral appointment at Yale University. Here, he is involved in the efforts to theoretically investigate catalytic reactions of small molecules on metal surfaces, particularly carbon-dioxide reduction on copper. His general research interests are energy conversion, charge transport, and catalysis, using quantum and other computational chemistry methods.
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Kyung Hwan Kim
Kyung Hwan Kim

 

Kyung Hwan Kim, Postdoc

Office: C6:3074
Telephone: +46 (0)8 5537 8631, e-mail: kyunghwan.kim@fysik.su.se
About: Kyung Hwan joined the XSoLaS group in March 2016. He did his PhD in chemistry from KAIST (Korea Advanced Institute of Science and Technology) under the supervision of Professor Hyotcherl Ihee. His PhD research focuses on the study of reaction dynamics in solution via time-resolved X-ray solution scattering. His current research interests cover the solute-solvent interaction in water (hydrogen bonding between solute and solvent) and study of catalytic reaction on the surface.
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Ming-Tao Lee
Ming-Tao Lee

 

Ming-Tao Lee, Postdoc

Office: C6:3065
Telephone: +46 (0)8 5537 8716, e-mail: ming-tao.lee@fysik.su.se
About: Ming joined the XSoLaS group in May 2016. He has performed Synchrotron-based Near Ambient Pressure Photoemission (NAPP) on a Liquid micro-jet studies of interfacial aqueous chemistry at the Swiss Light Source (SLS) at the Paul Scherrer Institute (PSI). He also quantitatively compared experimental results with the molecular dynamics (MD) simulations to develop a detailed understanding of the interfacial aqueous chemistry.
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Chang Liu
Chang Liu

 

Chang Liu, PhD student

Office: C6:3074
Telephone: +46 (0)8 5537 8631, e-mail: chang.liu@fysik.su.se
About: Chang Liu's research interest is mainly in theoretical simulations. He is working on theoretical modelling of x-ray spectroscopy, mainly x-ray emission spectroscopy (XES) of liquid and surface adsorbates. Density Functional Theory (DFT) is employed for this purpose. Currently, he is using GPAW and deMon2k for relevant simulations.
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Jonatan Öström
Jonatan Öström

 

Jonatan Öström, PhD student

Office: D6:3069
Telephone: +46 (0)8 5537 8714, e-mail: jonatan.ostrom@fysik.su.se
About: Jonatan joined the XSoLaS group in May 2016 as a PhD student in the theory part of the group, engaging in the theoretical and computational study of water. He studied Engineering Physics at Luleå University of Technology, where his thesis project was a computational study of an astrochemical bond­making process called Radiative Association. His main research interest is long­range intermolecular interactions.
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Harshad Pathak
Harshad Pathak

 

Harshad Pathak, Postdoc

Office: D6:3012
Telephone: +46 (0)8 5537 8700, e-mail: harshad.pathak@fysik.su.se
About: Harshad joined the XSoLaS group in March 2015 after completing his PhD from The Ohio State University in Chemical Engineering under Dr. Barbara Wyslouzil. He is currently building an experimental set-up to probe the temperatures and specific heat capacities of bulk water and later on upgrade the experiment to higher pressures to probe water's liquid-liquid critical point (LLCP) through experiments. He also collaborates with theoriticians to find LLCP of water from MD simulations for different water models.
Personal web page

Fivos Perakis
Fivos Perakis

 

Fivos Perakis, Postdoc

Office: D6:3011
Telephone: +46 (0)8 5537 8574, e-mail: f.perakis@fysik.su.se
About: Fivos is a Postdoctoral Scholar at the SLAC National Accelerator Laboratory and Stanford University, funded by the Swiss National Science Foundation and Stockholm University. He is a part of XSoLaS and his experimental investigations utilize ultrafast X-ray scattering on liquid and supercooled water, as well as on crystalline and amorphous ice. He was born in Athens (Greece), obtained his physics diploma from the University of Crete in 2008 and did his diploma work on computer simulations of quantum complex networks. He then moved to University of Zurich, where he obtained his Ph.D. in physical chemistry in the group of Peter Hamm in 2013. His Ph.D. research focuses on the ultrafast dynamics of water below freezing point using non-linear vibrational infrared spectroscopy.

Daniel Pettersson
Daniel Pettersson

 

Daniel Mariedahl, PhD student

Office: C6:3074
Telephone: +46 (0)8 5537 8631, e-mail: daniel.pettersson@fysik.su.se
About: Daniel joined the XSoLaS group as an experimentalist in August 2015. His research ineterests are studying amorphous ice through different techniques like Small Angle Xray scattering and Xray photon correlation spectroscopy.
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Simon Schreck
Simon Schreck

 

Simon Schreck, Postdoc

Office: C6:3066
Telephone: +46 (0)8 5537 8721, e-mail: simon.schreck@fysik.su.se
About: Simon joined the XSoLaS group in May 2015 after receiving his PhD from the University of Potsdam and the Helmholtz-Zentrum Berlin in Germany. His research interests cover experimental soft X-ray spectroscopy applied to molecules, liquids and surface adsorbates. He is specialized in X-ray absorption spectroscopy, resonant inelastic X-ray scattering (RIXS) as well as ultra-high (vibrational) resolution RIXS of molecular systems and the development of nonlinear X-ray spectroscopy. His current research activities concentrate on time-resolved optical pump–X-ray probe experiments at X-ray free-electron lasers for the investigation chemical dynamics on surfaces.
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Alexander Spaeh
Alexander Späh

 

Alexander Späh, PhD student

Office: C6:3074
Telephone: +46 (0)8 5537 8631, e-mail: alexander.spaeh@fysik.su.se
About: Alexander joined the group in August 2015 as an experimentalist. He focuses on structures and dynamics of fluctuations between local HDL and LDL configurations in water from ambient temperatures down to the supercooled regime.
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Hsin-Yi Wang
Hsin-Yi Wang

 

Hsin-Yi Wang, Postdoc

Office: T6:1002
Telephone: +46 (0)8 5537 8635, e-mail: wang.hy@fysik.su.se
About: Hsin-Yi joined the XSoLaS group with a background of electrochemistry in May 2017 after obtaining his PhD degree from Nanyang Technological University (Singapore) in School of Chemical and Biomedical Engineering under Dr. Bin Liu. He is currently building an in-situ setup to observe the surface intermediate on the catalyst under the electrochemical condition via synchrotron radiation with pump-probe method, further elucidating the transit reaction mechanism.
Personal web page

Matthew Weston
Matthew Weston

 

Matthew Weston, Postdoc

Office: C6:3066
Telephone: +46 (0)8 5537 8721, e-mail: matthew.weston@fysik.su.se
About: Matthew joined the group in April 2015. His research interests include studying ultrafast surface chemistry using free electron lasers.
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Iurii Zhovtobriukh
Iurii Zhovtobriukh

 

Iurii Zhovtobriukh, PhD student

Office: C6:3074
Telephone: +46 (0)8 5537 8631, e-mail: Iurii.Zhovtobriukh@fysik.su.se
About:Iurii joined the XSoLaS group in July, 2012. His research interest lies in the theoretical modelling of the X-ray emission (XES) and absorption (XAS) spectroscopies of water and ice. One project is devoted to finding relevant order parameter which is suitable to explain the different spectrum features in both XES and XAS spectroscopies of the liquid water, another project is connected with accurate simulation of emission water spectrum with inclusion dynamical effects via the semi-classical approximation to the Kramers-Heisenberg formula.
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Collaborators:

Daniel Friebel
Daniel Friebel

 

Daniel Friebel, Associate staff scientist, SLAC National accelerator laboratory

e-mail: dfriebel@slac.stanford.edu
About:

May Ling Ng
May Ling Ng

 

May Ling Ng, PostDoc, SLAC National accelerator laboratory

e-mail:mlng@slac.stanford.edu
About:May Ling studies thermal and electrocatalytic reactions under ambient pressure and in operando conditions using APXPS. She also uses other surface science techniques such as NEXAFS, XES, LEED and STM in complementary to XPS. She supports the experimental and maintenance activities at the APXPS endstation at BL13-2, SSRL. Her research interests are carbon chemistry on transition metal model catalysts, artificial photosynthesis and 2D materials (e.g. hexagonal boron nitride and graphene).
Personal web page

Hirohito Ogasawara
Hirohito Ogasawara

 

Hirohito Ogasawara, Staff scientist, SLAC National accelerator laboratory

e-mail: hirohito@slac.stanford.edu
About:
Personal web page

Egon Santos
Egon Santos

 

Egon Santos, visiting PhD student, Stockholm University

e-mail: egon.cs@fysik.su.se
About:Egon joined the XSoLaS group in September 2017 as a PhD student in the theory part of the group. His research interests are studying metal sulfides and its implications in mine industry and the environment.
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Jonas Sellberg
Jonas Sellberg

 

Jonas Sellberg, Assistant Professor, Kungliga Tekniska Högskolan

e-mail: jonassel@kth.se
About:Jonas obtained his PhD in chemical physics at Stockholm University in 2014 under the supervision of Anders Nilsson and Lars GM Pettersson. His PhD thesis titled X-ray scattering and spectroscopy of supercooled water and ice received the Sigrid Arrhenius stipend for eminent research during graduate studies. Jonas continued his scientific career as postdoctoral fellow in the laboratory of molecular biophysics at Uppsala University and joined recently the biomedical & x-ray physics group at KTH Royal Institute of Technology, where he is currently an assistant professor in applied physics. His expertise lies within x-ray scattering and spectroscopy of water and ice, ultrafast pump probe x-ray spectroscopy of surface adsorbates, and coherent diffractive imaging of live viruses and cells.
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