September 25th, 2020: Cecilia Fager, Eva Olsson and Niklas Lorén have published the paper "3D high spatial resolution visualisation and quantification of interconnectivity in polymer films" in International Journal of Pharmaceutics. This paper describes how to 3D visualise and quantify interconnectivity in porous materials. You can find the paper here.
June 28th, 2020: Cecilia Fager, Eva Olsson and Niklas Lorén have published the paper "Three‐dimensional reconstruction of porous polymer films from FIB‐SEM nanotomography data using random forests" in Journal of Microscopy. This paper describes how to segment FIB‐SEM tomography data using random forests. You can find the paper here.
June 11th, 2020: We wish to congratulate Ph.D. Cecilia Fager on her excellent dissertation entitled "Quantitative 3D Reconstruction of Porous Polymers using FIB-SEM Tomography - Correlating materials structures to properties of coatings for controlled drug release" and defence. You can view the thesis committes announce decision below.
June 11th, 13:15, 2020: Cecilia Fager defend her dissertation, "Quantitative 3D Reconstruction of Porous Polymers using FIB-SEM Tomography - Correlating materials structures to properties of coatings for controlled drug release", In this work the focus is on the understanding of the correlation between the microstructure and materials properties of phase-separated polymer coatings. We acquired high spatial 3D resolution data on microporous ethyl cellulose and hydroxypropyl cellulose coatings using FIB-SEM tomography. We optimised the FIB-SEM parameters and established a generic protocol for porous and poorly conducting materials in order to overcome challenges such as redeposition, curtaining, shadowing effects, charging and sub-surface information due to the pores. In addition, a new self-learning segmentation algorithm was introduced to enable an automatic separation between pores and matrix. The quantification of the porous network was carried out by determining the pore size distribution, tortuosity and interconnectivity. As a final step, diffusion simulations were performed on the FIB-SEM data and correlated with experimentally measured permeability. You can view the defence here.
May 22nd, 2020: Cecilia Fager, Eva Olsson and Niklas Lorén have published the paper "Optimization of FIB–SEM Tomography and Reconstruction for Soft, Porous, and Poorly Conducting Materials" in Microscopy and Microanalysis. This paper describes how to acquire 3D FIB-SEM data for soft, porous and poorly conducting materials. You can find the paper here.
May 15th, 2020: We are proud to announce that Doctor Andrew Yankovich, recently received the prestigious Albert Crewe Award for 2020 from the Microscopy Society of America (MSA). The award recognizes distinguished contributions to the fields of microscopy and microanalysis in the physical sciences of a single early career scientist. Albert Crewe (1927 - 2009), a physics professor at the University of Chicago and director of Argonne National Laboratory, developed the high-resolution electron microscope that was able to capture the first images of individual atoms in motion. His discoveries helped establish and expand the field of modern scanning transmission electron microscopy, as well as its use for atomic-scale research.
May 5th, 2020: Eva Olsson, Kasper Moth-Poulsen and Joanne Etheridge’ groups cooperate and work on the synthesis and optical properties of metal and metal-oxide nanoparticle heterodimers. These heterodimers are formed by an electrostatic colloidal assembly strategy, incorporating different sizes, shapes and metal or metal oxide compositions into heterodimers. Additionally, hybridized localized surface plasmon resonance of the heterodimers were investigated by using energy and angle-resolved cathodoluminescence (AR-CL) in a SEM. The paper “Constructing a Library of Metal and Metal-Oxide Nanoparticle Heterodimers through Colloidal Assembly” has been accepted by Nanoscale. You can read the article here.
April 24th, 2020: Gustav and Eva have co-authored a paper published in Solar RRL regarding kinetic Monte Carlo simulations for organic solar cell’s current-voltage curves. Experimental electron microscopy data concerning the microstructure was implemented in the modeling. The simulations were calibrated with experimental data from injection barriers, blend morphology and kinetics of the charge transfer data in order to provide relevant data for real operating devices. The study is a collaboration with Linköping University, Åbo Akademi University and Stanford University. You can read the article here.
April 8th, 2020: We are announcing a PhD position on using transmission electron microscopy to study and characterize in-vivo manufactured electronic neuro-pharmaceuticals. The research is a collaboration between Chalmers, Linköping and Lund university. Read more and apply here.
March 9th, 2020: Gustav, Andy and Eva have co-authored a paper published in Nature Materials regarding ground-state electron transfer in all-polymer donor-acceptor heterojunctions. The important findings in the study hold promise for use in, for example, thermoelectrics and wearable electronics. This is a collaboration with Simone Fabiano’s group in Linköping University. There are also contributions from University of Washington, University of Cologne, Chiba University, Yunnan University and the group of Christian Müller at Chalmers University of Technology. You can read the article here.
February 7th, 2020: Xin Wen, Kasper Moth-Poulsen and Eva Olsson have published a paper “Synthesis of Palladium Nanodendrites Using a Mixture of Cationic and Anionic Surfactants” in Langmuir. Transmission electron microscopy was used to study the effects of a binary surfactant mixture on the shape and yield of palladium nanoparticles in the synthesis process. You can find the paper here.
January 14th, 2020: Eva Olsson has been interviewed by Jeol. Eva talks about what inspires her, the research at the Eva Olsson Group and the exciting challenges up ahead. You can read the interview here.
January 14th, 2020: Lunjie Zeng and Shun Kondo has received project funding from Excellence Initiative Nano for instrument building. The aim of the project is to build a multifunctional TEM holder for studying strain, bias and light induced effects in functional materials at the atomic scale.
December 2nd, 2019: Andy and Eva have published a paper in Nano Letters about using STEM EELS to visualize on the nano-scale the strong light-matter interactions between light produced by plamonic nanopyramids and excitons in TMDC materials. This was in collaboration with Timur Shegai's group here at Chalmers and Mathieu Kociak's group in Orsay, France. You can find the paper here.
December 2nd, 2019: Andy, Torben and Eva have published a paper in Imaging and Microscopy about atomic site-specific strain mapping from high precision STEM images. This was in collaboration with Henrik Grönbeck's group here at Chalmers. You can find the paper here.
July 22nd, 2019: We would like to welcome two new Post Docs to the Eva Olsson Group: Dr. Gabriel Sánchez Santolino and Dr. Shun Kondo. We are very happy to have you join!!
June 11-14, 2019: The Eva Olsson Group presented various projects at the SCANDEM 2019 meeting (70th annual meeting of the Nordic Microscopy Society). Andy gave an invited lecture, Shun gave a contributed lecture for which he won the prize for best contributed lecture, Gabriel gave a contributed lecture, and Cecilia and Jonatan gave poster presentations.
May 15th, 2019: We inaugurated the new JEOL TEM microscope MonoNEROARM200, made possible by the Knut and Alice Wallenberg Foundation and Chalmers University of Technology. The new TEM is an opportunity for new exciting research and collaborations. The inauguration was celebrated together with more than hundred people. The program included lectures by guests from international research centres including Ferdi Schüth, Rafal Dunin-Borkowski, Koichi Fukuyama, Masashi Iwatsuki, Julia Fernandez-Rodriguez, Max Haider, Yuichi Ikuhara, Angus Kirkland, Joachim Mayer, Martha McCartney, Robert Sinclair, David Smith, Masaki Mukai and Liam Spillane. You can read more here, view the program here and view a recording of the inauguration here.
January 9th, 2019: Torben and Eva have contributed to a paper published in Applied Catalysis A, General on chemical poisoning of NOx storage catalysts. This was in collaboration with researchers from the Competence Centre for Catalysis at Chalmers and the Volvo Car Corporation. You can find the paper here.
November 7th, 2018: Jonatan, Lunjie, Ludvig and Eva, in collaboration with Thomas Kanne Nordqvist, Peter Krogstrup and Jesper Nygård of Niels Bohr Institute, have recently published a paper in Nano Energy. The article, which is about a characterization method for single nanowire solar cells, can be found here.
November 1st, 2018:We would like to welcome our new PhD student in the group: Pierre Carmona. He will be studying the dynamics of formation of cellulose films for coatings of drug delivery systems. He will perform the main part of his work in RISE with Niklas as supervisor and will use the FIB SEM in Eva group to characterize the structure of his systems.
October 30th, 2018: Lunjie, Wolfgang and Eva, in collaboration with Christoph Gammer of Erich Schmid Institute of Materials Science, Burak Ozdol and Andrew Minor of Lawrence Berkeley National Laboratory, and Thomas Nordvquist and Peter Krogstrup of Niels Bohr Institute, have recently published a research paper in Nano Letters. The article “Correlation between Electrical Transport and Nanoscale Strain in InAs/In0.6Ga0.4As Core–Shell Nanowires” can be found here.
October 26th, 2018: Andy and Eva have contributed to a paper published in Nano Letters on strong light-matter coupling in Au bipyramid - WSe2 hybrid systems. This was in collaboration with the Shegai Group in the Bionanophotonics Division of the Department of Physics here at Chalmers. You can find the paper here.
October 25th, 2018: The Eva Olsson Group is organizing an advanced TEM/STEM school from November 19-21, 2018, where you can learn about recent developments in advanced electron microscopy techniques from leading experts. You are welcome to join!! Please find additional information and registration details here.
October 25th, 2018: The SOFT Microscopy Centre is organising a network meeting at Chalmers on the 14th of November, 2018. The theme of the meeting is Imaging in 2D and 3D. Please find more information here.
October 24th, 2018: We are extremely happy to have David Smith and Martha McCartney from Arizona State University with us. They will be with our Division on Sabbatical until mid-December. Welcome!
August 22nd, 2018: Ludvig and Eva, in collaboration with Mikael Juhani Kuisma of Jyväskylä University, Alexandre Dmitriev of Gothenburg University and Joakim Löfgren, Kristof Lodewijks, Mattias Thuvander and Paul Erhart of Chalmers, have succeeded in the counterintuitive feat of melting gold at room temperature which has been published in Physical Review Materials. The article "Electric-field-controlled reversible order-disorder switching of a metal tip surface" can be found here.
August 21st, 2018: Congratulations to Ludvig for winning first prize at a poster competition at the excellence initiative Nanoscience and Nanotechnology in Marstrand, Sweden! More information can be found here.
July 13th, 2018: Torben, Andy and Eva, in collaboration with Henrik Grönbeck and Mikkel Jørgensen from the Division of Chemical Physics at Chalmers, have published their exciting new research entitled "Influence of atomic site-specific strain on catalytic activity of supported nanoparticles" in Nature Communications today. You can find the paper here. Congratulations!
May, 2018: Congratulations to Erik Olsén for successfully passing his Masters examination! Erik's thesis was entitled "Quantitative electron microscopy of self-assembled nanoparticle structures - Investigation of the plasmonic hybridisation in gold-palladium heterodimers using angle resolved cathodoluminescence".
May, 2018: Congratulations to Gustav Persson for successfully passing his Masters examination! Gustav's thesis was entitled "Electron microscopy study of a novel battery material - Changes in structure and chemical composition during cycling". For this thesis work, Gustav used electron microscopy to study the changes in microstructure and the formation of a solid electrolyte interphase (SEI) for a novel battery material consisting of porous carbon nanofibers.
April11th & 17th, 2018: The new JEOL S/TEM instrument installation is moving along great! We are looking at Si [110] dumbbells at 40 keV!
March 14th, 2018: The Eva Olsson group celebrated the beginning of the assembly of the new low-keV JEOL TEM/STEM with the JEOL team with a night filled with bowling.
January 15th, 2018: We would like to welcome our new masters thesis students in the group: Gustav Persson and Erik Olsén. Gustav will be studying carbon-based nanofiber materials and their properties as anodes in lithium ion batteries, and Erik will be analyzing plasmonic properties in self-assembled nanoparticle systems made of gold and palladium which potentially could be used as various sensors.
October 15-20th, 2017: Andy presented our work on high precision STEM imaging and strain measurements of supported metallic nanocatalysts at the Banff International Research Station's workshop on Mathematical Advances in Electron Microscopy in Oaxaca, Mexico. You can find information about this workshop and the talk here.
October 11th, 2017: We are very happy to say congratulations to our masters students Ren, Marie and Jonatan who have all passed their master theses examinations. The titles of their masters theses are as follows: Ren Qiu: "Thermal in situ TEM experiment on nanoscale indium islands - Estimation of Electron Beam Heating Effect", Marie Chalardyaem: "Low temperature synthesis of ZnO nanorods towards the fabrication of X-ray tubes", Jonatan Holmér: "In Situ Scanning Electron Microscopy (SEM) Studies of Photovoltaic Nanowires-Correlation between Functional Nanostructure and Properties". We wish you all the best with your future careers!
September 28th, 2017: Congratulations to Torben Nilsson Pingel for successfully completing his PhD thesis, titled "Quantitative Electron Microscopy Studies of Metal Nanoparticle Catalysts: Nanostructure, Support Interaction and Aging Effects". Very well done! You can find his thesis here.
June 6th, 2017: Andy contributed to a paper published in Advanced Materials titled "Metasurfaces and Colloidal Suspensions Composed of 3D Chiral Si Nanoresonators". You can find the paper here.
May 25th-26th, 2017: Ludvig is doing practicals on "In Situ Probing" at the microscopy school QEM 2017 in Balurac les Bains France. Check for updates here!
May 18th, 2017: Andy presents his EELS surface plasmon hybridization research at the EDGE conference in Okinawa Japan.
March 28th, 2017: Andy published the paper "Multidimensional Hybridization of Dark Surface Plasmons" in ACS Nano. You can find the paper here. Congratulations!
