Tobias Ambjörnsson


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Personlig profil


Teoretisk bionanofysik

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Research overview

I have a broad expertise within the fields of theoretical biological physics, equilibrium and non-equilibrium statistical physics, mathematical physics and nanophysics. I worked with several experimental partners from the fields of physics, chemistry and nanoscience.


Examples of research topics

  • Data analysis and modeling for particle tracking 
  • Optical DNA mapping (DNA barcoding)
  • Crowding effects on tracer particle dynamics in many-body systems
  • Single-file diffusion
  • Localized surface plasmons in metallic nanoparticles
  • Electric and electromagnetic response of biomembranes
  • DNA breathing dynamics and protein binding dynamics
  • Translocation of biopolymers through nanopores
  • Fluroscence of molecules near metallic surfaces
  • Interaction between optical electromagnetic fields and molecular aggregates
  • Epidemiology on networks


Group members 

  • Albertas Dvirnas, post-doc 2022- 
  • Dibyayjoti Mohanta, post-doc 2022- 
  • Erik Clarkson, research intern 2022-2023 


Previous members

  • Steffi Schijf, BSc student 2022-2023.
  • Erik Clarkson, MSc student, 2022.
  • Simon Tropp, MSc student, 2022.
  • Jake Lumsden, MSc student, 2022.
  • Albertas Dvirnas, PhD student, 2017-2022.
  • Lennart Golks, Master student, 2020-2021.
  • Nirvika Chouhan, Research intern (through Jobbsprånget) 2020-2021.
  • Magnus Brander, Master student 2019-2020.
  • Jens Krog, Post-doc 2018-2020.
  • Wensi Zhu, Master student 2017-2018.
  • Magnus Brander, Bachelor student 2018.
  • Henrik Nordanger, Master student 2016, project worker 2017.
  • Callum Stewart, Master student 2016-2017,
  • Lisa Rämisch, Summer research intern 2017. 
  • Arthur Genthon, Exchange master student (Ecole Normale Superieure Paris-Saclay) 2019
  • Saair Quaderi, Visting researcher 2015-2017.
  • Vibha Kumra, Bachelor student 2016.
  • Hemant Kumar, Visting researcher (Indian Institute of Technology, Delhi) 2016.
  • Johannes Isaksson, Bachelor student 2016.
  • Christoffer Pichler, Masters student 2015.
  • Paola Torche, Bachelor student 2015.
  • Erik Lagerstedt, Masters student 2014.
  • Michaela Schad, PhD student 2010-2015.
  • Erik Lagerstedt, Bachelor student 2011.
  • Susanna Hammarberg, Summer research intern 2014.
  • Charleston Noble, Researcher 2013-2014.
  • Lloyd Sanders, PhD student 2010-2014.
  • Adam Nilsson, Masters student 2013.
  • Simon Pigeon, Post-doc 2012-2013.
  • Karl Fogelmark, Master student and research intern 2010-2011.


List of past and present collaborators (alphabetical order)

  • Peter Apell, Chalmers University, Sweden.
  • Suman Banik, Bose Institute, India.
  • Eli Barkai, Bar Ilan University, Israel.
  • Dirk Brockmann, Northwestern University, USA.
  • Yuval Ebenstein, Tel Aviv University, Israel.
  • Per Lyngs Hansen, University of Southern Denmark, Denmark.
  • John Kasianowicz, National Institute of Standards and Technology, USA.
  • Peter Jönsson, Physical chemistry, Lund University
  • Oleg Krichevsky, Ben-Gurion University, Israel.
  • Zoran Konkoli, Chalmers University, Sweden.
  • Mikael Käll, Chalmers University, Sweden.
  • Ludvig Lizana, Umeå University, Denmark.
  • Michael Lomholt, University of Southern Denmark, Denmark.
  • Ed Di Marzio, National Institute of Standards and Technology, USA.
  • Ralf Metzler, Technical University Munich, Germany.
  • Gautam Mukhopadhyay, Indian Institute of Technology Bombay, India.
  • Weihai Ni, Universidade de Vigo, Spain.
  • Pontus Nordenfelt, Division of Infection Medicine, Lund University.
  • Tomas Novotny, Charles University, Czech Republic.
  • Jonas Pedersen, Technical University of Denmark, Denmark.
  • Robert Silbey, Massachusetts Institute of Technology, USA.
  • Alessandro Taloni, Tel Aviv University, Israel.
  • Jonas Tegenfeldt, Lund University and Göteborg University, Sweden.
  • Jianfang Wang, Chinese University of Hong Kong.
  • Fredrik Westerlund, Chalmers University, Sweden.



  • 2023-2027: VR, project grant: Connecting the dots: probabilistic mapping of biomolecular paths in fluorescence microscopy, PI.
  • 2022-2024: Barncancerfonden, Optical DNA mapping for improved diagnostics for children with leukemia, co-PI. PI: Fredrik Westerlund.
  • 2022-2024:The Erling-Persson Family Foundation, Next generation diagnostic of bacterial infections, co-PI. PI: Fredrik Westerlund.
  • 2018-2019: Crafoord Foundation, Detecting antibiotic resistance genes on plasmids using high-throughput and cell-phone microscopy based optical DNA mappings, PI.
  • 2017-2020: The Erling-Persson Family Foundation, A novel ultrafast method for detecting multiresistant bacteria in intensive care units, co-PI. PI: Fredrik Westerlund. 
  • 2015-2019: VR, project grant,  Non-equilibrium biophysics in nano-confined systems, Grant ID: 2014-4305, PI. 
  • 2015-2019: EU, BeyondSeq -- Genomic diagnostics beyond the sequence, PI: Yuval Ebenstein.
  • 2012-2013, Carl Tryggers Stiftelse. Classifying DNA Melting Maps for Ultra-fast Identification of Species, PI. 
  • 2011-2012, The Crafoord Foundation. Nanoscale tracer dynamics in many-body heterogenous soft matter systems, PI.
  • 2010-2014: VR, project grant, Modeling of nanoscale biophysical  processes and label-free detection using metallic nanoparticles, PI.
  • 2006-2011: The Knut and Alice Wallenberg Foundation. Bio-nano-sensor physics. Post-doc grant + repatriation, PI.






  • FYTN15/FMFN25 Statistical Mechanics (course coordinator/lecturer) 
  • FYTN05 Theoretical Biophysics (lecturer) 



  • FYTN03 Computational Physics (course coordinator/lecturer), 2009-2019
  • FYTK02/FYTM03/FYTM04, degree project in theoretical physics (course coordinator), 2015-2018, 2020-2022.
  • Morphomatics, Chalmers University (lecturer), 2001-2002  
  • Living State Physics, Chalmers University (lecturer), 1999-2001
  • Teaching Assistant for several courses at Chalmers University of Technology and Göteborg University, 1998-2003 

Ämnesklassifikation (UKÄ)

  • Annan fysik


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