Shegai Group

The scientific interests, goals and area of expertise of the Shegai group can be briefly summarized as nanoscale light-matter interactions. Our aim is to investigate fundamental and quantum optical aspects of light matter-interactions, as well as to develop practical applications in e.g. surface-enhanced spectroscopies and sensing. The benchmark of the group is experimental facilities and experience that allows us to perform experiments on a single nanoparticle – single molecule level.

Our recent activities include plasmon-exciton interactions, strong coupling phenomena, non-linear and low temperature single particle imaging and spectroscopy, surface-enhanced Raman scattering and fluorescence microscopy. 

We are always looking for passionate and talented Master students, PhDs and posdocs!
If you are interested in our research write directly to timurs@chalmers.se.

News

We have a Master thesis project available in collaboration with RISE!
Please check the following link for details on the project:


Recent publications 
For a complete list see e.g. Google Scholar and Research Gate





Battulga Munkhbat, Andrew B. Yankovich, Ruggero Verre, Eva Olsson and Timur Shegai
Transition metal dichalcogenide materials with atomic precision





Denis G. Baranov, Battulga Munkhbat, Elena Zhukova, Benjamin Rousseaux, Ankit Bisht, Adriana Canales, Göran Johansson, Tomasz Antosiewicz and Timur Shegai
Ultrastrong coupling between nanoparticle plasmons and cavity photons at ambient conditions
Nature Communications (2020)​




D.I. Markina, E. Yu Tiguntseva, A.P Pushkarev, M.A. Samsonov, M. Vengris, B. Munkhbat, T. Shegai, G.B. Hix, A.A. Zakhidov and S.V. Makarov
Photophysical properties of halide perovskite CsPb(Br(1-X)IX)3 thin films and nanowires
Journal of Luminescence (2020)​



Battulga Munkhbat, Denis G. Baranov, Ankit Bisht, Md Anamul Hoque, Bodgan Karpiak, Saroj P. Dash and Timur Shegai
Electrical Control of Hybrid Monolayer Tungsten Disulfide-Plasmonic Nanoantenna Light-Matter States at Cryogenic and Room Temperatures
ACS Nano (2020)

Denis_Dichr.PNG
Denis G. Baranov, Battulga Munkhbat, Nils Odebo Länk, Ruggero Verre, Mikael Käll and Timur Shegai
Circular Dichroism Mode Splitting and Bounds to its Enhancement With Cavity-Plasmon-Polaritons
Nanophotonics (2019)


Martin_ACSPhot.PNG


Martin Wersäll, Battulga Munkhbat, Denis G. Baranov, Felipe Herrera, Jianshu Cao, Tomasz J. Antosiewicz and Timur Shegai
Correlative Dark-Field and Photoluminescence Spectroscopy of Individual Plasmon-Molecule Hybrid Nanosctructures in a Strong Coupling Regime
ACS Photonics (2019)


 
 
Denis G. Baranov, Yuzhe Xiao, Igor A. Nechepurenko, Alex Krasnok, Andrea Alu and Mikhail A. Kats
Nanophotonic engineering of far-field thermal emitters
Nature Materials (2019)




Andrew B. Yankovich, Battulga Mu​nkhbat, Denis G. Baranov, Jorge Cuadra, Hugo Lourenco-Martins, Luis H. G. Tizei, Mathieu Kociak, Eva Olsson and Timur Shegai
Visualizing plasmon-exciton polaritons at the nanoscale using electron microscopy 
Nanoletters



Tuomas P. Rossi, Timur Shegai, Paul Erhart and Tomasz J. Antosiewicz
Strong plasmon-molecule coupling at the nanoscale revealed by first-principles modeling 
Nature Communications (2019)

vdW nanodisk.png

Ruggero Verre, Denis G. Baranov, Battulga Munkhbat, Jorge Cuadra, Mikael Käll and Timur Shegai
Transition metal dichalcogenide nanodisks as high-index dielectric Mie nanoresonators 
Nature Nanotechnology (2019)


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A​nkit Bisht , Jorge Cuadra, Martin Wersäll, Adriana Canales, Tomasz J. Antosiewicz and Timur Shegai
Collective Strong Light-Matter Coupling in Hierarchical Microcavity-Plasmon-Exciton Systems 
Nano Letters (2018)



Battulga Munkhbat, Denis G. Baranov, Michael Stührenberg, Martin Wersäll, Ankit Bisht and Timur Shegai
Self-hybridized exciton-polaritons in multilayers of transition metal dichalcogenides for efficient light absorption 
ACS Photonics (2018)



 
 
Michael Stührenberg, Battulga Munkhbat, Denis G. Baranov, Jorge Cuadra, Andrew B. Yankovich, Tomasz J. Antosiewicz, Eva Olsson, and Timur Shegai
Strong Light-Matter Coupling between Plasmons in Individual Gold Bi-Pyramids and Excitons in Mono- and Multilayer WSe2 
Nano Letters (2018)
 

 
Ekaterina Y. Tiguntseva, Denis G. Baranov, Anatoly P. Pushkarev, Battulga Munkhbat, Filipp Komissarenko, Marius Franckevicius, Anvar A. Zakhidov, Timur Shegai, Yuri S. Kivshar, and Sergey V. Makarov
Tunable Hybrid Fano Resonances in Halide Perovskite Nanoparticles
Nano Letters (2018)
 

 
 
Benjamin Rosseaux, Denis G. Baranov, Mikael Käll, Timur Shegai, and Göran Johansson
Quantum Description and Emergence of Nonlinearities in Strongly Coupled Single-Emitter Nanoantenna Systems
Physical Review B (2018)
 


 
 
 
 
 
Battulga Munkhbat, Martin Wersäll, Denis G. Baranov, Tomasz J. Antosiewicz, and Timur Shegai
Suppression of Photo-Oxidation of Organic Chromophores by Strong Coupling to Plasmonic Nanoantennas
Science Advances (2018)
 

 
 
 
 
 
 
 
 
 
 
Jorge Cuadra, Denis G. Baranov, Martin Wersäll, Ruggero Verre, Tomasz J. Antosiewicz, and Timur Shegai
Observation of Tunable Charged Exciton Polaritons in Hybrid Monolayer WS2 - Plasmonic Nanoantenna System 
Nano Letters (2017)
DOI: 10.1021/acs.nanolett.7b04965
 
 
 


 

 
 
 
 
 
 
 
 
  Denis G. Baranov, Martin Wersäll, Jorge Cuadra, Tomasz J. Antosiewicz, and Timur Shegai 
Novel Nanostructures and Materials for Strong Light-Matter Interactions
ACS Photonics (2017)
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Denis G. Baranov, Alex Krasnok, Timur Shegai, Andrea Alù, and Yidong Chong 
Coherent Perfect Absorbers: Linear Control of Light with Light
Nature Review Materials (2017)
 
 
 
 
 
 
 
 
 
Jorge Cuadra, Ruggero Verre, Martin Wersäll, Clemens Krückel, Victor Torres-Company, Tomasz J. Antosiewicz, and Timur Shegai
Hybrid Dielectric Waveguide Spectroscopy of Individual Plasmonic Nanoparticles
AIP Advances (2017)
 












 
 
 
 

Martin Wersäll, Jorge Cuadra, Tomasz J. Antosiewicz, Sinan Balci, and Timur Shegai
Observation of Mode Splitting in Photoluminescence of Individual Plasmonic Nanoparticles
Strongly Coupled to Molecular Excitons

Nano Letters (2016)
DOI: 10.1021/acs.nanolett.6b04659









Zhong-Jian Yang, Tomasz J. Antosiewicz, and Timur Shegai
Role of Material Loss and Mode Volume of Plasmonic Cavities for Strong Plasmon-Exciton Interactions
Optics Express (2016)
DOI: 10.1364/OE.24.020373














Gülis Zengin, Tina Gschneidtner, Ruggero Verre, Lei Shao, Tomasz J. Antosiewicz, Kasper Moth-Poulsen, Mikael Käll, and Timur Shegai
Evaluating Conditions for Strong Coupling between Nanoparticle Plasmons and Organic Dyes Using Scattering and Absorption Spectroscopy
J. Phys. Chem. C. (2016)
http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.6b00219
 
 
 




 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Gülis Zengin, Martin Wersäll, Sara Nilsson, Tomasz J. Antosiewicz, Mikael Käll, and
Timur Shegai
Realizing Strong Light-Matter Interactions between Single-Nanoparticle Plasmons and
Molecular Excitons at Ambient Conditions
Phys. Rev. Lett. 114, 157401, (2015)
DOI: http://dx.doi.org/10.1103/PhysRevLett.114.157401





 
 
 
 
 
Martin Wersäll, Ruggero Verre, Mikael Svedendahl, Peter Johansson, Mikael Käll, and
Timur Shegai
Directional Nanoplasmonic Antennas for Self-Referenced Refractometric Molecular Analysis
J. Phys. Chem. C, 118, 21075-21080, (2014)
 
  


 
 
 
 
 
 
 
 
 
 
 
 
 
 
Tomasz J. Antosiewicz, S. Peter Apell, and Timur Shegai
Plasmon-Exciton Interactions in a Core-Shell Geometry: From Enhanced Absorption to
Strong Coupling
ACS Photonics, 1, 454-463, (2014)
 
 

 
 
 
 
 
 
 
 
 
 
Gülis Zengin, Göran Johansson, Peter Johansson, Tomasz J. Antosiewicz, Mikael Käll, and
Timur Shegai
Approaching the Strong Coupling Limit in Single Plasmonic Nanorods Interacting with J-aggregates
Scientific Reports 3, 3074, (2013)
 
 
 
 
Project Leader
 
Timur Shegai
 
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Published: Fri 10 Jul 2020.