News & Updates


Schottky Prize for Kaiqiang Lin


Kekulé's nightmare - snakes and ladders


Negative-mass electrons in WSe2


Triplet quenching reported in Science


Twinkle, twinkle little star - counting single molecules

Follow the construction of our RUN building

Kai-Qiang Lin, Dr.

Faculty of Physics
Institute of Experimental and Applied Physics
University of Regensburg
93040 Regensburg

Office: PHY 2.1.24
Phone: +49 941 943-2076
Fax: +49 941 943-4226
Personal homepage:

Academic Education and Professional Experience

2020.01– Akademischer Rat a.Z. (Academic Council), University of Regensburg, Germany
2018.05–2019.12 Postdoctoral researcher (Prof. John Lupton), Institute of Experimental and Applied Physics, University of Regensburg, Germany
2016.03–2016.09 Visiting researcher (Prof. Markus Raschke), University of Colorado at Boulder/JILA, USA
2014.07–2014.08 Visiting researcher (Prof. Javier Aizpurua), Donostia international physics center (DIPC), Spain
2013.09–2018.05 PhD, Xiamen University, China (Prof. Bin Ren)
2009.09–2013.06 BSc, Xiamen University, China

Research Interests

Further Activities, Awards and Scholarships

2023 Walter-Schottky-Preis.
2019 Selected young scientist for 69th Nobel Laureate Meeting in Lindau.
2019 SFB 1277 Member.
2017 Young Scientists Stipend for International Symposium "20 Years Nano-Optics" in Erlangen.


2021–2025 German research foundation (DFG), SFB 1277, B11 (project leader)
2021–2023 Sino-German Center, Mobility Programme M-0153 (project leader)
2020–2023 German research foundation (DFG), SPP 2244, ID-443378379 (project leader)


  • K.-Q. Lin, J. D. Ziegler, M. Semina, J. Mamedov, K. Watanabe, T. Taniguchi, S. Bange, A. Chernikov, M. Glazov, J. M. Lupton
    "High-lying valley-polarized trions in 2D semiconductors"
    Nature Commun., 13, 6980 (2022).
  • J. Bauer, L. Chen, P. Wilhelm, K. Watanabe, T. Taniguchi, S. Bange, J. Lupton, and K.-Q. Lin
    "Excitonic resonances control the temporal dynamics of nonlinear optical wave mixing in monolayer semiconductors"
    Nature Photon., 16, 777-783 (2022).
  • L. Bauriedl, C. Bäuml, L. Fuchs, C. Baumgartner, N. Paulik, J. Bauer, K.-Q. Lin, J. Lupton, T. Taniguchi, K. Watanabe, C. Strunk, and N. Paradiso
    "Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe2"
    Nature Commun. 13, 4266 (2022).
  • S.-S. Wu, T.-X. Huang, X. Xu, Y.-F. Bao, X.-D. Pei, X. Yao, M.-F. Cao, K.-Q. Lin, X. Wang, D. Wang, and B. Ren
    "Quantitatively Deciphering Electronic Properties of Defects at Atomically Thin Transition-Metal Dichalcogenides"
    ACS Nano, 16, 3, 4786 (2022).
  • K.-Q. Lin, C. S. Ong, S. Bange, P. E. Faria Junior, B. Peng, J. D. Ziegler, J. Zipfel, C. Bäuml, N. Paradiso, K. Watanabe, T. Taniguchi, C. Strunk, B. Monserrat, J. Fabian, A. Chernikov, D. Y. Qiu, S. G. Louie, and J. M. Lupton
    "Narrow-band transitions from high-lying excitons in monolayer WSe2"
    Nature Commun. 12, 5500 (2021).
  • Kai-Qiang Lin, Johannes Holler, Jonas M. Bauer, Philipp Parzefall, Marten Scheuck, Bo Peng, Tobias Korn, Sebastian Bange, John M. Lupton, Christian Schüller
    "Large-Scale Mapping of Moire Superlattices by Hyperspectral Raman Imaging"
    Adv. Mater. 33, 2008333 (2021).
  • Robert Wallauer, Raul Perea-Causin, Lasse Münster, Sarah Zajusch, Samuel Brem, Jens Güdde, Katsumi Tanimura, Kai-Qiang Lin, Rupert Huber, Ermin Malic, Ulrich Höfer
    "Momentum-Resolved Observation of Exciton Formation Dynamics in Monolayer WS2"
    Nano Lett. 21, 5867 (2021).
  • K.-Q. Lin
    "A roadmap for interlayer excitons"
    Light Sci. Appl., 10, 99 (2021).
  • P. Parzefall, J. Holler, M. Scheuck, A. Beer, K-Q. Lin, B. Peng, B. Monserrat, P. Nagler, M. Kempf, T. Korn, and C. Schüller
    "Moire phonons in twisted MoSe2-WSe2 heterobilayers and their correlation with interlayer excitons"
    2D Mater., 8, 035030 (2021).
  • K.-Q. Lin, P. E. Faria Junior, J. M. Bauer, B. Peng, B. Monserrat, M. Gmitra, J. Fabian, S. Bange, and J. M. Lupton
    "Twist-angle engineering of excitonic quantum interference and optical nonlinearities in stacked 2D semiconductors"
    Nature Comm. 12, 1553 (2021).
  • P. Merkl, F. Mooshammer, S. Brem, A. Girnghuber, K.-Q. Lin, L. Weigl, M. Liebich, C.-K. Yong, R. Gillen, J. Maultzsch, J. M. Lupton, E. Malic, and R. Huber
    "Twist-tailoring Coulomb correlations in van der Waals homobilayers"
    Nature Comm. 11, 2167 (2020).
  • S. Brem, K.-Q. Lin, R. Gillen, J. Bauer, J. Maultzsch, J. M. Lupton, and E. Malic
    "Hybridized intervalley moiré excitons and flat bands in twisted WSe2 bilayers"
    Nanoscale online (2020).
  • Kai-Qiang Lin, Robert Martin, Sebastian Bange, John M. Lupton*
    "Polymer coatings tune electromagnetically induced transparency in two-dimensional semiconductors"
    ACS Photonics 6, 3115 (2019).
  • Tengxiang Huang, Xin Cong, Si-Si Wu, Kai-Qiang Lin, Xu Yao, Yu-han He, Jiang-Bin Wu, Yi-Fan Bao, Sheng-Chao Huang, Xiang Wang*, Ping-Heng Tan*, and Bin Ren*
    "Probing the edge-related properties of atomically thin MoS2 at nanoscale"
    Nature Commun. 10, 5544 (2019).
  • Kai-Qiang Lin*, Sebastian Bange, John M. Lupton*
    "Quantum Interference in Second-Harmonic Generation from Monolayer WSe2"
    Nature Phys. 15, 242 (2019).
  • P. Merkl, F. Mooshammer, P. Steinleitner, A. Girnghuber, K.-Q. Lin, P. Nagler, J. Holler, C. Schuller, J. M. Lupton, T. Korn, S. Ovesen, S. Brem, E. Malic* and R. Huber*
    "Ultrafast transition between exciton phases in van der Waals heterostructures"
    Nature Mater. 18, 691 (2019).
  • Si-Si Wu, Teng-Xiang Huang, Kai-Qiang Lin, Xu Yao, Jing-Ting Hu, Ding-Liang Tang, Yi-Fan Bao, Bin Ren*
    "Photo-induced exfoliation of monolayer transition metal dichalcogenide semiconductors"
    2D Mater., 6, 045052 (2019).
  • Shu Hu, Bi-Ju Liu, Jia-Min Feng, Cheng Zong, Kai-Qiang Lin, Xiang Wang, De-Yin Wu, Bin Ren*
    "Carbon Quantifying Surface Temperature of Thermoplasmonic Nanostructures"
    J. Am. Chem. Soc. 140, 13680 (2018).
  • Teng-Xiang Huang, Cha-Wei Li, Li-Kun Yang, Jin-Feng Zhu, Xu Yao, Chuan Liu, Kai-Qiang Lin, Zhi-Cong Zeng, Si-Si Wu, Xiang Wang, Fang-Zu Yang, Bin Ren*
    "Rational Fabrication of Silver-coated AFM TERS Tips with a High Enhancement and Long Lifetime"
    Nanoscale. 10, 4398 (2018).
  • Kai-Qiang Lin, Jun Yi, Jin-Hui Zhong, Shu Hu, Biju Liu, Jun-Yang Liu, Cheng Zong, Zhichao Lei, Xiang Wang*, Javier Aizpurua, Ruben Esteban*, Bin Ren*
    "Plasmonic Photoluminescence for Recovering Native Chemical Information from Surface Enhanced Raman Scattering"
    Nature Commun. 8, 14891 (2017).
  • Kai-Qiang Lin, Jun Yi, Shu Hu, Juanjuan Sun, Jueting Zheng, Xiang Wang, and Bin Ren*
    "Intraband Hot-electron Photoluminescence from Single Silver Nanorods"
    ACS Photonics. 3, 1248 (2016).
  • Kai-Qiang Lin, Jun Yi, Shu Hu, Bi-Ju Liu, Jun-Yang Liu, Xiang Wang, and Bin Ren*
    "Size Effect on SERS of Gold Nanorods Demonstrated via Single Nanoparticle Spectroscopy"
    J. Phys. Chem. C. 120, 20806 (2016).
  • Bi-Ju Liu, Kai-Qiang Lin, Shu Hu, Xiang Wang, Zhi-Chao Lei, Hai-Xin Lin, and Bin Ren*
    "Extraction of Absorption and Scattering Contribution of Metallic Nanoparticles Toward Rational Synthesis and Application"
    Anal. Chem. 82, 1058 (2015).
  • Chengyi Hu, Kaiqiang Lin, Xingli Wang, Shengjie Liu, Jun Yi, Yu Tian, Binghui Wu, Guangxu Chen, Huayan Yang, Yan Dai, Huan Li, and Nanfeng Zheng*
    "Electrostatic Self-Assembling Formation of Pd Superlattice Nanowires from Surfactant-Free Ultrathin Pd Nanosheets"
    J. Am. Chem. Soc. 136, 12856 (2014).
  • Xiang Wang, Mao-Hua Li, Ling-Yan Meng, Kai-Qiang Lin, Jia-Min Feng, Teng-Xiang Huang, Zhi-Lin Yang* and Bin Ren*
    "Probing the Location of Hot Spots by Surface-Enhanced Raman Spectroscopy: toward Uniform Substrates"
    ACS Nano, 8, 528 (2014).
  • Yan Dai, Xiaoliang Mu, Yueming Tan, Kaiqiang Lin, Zhilin Yang*, and Nanfeng Zheng*
    "Carbon Monoxide-Assisted Synthesis of Single-Crystalline Pd Tetrapod Nanocrystals through Hydride Formation"
    J. Am. Chem. Soc. 134, 7073 (2012).