Ultrafast Dynamics in Nanoscale Systems

Group Leader: Klaas-Jan Tielrooij

Klaas-Jan Tielrooij

Group Leader


Group Leader

Klaas-Jan Tielrooij is Group Leader at the ICN2 since October 2018, heading the Ultrafast Dynamics in Nanoscale Systems group. Between 2018 and 2020, he was Visiting Professor at the Graduate School of Excellence Material Science in Mainz (Germany). Before joining the ICN2, he was a research fellow at the Institute of Photonic Sciences (ICFO). He obtained his Ph.D. from the University of Amsterdam (the Netherlands) in December 2010 with a thesis that was awarded the FOM Physics Thesis Prize 2011. He was awarded an ERC Starting Grant in 2018, and a Ramon y Cajal Fellowship in 2019.

Dr Tielrooij has authored more than 55 peer-reviewed publications, 19 of which in the Nature and Science family, and around 7,000 citations. His H-index is currently 31 (11 years after PhD).



  • Electrically Tunable Nonequilibrium Optical Response of Graphene

    Pogna E.A.A., Tomadin A., Balci O., Soavi G., Paradisanos I., Guizzardi M., Pedrinazzi P., Mignuzzi S., Tielrooij K.-J., Polini M., Ferrari A.C., Cerullo G. ACS Nano; 16 (3): 3613 - 3624. 2022. 10.1021/acsnano.1c04937. IF: 15.881

  • Unraveling Heat Transport and Dissipation in Suspended MoSe2 from Bulk to Monolayer

    Saleta Reig D., Varghese S., Farris R., Block A., Mehew J.D., Hellman O., Woźniak P., Sledzinska M., El Sachat A., Chávez-Ángel E., Valenzuela S.O., van Hulst N.F., Ordejón P., Zanolli Z., Sotomayor Torres C.M., Verstraete M.J., Tielrooij K.-J. Advanced Materials; 34 (10, 2108352) 2022. 10.1002/adma.202108352. IF: 30.849


  • Decoupling the effects of defects on efficiency and stability through phosphonates in stable halide perovskite solar cells

    Xie H., Wang Z., Chen Z., Pereyra C., Pols M., Gałkowski K., Anaya M., Fu S., Jia X., Tang P., Kubicki D.J., Agarwalla A., Kim H.-S., Prochowicz D., Borrisé X., Bonn M., Bao C., Sun X., Zakeeruddin S.M., Emsley L., Arbiol J., Gao F., Fu F., Wang H.I., Tielrooij K.-J., Stranks S.D., Tao S., Grätzel M., Hagfeldt A., Lira-Cantu M. Joule; 5 (5): 1246 - 1266. 2021. 10.1016/j.joule.2021.04.003. IF: 41.248

  • Electrical tunability of terahertz nonlinearity in graphene

    Kovalev S., Hafez H.A., Tielrooij K.-J., Deinert J.-C., Ilyakov I., Awari N., Alcaraz D., Soundarapandian K., Saleta D., Germanskiy S., Chen M., Bawatna M., Green B., Koppens F.H.L., Mittendorff M., Bonn M., Gensch M., Turchinovich D. Science Advances; 7 (15, eabf9809) 2021. 10.1126/SCIADV.ABF9809. IF: 14.143

  • Fabrication and characterization of large-area suspended MoSe2 crystals down to the monolayer

    Varghese S., Reig D.S., Mehew J.D., Block A., El Sachat A., Chávez-Ángel E., Sledzinska M., Ballesteros B., Sotomayor Torres C.M., Tielrooij K.-J. JPhys Materials; 4 (4, 046001) 2021. 10.1088/2515-7639/ac2060. IF: 0.000

  • Grating-Graphene Metamaterial as a Platform for Terahertz Nonlinear Photonics

    Deinert J.-C., Alcaraz Iranzo D., Pérez R., Jia X., Hafez H.A., Ilyakov I., Awari N., Chen M., Bawatna M., Ponomaryov A.N., Germanskiy S., Bonn M., Koppens F.H.L., Turchinovich D., Gensch M., Kovalev S., Tielrooij K.-J. ACS Nano; 15 (1): 1145 - 1154. 2021. 10.1021/acsnano.0c08106. IF: 15.881

  • Hot carriers in graphene-fundamentals and applications

    Massicotte M., Soavi G., Principi A., Tielrooij K.-J. Nanoscale; 13 (18): 8376 - 8411. 2021. 10.1039/d0nr09166a. IF: 7.790

  • Hot plasmons make graphene shine

    Koppens F.H.L., Tielrooij K.-J. Nature Materials; 20 (6): 721 - 722. 2021. 10.1038/s41563-021-00952-1. IF: 43.841

  • Hot-Carrier Cooling in High-Quality Graphene Is Intrinsically Limited by Optical Phonons

    Pogna E.A.A., Jia X., Principi A., Block A., Banszerus L., Zhang J., Liu X., Sohier T., Forti S., Soundarapandian K., Terrés B., Mehew J.D., Trovatello C., Coletti C., Koppens F.H.L., Bonn M., Wang H.I., Van Hulst N., Verstraete M.J., Peng H., Liu Z., Stampfer C., Cerullo G., Tielrooij K.-J. ACS Nano; 15 (7): 11285 - 11295. 2021. 10.1021/acsnano.0c10864. IF: 15.881

  • Long-lived charge separation following pump-wavelength–dependent ultrafast charge transfer in graphene/WS2 heterostructures

    Fu S., du Fossé I., Jia X., Xu J., Yu X., Zhang H., Zheng W., Krasel S., Chen Z., Wang Z.M., Tielrooij K.-J., Bonn M., Houtepen A.J., Wang H.I. Science Advances; 7 (9, eabd9061) 2021. 10.1126/sciadv.abd9061. IF: 14.143

  • Observation of giant and tunable thermal diffusivity of a Dirac fluid at room temperature

    Block A., Principi A., Hesp N.C.H., Cummings A.W., Liebel M., Watanabe K., Taniguchi T., Roche S., Koppens F.H.L., van Hulst N.F., Tielrooij K.-J. Nature Nanotechnology; 16 (11): 1195 - 1200. 2021. 10.1038/s41565-021-00957-6. IF: 39.213

  • Terahertz signatures of ultrafast Dirac fermion relaxation at the surface of topological insulators

    Kovalev S., Tielrooij K.-J., Deinert J.-C., Ilyakov I., Awari N., Chen M., Ponomaryov A., Bawatna M., de Oliveira T.V.A.G., Eng L.M., Kuznetsov K.A., Safronenkov D.A., Kitaeva G.K., Kuznetsov P.I., Hafez H.A., Turchinovich D., Gensch M. npj Quantum Materials; 6 (1, 84) 2021. 10.1038/s41535-021-00384-9. IF: 7.032

  • Thickness-Dependent Elastic Softening of Few-Layer Free-Standing MoSe2

    Babacic V., Saleta Reig D., Varghese S., Vasileiadis T., Coy E., Tielrooij K.-J., Graczykowski B. Advanced Materials; 33 (23, 2008614) 2021. 10.1002/adma.202008614. IF: 30.849


  • Fast electrical modulation of strong near-field interactions between erbium emitters and graphene

    Cano D., Ferrier A., Soundarapandian K., Reserbat-Plantey A., Scarafagio M., Tallaire A., Seyeux A., Marcus P., Riedmatten H., Goldner P., Koppens F.H.L., Tielrooij K.-J. Nature Communications; 11 (1, 4094) 2020. 10.1038/s41467-020-17899-7. IF: 12.121

  • Plasmonic antenna coupling to hyperbolic phonon-polaritons for sensitive and fast mid-infrared photodetection with graphene

    Castilla S., Vangelidis I., Pusapati V.-V., Goldstein J., Autore M., Slipchenko T., Rajendran K., Kim S., Watanabe K., Taniguchi T., Martín-Moreno L., Englund D., Tielrooij K.-J., Hillenbrand R., Lidorikis E., Koppens F.H.L. Nature Communications; 11 (1, 4872) 2020. 10.1038/s41467-020-18544-z. IF: 12.121

  • Terahertz Nonlinear Optics of Graphene: From Saturable Absorption to High-Harmonics Generation

    Hafez H.A., Kovalev S., Tielrooij K.-J., Bonn M., Gensch M., Turchinovich D. Advanced Optical Materials; 8 (3, 1900771) 2020. 10.1002/adom.201900771. IF: 8.286


  • Control of Terahertz Nonlinearity in Graphene by Gating

    Hafez H.A., Tielrooij K.-J., Bonn M., Turchinovich D. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; 2019-September (8874288) 2019. 10.1109/IRMMW-THz.2019.8874288.

  • Fast and Sensitive Terahertz Detection Using an Antenna-Integrated Graphene pn Junction

    Castilla S., Terrés B., Autore M., Viti L., Li J., Nikitin A.Y., Vangelidis I., Watanabe K., Taniguchi T., Lidorikis E., Vitiello M.S., Hillenbrand R., Tielrooij K.-J., Koppens F.H.L. Nano Letters; 19 (5): 2765 - 2773. 2019. 10.1021/acs.nanolett.8b04171. IF: 12.279

  • Ionic permeability and interfacial doping of graphene on SiO2 measured with Terahertz photoconductivity measurements

    Jia X., Tielrooij K.-J., Bonn M., Wang H.I. International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; 2019-September (8874148) 2019. 10.1109/IRMMW-THz.2019.8874148.

  • Kinetic Ionic Permeation and Interfacial Doping of Supported Graphene

    Jia X., Hu M., Soundarapandian K., Yu X., Liu Z., Chen Z., Narita A., Müllen K., Koppens F.H.L., Jiang J., Tielrooij K.-J., Bonn M., Wang H.I. Nano Letters; 19 (12): 9029 - 9036. 2019. 10.1021/acs.nanolett.9b04053. IF: 12.279

  • Surface-Specific Spectroscopy of Water at a Potentiostatically Controlled Supported Graphene Monolayer

    Dreier L.B., Liu Z., Narita A., Van Zadel M.-J., Müllen K., Tielrooij K.-J., Backus E.H.G., Bonn M. Journal of Physical Chemistry C; 123 (39): 24031 - 24038. 2019. 10.1021/acs.jpcc.9b05844. IF: 4.309

  • Ultrathin Eu- and Er-Doped Y2O3 Films with Optimized Optical Properties for Quantum Technologies

    Scarafagio M., Tallaire A., Tielrooij K.-J., Cano D., Grishin A., Chavanne M.-H., Koppens F.H.L., Ringuedé A., Cassir M., Serrano D., Goldner P., Ferrier A. Journal of Physical Chemistry C; 123 (21): 13354 - 13364. 2019. 10.1021/acs.jpcc.9b02597. IF: 4.309

More publications by Dr Klaas-Jan Tielrooij