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1.
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11 p, 6.0 MB |
A pre-time-zero spatiotemporal microscopy technique for the ultrasensitive determination of the thermal diffusivity of thin films
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Varghese, Sebin (Institut Català de Nanociència i Nanotecnologia) ;
Mehew, Jake Dudley (Institut Català de Nanociència i Nanotecnologia) ;
Block, Alexander (Institut Català de Nanociència i Nanotecnologia) ;
Saleta Reig, David (Institut Català de Nanociència i Nanotecnologia) ;
Woźniak, Pawel (Institut de Ciències Fotòniques) ;
Farris, Roberta (Institut Català de Nanociència i Nanotecnologia) ;
Zanolli, Zeila (Utrecht University) ;
Ordejon, Pablo (Institut Català de Nanociència i Nanotecnologia) ;
Verstraete, Matthieu J. (Université de Liège) ;
van Hulst, Niek F.. (Institut de Ciències Fotòniques) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Diffusion is one of the most ubiquitous transport phenomena in nature. Experimentally, it can be tracked by following point spreading in space and time. Here, we introduce a spatiotemporal pump-probe microscopy technique that exploits the residual spatial temperature profile obtained through the transient reflectivity when probe pulses arrive before pump pulses. [...]
2023 -  10.1063/5.0102855
Review of Scientific Instruments, Vol. 94, Issue 3 (March 2023) , art. 34903
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2.
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7 p, 3.3 MB |
Ultrafast Tunable Terahertz-to-Visible Light Conversion through Thermal Radiation from Graphene Metamaterials
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Ilyakov, Igor (Helmholtz-Zentrum Dresden-Rossendorf) ;
Ponomaryov, Alexey (Helmholtz-Zentrum Dresden-Rossendorf) ;
Saleta Reig, David (Institut Català de Nanociència i Nanotecnologia) ;
Murphy, Conor (University of Exeter) ;
Mehew, Jake Dudley (Institut Català de Nanociència i Nanotecnologia) ;
de Oliveira, Thales V. A. G (Helmholtz-Zentrum Dresden-Rossendorf) ;
Prajapati, Gulloo Lal (Helmholtz-Zentrum Dresden-Rossendorf) ;
Arshad, Atiqa (Helmholtz-Zentrum Dresden-Rossendorf) ;
Deinert, Jan-Christoph (Helmholtz-Zentrum Dresden-Rossendorf) ;
Craciun, Monica Felicia (University of Exeter) ;
Russo, Saverio (University of Exeter) ;
Kovalev, Sergey (Helmholtz-Zentrum Dresden-Rossendorf) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Several technologies, including photodetection, imaging, and data communication, could greatly benefit from the availability of fast and controllable conversion of terahertz (THz) light to visible light. [...]
2023 - 10.1021/acs.nanolett.3c00507
Nano letters, Vol. 23, Issue 9 (May 2023) , p. 3872-3878
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3.
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8 p, 1.5 MB |
Electron cooling in graphene enhanced by plasmon-hydron resonance
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Yu, Xiaoqing (Max Planck Institute for Polymer Research) ;
Principi, Alessandro (University of Manchester. School of Physics and Astronomy) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia) ;
Bonn, Mischa (Max Planck Institute for Polymer Research) ;
Kavokine, Nikita (Flatiron Institute. Center for Computational Quantum Physics)
Evidence is accumulating for the crucial role of a solid's free electrons in the dynamics of solid-liquid interfaces. Liquids induce electronic polarization and drive electric currents as they flow; electronic excitations, in turn, participate in hydrodynamic friction. [...]
2023 - 10.1038/s41565-023-01421-3
Nature Nanotechnology, Vol. 18, Issue 8 (August 2023) , p. 898-904
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4.
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8 p, 3.2 MB |
Reversible Electrical Control of Interfacial Charge Flow across van der Waals Interfaces
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Fu, Shuai (Max Planck Institute for Polymer Research (Germany)) ;
Jia, Xiaoyu (Max Planck Institute for Polymer Research (Germany)) ;
Hassan, Aliaa S. (Max Planck Institute for Polymer Research (Germany)) ;
Zhang, Heng (Max Planck Institute for Polymer Research (Germany)) ;
Zheng, Wenhao (Max Planck Institute for Polymer Research (Germany)) ;
Gao, Lei (Max Planck Institute for Polymer Research (Germany)) ;
Di Virgilio, Lucia (Max Planck Institute for Polymer Research (Germany)) ;
Krasel, Sven (Max Planck Institute for Polymer Research (Germany)) ;
Beljonne, David (Université de Mons) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia) ;
Bonn, Mischa (Max Planck Institute for Polymer Research (Germany)) ;
Wang, Hai I. (Max Planck Institute for Polymer Research (Germany))
Bond-free integration of two-dimensional (2D) materials yields van der Waals (vdW) heterostructures with exotic optical and electronic properties. Manipulating the splitting and recombination of photogenerated electron-hole pairs across the vdW interface is essential for optoelectronic applications. [...]
2023 - 10.1021/acs.nanolett.2c04795
Nano letters, Vol. 23, Issue 5 (March 2023) , p. 1850-1857
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5.
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36 p, 8.6 MB |
Hot carriers in graphene-fundamentals and applications
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Massicotte, Mathieu (Université de Sherbrooke. Département de Physique) ;
Soavi, Giancarlo (Friedrich-Schiller-Universität Jena. Institut für Festkörperphysik) ;
Principi, Alessandro (University of Manchester. School of Physics and Astronomy) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Hot charge carriers in graphene exhibit fascinating physical phenomena, whose understanding has improved greatly over the past decade. They have distinctly different physical properties compared to, for example, hot carriers in conventional metals. [...]
2021 - 10.1039/d0nr09166a
Nanoscale, Vol. 13, issue 18 (May 2021) , p. 8376-8411
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6.
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6 p, 1.0 MB |
Terahertz signatures of ultrafast Dirac fermion relaxation at the surface of topological insulators
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Kovalev, Sergey (Helmholtz-Zentrum Dresden-Rossendorf) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia) ;
Deinert, Jan-Christoph (Helmholtz-Zentrum Dresden-Rossendorf) ;
Ilyakov, Igor (Helmholtz-Zentrum Dresden-Rossendorf) ;
Awari, Nilesh (Helmholtz-Zentrum Dresden-Rossendorf) ;
Chen, Min (Helmholtz-Zentrum Dresden-Rossendorf) ;
Ponomaryov, Alexey N. (Helmholtz-Zentrum Dresden-Rossendorf) ;
Bawatna, Mohammed (Helmholtz-Zentrum Dresden-Rossendorf) ;
de Oliveira, T.V.A.G. (Technische Universität Dresden) ;
Eng, Lukas (Technische Universität Dresden) ;
Kuznetsov, Kirill (Lomonosov Moscow State University) ;
Safronenkov, D.A. (Lomonosov Moscow State University) ;
Kitaeva, Galiya (Lomonosov Moscow State University) ;
Kuznetsov, P.I. (Kotelnikov IRE RAS) ;
Hafez, Hassan A. (Universität Bielefeld. Fakultät für Physik) ;
Turchinovich, Dmitry (Universität Bielefeld. Fakultät für Physik) ;
Gensch, Michael (Technische Universität Berlin)
Topologically protected surface states present rich physics and promising spintronic, optoelectronic, and photonic applications that require a proper understanding of their ultrafast carrier dynamics. [...]
2021 - 10.1038/s41535-021-00384-9
npj Quantum Materials, Vol. 6 (2021) , art. 84
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7.
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12 p, 2.2 MB |
Fabrication and characterization of large-area suspended MoSe2 crystals down to the monolayer
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Varghese, Sebin (Institut Català de Nanociència i Nanotecnologia) ;
Saleta Reig, David (Institut Català de Nanociència i Nanotecnologia) ;
Mehew, Jake D. (Institut Català de Nanociència i Nanotecnologia) ;
Block, Alexander (Institut Català de Nanociència i Nanotecnologia) ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ;
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ;
Ballesteros, Belén (Institut Català de Nanociència i Nanotecnologia) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Many layered materials, such as graphene and transition metal dichalcogenides, can be exfoliated down to atomic or molecular monolayers. These materials exhibit exciting material properties that can be exploited for several promising device concepts. [...]
2021 - 10.1088/2515-7639/ac2060
JPhys materials, Vol. 4, issue 4 (Oct. 2021) , art. 46001
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8.
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8 p, 803.6 KB |
Milliwatt terahertz harmonic generation from topological insulator metamaterials
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Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia) ;
Principi, Alessandro (University of Manchester. School of Physics and Astronomy) ;
Saleta Reig, David (Institut Català de Nanociència i Nanotecnologia) ;
Block, Alexander (Institut Català de Nanociència i Nanotecnologia) ;
Varghese, Sebin (Institut Català de Nanociència i Nanotecnologia) ;
Schreyeck, Steffen (Universität Würzburg. Physikalisches Institut) ;
Brunner, Karl (Universität Würzburg. Physikalisches Institut) ;
Karczewski, Grzegorz (Universität Würzburg. Physikalisches Institut) ;
Ilyakov, Igor (Helmholtz-Zentrum Dresden-Rossendorf) ;
Ponomaryov, Oleksiy (Helmholtz-Zentrum Dresden-Rossendorf) ;
de Oliveira, Thales V. A. G. (Helmholtz-Zentrum Dresden-Rossendorf) ;
Chen, Min (Helmholtz-Zentrum Dresden-Rossendorf) ;
Deinert, Jan-Christoph (Helmholtz-Zentrum Dresden-Rossendorf) ;
Gómez Carbonell, Carmen (Institut Català de Nanociència i Nanotecnologia) ;
Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ;
Molenkamp, Laurens W. (Universität Würzburg. Physikalisches Institut) ;
Kiessling, Tobias (Universität Würzburg. Physikalisches Institut) ;
Astakhov, Georgy V. (Helmholtz-Zentrum Dresden-Rossendorf) ;
Kovalev, Sergey (Helmholtz-Zentrum Dresden-Rossendorf)
Achieving efficient, high-power harmonic generation in the terahertz spectral domain has technological applications, for example, in sixth generation (6G) communication networks. Massless Dirac fermions possess extremely large terahertz nonlinear susceptibilities and harmonic conversion efficiencies. [...]
2022 - 10.1038/s41377-022-01008-y
Light, Science & Applications, Vol. 11 (2022)
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9.
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9 p, 2.0 MB |
Unraveling heat transport and dissipation in suspended MoSe2 from bulk to monolayer
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Saleta Reig, David (Institut Català de Nanociència i Nanotecnologia) ;
Varghese, Sebin (Institut Català de Nanociència i Nanotecnologia) ;
Farris, Roberta (Institut Català de Nanociència i Nanotecnologia) ;
Block, Alexander (Institut Català de Nanociència i Nanotecnologia) ;
Mehew, Jake D. (Institut Català de Nanociència i Nanotecnologia) ;
Hellman, Olle (Weizmann Institute of Science (Israel). Department of Molecular Chemistry and Materials Science) ;
Woźniak, Pawel (Institut de Ciències Fotòniques) ;
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ;
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Valenzuela, Sergio O. (Institut Català de Nanociència i Nanotecnologia) ;
van Hulst, Niek F.. (Institut de Ciències Fotòniques) ;
Ordejon, Pablo (Institut Català de Nanociència i Nanotecnologia) ;
Zanolli, Zeila (Debye Institute for Nanomaterials Science) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Verstraete, Matthieu J. (European Theoretical Spectroscopy Facility) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia)
Understanding heat flow in layered transition metal dichalcogenide (TMD) crystals is crucial for applications exploiting these materials. Despite significant efforts, several basic thermal transport properties of TMDs are currently not well understood, in particular how transport is affected by material thickness and the material's environment. [...]
2022 - 10.1002/adma.202108352
Advanced materials, Vol. 34, issue 10 (March 2022) , art. 2108352
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10.
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12 p, 3.1 MB |
Electrically tunable nonequilibrium optical response of graphene
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Pogna, Eva A. A. (Politecnico di Milano. Dipartimento di Fisica) ;
Tomadin, Andrea (Università di Pisa. Dipartimento di Fisica) ;
Balci, Osman (University of Cambridge. Cambridge Graphene Centre) ;
Soavi, Giancarlo (University of Cambridge. Cambridge Graphene Centre) ;
Paradisanos, Ioannis (University of Cambridge. Cambridge Graphene Centre) ;
Guizzardi, Michele (Politecnico di Milano. Dipartimento di Fisica) ;
Pedrinazzi, Paolo (Politecnico di Milano. Dipartimento di Fisica) ;
Mignuzzi, Sandro (University of Cambridge. Cambridge Graphene Centre) ;
Tielrooij, Klaas-Jan (Institut Català de Nanociència i Nanotecnologia) ;
Polini, Marco (Università di Pisa. Dipartimento di Fisica) ;
Ferrari, Andrea C. (University of Cambridge. Cambridge Graphene Centre) ;
Cerullo, Giulio (Politecnico di Milano. Dipartimento di Fisica)
The ability to tune the optical response of a material via electrostatic gating is crucial for optoelectronic applications, such as electro-optic modulators, saturable absorbers, optical limiters, photodetectors, and transparent electrodes. [...]
2022 - 10.1021/acsnano.1c04937
ACS nano, Vol. 16, issue 3 (March 2022) , p. 3613-3624
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