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X-WR-CALNAME:GRK 2905 - Ultrafast Nanoscopy
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251121T140000
DTEND;TZID=Europe/Berlin:20251121T150000
DTSTAMP:20260326T162255Z
CREATED:20250918T091414Z
LAST-MODIFIED:20260326T162255Z
UID:1774-1763733600-1763737200@grk2905.de
SUMMARY:RTG Colloquium:Prof. Dr. Miriam Vitiello
DESCRIPTION:Detector-less near-field quantum nanoscopy in the far-infraredNEST\, CNR – Istituto Nanoscienze and Scuola Normale Superiore\, Pisa\, Italy \n\n\n\nNear-field nanoscopy at terahertz (THz) frequencies (wavelength range\, 3 mm – 3 µm) enables studies of objects over a large span of scales – from 300 µm to the nanometer scale – and disciplines\, from physics to biological science. The talk will show the potential of a series of near-field nanoimaging approaches that\, while exploiting the same core building block (a detector-less QCL-based nanoscope)\, rely on different physical mechanism for imaging reconstruction. I will also highlight their potential for tracing the realspace propagation of THz-frequency polaritons in isotropic and anisotropic nanomaterials and meta-elements. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-prof-dr-miriam-vititello/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/webp:https://grk2905.de/wp-content/uploads/2025/09/MiriamVitiello-e1758186925309.webp
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251128T140000
DTEND;TZID=Europe/Berlin:20251128T160000
DTSTAMP:20251031T111148Z
CREATED:20250918T091922Z
LAST-MODIFIED:20251031T111148Z
UID:1777-1764338400-1764345600@grk2905.de
SUMMARY:Special lecture: Prof. Dr. Sebastian Loth
DESCRIPTION:Stochastic and coherent dynamics of spins and electrons at the atomic scaleInstitute for Functional Matter and Quantum Technologies\, University of Stuttgart \n\n\n\n \n\n\n\nMany fascinating phenomena at the atomic scale\, such as energy transfer between quantumsystems or collective behavior of electrons in correlated materials\, remain hidden to staticmeasurements. The combination of ultrafast spectroscopy with scanning probe microscopypresents a unique opportunity to study the dynamics of matter locally at its intrinsic length andtime scales. This lecture introduces recent advances using all-electronic microwave spectroscopy to capture quantum dynamics of magnetic atoms and small quantum magnets\, as well as lightcoupled THz pump-probe techniques with femtosecond resolution that reveal phonon propagation and collective excitations in charge-density wave materials. \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-prof-dr-sebastian-loth/
CATEGORIES:Special lecture series
ATTACH;FMTTYPE=image/png:https://grk2905.de/wp-content/uploads/2025/09/SebastianLoth.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251202T141500
DTEND;TZID=Europe/Berlin:20251202T151500
DTSTAMP:20260326T162238Z
CREATED:20251106T152233Z
LAST-MODIFIED:20260326T162238Z
UID:1845-1764684900-1764688500@grk2905.de
SUMMARY:RTG Colloquium:Prof. Dr. Jim Freericks
DESCRIPTION:How to describe pump-probe experiments in quantum materialsGeorgetown University\, Washington\, USA \n\n\n\n \n\n\n\nI will describe both the challenges\, and how to address them\, when theoretically modelling ultrafast pump-probe experiments in strongly correlated materials and in materials with strong electron-phonon coupling. After providing an introduction\, I will focus on three case studies: (i) examining the response at picosecond times of charge-density waves with ultrashort pulses that drive the electrons; (ii) examining the response on femtosecond times for nonresonant electronic Raman scattering; and (iii) examining how one can measure correlated charge dynamics in f-electronsystems using x-ray photoemission spectroscopy and x-ray absorption spectroscopy. \n\n\n\n \n\n\n\n \n\n\n\nVenue: H34
URL:https://grk2905.de/event/grk-colloquium-prof-dr-jim-freericks-2/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2025/11/Jim_freericks.jpeg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251204T151500
DTEND;TZID=Europe/Berlin:20251204T161500
DTSTAMP:20260326T162312Z
CREATED:20251120T130908Z
LAST-MODIFIED:20260326T162312Z
UID:1858-1764861300-1764864900@grk2905.de
SUMMARY:RTG Seminar:Assistant Professor Ipsita Mandal
DESCRIPTION:Detectable signatures of topology of the bandstructures in 3d semimetalsShiv Nadar Institution of Eminence (SNIoE)\, India \n\n\n\n \n\n\n\nWe will elucidate the nature of the linear-response tensors in planar-Hall and planar-thermal-Hall set-ups\, where we subject a 3d semimetal (harbouring nodal points of topological nature) to the combine influence of an electric field (and/or temperature gradient) and a weak (i.e. non-quantising) magnetic field. We will explain why it is essential to include the effects of the intrinsic orbital magnetic moment of the wavepackets in conjunction with the Berry curvature\, in order to obtain a holistic picture of the effects of topology of the Brillouin zone in the linear-response tensors. Going beyond the well-studied example of Weyl semimetals\, we will discuss the cases of their multifold cousins\, harbouring higher Chern numbers. We will highlight how we can compute the exact solutions from the Boltzmann equations\, which gets rid of the often-inaccurate results of the naive relaxation-time approximation. Finally\, we will outline how to derive surface states\, in the form of Fermi arcs\, characterising generic nodal points. \n\n\n\n \n\n\n\nVenue: PHY 5.0.21
URL:https://grk2905.de/event/grk-seminar-assistant-professor-ipsita-mandal/
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2025/11/Mandal-Ipsita.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260112T140000
DTEND;TZID=Europe/Berlin:20260112T150000
DTSTAMP:20260326T162221Z
CREATED:20251217T125315Z
LAST-MODIFIED:20260326T162221Z
UID:1877-1768226400-1768230000@grk2905.de
SUMMARY:RTG seminar:Dr. Kirill Voronin
DESCRIPTION:Theory of near-field microscopy andquantum optics of anisotropic materials \n\n\n\n \n\n\n\nDonostia International Physics Center\, (DIPC) San Sebastian\, Spain \n\n\n\n \n\n\n\nThe talk presents our recent theoretical advances in near-field microscopy and quantum optics of anisotropic media. First\, I discuss an analytic theory of near-field microscopy\, its extension to layered structures\, and open theoretical challenges elevant for experiments. I then address quantum electrodynamics of strongly anisotropic materials\, including quantization of hyperbolic phonon polaritons and emitter–polariton coupling\, highlighting open questions and potential directions for future studies. \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-seminar-dr-kirill-voronin/
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2025/12/Voronin.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260116T140000
DTEND;TZID=Europe/Berlin:20260116T150000
DTSTAMP:20260326T162207Z
CREATED:20250918T092416Z
LAST-MODIFIED:20260326T162207Z
UID:1781-1768572000-1768575600@grk2905.de
SUMMARY:RTG Colloquium: Prof. Dr. Rudolf Bratschitsch
DESCRIPTION:Title: Magnonic waveguide networks \n\n\n\nUltrafast solid-state quantum optics and nanophotonics\, Physical Institute\, University of Münster\, Münster\, Germany \n\n\n\nSpin waves (magnons) have emerged as a promising platform for next-generation physical computing. However\, current experimental realizations of magnonic waveguides suffer from limited spin-wave propagation lengths and inefficient dispersion tuning capabilities. In my talk\, I will present low-loss magnonic waveguides in a thin magnetic insulator film\, fabricated with a new maskless silicon ion implantation technique. We demonstrate a large-scale magnonic network\, paving the way for wafer-scale magnonic integrated circuits. \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-prof-dr-rudolf-bratschitsch/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2025/09/bratschitsch-e1758187435116.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260123T140000
DTEND;TZID=Europe/Berlin:20260123T150000
DTSTAMP:20260326T162155Z
CREATED:20250918T092750Z
LAST-MODIFIED:20260326T162155Z
UID:1784-1769176800-1769180400@grk2905.de
SUMMARY:RTG Colloquium:Dr. Anna Rosławska
DESCRIPTION:Single-molecule optics with atomic precision\n\n\n\nAtomic Scale Optics\, Max Planck Institute for Solid State Research\, Stuttgart\, Germany \n\n\n\nLuminescence\, photosynthesis\, and energy harvesting rely on processes originating at the spatial scale of individual molecules. Investigating the details of these mechanisms requires reaching subnm precision in optics\, which becomes possible by combining optical spectroscopy with scanningprobe microscopy. In my talk\, I will discuss how atomic-scale optics can be used to study the optical properties of single molecules and to drive photochemistry with sub-nm precision. \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-dr-anna-m-roslawska/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/webp:https://grk2905.de/wp-content/uploads/2025/09/anna_maria_roslawska-e1758187610182.webp
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260130T140000
DTEND;TZID=Europe/Berlin:20260130T150000
DTSTAMP:20260326T162142Z
CREATED:20250918T093152Z
LAST-MODIFIED:20260326T162142Z
UID:1788-1769781600-1769785200@grk2905.de
SUMMARY:RTG Colloquium:Prof. Dr. Renske van der Veen
DESCRIPTION:Fast electrons and hard X-rays for unraveling atomic-scale dynamics in light-energy conversion\n\n\n\nDepartment Atomic-Scale Dynamics in Light-Energy Conversion\, Helmholtz Zentrum Berlin \n\n\n\nThe increasing demand for renewable and low-cost energy motivates intensive research aimed at characterizing and optimizing materials that can efficiently convert (sun) light into usable energy in the form of electricity or chemical fuels. Conventional characterization techniques either lack the spatial resolution necessary to resolve individual atoms\, or they lack the temporal resolution required to capture structural rearrangements as they evolve. Our group develops complementary X-ray and electron-based tools to visualize light-induced processes in materials on atomic length and time scales. In this talk I will introduce you to the techniques of ultrafast/time-resolved X-ray spectroscopy and transmission electron microscopy and provide several examples of how these techniques can be used in the fields of solar energy and catalysis. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquiumprof-dr-renske-van-der-veen/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/png:https://grk2905.de/wp-content/uploads/2026/01/VanDerVeen.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260206T100000
DTEND;TZID=Europe/Berlin:20260206T110000
DTSTAMP:20260326T162130Z
CREATED:20260204T121005Z
LAST-MODIFIED:20260326T162130Z
UID:1961-1770372000-1770375600@grk2905.de
SUMMARY:RTG Seminar:Dr. Zijian Lyu
DESCRIPTION:Attosecond quantum spectroscopy with entangled photon pairs\n\n\n\nPeking University\, China \n\n\n\n \n\n\n\n \n\n\n\nEntangled photon pairs provide nonclassical correlations that can be up-converted in strong-field nonlinearities. I will show how these correlations map onto high-order harmonics in solids\, enabling correlation-resolved spectroscopy of carrier dynamics. By introducing a two-color driving field\, we further achieve ultrafast\, in-situ control of the quantum state of the emitted light. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN.0.35
URL:https://grk2905.de/event/grk-seminar-dr-zijian-lyu/
ATTACH;FMTTYPE=image/png:https://grk2905.de/wp-content/uploads/2026/02/Zijian_Lyu-e1770213911632.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260225T090000
DTEND;TZID=Europe/Berlin:20260225T160000
DTSTAMP:20260217T093851Z
CREATED:20260217T093851Z
LAST-MODIFIED:20260217T093851Z
UID:1985-1772010000-1772035200@grk2905.de
SUMMARY:Softskill workshop: Unconscious Bias
DESCRIPTION:Venue: RUN 0.35 \n\n\n\n“Our life is marked by prejudices and unconscious biases that influence our thoughts and actions. In this workshop\, we will embark on a journey to become aware of these unconscious biases and develop strategies for better handling them in our daily lives. We will create space for open discussions and respectful exchanges to collaboratively devise solutions and have a positive impact on our personal relationships and society as a whole. This workshop provides an opportunity to gain a deeper understanding of the topic of bias and to take concrete steps towards change.” [J. Handschuh] \n\n\n\nFind more information here.
URL:https://grk2905.de/event/softskill-workshop-unconscious-bias/
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260323T080000
DTEND;TZID=Europe/Berlin:20260325T170000
DTSTAMP:20250918T093540Z
CREATED:20250918T093454Z
LAST-MODIFIED:20250918T093540Z
UID:1791-1774252800-1774458000@grk2905.de
SUMMARY:RTG offsite workshop
DESCRIPTION:Hotel Wutzschleife\, Rötz
URL:https://grk2905.de/event/rtg-offsite-workshop/
CATEGORIES:Conference
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2025/09/HotelWutzelschleife.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260420T160000
DTEND;TZID=Europe/Berlin:20260420T170000
DTSTAMP:20260608T150125Z
CREATED:20260326T141043Z
LAST-MODIFIED:20260608T150125Z
UID:2013-1776700800-1776704400@grk2905.de
SUMMARY:RTG Colloquium jointly held with the Physics Colloquium: Oliver Graydon
DESCRIPTION:The role of AI in scientific publishing\n\n\n\nChief Editor Nature PhotonicsSpringer Nature\, UK \n\n\n\n \n\n\n\nArtificial intelligence (AI) is set to bring profound transformations in how science is conducted and communicated. This talk with discuss the trends\, opportunities\, risks and challenges associated with AI from the viewpoint of scientific publishing with a focus on clarifying the present policies and principles at Nature journals and Springer-Nature. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: H34
URL:https://grk2905.de/event/rtg-colloquium-jointly-held-with-the-physics-colloquium-oliver-graydon/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/03/oliver-photon-2-hi-res-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260424T140000
DTEND;TZID=Europe/Berlin:20260424T150000
DTSTAMP:20260608T150113Z
CREATED:20260313T095201Z
LAST-MODIFIED:20260608T150113Z
UID:1999-1777039200-1777042800@grk2905.de
SUMMARY:RTG Colloquium: Zhiyang Zeng
DESCRIPTION:Dynamical control of structural order\n\n\n\nCondensed Matter Dynamics DepartmentMPI for the Structure and Dynamics of Matter\, Hamburg \n\n\n\nCoherent excitation of lattice vibrations has emerged as a powerful approach to dynamicallycontrol functional material properties. In this talk\, I will present our recent work on using nonlinearphononics—a mechanism that enables the selective displacement of specific lattice vibrations—tomanipulate structural functionalities with light [1\,2]. In particular\, I will discuss how this approachenables the ultrafast control of chirality [3] and ferroaxial order [4]\, offering new pathways to tailorsymmetry and drive phase transitions in solids on demand. \n\n\n\n \n\n\n\n[1] Först\, et al. Nature Physics 7 (2011): 854-856.[2] Disa\, et al. Nature Physics 17 (2021): 611-618.[3] Zeng\, et al. Science 387.6732 (2025): 431-436.[4] Zeng\, et al. Science 390.6769 (2025): 195-198. \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-zhiyang-zeng/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/03/zeng-scaled.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260521T130000
DTEND;TZID=Europe/Berlin:20260521T140000
DTSTAMP:20260513T074122Z
CREATED:20260513T074122Z
LAST-MODIFIED:20260513T074122Z
UID:2146-1779368400-1779372000@grk2905.de
SUMMARY:RTG Seminar: Yiqi Fang
DESCRIPTION:Shaping electron dynamics with structured light\n\n\n\nFAU Erlangen\, Institute of Laser Physics \n\n\n\n \n\n\n\nLaser-excited electron motions allow the investigation of fundamental physical phenomena with unprecedented resolution in time\, space and energy. Structured light offers new opportunities to tailor and control the optical response of materials\, far beyond the ability of conventional linearly or circularly polarized light. In this talk\, I will show the physics and application of structured light when it interacts with bound electrons in atoms as well as when it interacts with electron pulses in free space. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN.0.35
URL:https://grk2905.de/event/rtg-seminar-yiqi-fang/
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/05/Fang.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260522T140000
DTEND;TZID=Europe/Berlin:20260522T153000
DTSTAMP:20260608T150053Z
CREATED:20260430T162325Z
LAST-MODIFIED:20260608T150053Z
UID:2116-1779458400-1779463800@grk2905.de
SUMMARY:RTG Colloquium: Thomas Taubner
DESCRIPTION:Infrared near-field spectroscopy of few-layer graphene\n\n\n\nRWTH Aachen\, Germany \n\n\n\n \n\n\n\nInfrared scattering-type scanning-near-field optical microscopy (s-SNOM) enables the imaging of nanostructures with sub-diffraction resolution by elastic light scattering at a sharp tip. s-SNOM also boosted the field of 2D materials by enabling real-space imaging of plasmon- or phonon polaritons\, e.g.\, in graphene and hexagonal Boron Nitride (hBN)\, respectively. Polariton imaging with s-SNOM has allowed for indirectly mapping (grain) boundaries and (stacking) defects in fewlayer Graphene (FLG) via polariton reflection.Here\, I will present how spectroscopic IR s-SNOM is able to determine the local stacking order at nanoscale resolution not only of bare few-layer graphene\, but also when it is encapsulated below hBN layers. I will explain the contrast mechanisms\, mainly based on the characteristic and stacking-dependent interband transitions of FLG\, for bilayer graphene\, trilayer (TLG) graphene and tetralayer graphene (4LG). We retrieve and reconstruct these characteristic complex optical conductivity resonances from the amplitude and phase of the scattered light\, which e.g. allow for the unambiguous assignment of previously undetected ABCB domains in 4LG.Coupling the (stacking-dependent) FLG with phonon polaritons in a hBN TLG heterostructure also leads to coupled polaritons (hyperbolic phonon plasmon polaritons). We explore how they allow for super-resolution imaging of subdiffraction-sized defects in graphene through the hBN cover layer via the so-called hyperlensing effect. Furthermore\, we show how resonators for polaritons in 2D materials like hBN can be easily fabricated and optically reconfigured using Phase-Change Materials. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/rtg-colloquium-thomas-taubner/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/04/Taubner.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260611T140000
DTEND;TZID=Europe/Berlin:20260611T160000
DTSTAMP:20260603T083600Z
CREATED:20260519T125624Z
LAST-MODIFIED:20260603T083600Z
UID:2161-1781186400-1781193600@grk2905.de
SUMMARY:RTG Colloquium: Gabriele Kaminski Schierle & Clemens Kaminski
DESCRIPTION:Biological imaging at the nanoscale\n\n\n\nClemens F. Kaminski\, University of CambridgeThe advent of optical super‑resolution imaging together with the ability to label specific cellular components with fluorescent markers has ushered in a revolution in our mechanistic understanding of biological processes. In this presentation\, I will provide an overview of current methods used to obtain nanoscale insights into the molecular machinery that supports life at the subcellular level. I will present approaches for tracking protein interactions\, using single‑molecule localisation microscopy as well as indirect techniques such as fluorescence lifetime imaging microscopy. I will then discuss methods based on structured illumination microscopy\, which enable dynamic interrogation of cellular machinery including lysosomes and the endoplasmic reticulum. Finally\, I will offer an outlook on emerging trends and how machine learning is transforming our field. \n\n\n\n \n\n\n\nCoffee break & discussion \n\n\n\n \n\n\n\nBeyond Alzheimer’s: conserved lysosomal dyshomeostasis as a driver of synaptic dysfunction across neurodegenerative proteopathies\n\n\n\n \n\n\n\nGabriele S. Kaminski Schierle\, University of Cambridge \n\n\n\nWhile scientists know that in Alzheimer’s disease\, lysosomes (the cell’s “trash cans”) clump together and lose their acidity\, they didn’t know if this happens in all neurodegenerative diseases.This study found that this “trash can” breakdown actually happens across many diseases\, including ALS\, Parkinson’s\, and Frontotemporal Dementia. Instead of being spread out normally to clean the whole cell\, the lysosomes clump tightly around the cell’s centre.By tracking cell electricity and layout\, the researchers discovered that this clumping severely damages brain signalling. Because the lysosomes are stuck in the centre\, they can’t reach the distant outer branches of the brain cells to clear out old\, broken proteins. This causes waste to build up and shorts out communication between neurons.Ultimately\, this suggests that fixing where lysosomes sit and restoring their acidity could act as a single\, powerful treatment for multiple brain diseases. \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/rtg-colloquium-gabriele-kaminski-schierle-clemens-kaminski/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/png:https://grk2905.de/wp-content/uploads/2026/05/Kaminskis.png
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260618T140000
DTEND;TZID=Europe/Berlin:20260618T150000
DTSTAMP:20261013T113830Z
CREATED:20260617T115938Z
LAST-MODIFIED:20261013T113830Z
UID:2207-1781791200-1781794800@grk2905.de
SUMMARY:RTG Seminar:Prasana Kumar Sahoo
DESCRIPTION:Engineering excitons in 2D lateral heterostructures for reconfigurable devices\n\n\n\nQuantum Materials & Device Research Lab (QMDrL)\, Materials Science Centre\,Indian Institute of Technology Kharagpur\, India \n\n\n\n \n\n\n\nTwo-dimensional semiconductor lateral hetero-structures (LHS) provide atomically sharp 1D interfaces for controlling charge carriers\, excitons\, and light. I will present scalable growth of seamless TMD LHS\, exhibiting tunable PN junctions\, electroluminescence\, excitonic transistor operation\, and reversible photoconductivity. These materials offer a versatile platform for quantum photonics\, exciton-based devices\, and low-dimensional quantum systems. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN 0.34
URL:https://grk2905.de/event/rtg-seminar-prasana-kumar-sahoo/
CATEGORIES:Seminar
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/06/Sahoo.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260619T140000
DTEND;TZID=Europe/Berlin:20260619T150000
DTSTAMP:20261013T113809Z
CREATED:20260326T153746Z
LAST-MODIFIED:20261013T113809Z
UID:2023-1781877600-1781881200@grk2905.de
SUMMARY:RTG Colloquium:Alice Kunin
DESCRIPTION:High-performance time-resolved photoemission experiments of quantum materials\n\n\n\nPrinceton University \n\n\n\n \n\n\n\nI will discuss our work coupling MHz\, kW light sources with momentum microscopy to enable efficient time- and angle-resolved photoemission (tr-ARPES) studies. I will first examine the dynamics of intra- and interlayer excitons in twisted van der Waals heterobilayers. I will then discuss our current work on a new spectrometer to probe ultrafast surface photochemistry in situ with the extension of tr-ARPES beyond ultrahigh vacuum towards more realistic chemical environments. \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-alice-kunin/
CATEGORIES:Colloquium
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260703T140000
DTEND;TZID=Europe/Berlin:20260703T150000
DTSTAMP:20261013T113748Z
CREATED:20260326T153757Z
LAST-MODIFIED:20261013T113748Z
UID:2025-1783087200-1783090800@grk2905.de
SUMMARY:RTG Colloquium:Bruno Schuler
DESCRIPTION:Probing atomic defects in 2D semiconductors with light-coupled STM\n\n\n\nEmpa\, Switzerland \n\n\n\n \n\n\n\nTwo-dimensional (2D) semiconductors provide an exciting platform to engineer atomic quantum systems in a robust\, yet tunable solid-state system. This talk explores the intriguing physics of single point defects in transition metal dichalcogenide (TMD) monolayers\, investigated through atomically resolved scanning probe microscopy. \n\n\n\nWe demonstrate electrically induced exciton emission from both pristine MoS₂ and individual charged defects using scanning tunnelling microscope luminescence (STML) on ultrathin hBN decoupling layers [1]. Furthermore\, I will present our recent advances in time-resolved THz-STM using QEV maps to achieve state-selective ultrafast charge injection [2]. This approach enables the investigation of charge [3] and exciton dynamics [4] with atomic spatial\, millielectronvolt energy\, and picosecond temporal resolution. \n\n\n\nBy combining the structural and electronic properties accessible by conventional scanning probe microscopy with the optical fingerprint from STML and the excited-state dynamics revealed through pump-probe THz-STM\, we gain a comprehensive microscopic understanding of localized quantum states in low-dimensional materials. \n\n\n\n \n\n\n\n[1] L. Huberich et al. arxiv: 2510.15676 (2025)[2] L. Bobzien et al. APL Mater. 12\, 051110 (2024)[3] J. Allerbeck et al. Nat. Commun. 16\, 10806 (2025)[4] L. Bobzien et al. (in preparation) \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/grk-colloquium-bruno-schuler/
CATEGORIES:Colloquium
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260716T090000
DTEND;TZID=Europe/Berlin:20260716T170000
DTSTAMP:20260708T083925Z
CREATED:20260608T151832Z
LAST-MODIFIED:20260708T083925Z
UID:2193-1784192400-1784221200@grk2905.de
SUMMARY:Workshop: Presentation skills for scientists
DESCRIPTION:One-day in person workshop with Guido Molina (professional actor & internationally active director) for RTG 2905 students. \n\n\n\n\n\n\n\n\n\n\n\nTheater training for effective communication\n\n\n\nGuido Molina\, impuls plus \n\n\n\n \n\n\n\nWith a career as an actor in theater\, film\, and television\, as well as experience teaching and directing in international settings\, Guido Molina draws on his wealth of knowledge and experience to offer excellent training in communication and presentation skills.  \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/workshop-drama-and-the-scientist/
CATEGORIES:Workshop
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/06/Guido_roter_HG-e1701945235549-768x768-1.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260928T100000
DTEND;TZID=Europe/Berlin:20260930T100000
DTSTAMP:20260904T083557Z
CREATED:20260904T083556Z
LAST-MODIFIED:20260904T083557Z
UID:2270-1790589600-1790762400@grk2905.de
SUMMARY:Special lecture series: Ultrafast linear and nonlinear X-ray spectroscopy
DESCRIPTION:September 28 – September 30 \n\n\n\n10:00 – 11:00 \n\n\n\n\n\n\n\n\n\nMichael W. Zuerch\n\n\n\nUniversity of California\, Berkeley \n\n\n\n \n\n\n\nPart I: Introduction and fundamentals \n\n\n\nIn this first lecture\, I will explore the advantages of elemental and symmetry-selective probes for studying chemically relevant interfaces and symmetry properties in materials\, contrasting these approaches with conventional methods commonly used in experimental condensed matter physics. Additionally\, I will provide an overview of the fundamentals of X-ray spectroscopy and free-electron lasers that enabled the recent demonstrations of nonlinear spectroscopy in the X-ray regime. \n\n\n\n \n\n\n\nPart II: Linking nonlinear optics between visible and X-ray regime \n\n\n\nIn this lecture\, we will focus on the fundamentals of nonlinear optics and explore how to bridge our understanding across photon energy scales\, from the visible to the X-ray regime. We will specifically examine the foundational differences between the visible/infrared regimes\, which provide surface sensitivity\, the XUV/soft X-ray regime\, which enables elemental specificity at interfaces\, and the hard X-ray regime\, which is sensitive to bulk symmetry. \n\n\n\n \n\n\n\nPart III: Applications in materials and liquid interfaces \n\n\n\nIn this lecture\, I will present recent examples demonstrating how the combination of linear and nonlinear X-ray spectroscopy can reveal properties of matter and interfaces that are otherwise inaccessible. These examples include complex quantum phases of matter and the surface of water. \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/special-lecture-series-ultrafast-linear-and-nonlinear-x-ray-spectroscopy/
CATEGORIES:Special lecture series
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/09/3-scaled.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20261022T083000
DTEND;TZID=Europe/Berlin:20261022T170000
DTSTAMP:20260925T084621Z
CREATED:20260925T084620Z
LAST-MODIFIED:20260925T084621Z
UID:2306-1792657800-1792688400@grk2905.de
SUMMARY:Career.Visibility.Impact.
DESCRIPTION:Workshop for women in Science\n\n\n\n \n\n\n\nJoint Workshop Series with SFB 1277 \n\n\n\n(deutschsprachiges Angebot) \n\n\n\n \n\n\n\nOkt. 22: Sichtbar mit Substanz \n\n\n\nOkt. 23: LinkedIn als Karriere- und Sichtbarkeitsplattform (Teil 1) \n\n\n\nDez. 03: Klar.Souverän.Durchsetzungsstark. \n\n\n\nDez. 04: LinkedIn als Karriere- und Sichtbarkeitsplattform (Teil 2) \n\n\n\nDez. 14: Gemeinsam stärker \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nFor more information and registration\, please visit www.sfb1277-regensburg.de
URL:https://grk2905.de/event/career-visibility-impact/
CATEGORIES:Workshop
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20261023T140000
DTEND;TZID=Europe/Berlin:20261023T150000
DTSTAMP:20261013T113643Z
CREATED:20260907T120930Z
LAST-MODIFIED:20261013T113643Z
UID:2287-1792764000-1792767600@grk2905.de
SUMMARY:RTG Colloquium:Martin Weik
DESCRIPTION:Integrated time-resolved structural biology approaches to visualize photoreceptor proteins at work\n\n\n\nInstitut de Biologie Structurale\, Grenoble \n\n\n\n \n\n\n\nPhotoreceptor proteins utilise the absorption of light to elicit a biological response in a variety of processes\, including vision\, circadian rhythms and plant development. In order to visualise the structural dynamics of photoreceptor proteins in action\, a particularly powerful approach is to integrate results from various time-resolved structural biology approaches: time-resolved serial femtosecond crystallography\, time-resolved X-ray solution scattering and time-resolved single particle cryo-EM. The merits of a synergistic implementation of these approaches will be exemplified by a recent study that investigates a vitamin B12-dependent photo-receptor. \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/rtg-colloquium-martin-weik/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/09/Weik.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20261120T140000
DTEND;TZID=Europe/Berlin:20261120T150000
DTSTAMP:20261013T113712Z
CREATED:20260907T121848Z
LAST-MODIFIED:20261013T113712Z
UID:2292-1795183200-1795186800@grk2905.de
SUMMARY:RTG Colloquium:Oleg Mitrofanov
DESCRIPTION:University College London\, UK \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/rtg-colloquium-oleg-mitrofanov/
CATEGORIES:Colloquium
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/09/Mitrofanov.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20261211T140000
DTEND;TZID=Europe/Berlin:20261211T150000
DTSTAMP:20261013T113726Z
CREATED:20260907T122332Z
LAST-MODIFIED:20261013T113726Z
UID:2298-1796997600-1797001200@grk2905.de
SUMMARY:RTG Colloquium:Gloria Platero
DESCRIPTION:ICMM-CISC\, Madrid \n\n\n\n \n\n\n\n \n\n\n\n \n\n\n\nVenue: RUN Auditorium
URL:https://grk2905.de/event/rtg-colloquium-gloria-platero/
CATEGORIES:Colloquium
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END:VCALENDAR