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X-WR-CALDESC:Events for GRK 2905 - Ultrafast Nanoscopy
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260521T130000
DTEND;TZID=Europe/Berlin:20260521T140000
DTSTAMP:20260525T105614
CREATED:20260513T074122Z
LAST-MODIFIED:20260513T074122Z
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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
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260522T140000
DTEND;TZID=Europe/Berlin:20260522T153000
DTSTAMP:20260525T105614
CREATED:20260430T162325Z
LAST-MODIFIED:20260519T145401Z
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/
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/04/Taubner.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260611T140000
DTEND;TZID=Europe/Berlin:20260611T170000
DTSTAMP:20260525T105614
CREATED:20260519T125624Z
LAST-MODIFIED:20260519T125624Z
UID:2161-1781186400-1781197200@grk2905.de
SUMMARY:RTG Colloquium: Gabriele Kaminski Schierle & Clemens Kaminski
DESCRIPTION:University of Cambridge \n\n\n\n \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-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:20260619T140000
DTEND;TZID=Europe/Berlin:20260619T150000
DTSTAMP:20260525T105614
CREATED:20260326T153746Z
LAST-MODIFIED:20260326T162045Z
UID:2023-1781877600-1781881200@grk2905.de
SUMMARY:RTG Colloquium: Alice Kunin
DESCRIPTION:Princeton University \n\n\n\n \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/grk-colloquium-alice-kunin/
ATTACH;FMTTYPE=image/png:https://grk2905.de/wp-content/uploads/2026/03/people_alice-768x768-1.png
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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260703T140000
DTEND;TZID=Europe/Berlin:20260703T150000
DTSTAMP:20260525T105614
CREATED:20260326T153757Z
LAST-MODIFIED:20260326T162033Z
UID:2025-1783087200-1783090800@grk2905.de
SUMMARY:RTG Colloquium: Bruno Schuler
DESCRIPTION:Empa\, Switzerland \n\n\n\n \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/grk-colloquium-bruno-schuler/
ATTACH;FMTTYPE=image/jpeg:https://grk2905.de/wp-content/uploads/2026/03/citations.jpg
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