Results 231 to 240 of about 1,344,372 (340)

Ultrafast Anisotropic Optical‐Gap Shift in Low‐Symmetry Layered GeS

open access: yesAdvanced Optical Materials, EarlyView.
This study reveals ultrafast, anisotropic optical‐gap shift dynamics in GeS. Optical excitation induces a significant redshift in the polarization along the zigzag direction, about three times greater than that along the perpendicular armchair direction.
Sung Bok Seo   +5 more
wiley   +1 more source

Suppressed Stokes Shifts and Hot Luminescence from Quantum Dots within Plasmonic Nanocavities

open access: yesAdvanced Optical Materials, EarlyView.
This study demonstrates the suppression of the Stokes shift in lead sulfide quantum dots through integration with plasmonic nanocavities. By enhancing spontaneous emission and altering exciton relaxation pathways, this approach enables direct band‐edge emission with improved radiative efficiency, highlighting the powerful role of nanophotonic ...
Junyang Huang   +12 more
wiley   +1 more source

From Photo‐Damage to Self‐Healing in Thin Film Pb‐Iodide Perovskites: Action at a Distance

open access: yesAdvanced Optical Materials, EarlyView.
Fluorescence imaging uncovers pronounced spatial and temporal changes in photoluminescence of halide perovskite films following laser‐induced damage. Modifications spatially extend well beyond the illuminated region and evolve over distinct time scales ranging from seconds to many hours, revealing material‐specific self‐healing pathways. These findings
Yahel Soffer   +4 more
wiley   +1 more source

Co‐Solvent‐Aided Opto‐Thermophoretic Printing of Gold Nanorod Assemblies

open access: yesAdvanced Optical Materials, EarlyView.
A focused laser beam creates a thermal gradient, driving the gold nanorods and polymer coils toward the heated region of the glass substrate, i.e, the laser spot. After the adsorption of the polymer on the gold surface, the nanorods start to assemble onto the surface in a ring‐shaped pattern that grows radially until the beam is turned off.
Ana Jiménez Amaya   +4 more
wiley   +1 more source

On the dimension of the attractor for a perturbed 3d Ladyzhenskaya model

open access: yesOpen Mathematics, 2013
Pražák Dalibor, Žabenský Josef
doaj   +1 more source

Thermally Activated Delayed Fluorescence and Beyond. Photophysics and Material Design Strategies.

open access: yesAdvanced Photonics Research, EarlyView.
Photophysical properties of TADF molecules are determined by characteristic parameters that are discussed in detail(. Moreover, using femtosecond time‐resolved spectroscopy, quantum mechanical considerations, and state‐of‐art calculations, deeper understanding allows us to design breakthrough Cu(I) and organic TADF‐ OLED materials. For the latter ones,
Hartmut Yersin, Uwe Monkowius
wiley   +1 more source

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