Results 1 to 10 of about 229,074 (292)
Frontiers in Microbiology, 2021 We developed an ultrafast one-step RT-qPCR assay for SARS-CoV-2 detection, which can be completed in only 30 min on benchtop Bio-Rad CFX96. The assay significantly reduces the running time of conventional RT-qPCR: reduced RT step from 10 to 1 min, and ...
Jadranka Milosevic +7 more
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Evolving Stark Effect During Growth of Perovskite Nanocrystals Measured Using Transient Absorption
Frontiers in Chemistry, 2020 Methylammonium lead triiodide (MAPbI3) nanocrystals (NCs) are emerging materials for a range of optoelectronic applications. Photophysical characterization is typically limited to structurally stable NCs owing to the long timescales required for many ...
James C. Sadighian +5 more
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Ultrafast electron cooling in an expanding ultracold plasma
Nature Communications, 2021 Here the authors report on the creation of ultracold plasma by photoionization of a Bose-Einstein condensate with a femtosecond laser pulse. The experimental setup grants direct access to the electron temperature and reveals ultrafast cooling of ...
Tobias Kroker +5 more
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Electron Dynamics in Anatase TiO2 Nanoparticles by Ultrafast Broadband Deep-Ultraviolet Spectroscopy [PDF]
EPJ Web of Conferences, 2019 The optical bandgap of anatase TiO2 nanoparticles is dominated by bulk absorption bands in the deep-ultraviolet due to strongly bound excitons. These spectral features can be utilized as a sensitive probe of carrier and lattice dynamics inside the TiO2 ...
Baldini Edoardo +4 more
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Nonlinear anisotropic dielectric metasurfaces for ultrafast nanophotonics [PDF]
, 2017 We report on the broadband transient optical response from anisotropic nanobrick amorphous silicon particles, exhibiting Mie-type resonances. A quantitative model is developed to identify and disentangle the three physical processes that govern the ...
Cerullo, Giulio +9 more
core +4 more sources
Nanophotonics, 2020 Coherent control is an ingenious tactic to steer a system to a desired optimal state by tailoring the phase of an incident ultrashort laser pulse. A relevant process is the two-photon–induced photoluminescence (TPPL) of nanoantennas, as it constitutes a ...
Accanto Nicolò +4 more
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Ultrafast electron diffraction using an ultracold source [PDF]
, 2014 We present diffraction patterns from micron-sized areas of mono-crystalline graphite obtained with an ultracold and ultrafast electron source. We show that high spatial coherence is manifest in the visibility of the patterns even for picosecond bunches ...
Engelen, W. J. +3 more
core +7 more sources
All-Optical Modulation and Ultrafast Switching in MWIR with Sub-Wavelength Structured Silicon
Applied Sciences, 2019 We investigated and optimised the performance of the all-optical reflective modulation of the Mid-Wave Infrared (MWIR) signal by means of the optically-pumped sub-wavelength-structured optical membranes made of silicon.
Rihan Wu +3 more
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Optical current generation in graphene: CEP control vs. ω + 2ω control
Nanophotonics, 2021 The injection of directional currents in solids with strong optical fields has attracted tremendous attention as a route to realize ultrafast electronics based on the quantum-mechanical nature of electrons at femto- to attosecond timescales.
Heide Christian +3 more
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Energies, 2021 Ultrafast pump-probe spectroscopies have proved to be an important tool for the investigation of charge carriers dynamics in perovskite materials providing crucial information on the dynamics of the excited carriers, and fundamental in the development of
Daniele Catone +10 more
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