Results 31 to 40 of about 391,901 (292)

A mid-infrared lab-on-a-chip for dynamic reaction monitoring

open access: yesNature Communications, 2022
Rapid investigation of chemical reactions is a challenge in bio-medical analysis. Here, the authors demonstrate sensitive in-situ real-time reaction-monitoring of conformational changes in protein solution, based on a fingertip-sized mid-IR lab-on-a-chip.
Borislav Hinkov   +11 more
doaj   +1 more source

Coherent manipulation of a solid-state artificial atom with few photons

open access: yesNature Communications, 2016
Quantum information processing requires a system in which a single photon controls a single atom and vice versa. Here, the authors demonstrate such reciprocal operation and achieve coherent manipulation of a quantum dot by a few photons sent on an ...
V. Giesz   +14 more
doaj   +1 more source

A Temperature-Controlled Patch Clamp Platform Demonstrated on Jurkat T Lymphocytes and Human Induced Pluripotent Stem Cell-Derived Neurons

open access: yesBioengineering, 2020
Though patch clamping at room temperature is a widely disseminated standard procedure in the electrophysiological community, it does not represent the biological system in mammals at around 37 °C.
Jann Harberts   +4 more
doaj   +1 more source

Luminescence from Droplet-Etched GaAs Quantum Dots at and Close to Room Temperature

open access: yesNanomaterials, 2021
Epitaxially grown quantum dots (QDs) are established as quantum emitters for quantum information technology, but their operation under ambient conditions remains a challenge.
Leonardo Ranasinghe   +5 more
doaj   +1 more source

Coulomb interactions in high-coherence femtosecond electron pulses from tip emitters

open access: yesStructural Dynamics, 2019
Tip-based photoemission electron sources offer unique properties for ultrafast imaging, diffraction, and spectroscopy experiments with highly coherent few-electron pulses.
Nora Bach   +6 more
doaj   +1 more source

Evidence of diffusive fractal aggregation of TiO2 nanoparticles by femtosecond laser ablation at ambient conditions

open access: yes, 2016
The specific mechanisms which leads to the formation of fractal nanostructures by pulsed laser deposition remain elusive despite intense research efforts, motivated mainly by the technological interest in obtaining tailored nanostructures with simple and
Archetti, D.   +5 more
core   +1 more source

Spectral and temporal characterization of the optical Kerr effect in Au/SiN multilayer hyperbolic metamaterials [PDF]

open access: yesEPJ Web of Conferences
Metamaterials are artificially structured media offering multiple applications. Among them, epsilon-near-zero (ENZ) metamaterials are a platform for enhanced nonlinear optical phenomena.
Sindoni Alice   +4 more
doaj   +1 more source

Multimodal imaging of cubic Cu2O@Au nanocage formation via galvanic replacement using X-ray ptychography and nano diffraction

open access: yesScientific Reports, 2023
Being able to observe the formation of multi-material nanostructures in situ, simultaneously from a morphological and crystallographic perspective, is a challenging task.
Lukas Grote   +10 more
doaj   +1 more source

Interaction-induced hopping phase in driven-dissipative coupled photonic microcavities

open access: yesNature Communications, 2016
Coupled semiconductor microcavities constitute a model system where the hopping, interaction, and decay of exciton polaritons can be engineered. Here, Rodriguez et al.
S. R. K. Rodriguez   +6 more
doaj   +1 more source

Monitoring Galvanic Replacement Through Three-Dimensional Morphological and Chemical Mapping

open access: yes, 2014
Galvanic replacement reactions on metal nanoparticles are often used for the preparation of hollow nanostructures with tunable porosity and chemical composition, leading to tailored optical and catalytic properties. However, the precise interplay between
Bals, Sara   +4 more
core   +1 more source

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