Results 71 to 80 of about 137,373 (293)

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

open access: yesAdvanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova   +21 more
wiley   +1 more source

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk   +10 more
wiley   +1 more source

MODELING OF MULTILAYER ULTRATHIN-FILM PHOTONIC CRYSTALS FOR SELECTIVE FILTERS

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The aim of the work was to study the optical properties of the one-dimensional photonic crystals from ultrathin alternating layers of titanium and silicon oxides with different order of alternating layers to form defective half-wave layers in the bulk of
L. S. Khoroshko   +2 more
doaj   +1 more source

The Influence Of Hole Radius On The Properties Of Photonic Crystal Fiber [PDF]

open access: yesمجلة التربية والعلم, 2008
The influence of air hole radius on the numerical aperture, total dispersion, effective area, and nonlinear coefficient for the photonic crystal fibers are investigated.
Huda Masood Mohamad   +1 more
doaj   +1 more source

Graphene-based one-dimensional photonic crystal

open access: yes, 2011
A novel type of one-dimensional (1D) photonic crystal formed by the array of periodically located stacks of alternating graphene and dielectric stripes embedded into a background dielectric medium is proposed.
Berman O L   +11 more
core   +1 more source

Overview of the EU FP7-project HISTORIC [PDF]

open access: yes, 2010
HISTORIC aims to develop and test complex photonic integrated circuits containing a relatively large number of digital photonic elements for use in e.g. all-optical packet switching.
Chrysos, Nikolaos   +10 more
core   +2 more sources

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Self-trapping of light and nonlinear localized modes in 2D photonic crystals and waveguides [PDF]

open access: yes, 2001
We overview our recent results on the nonlinear localized modes in two-dimensional (2D) photonic crystals and photonic-crystal waveguides. Employing the technique based on the Green function, we describe the existence domains for nonlinear guided modes ...
Kivshar, Yuri S., Mingaleev, Serge F.
core   +3 more sources

Electrically pumped edge-emitting photonic crystal lasers with angled facets [PDF]

open access: yes, 2007
We demonstrate electrically pumped large-area edge-emitting InGaAsP/InP two-dimensional photonic crystal lasers with angled facets at room temperature. The laser uses a weak index perturbation surface photonic crystal structure to control optical modes ...
DeRose, Guy A.   +3 more
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

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