Results 131 to 140 of about 88,801 (245)

Plasmonic and Photonic Modes in Colloidal CuS Nanocrystals

Advanced Optical Materials, EarlyView.
Copper sulfide in the covellite phase (CuS) can exhibit exceptional optoelectronic properties with plasmonic and photonic absorption in its monolithic nanomaterial form. In this work, the phenomenon of near‐infrared (NIR) to visible electromagnetic field localization in ultrathin crystalline quasi‐2D CuS nanocrystals is demonstrated by mapping ...
Kenan Elibol, Fatemeh Davoodi, Urvi Parekh, Masoud Taleb, Stefan Scheel, Marko Burghard, Peter A. van Aken, Christian Klinke, Nahid Talebi, Rostyslav Lesyuk   +9 more
wiley   +1 more source

Polarization‐Dependent Color Modulation in Electrodeposited Cellulose Nanocrystals and Birefringent Multilayers

Advanced Optical Materials, EarlyView.
This work demonstrates that wavelength selective reflection of circularly polarized light (CPL) of both handedness (right‐R or left‐L) can be achieved from self‐assembled cellulose nanocrystals (CNCs), breaking the inherent limitation of obtaining only L‐CPL reflection.
Alexandre Fonseca, Paul Grey, Bruno Mendes, Wadood Y. Hamad, Elvira Fortunato, Rodrigo Martins, Luís Pereira, Diana Gaspar   +7 more
wiley   +1 more source

Triarylphosphonium BODIPY‐Based [2]Rotaxanes Nanoparticles for Light‐Driven Antibacterial Applications

Advanced Optical Materials, EarlyView.
New photosensitizers for light‐induced antimicrobial therapy are successfully synthesized and characterized. When dissolved in water, all compounds self‐assemble forming spherical aggregates with <100 nm dimensions. The nanoparticles show high photothermal conversion efficiency and demonstrate antimicrobial activity toward both Gram‐negative and Gram ...
Greta Sambucari, Corinne Coutant, Alessandro Di Michele, Gina Elena Giacomazzo, Pierrick Nun, Vincent Sol, Noe Renard, Tan‐Sothea Ouk, Vincent Coeffard, Mariangela Di Donato   +9 more
wiley   +1 more source

Cosmology with photometric redshift

, 2020
Universitat Autònoma de Barcelona.
openaire   +2 more sources

Controlling the Orientation of Polar Axis in Chiral Metal‐Halides to Reveal Their Intrinsic Circularly Polarized Luminescence

Advanced Optical Materials, EarlyView.
In chiral and polar metal‐halide single crystals or thin films, the orientation of the main optical axis normal to incident light allows an easy characterization of the chiroptical properties (circular dichroism and circularly polarized luminescence) without artifacts or macroscopic interferences, despite the highly anisotropic nature in this family of
Kostiantyn Tieriekhov, Maria Maniadi, Olivier Ségut, Sylvie Dabos‐Seignon, Arnaud Brosseau, Valérie Dupray, Nicolas Mercier, Alexandre Abhervé   +7 more
wiley   +1 more source

Enabling low Threshold Laser Through an Asymmetric Tetramer Metasurface Harnessing Polarization‐Independent Quasi‐BICs

Advanced Optical Materials, EarlyView.
Light impinging from the left on a metasurface composed by active material. The metasurface shows asymmetric configuration through the non‐uniform presence of holes. The forming quasi‐BICs modes are exploited for lasing purposes. Abstract It is proposed and numerically demonstrated a novel strategy to achieve lasing generation from a dual‐band symmetry‐
Tao Wang, Weizheng Di, W. E. I. Sha, Remo Proietti Zaccaria   +3 more
wiley   +1 more source

High Fidelity Waveguides Through Vitreous Media Recomposition for Next Generation Photonic Devices

Advanced Optical Materials, EarlyView.
A newly designed aluminosilicate glass enables the fabrication of femtosecond laser‐written optical waveguides with ultra‐low propagation losses of −0.020 dB cm−1 at 1310 nm and −0.037 dB cm−1 at 1550 nm. Raman, Brillouin, and electron microscopy analyses reveal the mechanisms behind refractive index modifications, highlighting the role of glass ...
T Toney Fernandez, Andrew Ross‐Adams, Mark Bakovic, Jens Ulrich Thomas, Oliver Hochrein, Hadi Mahmodi, Irina Kabakova, Karen Privat, Michael Withford, Simon Gross   +9 more
wiley   +1 more source

Few Photons Probe Third‐Order Nonlinear Properties of Nanomaterials in a Plasmonic Nanocavity

Advanced Optical Materials, EarlyView.
It is demonstrated that a few photons probe the nonlinear optical properties of different nanomaterials inside a plasmonic nanocavity. A simple analytical model fits the experimental result, which shows a strong dependence on the nanocavity resonance.
Anupa Kumari, MohammadReza Aghdaee, Mathis Van de Voorde, Oluwafemi Stephen Ojambati   +3 more
wiley   +1 more source

Fast radio bursts and the radio perspective on multi-messenger gravitational lensing. [PDF]

Philos Trans A Math Phys Eng Sci
Pastor-Marazuela I.
europepmc   +1 more source

Slow Hot Carrier Cooling and Quasi‐Fermi Shift Dynamics in Few‐Layer α‐In2Se3 via Transient Absorption Spectroscopy

Advanced Optical Materials, EarlyView.
Ultrafast transient absorption spectroscopy reveals that α‐In2Se3, a non‐toxic and air‐stable 2D material, demonstrates slow hot carrier (HC) cooling (≈35 ps), comparable to perovskites. This prolonged cooling can enable efficient energy extraction. Comprehensive analysis captures key HC dynamics, such as quasi‐Fermi shifts, many‐body interactions, and
Sung Bok Seo, Sanghee Nah, Muhammad Sajjad, Sang Ho Suk, Sangwan Sim   +4 more
wiley   +1 more source