Results 251 to 260 of about 113,407 (294)

Complex Structured Light Generation Using Printed Liquid Crystal Droplets

Advanced Optical Materials, EarlyView.
Inkjet‐printed liquid crystal droplets generate structured light beams with spatially varying polarization and phase. These include full Poincaré beam, vortex beam carrying orbital angular momentum, and beam with polarization singularities, offering a simple approach for compact structured light generation in optical manipulation, imaging, and ...
Xuke Qiu, Runchen Zhang, Yifei Ma, Zimo Zhao, Zipei Song, Alva C. J. Orr, Mengmeng Li, Waqas Kamal, Jinge Guo, Alfonso A. Castrejón‐pita, Steve J. Elston, Stephen M. Morris, Chao He   +12 more
wiley   +1 more source

Ultrapure and efficient electroluminescence in alkali metal doped inorganic perovskite quantum wires arrays. [PDF]

Nat Commun
Cao YB, Fu Y, Zhou Y, Qiu X, Zhang D, Ding Y, Xie Y, Ren B, Shan Q, Chan PF, Tang W, Xue F, Sun X, Zhou K, Liao JF, Jin Z, Zhang Q, Wang J, Kuang DB, Lu X, Lin Y, Zeng H, Fan Z.   +22 more
europepmc   +1 more source

Hierarchical Twist: Chirality Across Scales in Cellulose Cholesterics

Advanced Optical Materials, EarlyView.
Hierarchical left‐ and right‐handed chiral nematic structures are observed in a solvent‐free thermotropic cellulose derivative. Free‐standing films show hierarchical twisted structures whose pitches respond differently to uniaxial strain: left‐handed pitches increase, ones decrease.
N. Monge, L.F.V. Pinto, E. Ferreira, P.L. Almeida, J.L. Figueirinhas, A.L. Carvalho, P.J. Sebastião, M.H. Godinho   +7 more
wiley   +1 more source

Never lose hope, regardless of how gloomy it gets - Fuji-san. [PDF]

Malays Fam Physician
Ahmad I, Abu Bakar R.
europepmc   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Stratification of insect diversity and daily activity patterns in the West African virgin forest Taï assessed by entomological Lidar. [PDF]

Sci Rep
Månefjord H, Yamoa AS, Gbogbo YA, Müller L, Runemark A, Kouakou BK, Boateng R, Huzortey AA, Badu IK, Wahlberg N, Brydegaard M, Zoueu JT, Anderson B, Li M.   +13 more
europepmc   +1 more source

Effects of Extreme Mirror Downscaling on Open Micro‐Fabry–Perot Spectral Responses and Resonant Mode Profiles

Advanced Photonics Research, EarlyView.
Extreme miniaturization of Fabry–Perot cavities has severe impacts on their spectral response and spatial distribution of the resonant modes. A fully analytical methodology is proposed accounting for the finite borders of the micromirrors to predict this behavior. Model validation relies on comparing with measurements obtained on silicon micro‐cavities
Ahmed Mahrous, Mohamed N. Ali, Mazen Erfan, Yasser M. Sabry, Diaa Khalil, Tarik Bourouina   +5 more
wiley   +1 more source

Could dark energy be changing over time? [PDF]

Proc Natl Acad Sci U S A
Mann A.
europepmc   +1 more source

Self‐Aligned Pillar Arrays Embedding Site‐Controlled Single Quantum Dots for Bright Nonclassical Light Emission

Advanced Photonics Research, EarlyView.
Tilted‐view scanning electron microscope images show arrays of self‐aligned etched GaAs triangular pillars hosting single quantum dots. The main image captures the as‐fabricated morphology prior to dielectric coating, highlighting their uniform geometry.
Gediminas Juska, Simone Varo, Nicola Maraviglia, John O’Hara, Salvador Medina, Luca Colavecchi, Francesco Mattana, Armando Trapala, Michael Schmidt, Agnieszka Gocalinska, Emanuele Pelucchi   +10 more
wiley   +1 more source

A global 1 km resolution daily surface longwave radiation product from MODIS satellite data from 2000-2023. [PDF]

Sci Data
Cheng J, Zeng Q, Sun H, Yamin G, Yang F, Guo M, Wu C.   +6 more
europepmc   +1 more source