Results 61 to 70 of about 26,604 (215)

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

Advanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou, Tingjun Zhong, Sijie Liu, Pouya Nosratkhah, Ke Xu, Yuzhen Zhao, Kristiaan Neyts   +6 more
wiley   +1 more source

Ocular Morbidity among Orphanages

Journal of Nepal Medical Association, 2010
INTRODUCTION: The study assesses the spectrum of ocular morbidity and predictors of morbidity in children living in orphanages in the Kathmandu Valley.
M K Shrestha, L Wolf, U Shrestha, K Gurung, B S Chansi, P Dhungana, R Gurung, S Ruit   +7 more
doaj   +1 more source

Ultrawide Bandwidth Optomechanical Magnetometry Using Flux Concentration

Advanced Functional Materials, EarlyView.
High‐permeability flux concentrators enable ultrawide‐bandwidth chip‐scale optomechanical magnetometry by exploiting magnetic nonlinearity to up‐convert low‐frequency fields to the mechanical resonance, where sensitivity is optimal. This enables flat wideband operation over more than four orders of magnitude, from tens of kilohertz to sub‐hertz ...
Benjamin J. Carey, Nathaniel Bawden, Fernando Gottardo, James S. Bennett, Douglas Bulla, Scott Foster, Warwick P. Bowen   +6 more
wiley   +1 more source

Magnesium‐Based Transient Bioelectronics, Bio‐Optics and Bio‐Scaffolds

Advanced Functional Materials, EarlyView.
This paper reviews the state of the art and recent advances in magnesium‐based thin‐film, foils, and scaffolds for applications in transient bio‐optics, bioelectronics and tissue engineering. The design principles, fabrication methods, material properties, and integration strategies are discussed in detail.
Massimo Mariello, Yves Leterrier
wiley   +1 more source

Efecto de la queratotomía hexagonal sobre la acomodación en hipermetropías primarias Effect of hexagonal keratotomy on accomodation in primary hypermetropies

Revista Cubana de Oftalmología, 2000
Se realiza un estudio prospectivo en 71 ojos operados, de 44 pacientes en edad no présbita, con hipermetropía primaria realizando la técnica de queratotomía hexagonal, con el fin de analizar el comportamiento de la amplitud de acomodación, medida con el ...
José Alberto Cortés Amador, Enrique J. Machado Fernández, María del C. Benítez Merino, Yamila Díaz Parra, Jorge L. Iglesias   +4 more
doaj  

Enhanced Tantalum Superconducting Resonator Performance via All‐Surface Organic Monolayer Passivation

Advanced Functional Materials, EarlyView.
The internal quality factor of tantalum superconducting resonators is significantly increased by ∼140% in the low photon regime by passivating their surfaces with a high‐quality alkene self‐assembled monolayer. Our methodology promises to enhance the performance of superconducting quantum circuits.
Harsh Gupta, Moritz Singer, Benedikt Schoof, Anna Cattani‐Scholz, Shreya Sharma, Luca Rommeis, Marc Tornow   +6 more
wiley   +1 more source

Impact of growth parameters on refraction and ocular biometry in Chinese preschool children (3–6 years): the Beijing children eye study

Frontiers in Pediatrics
BackgroundThis study aims to investigate the relationship between growth and ocular biometry/refraction in preschool children aged 3–6 years.MethodsThis study performed a retrospective evaluation utilizing anonymized data from a pre-existing cohort of ...
Chao Wang, Jing Yuan, Qing Xu, Aimin Jiang   +3 more
doaj   +1 more source

Mechanistic Control of C─H Bond Activation and C─C Coupling in Light‐Driven Methane Conversion to C2+ Products over Multifunctional Photocatalysts

Advanced Functional Materials, EarlyView.
Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu, Yuheng Jiang, Vitaly V. Ordomsky, Bastian Mei, Zhiyong Tang, Andrei Y. Khodakov   +5 more
wiley   +1 more source

Cirugía refractiva corneal por queratomileusis in situ asistida por láser de excímeros Corneal refractive surgery for Laser-Assisted in Situ Keratomileusis

Revista de Ciencias Médicas de Pinar del Río, 2012
Introducción: la cirugía refractiva es una subespecialidad que comprende todos los procedimientos quirúrgicos dirigidos a modificar la refracción ocular en sus distintas ametropías: astigmatismo, miopía, hipermetropía y presbicia.
Eduardo Rojas Álvarez, Janet González Sotero, Ariadna Pérez Ruiz, Rolando Iviricu Tielves   +3 more
doaj  

Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells

Advanced Functional Materials, EarlyView.
Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam, Wejdan Althobaiti, Safakath Karuthedath, Christopher E. Petoukhoff, Amr Dahman, Khawla Alkhezaim, Oleksandr Matiash, José P. Jurado, Mariia Ferree, Ning Su, Jacob Blaskovits, Denis Andrienko, Vladimir Dyakonov, Andreas Sperlich, Vojtech Nádaždy, Tobin J. Marks, Antonio Facchetti, Frédéric Laquai   +17 more
wiley   +1 more source