Results 111 to 120 of about 24,715 (172)

Effect of crystalline lens decentration and tilt on visual performance in eyes implanted with bifocal or extended depth of focus intraocular lenses

BMC Ophthalmology
Purpose To explore the potential of crystalline lens decentration and tilt as indicators for screening cataract patients for presbyopia-correcting intraocular lens (IOL) implantation. Methods Prospective observational study.
Yu Zhang, Jiaqing Zhang, Chen Liang, Yifan Xu, Jiaying Wu, Junming Wu, Yifan Zhang, Aixia Jin, Xuhua Tan, Lixia Luo   +9 more
doaj   +1 more source

All‐Optically Driven Optofluidic Light Modulator

Advanced Optical Materials, EarlyView.
In this work, an all‐optically driven optofluidic light modulator is developed, based on the optical actuation of waveguided beams by liquid crystals confined in a microfluidic channel. The photovoltaic effect in lithium niobate is employed to control the alignment of the liquid crystal in the microfluidic channel underneath by a light‐induced electric
Riccardo Zamboni, Margherita Altin, Giovanni Bragato, Liana Lucchetti, Cinzia Sada, Annamaria Zaltron   +5 more
wiley   +1 more source

Colossal Terahertz Emission with Ultrafast Tunability Based on Van der Waals Ferroelectric NbOI2

Advanced Optical Materials, EarlyView.
The widespread THz applications are hindered by the scarcity of efficient ultrafast THz sources with on‐demand fast modulation and easy on‐chip integration capability. Here the discovery of colossal THz emission is reported from a van der Waals (vdW) ferroelectric semiconductor NbOI2 and demonstrates the ultrafast coherent control of the THz emission ...
Sujan Subedi, Wenhao Liu, Wuzhang Fang, Carter Fox, Zixin Zhai, Fan Fei, Yuan Ping, Bing Lv, Jun Xiao   +8 more
wiley   +1 more source

Prediction of near visual acuity for intraocular lens with an extended range of focus technology based on preoperative biometry data

Офтальмохирургия
Purpose. To develop a method for predicting near visual acuity at 40 cm after TECNIS Symphony IOL implantation based on preoperative biometry data. Material and methods.
E.V. Danilenko, A.N. Kulikov, N.V. Nevin
doaj   +1 more source

Detection of 2D SPT Order with Partial Symmetries [PDF]

arXiv
A method of using partial symmetries to distinguish two dimensional symmetry protected topological (SPT) phases of on-site, unitary symmetries is proposed. This novel order parameter takes a wavefunction, such as a ground state of a lattice model, and detects its SPT invariants as expectation values of finitely supported operators, without the need for
arxiv  

Thermal Dynamics Induced by Surface Acoustic Waves in Lanthanide‐Doped Core@Multishell Nanoparticles

Advanced Optical Materials, EarlyView.
Accurate local temperature readout in integrated nanoscaled devices driven by high‐frequency surface acoustic waves (SAWs) has a strong technological interest. This image illustrates how lanthanide‐doped core@multishell nanoparticles can be employed as local temperature probes in SAW applications.
Pablo B. Pinto, Pedro W. Matrone, Flávia S. Ferreira, Paulo V. Santos, Fernando A. Sigoli, Odilon D. D. Couto Jr.   +5 more
wiley   +1 more source

Beam Spliter and Localization Induced by Controlled Perturbations after Time Boundary [PDF]

arXiv
The recent investigation into the phenomena of refraction and reflection at temporal boundaries, conducted through the lens of spacetime duality, has attracted considerable scholarly interest. This duality unveils insights into the propagation behaviors of beams at the temporal boundaries of perturbed systems.
arxiv  

Toward Direct Laser Writing of Dual‐Layer Metasurfaces with the Plasmonic Phase‐Change Material In3SbTe2

Advanced Optical Materials, EarlyView.
A simple optical programming technique is developed for fabricating plasmonic nanoantennas in a dual‐layer metasurface by crystallizing the plasmonic phase‐change material In3SbTe2 from the top and through the substrate with a subsequent reamorphization step.
Lukas Conrads, Maike Kreutz, Lina Jäckering, Sebastian Meyer, Matthias Wuttig, Dmitry Chigrin, Thomas Taubner   +6 more
wiley   +1 more source

Management of endophthalmitis while preserving the uninvolved crystalline lens

Clinical Ophthalmology, 2012
Justin Townsend, Avinash Pathengay, Harry W Flynn Jr, Darlene MillerDepartment of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, Miller School of Medicine, Miami, FL, USABackground: The purpose of this work is to report on the ...
Townsend J, Pathengay A, Flynn Jr HW, Miller D   +3 more
doaj  

Intraoperative quantitative crystalline lens nuclear opacities analysis based on crystalline lenSx platform

BMC Ophthalmology
Purpose The main objective is to quantify the lens nuclear opacity using spectral-domain optical coherence tomography (SD-OCT) and to evaluate its association with Lens Opacities Classification System III (LOCS-III) system, lens thickness (LT), and ...
Ying Zhang, Yaya Zhang, Junting Zhang, Tao Wang, Luhui Yi, Yao Zeng, Guorong Zeng, Lingdong Kong, Bo Ye, Yunmin Yi   +9 more
doaj   +1 more source