Results 41 to 50 of about 336,650 (307)

Geometrical Phase Optical Components: Measuring Geometric Phase without Interferometry

Crystals, 2020
Optical components that are based on Pancharatnam–Berry phase feature a polarization-dependent diffraction that can be used to fabricate lenses and gratings with unique properties.
Oriol Arteaga, Hana Bendada
doaj   +1 more source

Building Paraxial Optical Skyrmions Using Rational Maps

Advanced Photonics Research, 2023
A simple mathematical expression based on rational maps to describe all optical paraxial skyrmion known to date, including Néel‐type and Bloch‐type skyrmions, bimerons, and anti‐skyrmions, is introduced. This expression is derived solely from topological
Claire Cisowski, Calum Ross, Sonja Franke-Arnold   +2 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

High-efficiency multilayer grating for enhanced tender x-ray photoelectron spectroscopy

Scientific Reports
X-ray Photoelectron Spectroscopy (XPS) is a powerful tool for probing the chemical and electronic states of materials with elemental specificity and surface sensitivity.
Wai Jue Tan, Arindam Majhi, Wadwan Singhapong, Andrew C. Walters, Matthijs A. van Spronsen, Georg Held, Burcu Karagoz, David C. Grinter, Pilar Ferrer, Guru Venkat, Qiushi Huang, Zhe Zhang, Zhanshan Wang, Patrick Yuheng Wang, Andrey Sokolov, Hongchang Wang, Kawal Sawhney   +16 more
doaj   +1 more source

Polarized photoelectrons from converging vector waves

New Journal of Physics, 2022
This paper investigates the spin characteristics of photoelectrons when hydrogen-like ions are centro-symmetrically irradiated with converging vector waves—a non-paraxial form of structured light.
B Hafizi, D Younis, D F Gordon
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Hyperbolic metamaterial empowered controllable photonic Weyl nodal line semimetals

Nature Communications
Motivated by unique topological semimetals in condensed matter physics, we propose an effective Hamiltonian with four degrees of freedom to describe evolutions of photonic double Weyl nodal line semimetals in one-dimensional hyper-crystals, which ...
Shengyu Hu, Zhiwei Guo, Wenwei Liu, Shuqi Chen, Hong Chen   +4 more
doaj   +1 more source

Technology of Three-Dimensional Scanning “Structured Light”

Digital Presentation and Preservation of Cultural and Scientific Heritage, 2014
Protection and preservation of cultural and historical heritage are particularly relevant today. The paper presents essence and challenges in the process of three-dimensional scanning of objects.
Todor Todorov, Nikolay Noev
doaj   +1 more source

Structuring light with flows

Nature Communications
Structured light has profoundly advanced optical manipulation, processing and imaging. However, its practical deployment in free space is limited by the constrained solutions of Helmholtz equation, which are bound to fixed propagation laws. Here, we reframe structured light as optical flows through a hydrodynamic description beyond the conventional ...
Wenxiang Yan, Zheng Yuan, Yuan Gao, Zhaozhong Chen, Zhi-Cheng Ren, Xi-Lin Wang, Jianping Ding, Hui-Tian Wang   +7 more
openaire   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source