Results 61 to 70 of about 3,891 (249)

Observation of higher-order deterministic optical vortices from random vortex beams

APL Photonics
Optical vortices in coherent beams have been identified as spiral phases with intensity nulls at singularities, while in random beams, they appear as coherence vortices in correlation functions, often not matching intensity nulls. Observing deterministic
Yonglei Liu, Siyu Xu, Peipei Peng, Yongtao Zhang, Siting Dai, Yahong Chen, Yangjian Cai, Fei Wang   +7 more
doaj   +1 more source

Coupled Fractional Fourier Transform: Properties and Uncertainty Principle

Journal of the Indonesian Mathematical Society
The coupled fractional Fourier transform is a general form of the fractional Fourier transform. In the present work, we demonstrate basic properties of the proposed transformation, such as linearity, shifting and modulation. We also propose convolution and correlation theorems and then explore a generalized uncertainty principle for the coupled ...
openaire   +1 more source

Synthesis of AgBiS2 and AgInS2 Based on Formation Energies in Sulfur‐Rich Reducing Flame

Advanced Functional Materials, EarlyView.
High‐surface‐area AgInS2 and AgBiS2 nanoparticles were synthesized via enclosed flame spray pyrolysis by tuning flame conditions and formation energies to guide phase formation. Flame parameters were tuned to suppress oxides and enable pure sulfide phase growth.
Muhammad Ali Martuza, Marco Schowalter, Andreas Rosenauer, Olga V. Kuharenko, Christian Rossner, Johannes Birkenstock, Lutz Mädler, Suman Pokhrel   +7 more
wiley   +1 more source

The Novel Analytical Methods for the Solutions of Generalized-fractional Order Differential Equations Arising in Physical Models [PDF]

, 2018
Fractional calculus is a branch of calculus that generalizes the derivative of a function to arbitrary order. In contemporary years, fractional calculus has become the focus of curiosity for many researchers in exclusive disciplines of applied science ...
Sahoo, Subhadarshan
core  

Decoupling Light Absorption From Photocatalytic Reactivity in TiO2 via Defect and Interfacial Engineering

Advanced Functional Materials, EarlyView.
A hybrid photoprotective material integrates N‐doped TiO2 with a metal‐phenolic network (MPN) to achieve broad‐spectrum attenuation and robust reactive oxygen species (ROS) suppression. Nitrogen doping extends attenuation into the UVA/high energy visible light (HEV) regions and facilitates fast charge recombination to inhibit ROS formation.
Saehan Choi, Heewon Kim, Dongwoo An, KwangHo Lee, Minkyoung Kim, Yunhwa Hong, Kwang Heo, Jongwon Shim, EunAe Cho, Yoonsung Nam   +9 more
wiley   +1 more source

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

Research on Key Technology of Low-Cost GNSS Receiver in Harsh Environment [PDF]

, 2020
The global navigation satellite system (GNSS) is playing a uniquely significant role in the navigation of military and civil since it is superior in providing high-precision, all-weather, all-time positioning, navigation and timing solutions.
Luo, Yiran
core   +1 more source

Performance Enhancement of Tin Chloride‐Incorporated Ferroelectric Polymer‐Based Artificial Synapse for Hardware Neural Networks

Advanced Functional Materials, EarlyView.
This paper proposes a highly efficient ferroelectric artificial synapse device based on an oxide semiconductor and SnCl2‐inserted P(VDF‐TrFE) gate dielectric layer. This FeFET significantly improved the synaptic performance due to the ion‐dipole interaction.
Hyun‐Soo Kim, Hyunkyu Lee, Yeonho Choi, Won Young Jang, Hyungmin Kim, Krishna Moorthy Ponnusamy, Hongseung Lee, Jaewook Yoo, Ji Ye Lee, S. Chandramohan, Seongin Hong, Hagyoul Bae, Hyeon‐Sik Jang, Sang Yeol Lee, Keun Heo   +14 more
wiley   +1 more source

Impact of stochastic fluctuations on proton beams under space-charge effects [PDF]

, 2008
Transient electric-current fluctuations arising from power supplies can be translated into magnetic-field perturbations during particle-accelerator operations. As speculated over the past decades, it is probable such inevitable machine imperfection leads
Yoon, Phil
core   +1 more source

Mimicking Silent Synapse Recruitment: A SiOx/Cu‐Pancake Memristive Device For Analog Neuromorphic Computing

Advanced Functional Materials, EarlyView.
Electroforming‐free TiN/SiOx/Cu/SiOx/TiN memristive devices exploit pancake‐like Cu nanoparticles embedded in a SiOx double layer to create a heterogeneous Schottky‐barrier landscape. Under bias, oxygen‐vacancy redistribution progressively lowers local barriers and recruits initially inactive Cu‐PC pathways into a parallel conduction ensemble, enabling
Rouven Lamprecht, Ole Gronenberg, Sahitya Yarragolla, Tobias Gergs, Richard Marquardt, Victor Witte, Jürgen Carstensen, George Popkirov, Jan Trieschmann, Lorenz Kienle, Hermann Kohlstedt   +10 more
wiley   +1 more source