Results 81 to 90 of about 2,070,111 (343)

Self‐Powered, Ultra‐Sensitive InGaAs/ITO Nanowire Radial Junction Infrared Photodiode for Low Flux Imaging at Room Temperature

Advanced Functional Materials, EarlyView.
This study reports a self‐powered InGaAs nanowire photodetector achieving single‐photon‐level sensitivity in the shortwave infrared at non‐cryogenic temperatures. The device demonstrates high‐speed imaging capabilities even under extremely low‐flux conditions.
Kosala Dhanawansha, Chaohao Chen, Zhe Li, Tuomas Haggren, Dawei Liu, Yang Yu, Baolei Liu, Sanjay Krishna, Hark H. Tan, Chennupati Jagadish, Lan Fu   +10 more
wiley   +1 more source

Dodecagonal quasicrystals: Construction of 2D lattices and demonstrations using laser pointers

Macedonian Journal of Chemistry and Chemical Engineering, 2022
Photographic slides of an aperiodic dodecagonal tiling were used as two-dimensional diffraction gratings to describe and demonstrate the basic properties of dodecagonal quasicrystals. This paper complements our earlier publication on Penrose (decagonal)
Vladimir M. Petrushevski, Sašo Kalajdžievski   +1 more
doaj  

Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics

Advanced Materials, EarlyView.
Here, local laser‐assisted phase transition from solution‐processed phase‐pure 1T′ to 2H MoS2 is shown to critically depend on the irradiation atmosphere. While processing in air leads to damaged insulating regions, inert conditions yield semiconducting 2H domains, enabling direct field‐effect transistor patterning with optimized lateral 1T′‐2H MoS2 ...
Anna Zhuravlova, Minjuan Li, Osamah Alharbi, Yeonsu Jeong, Bin Han, Lei Gao, Mischa Bonn, Mario Lanza, Sheng Yang, Antonio Gaetano Ricciardulli, Paolo Samorì   +10 more
wiley   +1 more source

Advanced fibre Bragg gratings: application to dispersion compensation

, 1999
This thesis presents the design and fabrication issues related to advanced fibre Bragg gratings with particular emphasis on realising novel devices with application to dispersion compensation.
Durkin, Michael Kevan
core   +1 more source

Aperiodic Diffract: Study of diffraction gratings

Modelling in Science Education and Learning, 2014
In this work we introduce a virtual laboratory, APERIODIC DIFFRACT, developed in Matlab GUI (Graphical User Interface) as an informatics tool for teaching the diffractive properties of aperiodic gratings.
Vicente Ferrando Martín, Arnau Calatayud, Laura Remón, Juan A. Monsoriu, Amparo Pons-Martí, Walter D. Furlan   +5 more
doaj   +1 more source

Defect‐Templated Phase Engineering in Atomically Thin Metals

Advanced Materials, EarlyView.
Graphene defects are transformed from passive imperfections into programmable templates for phase‐selective growth of atomically thin silver. Plasma‐generated boundary defects favor Ag(1), whereas sp3‐rich zero‐layer graphene promotes Ag(2). This defect‐directed intercalation links local graphene chemistry to crystalline phase, electronic structure ...
Arpit Jain, Boyang Zheng, Sawani Datta, Kanchan Ulman, Jakob Henz, Matthew Wei‐Jun Liu, Van Dong Pham, Wen He, Chengye Dong, Li‐Syuan Lu, Alexander Vera, Nader Sawtarie, Wesley Auker, Ke Wang, Bob Hengstebeck, Zachary W. Henshaw, Shreya Mathela, Maxwell Wetherington, William H. Blades, Kenneth Knappenberger, Ursula Wurstbauer, Su Ying Quek, Ulrich Starke, Shengxi Huang, Vincent H. Crespi, Joshua A. Robinson   +25 more
wiley   +1 more source

Laser light routing in an elongated micromachined vapor cell with diffraction gratings for atomic clock applications

Scientific Reports, 2015
This paper reports on an original architecture of microfabricated alkali vapor cell designed for miniature atomic clocks. The cell combines diffraction gratings with anisotropically etched single-crystalline silicon sidewalls to route a normally-incident
R. Chutani, V. Maurice, N. Passilly, C. Gorecki, R. Boudot, Moustafa Abdel Hafiz, P. Abbé, S. Galliou, J. Rauch, E. de Clercq   +9 more
semanticscholar   +1 more source

Higher-harmonic adaptation and the detection of squarewave gratings [PDF]

, 1987
Adaptation to a high contrast sinewave grating of 1 c/deg spatial frequency causes a large increase in the contrast threshold for a 1 c/deg test grating, but fails to raise the threshold for a squarewave grating of 0.33 c/deg, although the sensitivity of
Magnussen, S., Greenlee, Mark W., Svein Moagnussen, Mark W. Greenlee   +3 more
core   +1 more source

Elasticity‐Driven Periodic Polarization Patterns in a Chiral Ferroelectric Nematic Fluid

Advanced Materials, EarlyView.
Chiral polar ferroelectric nematic fluids exhibit spontaneous formation of stripe, square, and hexagonal polarization textures under confinement. Controlled by thickness and anchoring, these patterns produce spatially modulated nonlinear optical responses.
Anej Sterle, Peter Medle Rupnik, Luka Cmok, Aitor Erkoreka, Marta Lavrič, Natan Osterman, Calum J. Gibb, Jordan Hobbs, Josu Martinez‐Perdiguero, Richard J. Mandle, Alenka Mertelj, Nerea Sebastián   +11 more
wiley   +1 more source

Phase response of volume diffraction gratings [PDF]

EPJ Web of Conferences
Volume holography has long been a key area of research, with numerous applications in the field of photonics. In recent years, it has regained significant attention due to the ability of volume holograms to operate under off-axis conditions, enabling ...
Neipp Cristian, Sirvent Joan, Bravo Juan Carlos, Puerto Daniel, Francés Jorge, Gallego Sergi   +5 more
doaj   +1 more source