Results 161 to 170 of about 6,351,115 (360)

Off-Axis Co-Optical Path Large-Range Line Scanning Chromatic Confocal Sensor

open access: yesPhotonic Sensors
This article proposes a line scanning chromatic confocal sensor to solve the problem of limited chromatic confocal measurement due to the small measurement range and low measurement efficiency in the industrial inspection process.
Meizhong Liao   +6 more
doaj   +1 more source

Large‐Scale In Situ Formation Perovskite Quantum Dots/Elastomer Composite for High‐Performance White Light‐Emitting Diodes

open access: yesAdvanced Science, EarlyView.
A solvent‐free, open‐mill shear protocol nucleates 2.6 nm CsPbBr3 QDs uniformly within brominated butyl rubber. The emitters showed 91% PLQY, 1189 ns lifetime, and > 90% retention after 30‐day ambient storage and water immersion, respectively. Board‐to‐board forms 17 × 17 cm2 flexible films for 132% NTSC white LEDs, scintillators, and stretchable ...
Yuxian Su   +6 more
wiley   +1 more source

Primitive Ligands Drive 1D CsPbI3 Nanostructures with Strongly Polarized Photoluminescence

open access: yesAngewandte Chemie, EarlyView.
This work illustration highlights I− concentration drives the structural evolution of CsPbI3 from cubic to orthorhombic phase, accompanied by octahedral distortion. In addition, increasing I− transforms nanorods into ginkgo‐leaf‐like assemblies, including a 659–683 nm PL redshift due to bandgap narrowing and strain effects.
Juan Xie   +12 more
wiley   +2 more sources

Self-referenced nonlinear interferometry for chromatic dispersion sensing across multiple length scales [PDF]

open access: green
Romain Dalidet   +4 more
openalex   +2 more sources

High‐Brightness, Wide‐Gamut, and High‐Resolution Structural Colors via Ultrafast Laser Oxidation of Ti/TiO2 Films

open access: yesAdvanced Science, EarlyView.
Ultrafast laser writing on titanium (Ti)–titanium dioxide (TiO2)–Ti sandwich films triggers controllable oxidation (〉200 nm) to create vivid, durable structural colors. The colors reach 〉 80% of the standard RGB (sRGB) gamut, up to 60% peak reflectance, and 30,000 dots per inch (DPI) resolution for art and anti‐counterfeiting.
Ruiyi Chen   +5 more
wiley   +1 more source

Broadband Achromatic Programmable Electromagnetic Camouflage via Fluidic‐Accessible Metasurface

open access: yesAdvanced Science, EarlyView.
A fluidic access metasurface enables dynamic, broadband electromagnetic illusions. By physically reconstructing conductive patterns with liquid metal, the metasurface achieves real‐time, pixel‐level control over phase dispersion. This allows for the programmable generation of arbitrary strong scattering point arrays, effectively deceiving high ...
Shipeng Liu   +14 more
wiley   +1 more source

Chromatic number in random scaled sector graphs

open access: yes, 2004
In this paper, we introduce a new model of random graph that we call random sector graph. This model aims to provide a tool for studying communication problems in networks of sensors using laser communication such as the ones addressed in the Smart Dust project.
Díaz Cort, Josep   +3 more
openaire   +1 more source

Design of Compact Liquid Crystal on Silicon Projection Optics Utilizing a Common Freeform Optical Path for Augmented Reality Displays

open access: yesAdvanced Intelligent Systems, EarlyView.
This study presents a compact freeform projection optics using dual wedge prisms for waveguide displays. Unlike previous designs that separate illumination and imaging paths, a freeform optical path integrates both. The system achieves a 32º field of view, 37.5 pixels per degree, and a total volume of less than 2 cm3.
Ximeng Wang   +5 more
wiley   +1 more source

Third Interger Resonance Slow Extraction Using RFKO at High Space Charge

open access: yes, 2011
A proposal to search for direct {\mu}-->e conversion at Fermilab requires slow, resonant extraction of an intense proton beam. Large space charge forces will present challenges, partly due to the substantial betatron tune spread. The main challenges will
Amundson, J.   +4 more
core  

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