Results 81 to 90 of about 634,808 (333)

An analysis of interplanetary solar radio emissions associated with a coronal mass ejection

, 2016
Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with comprehensive in situ and remote sensing observa- tions of a CME combining white ...
Bale, SD, Barnes, D, Bonnin, X, Bothmer, V, Davies, JA, Eastwood, JP, Krupar, V, Kruparova, O, Magdalenić, J, Maksimovic, M, Mrotzek, N, Oliveros, JCM, Pluta, A, Santolik, O, Soucek, J, Vourlidas, A   +15 more
core   +3 more sources

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Excellent color rendering index single system white light emitting carbon dots for next generation lighting devices

Scientific Reports, 2021
Recently, quantum dots (QDs) are finding enormous application in white light emitting diodes (WLEDs) and WLEDs with high color rendition are in high demand. QD-WLEDs use different color (Red, Blue, Green) emitting QDs to obtain white light.
Manasa Perikala, Asha Bhardwaj
doaj   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

Advanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat, Guido Barale, John Stavridis, Ehsan Norouzi, Jin‐Yoo Suh, Dong‐Ik Kim, Luca Iuliano, Abdollah Saboori   +7 more
wiley   +1 more source

Development of a High-Accuracy Spectral Irradiance Modeling for Evaluating Properties of Output Light from White Light-Emitting Diodes

Optics
An efficient method for evaluating the spectral irradiance properties of the white light of white LEDs is conducted. The method includes two main steps.
Quang-Khoi Nguyen, Quoc-Cuong Nguyen
doaj   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Unconventional Production of Bright White Light Emission by Nd-Doped and Nominally Un-Doped $\hbox{Y}_{2}\hbox{O}_{3}$ Nano-Powders

IEEE Photonics Journal, 2014
We report the production of a broad band (ranging from 400 to 900 nm) white light following the monochromatic infrared light (803.5 and 975 nm) excitation of both nominally un-doped and Nd3+-doped Y2O3 nano-powders, even up to 20% of Nd3+ content ...
G. Bilir, G. Ozen, J. Collins, M. Cesaria, B. Di Bartolo   +4 more
doaj   +1 more source

[2,2] Paracyclophanes-based double helicates for constructing artificial light-harvesting systems and white LED device

Nature Communications, 2023
The construction of efficient artificial light-harvesting systems (ALHSs) is of vital importance in utilizing solar energy. Herein, we report the non-covalent syntheses of double helicates PCP-TPy1/2 and R p,R p-PCP-TPy1/2 by metal-coordination ...
Zhe Lian, Jing He, Lin Liu, Yanqing Fan, Xuebo Chen, Hua Jiang   +5 more
doaj   +1 more source

A White Light Megaflare on the dM4.5e Star YZ CMi

, 2010
On UT 2009 January 16, we observed a white light megaflare on the dM4.5e star YZ CMi as part of a long-term spectroscopic flare-monitoring campaign to constrain the spectral shape of optical flare continuum emission.
Abbett, Allred, Allred, Andrews, Bond, Donati-Falchi, Favata, Fletcher, Hawley, Hudson, Hudson, Isobe, Jess, Kowalski, Maíz Apellániz, Metcalf, Osten, Reid, Robinson   +18 more
core   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source