Results 91 to 100 of about 1,120,334 (339)

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Towards Precision LSST Weak-Lensing Measurement - I: Impacts of Atmospheric Turbulence and Optical Aberration

, 2011
The weak-lensing science of the LSST project drives the need to carefully model and separate the instrumental artifacts from the intrinsic lensing signal.
Bridle S., Claver C. F., J. Anthony Tyson, Kolmogorov A., M. James Jee, Press W. H., Radeka V., Rowe B., Sasiela R. J., Takacs P. Z., von Kármán T.   +10 more
core   +1 more source

Wide field interferometric imaging with single-mode fibers [PDF]

, 2002
Classical single-mode fiber interferometers, using one fiber per aperture, have very limited imaging capabilities and small field of view. Observations of extended sources (resolved by one aperture) cannot be fully corrected for wavefront aberrations ...
Berger, Berger, Coudé du Foresto, Coudé du Foresto, Guyon, Labeyrie, Malbet, Mariotti, Mariotti, O. Guyon, Ruilier, Shaklan, Warner   +12 more
core   +2 more sources

The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO)

, 2011
The Atmospheric Imaging Assembly (AIA) provides multiple simultaneous high-resolution full-disk images of the corona and transition region up to 0.5 R⊙ above the solar limb with 1.5-arcsec spatial resolution and 12-second temporal resolution.
J. Lemen, A. Title, D. J. Akin, P. Boerner, C. Chou, J. Drake, D. Duncan, C. Edwards, F. Friedlaender, G. F. Heyman, N. Hurlburt, N. Katz, G. Kushner, M. Levay, R. Lindgren, D. Mathur, Edward L. McFeaters, Sarah D. Mitchell, R. Rehse, C. Schrijver, Larry Springer, Larry Springer, R. Stern, T. Tarbell, J. Wuelser, C. J. Wolfson, C. Yanari, J. Bookbinder, P. Cheimets, D. Caldwell, E. DeLuca, R. Gates, L. Golub, Sang C. Park, W. Podgorski, R. Bush, P. Scherrer, M. Gummin, Peter L. Smith, G. Auker, P. Jerram, P. Pool, R. Soufli, D. Windt, S. Beardsley, M. Clapp, J. Lang, N. Waltham   +47 more
semanticscholar   +1 more source

Performance evaluation of adaptive optics for atmospheric coherent laser communications.

Optics Express, 2014
With extremely high sensitivity, the coherent laser communications has a large potential to be used in the long-range and high data-rate free space communication links. However, for the atmospheric turbulent links, the most significant factor that limits
Chao Liu, Shanqiu Chen, Xinyang Li, H. Xian   +3 more
semanticscholar   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Impacts of Transboundary Dust Transport on Aerosol Pollution in the Western Yangtze River Delta Region, China: Insights Gained From Ground‐Based Lidar and Satellite Observations

Earth and Space Science, 2021
Dust storms pose a serious threat to air quality and public health through large‐scale, long‐distance transport. In early April 2018, two severe dust storm events occurred in the Taklimakan and Gobi Deserts in northwestern China.
Hao Yang, Zhiyuan Fang, Ye Cao, Chenbo Xie, Tian Zhou, Bangxin Wang, Kunming Xing, Simone Lolli   +7 more
doaj   +1 more source

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

The AzTEC mm-Wavelength Camera [PDF]

, 2008
AzTEC is a mm-wavelength bolometric camera utilizing 144 silicon nitride micromesh detectors. Herein we describe the AzTEC instrument architecture and its use as an astronomical instrument. We report on several performance metrics measured during a three
C. M. Roberts, C. R. Predmore, D. Lydon, G. W. Wilson, Goldsmith P., J. E. Austermann, J. Glenn, J. J. Bock, K. S. Scott, K. Souccar, M. S. Yun, Mather J. C., Mauskopf P. D., P. A. R. Ade, P. D. Mauskopf, S. Kim, S. R. Golwala, T. A. Perera, Tucker C. E., Y. Kang   +19 more
core   +4 more sources

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source