Results 91 to 100 of about 7,316 (282)

Active cophasing and aligning testbed with segmented mirrors

Optics Express, 2011
An active segmented cophasing imaging testbed with a high accurate optical adjustment and control in nanoscale is set up. A two-dimensional dispersed fringe analysis method is used to calculate the piston error between the adjacent segments. Segments alignment of tip-tilt is fulfilled by overlapping diffraction pattern centroids of the individual ...
Weirui, Zhao, Genrui, Cao
openaire   +2 more sources

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source

Lightweight Metal Matrix Composite Segmented for Manufacturing High-Precision Mirrors [PDF]

, 2012
High-precision mirrors for space applications are traditionally manufactured from one piece of material, such as lightweight glass sandwich or beryllium.
Vudler, Vladimir
core   +1 more source

Surface quality of a 1m Zerodur part using an effective grinding mode [PDF]

, 2008
A new ultra precision large optics grinding machine, BoX(R), has been developed at Cranfield University. This machine is located at the UK's Ultra Precision Surfaces laboratory at the OpTIC Technium, North Wales.
P. Shore, D. Orton, P. Morantz, Shore, Paul, X. Tonnellier, Orton, D., Tonnellier, Xavier, Morantz, Paul   +7 more
core   +1 more source

Construction of a CKD-MBD osteoporosis animal model using adenine combined with high-phosphorus diet at different time intervals and gradient concentrations

Renal Failure
Recent advancements have led to the establishment of various animal models for chronic kidney disease-mineral and bone disorder (CKD-MBD), including 5/6 nephrectomy and drug induction.
Jiaru Lin, Jing Wang, Bingru Zhou, Lin Luo   +3 more
doaj   +1 more source

Lattice‐Matched 2D Template Enables Efficient Cesium Tin Halide Perovskite Solar Cells

Advanced Materials, EarlyView.
Lattice‐matched 2D perovskite PEA2CsSn2I7 templates the out‐of‐plane growth of inorganic 3D γ‐CsSnI3 along the (110) plane, forming highly oriented 2D/3D tin halide perovskite heterostructures. With reduced trap states and mitigated δ‐phase impurities, the CsSnI3‐based solar cells achieve a power conversion efficiency of 15.27% and maintain stable ...
Hongzhe Anna Xu, Dongxu He, Wencai Zhou, Julian A. Steele, Zhiliang Wang, Zitong Wang, Chengxi Zhang, Shanshan Ding, Bowei Zhang, Huiyuan Cheng, Mengmeng Hao, Jiangyu Hang, Can Zheng, Zilong Zheng, Peng Chen, Lianzhou Wang   +15 more
wiley   +1 more source

Back Actuators for Segmented Mirrors and Other Applications [PDF]

, 2004
Back actuators have been proposed as alternatives to edge actuators considered previously for use in aligning hexagonal segments of lightweight segmented astronomical mirrors planned for use in outer space.
Yang, Eui-Hyeok, Wiberg, Dean
core   +1 more source

Simulation and experimental verification of the precision finishing method for optical free-form surface segmentation.

PLoS ONE
Optical free-form surfaces are often used to manufacture optical components such as lenses and mirrors, and free zone surface optical components are widely used in aerospace optics.
Chenhua Jiang, Enzhong Zhang, Wei Zhang, Jiaqi Hu, Jiechen Guo, Xiaodong Li   +5 more
doaj   +1 more source

Landslide assessment considering spatial calibration zoning of physical and mechanical parameters of rock and soil mass

Zhongguo dizhi zaihai yu fangzhi xuebao
Landslide hazard assessment is a crucial component of regional landslide disaster risk warning and control. The distributed slope stability quantitative evaluation model SINMAP (stability index mapping) is widely used in landslide hazard assessment ...
Weimin YIN, Yuanyao LI, Xing LI, Ming LI, Le JU, Ou XIE   +5 more
doaj   +1 more source