Results 41 to 50 of about 37,613 (291)

Free-space quantum key distribution [PDF]

, 1998
A working free-space quantum key distribution (QKD) system has been developed and tested over a 205-m indoor optical path at Los Alamos National Laboratory under fluorescent lighting conditions.
Buttler, W. T., Hughes, R. J., Kwiat, P. G., Luther, G. G., Morgan, G. L., Nordholt, J. E., Peterson, C. G., Simmons, C. M.   +7 more
core   +2 more sources

Multifunctional Crushing and Piezoresistive Self‐Sensing in Conductive Epoxy/CNT‐Coated Polyetherimide TPMS Lattices

Advanced Engineering Materials, EarlyView.
This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay, J. Schneider, P. Harrison, S. Kumar   +3 more
wiley   +1 more source

Study on the flow field and structural stress field of the primary retarder considering the throttling characteristics of the valve

Advances in Mechanical Engineering
The valve plays an important role in the control of the filling rate ( q fill ) and braking characteristics of the hydrodynamic retarder (HR). However, the dynamic throttling characteristics of the valve were rarely considered in previous studies ...
Huanhui Zhou, Zilin Ran, Hu Dai, Weida Yang, Xianwei Chen   +4 more
doaj   +1 more source

Interstitial hygrothermal analysis for retrofitting exterior concrete wall of modern heritage building in Korea

Case Studies in Construction Materials, 2022
Retrofitting modern heritage buildings aims at not only energy conservation, but also restoration and preservation of an architectural artefact. However, if envelope construction is adjusted and HVAC systems are replaced, the temperature and humidity ...
Yena Chae, Sean Hay Kim
doaj   +1 more source

Highly efficient broadband polarization retarders and tunable polarization filters made of composite stacks of ordinary wave plates

, 2014
By using the formal analogy between the evolution of the state vector in quantum mechanics and the Jones vector in polarization optics, we construct and demonstrate experimentally efficient broadband half-wave polarization retarders and tunable ...
Dimova, Emiliya St., Ivanov, Svetoslav S., Popkirov, George St., Vitanov, Nikolay V.   +3 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Research of the Braking Performance and Optimization Design of Heavy Duty Construction Vehicle Eddy Current Retarder

Jixie chuandong, 2015
For the issues of design preferences,braking force fluctuation of eddy current retarder of heavy duty construction vehicle during use,the heavy duty construction vehicle eddy current retarder is regarded as research object,the calculation formula of ...
Ni Jinshang
doaj  

Wavelength-Diverse Polarization Modulators for Stokes Polarimetry

, 2010
Information about the three-dimensional structure of solar magnetic fields is encoded in the polarized spectra of solar radiation by a host of physical processes.
Asensio Ramos, Collados, del Toro Iniesta, Elmore, Faurobert-Scholl, Gandorfer, Gisler, Goode, Hale, Hanaoka, Keil, Lites, López Ariste, López Ariste, Ma, McKay, Rüedi, Samoylov, Socas-Navarro, Stenflo, Stenflo, Stenflo, Stenflo, Tomczyk, Trujillo Bueno, Xu, Štepán   +26 more
core   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Analysis of the Braking Performance of the Hydraulic Retarder in Mining Dump Truck based on AMESim

Jixie chuandong, 2016
The hydrodynamic retarder is one of the important auxiliary braking system in mining dump truck,which has an important influence on the braking force distribution and braking performance of the vehicle.
Deng Lin
doaj