Results 81 to 90 of about 299,845 (304)
Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space
Advanced Materials, EarlyView.In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz +17 more
wiley +1 more source
Bidirectional drive and brake mechanism [PDF]
, 1991 A space transport vehicle is disclosed as including a body which is arranged to be movably mounted on an elongated guide member disposed in outer space and driven therealong.
Swan, Scott A.
core +1 more source
IOSR Journal of Mechanical and Civil Engineering, 2014 Nowadays people concentrate more and more on the comfort and operability of automobiles. Four wheel-drives in cars have become popular and are in demand in the automotive sector. But the advancement in two wheelers was limited. The concept of two wheel drive motorcycles was not successfully and economically implemented.
Ben Jose +3 more
openaire +1 more source
Electronic Structure Modulation Induced by Asymmetric Cu─Ni Centers in a π‐Conjugated Triazine MOF
Advanced Materials Interfaces, EarlyView.A π‐conjugated H3TATB‐based asymmetric bimetallic CuNi‐MOF was developed as an efficient electrocatalyst for alkaline hydrogen evolution. Benefiting from synergistic Cu–Ni interactions, enhanced charge transfer, and stabilized active sites, CuNi‐MOF delivers superior HER performance with low overpotential, improved kinetics, and 24 h durability.
Alamgir +7 more
wiley +1 more source
Optimization of a low weight electronic differential for LEVs [PDF]
, 2018 It is presented a performance analysis of an Electronic Differential (ED) system designed for Light Electric Vehicles (LEVs). We have developed a test tricycle vehicle with one front steering wheel and two rear fixed units is a same axis with a brushless
Andrés-Díaz, José Ramón +2 more
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Advanced Materials Technologies, EarlyView.Mesenchymal stem cell derived extracellular vesicles (MSC‐EVs) are a promising therapeutic tool for regenerative medicine. However, the field lacks a reproducible high‐yield production method to answer the quantities needed for clinical translation.
Christophe Wong +7 more
wiley +1 more source
Normalized Coupling Method for Speed Synchronization of Multi-Axis Driving Vehicles
International Journal of Advanced Robotic Systems, 2012 A new normalized coupling synchronization (NCS) method is proposed to solve the problem of synchronizing the speeds of all wheels in a multi-axis independent driving system without mechanical transmission connection. The NCS method integrates normalizing
Zhao Bin, Gao Feng, Lei Tian
doaj +1 more source
Energies, 2014 High power and miniaturization of motors in an in-wheel drive system, which is installed inside the wheels of a vehicle, are required for directly driving the wheels. In addition, an efficient cooling system is required to ensure high driving performance
Dong Hyun Lim +3 more
doaj +1 more source
Anti‐Slip Material‐Based Strategies and Approaches
Advanced Materials Technologies, EarlyView.This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani +3 more
wiley +1 more source
Perception enhancement for steer-by-wire systems [PDF]
, 2005 Modern automobiles are safer and more comfortable than ever before. If there is one criticism that can be made, however, it is that the achievement of higher levels of comfort has sometimes come at the expense of a lack of driver involvement. The issue
Giacomin, J
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