Results 111 to 120 of about 12,272 (307)
Advanced Materials, EarlyView.Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim +17 more
wiley +1 more source
The method of variation of constants and multiple time scales in orbital mechanics [PDF]
, 2002 The method of variation of constants is an important tool used to solve systems of ordinary differential equations, and was invented by Euler and Lagrange to solve a problem in orbital mechanics.
Newman, William I., Efroimsky, Michael
core
A Functional 2D Carbon Allotrope Combining Nanoporous Graphene and Biphenylene Segments
Advanced Materials, EarlyView.The synthesis of a novel nanoporous graphene (NPG) is reported with biphenylene segments via thermal fusion of 12‐armchair porous graphene nanoribbons grown on gold surfaces. Characterization using STM, AFM, and DFT reveals low‐defect semiconducting behaviour and tunable band gaps.
Paula Angulo‐Portugal +14 more
wiley +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
Strain-decoupled magnetism in flexible spintronic sensors
npj SpintronicsFlexible spintronic sensors provide contactless, vector-resolved readout for wearables, implantable bioelectronics, and microrobotics, yet strain-induced inverse magnetostriction disrupts anisotropy and compromises stability. Magnetoelasticity originates
Minsun Oh, Yubin Kim, Minjeong Ha
doaj +1 more source
Study of direct versus orbital entry for Mars missions. Volume 3 - Appendix A - Launch vehicle performance and flight mechanics [PDF]
, 1968 Titan 3 launch vehicle performance and flight mechanics analyses - direct versus orbital entry for Mars ...
Zeiner, H. N., Marquet, D. W.
core +1 more source
Spin‐Split Edge States in Metal‐Supported Graphene Nanoislands Obtained by CVD
Advanced Materials, EarlyView.Combining STM measurements and ab‐initio calculations, we show that zig‐zag edges in graphene nanoislands grown on Ni(111) by CVD retrieve their spin‐polarized edge states after intercalation of a few monolayers of Au. ABSTRACT Spin‐split states localized on zigzag edges have been predicted for different free‐standing graphene nanostructures.
Michele Gastaldo +6 more
wiley +1 more source
TASK Quarterly, 2012 A new method developed by Stanescu and Tabacu to study the mechanics of a particle moving along a definite curve is compared with the well-known approach applied in calculating the Kepler’s orbital motion.
STANISŁAW OLSZEWSKI
doaj
Gamification in studying celestial mechanics using Kerbal Space Program
Авіаційно-космічна техніка та технологіяThe rapid development of technologies and their implementation in the educational process provide an opportunity to apply gamification, that is, the use of game mechanics and elements for in-depth study of a complex technical discipline.
Pavlo Ponomarenko
doaj +1 more source
Determining orbital element on Earth Observation Repeat-Ground-Track orbit [PDF]
فصلنامه علوم و فناوری فضایی, 2016 This paper presents a new methodology for a quick and efficient numerical determination of the condition for repeat ground tracks to be employed in an orbital optimization design methodology. This methodology employs the simplicity and reliability of the
Payman Torabi, Abolghasem Naghash
doaj