Results 71 to 80 of about 784,385 (282)
Advanced Materials Interfaces, EarlyView.Sputtered WS2 films were investigated in terms of their S‐ and O‐concentration depending on deposition power and pre‐sputter time. Chemical and structural investigations were done using EDS, TEM, SEM, AFM, XRD. In general, 20 W films exhibit a wide variation in stoichiometry and structure whereas 80 W films demonstrate a higher S/W ratio than 20 W ...
Theresa Scheler +4 more
wiley +1 more source
MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band
Advanced Materials Technologies, EarlyView.An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi +3 more
wiley +1 more source
Le paysage spatial : de l’Ecole de Barbizon aux Pulp magazines
ReS Futurae, 2015 Le début du xxe siècle hérite non seulement des avancées techniques portées par les suites de la Révolution industrielle mais également des principes humanistes lesquels la science doit être à la portée de tous.
Elsa De Smet
doaj +1 more source
, 2013 The goal of the .Astronomy conference series is to bring together astronomers, educators, developers and others interested in using the Internet as a medium for astronomy.
Bauer, Amanda +11 more
core
Experimental Evidence of Free Carrier Generation in 2D Hybrid Organic–Inorganic Perovskites
Advanced Optical Materials, EarlyView.ABSTRACT Despite the significant potential of 2D hybrid organic–inorganic perovskites (2DHOIPs) for high‐efficiency optoelectronics application‐comparable to their 3D counterparts, the fundamental carrier photogeneration remains unclear. In contrast to conventional ultrafast optical property characterization, we use ultrafast photocurrent spectroscopy ...
Tuhin Ghosh +8 more
wiley +1 more source
The Unified Astronomy Thesaurus: Semantic Metadata for Astronomy and Astrophysics
, 2018 Several different controlled vocabularies have been developed and used by the astronomical community, each designed to serve a specific need and a specific group.
Accomazzi, Alberto, Frey, Katie
core +1 more source
Advanced Optical Materials, EarlyView.Field‐induced periodic defect patterns in the ferroelectric nematic liquid crystal phase act as optically selective photomasks. Created in the liquid crystal cells with bare electrodes, their periodicity is controlled by the applied frequency and cell gap. When used as photomasks, these patterns modulate transmitted light, whose spatial characteristics
Rajalaxmi Sahoo +4 more
wiley +1 more source
Open-Loop Wavefront Reconstruction with Pyramidal Sensors Using Convolutional Neural Networks
MathematicsNeural networks have significantly advanced adaptive optics systems for telescopes in recent years. Future adaptive optics systems, especially for extremely large telescopes, are expected to predominantly employ pyramid wavefront sensors, which offer ...
Saúl Pérez-Fernández +7 more
doaj +1 more source
The introductory astronomy course at the University of Cape Town: probing student perspectives
, 2014 We report on research carried out to improve teaching and student engagement in the introductory astronomy course at the University of Cape Town. This course is taken by a diverse range of students, including many from educationally disadvantaged ...
Allie, Saalih +2 more
core +2 more sources
Midbrain PAG Astrocytes Modulate Mouse Defensive and Panic‐Like Behaviors
Advanced Science, EarlyView.Astrocytes in the midbrain periaqueductal gray (PAG) dynamically encode threat intensity and shape defensive action selection in mice. Real‐time Ca2+ imaging reveals robust astrocytic activation during predator odor and CO2 exposure. Aberrant astrocytic Ca2+ overactivation disrupts goal‐directed escape, biases behavior toward freezing, and induces ...
Ellane Barcelon +10 more
wiley +1 more source