Results 41 to 50 of about 123,664 (306)

The Influence of Annealing on the Sb Layer in the Synthesis of [001]‐Oriented Sb2Se3 Film for Photoelectrochemical Hydrogen Gas Generation

Advanced Functional Materials, EarlyView.
[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa, Moisés A. de Araújo, Joaquim Puigdollers, Pablo Ortega, Teresa Andreu, Cristobal Voz, Edgardo Saucedo, Lucia H. Mascaro   +7 more
wiley   +1 more source

Backscattering of Ions Impacting Ganymede’s Surface as a Source for Energetic Neutral Atoms

The Astrophysical Journal Letters
Jupiter’s largest moon Ganymede has its own intrinsic magnetic field, which forms a magnetosphere that is embedded within Jupiter’s corotating magnetospheric plasma.
Paul S. Szabo, Andrew R. Poppe, Andreas Mutzke, Lucas Liuzzo, Shane R. Carberry Mogan   +4 more
doaj   +1 more source

Exoplanet Terra Incognita

, 2018
Exoplanet surface imaging, cartography and the search for exolife are the next frontiers of planetology and astrophysics. Here we present an over-view of ideas and techniques to resolve albedo features on exoplanetary surfaces.
A Carbognani, B-O Demory, C Burke, C Maccone, D Morrison, D Sirbu, DM Fluri, F Feng, F Pont, G Anglada-Escudé, H Kawahara, HA Knutson, HN Russell, IAG Snellen, IJM Crossfield, IJM Crossfield, J Harrington, J Krissansen-Totton, JC Schwartz, JL Grenfell, M Bonnefoy, M Kaasalainen, MF Sterzik, MW Buie, NB Cowan, NB Cowan, P Ingraham, R Heller, R Heller, SV Berdyugina, SV Berdyugina, SV Berdyugina, SV Berdyugina, T Karalidi, TM Evans, VR Eshleman, VS Meadows, Y Fujii   +37 more
core   +1 more source

A Termite‐Inspired Alternative to Cement

Advanced Functional Materials, EarlyView.
A termite‐inspired composite of clay, cellulose, and lignin forms a dense fibrous network with concrete‐like strength (32 MPa) and superior elasticity, processed at ambient temperature. Abstract Clay combined with organic materials is used by termites as a strong and durable construction material for their mounds with minimal environmental impact. Here,
Oren Regev, Peter Fratzl, Emeline Raguin, Markus Antonietti   +3 more
wiley   +1 more source

Space Robotics: Robotic Rovers for Planetary Exploration

International Journal of Advanced Robotic Systems, 2008
In this third of three short papers, I introduce some of the basic concepts of planetary rovers with an emphasis on some specific challenging areas of research that are peculiar to planetary robotics and not usually associated with terrestrial mobile ...
Alex Ellery
doaj  

Combination ranging system and mapping radar [PDF]

, 1969
Transmitter, radiating at a right angle to the spacecraft trajectory and intersecting the surface at a shallow angle, yields accurate radar maps of lunar or planetary surfaces. Earth based station receives the signal reflected from the planetary surface.
Goldstein, R. M., Horttor, R. L.
core   +1 more source

High‐Entropy Perovskite Nanofibers for Bifunctional Air Electrodes in Reversible Protonic Ceramic Electrochemical Cells

Advanced Functional Materials, EarlyView.
High‐entropy perovskite nanofibers serve as robust and active bifunctional air electrodes in reversible protonic ceramic electrochemical cells. Their compositional complexity stabilizes the lattice, enriches oxygen vacancies, and accelerates surface exchange.
Hyeonggeun Kim, Incheol Jeong, Seeun Oh, Dongyeon Kim, Kang Taek Lee   +4 more
wiley   +1 more source

Geometric Parameters of Cutting Tools that Can be Used for Forming Sided Surfaces with Variable Profile

Archives of Metallurgy and Materials, 2017
This article describes machining technology of polyhedral surfaces with varying profile, which is provided by planetary motion of multiblade block tools. The features of the technology and urgency of the problem is indicated.
Razumov M., Grechukhin A., Maslennikov A.   +2 more
doaj   +1 more source

Resonant Removal of Exomoons During Planetary Migration [PDF]

, 2015
Jupiter and Saturn play host to an impressive array of satellites, making it reasonable to suspect that similar systems of moons might exist around giant extrasolar planets.
Adams, Fred C., Batygin, Konstantin, Spalding, Christopher   +2 more
core   +2 more sources

Multiple Twinning in Nacre and Aragonite

Advanced Functional Materials, EarlyView.
Electron backscatter diffraction map of a cluster of geologic aragonite, exhibiting single, double, and triple twins. The whole cluster is approximately 2 cm wide. Colors indicate crystal orientations, so that pixels where the a‐, b‐, and c‐axis is perpendicular to the image plane are green, red, and blue, respectively.
Connor A. Schmidt, William O. Nachlas, Bil Schneider, Xiaoming Mao, Eric Tambutté, Alexander A. Venn, Sylvie Tambutté, Pupa U. P. A. Gilbert   +7 more
wiley   +1 more source