Results 81 to 90 of about 10,502,106 (355)
The Promise of Solid Lubricants for a Sustainable Future
Advanced Materials, EarlyView.Lubricants are vital for technology, saving energy and resources. The industry seeks sustainable solutions beyond fossil fuels. Solid lubricants offer extremely low friction and reduce environmental impact, especially in harsh conditions. Can these solids truly replace liquid lubricants, or are they limited to extreme applications?
Philipp G. Grützmacher +7 more
wiley +1 more source
Fiber-Connected Wavefront-Sensing System for Large Segmented Space Telescopes
IEEE Photonics Journal, 2023 A metrology system capable of cofocusing and cophasing is essential to ensure the performance of large segmented space telescopes, similar to that of monolithic telescopes, as well as to image the faintest galaxies.
Qi-Chang An +6 more
doaj +1 more source
Large Binocular Telescope view of the atmosphere of GJ1214b [PDF]
, 2015 The atmospheric composition and vertical structure of the super-Earth GJ1214b has been a subject of debate since its discovery in 2009. Recent studies have indicated that high-altitude clouds might mask the lower layers.
Bisogni, S. +10 more
core +2 more sources
A Green Bank Telescope Survey of Large Galactic HII Regions [PDF]
, 2017 As part of our ongoing HII Region Discovery Survey (HRDS), we report the Green Bank Telescope detection of 148 new angularly-large Galactic HII regions in radio recombination line (RRL) emission.
Anderson, L. D. +5 more
core +1 more source
Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization
Advanced Materials Interfaces, EarlyView.Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan +6 more
wiley +1 more source
The NIKA2 large-field-of-view millimetre continuum camera for the 30 m IRAM telescope [PDF]
, 2017 Context. Millimetre-wave continuum astronomy is today an indispensable tool for both general astrophysics studies (e.g. star formation, nearby galaxies) and cosmology (e.g. CMB - cosmic microwave background and high-redshift galaxies).
R. Adam +47 more
semanticscholar +1 more source
Search for Spectral Irregularities due to Photon-Axionlike-Particle Oscillations with the Fermi Large Area Telescope. [PDF]
Physical Review Letters, 2016 We report on the search for spectral irregularities induced by oscillations between photons and axionlike-particles (ALPs) in the γ-ray spectrum of NGC 1275, the central galaxy of the Perseus cluster.
M. Ajello +101 more
semanticscholar +1 more source
Development of High‐Performance Multilayer Monochromators
Advanced Optical Materials, EarlyView.Detailed insights into the optical and multilayer design of Double Multilayer Monochromators (DMM) are presented and fully characterized, including key optimization strategies and solutions to fabrication challenges. By integrating in‐house Ion Beam Figuring and a high uniformity multilayer coating process, the developed DMMs achieve high reflectivity,
Wadwan Singhapong +11 more
wiley +1 more source
Dust in External Galaxies [PDF]
, 2009 Existing (Spitzer Space Telescope) and upcoming (Herschel Space Telescope) facilities are deepening our understanding of the role of dust in tracing the energy budget and chemical evolution of galaxies.
Calzetti, Daniela
core +2 more sources
Medium-Energy Gamma-Ray Astrophysics with the 3-DTI Gamma-Ray Telescope [PDF]
, 2006 Gamma-ray observations in the medium energy range (0.50-50.0 MeV) are central to unfolding many outstanding questions in astrophysics. The challenges of medium-energy gamma-ray observations, however, are the low photon statistics and large backgrounds ...
Baker, Robert G +11 more
core +3 more sources