Results 81 to 90 of about 91,007 (306)
Low resolution spectroscopy of ISOGAL sources: Search for early-type stars with infrared excess [PDF]
, 2002 11 pages, 7 figures, accepted for publication to A&AAn analysis of low resolution spectra and infared data of 29 ISOGAL-DENIS sources with mid-IR excess is presented.
Sevre, F. +13 more
core +1 more source
Advanced Engineering Materials, EarlyView.Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali +5 more
wiley +1 more source
The Astronomical JournalThe MIRI Excesses Around Degenerates (MEAD) Survey is a Cycle 2 JWST program designed to image nearby white dwarfs with MIRI at 10 and 15 μ m. This survey targeted 56 white dwarfs within 25 pc to search for mid-infrared excesses, flux deficits from ...
Sabrina Poulsen +16 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees +6 more
wiley +1 more source
The infrared excess of G29-38: A brown dwarf or dust? [PDF]
, 1990 The white dwarf star G29-38 has an infrared excess which may be due to a cool low-mass companion, probably a brown dwarf, or to circumstellar dust. If the excess is due to dust, then changes in luminosity of the white dwarf, which is a ZZ Ceti variable ...
Neugebauer, G. +3 more
core
Laser‐Induced Graphene from Waste Almond Shells
Advanced Functional Materials, EarlyView.Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova +9 more
wiley +1 more source
Optical and Near-Infrared Imaging of Infrared-Excess Palomar-Green Quasars
The Astronomical Journal, 2001 Ground-based high spatial resolution (FWHM 0.46). In all cases, the host galaxies of the QSOs were detected, and most have discernible two-dimensional structure. The QSO host galaxies and the QSO nuclei are similar in magnitude at H band. H-band luminosities of the hosts range from 0.5–7.5 L*, with a mean of 2.3 L*, and are consistent with those ...
Jason A. Surace +2 more
openaire +3 more sources
A Search for Asymmetric Kinematic Components in Circumstellar Envelopes Using OH Main Line Masers
The Astrophysical JournalCircumstellar OH maser lines are useful for studying the dynamics of the circumstellar envelope (CSE) around evolved stars. This study aims to identify CSEs around cold stars, which exhibit deviations from the spherical expansion, by comparing the ...
Jia-Yong Xie +2 more
doaj +1 more source
Near-Infrared Switching of Light-Guided Random Laser
IEEE Photonics Journal, 2018 We report on all-optical modulation and switching of light-guided random laser emission in optically pumped dye-doped nematic liquid crystals, whereby a continuous-wave near-infrared beam at 1.064 μm, nonresonant with the medium and ...
Sreekanth Perumbilavil +2 more
doaj +1 more source
Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework
Advanced Functional Materials, EarlyView.The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu +13 more
wiley +1 more source