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The detection of O2+ and O+ ions over Saturn's main rings by the Cassini INMS and CAPS instruments at Saturn orbit insertion (SOI) in 2004 confirmed the existence of the ring atmosphere and ionosphere. The source mechanism was suggested to…

地球与行星天体物理 · 物理学 2015-06-03 W. -L. Tseng , R. E. Johnson , M. K. Elrod

In this study, we employ molecular simulations to investigate the enhancement in thermal conductance at the solid/liquid interface in the presence of a meniscus reported previously (Klochko et al., Phys. Chem. Chem. Phys. 25(4):3298-3308,…

软凝聚态物质 · 物理学 2024-08-23 Abdullah El-Rifai , Liudmyla Klochko , Sreehari Perumanath , David Lacroix , Rohit Pillai , Mykola Isaiev

Saturn's Moon Titan receives volatiles into the top of its atmosphere-including atomic oxygen-sourced from cryovolcanoes on Enceladus. Similar types of atmosphere exchange from one body to another, such as O2 and O3 sourced from TRAPPIST-1…

Modification of surfaces to enable dropwise condensation is a promising approach for achieving high condensation rates. In this work, we present an experimental study on condensation of water on copper surfaces coated with an ultrathin, 5…

Numerous geological features that could be evaporitic in origin have been identified on the surface of Titan. Although they seem to be water-ice poor, their main properties -chemical composition, thickness, stratification- are essentially…

地球与行星天体物理 · 物理学 2016-04-06 D. Cordier , T. Cornet , J. W. Barnes , S. M. MacKenzie , T. Le Bahers , D. Nna-Mvondo , P. Rannou , A. G. Ferreira

In principle, the MID-infrared Interferometric instrument (MIDI) at the Very Large Telescope Array (VLTI) should always measure the same calibrated total flux spectrum for a specific source, independent of the instrument settings and the…

天体物理仪器与方法 · 物理学 2013-12-13 Konrad R. W. Tristram

A theoretical study describing the coherence properties of near-field Raman scattering in two- and one-dimensional systems is presented. The model is applied to the Raman modes of pristine graphene and graphene edges. Our analysis is based…

介观与纳米尺度物理 · 物理学 2014-03-31 Luiz Gustavo Cançado , Ryan Beams , Ado Jorio , Lukas Novotny

We present a double-layer dielectric metasurface obtained by stacking a silicon nanodisc array and a silicon photonic crystal slab with equal periodicity on top of each other. We focus on the investigation of electric near-field enhancement…

The structure of an adsorption octadecanamide film at the planar toluene-water interface is studied by X-ray reflectometry using synchrotron radiation with photon energy of 15 keV. The electron density (polarizability) profiles, according…

软凝聚态物质 · 物理学 2020-04-22 Aleksey M. Tikhonov , Yurii O. Volkov

According to experimental data on X-ray scattering and reflectometry with the use of synchrotron radiation, a two-dimensional crystallization phase transition in a monolayer of melissic acid at the n-hexane - water interface with a decrease…

软凝聚态物质 · 物理学 2016-12-21 Aleksey M. Tikhonov

We used by in-situ high energy X-ray diffraction to inestigate the deformation behavior of Grade 2 commercially pure titanium that was hydrogen charged to form hydrides. The results showed that the peak broadening in the diffraction…

材料科学 · 物理学 2022-01-26 Qing Tan , Zhiran Yan , Runguang Li , Yang Ren , Yandong Wang , Baptiste Gault , Stoichko Antonov

The gas-phase and stellar metallicities have proven to be important parameters to constrain the star formation history of galaxies. However, HII regions associated with recent star-formation may not have abundances typical for the galaxy as…

宇宙学与河外天体物理 · 物理学 2017-03-22 Celine Peroux , Varsha P. Kulkarni , Donald G. York

[Abridged] The transmission of light through a planetary atmosphere can be studied as a function of altitude and wavelength using stellar or solar occultations, giving often unique constraints on the atmospheric composition. For exoplanets,…

地球与行星天体物理 · 物理学 2015-06-11 R. J. de Kok , D. M. Stam

Unknown changes in the crystalline order of regular TiO$_2$ result in the formation of black titania, which has garnered significant interest as a photocatalytic material due to the accompanying electronic changes. Herein, we determine the…

材料科学 · 物理学 2019-08-08 Brett Leedahl , Tristan de Boer , Xiaotao Yuan , Alexander Moewes

The characterization of the optical properties of the atmosphere in the near UV, in particular the tropospheric aerosol stratification, clouds optical depth and spatial distribution are common in the field of atmospheric physics, due to…

天体物理仪器与方法 · 物理学 2014-03-25 M. Buscemi , C. Cassardo , M. Cilmo , M. Coco , S. Ferrarese , F. Guarino , A. S. Tonachini , L. Valore , L. Wiencke

Strontium doped lanthanum manganite thin films were deposited by pulsed laser deposition on yttria stabilized zirconia single crystals for a comprehensive electrochemical characterization of the material acting as a cathode. A physically…

材料科学 · 物理学 2018-12-03 Francesco Chiabrera , Alex Morata , Merce Pacios , Albert Tarancon

HST/STIS observations of Uranus in 2015 show that the depletion of upper tropospheric methane has been relatively stable and that the polar region has been brightening over time as a result of increased aerosol scattering. This…

地球与行星天体物理 · 物理学 2018-08-29 Lawrence A. Sromovsky , Erich Karkoschka , Patrick M. Fry , Imke de Pater , Heidi B. Hammel

Several clues indicate that Titan's atmosphere has been depleted in methane during some period of its history, possibly as recently as 0.5-1 billion years ago. It could also happen in the future. Under these conditions, the atmosphere…

地球与行星天体物理 · 物理学 2015-06-22 Benjamin Charnay , François Forget , Gabriel Tobie , Christophe Sotin , Robin Wordsworth

A multi-decade record of ground-based mid-infrared (7-25 $\mu$m) images of Saturn is used to explore seasonal and non-seasonal variability in thermal emission over more than a Saturnian year (1984-2022). Thermal emission measured by 3-m and…

There are a handful of spectral windows in the near-IR through which we can see down to Venus' surface on the night side of the planet. The surface of our sister planet has thus been imaged by sensors on Venus-orbiting platforms (Venus…

地球与行星天体物理 · 物理学 2025-10-02 Anthony B. Davis