Results 61 to 70 of about 4,018,158 (274)

Print‐and‐Plate Architected Electrodes for Electrochemical Transformations Under Flow

Advanced Functional Materials, EarlyView.
Typical flow cell electrodes are composed of stochastic porous carbon, limiting understanding of electrode structure‐performance relationships. This work describes an approach, termed “print‐and‐plate,” to prepare porous electrodes by direct ink writing followed by conformal metal coating.
Dylan M. Barber, Sofía Edgar, Michael S. Emanuel, Michael D. Nelwood, Bok Yeop Ahn, Benito Román‐Manso, Thomas Cochard, Justin Platero, Kiana Amini, Chris H. Rycroft, Shmuel Rubinstein, Michael J. Aziz, Jennifer A. Lewis   +12 more
wiley   +1 more source

SIMP J013656.5+093347 Is Likely a Planetary-mass Object in the Carina-Near Moving Group [PDF]

, 2017
We report on the discovery that the nearby (∼6 pc) photometrically variable T2.5 dwarf SIMP J013656.5+093347 is a likely member of the ∼200 Myr old Carina-Near moving group with a probability of >99.9% based on its full kinematics.
J. Gagn'e, J. Faherty, A. Burgasser, É. Artigau, Sandie Bouchard, L. Albert, D. Lafrèniere, R. Doyon, D. B. Gagliuffi   +8 more
semanticscholar   +1 more source

PSYM-WIDE: A Survey for Large-separation Planetary-mass Companions to Late Spectral Type Members of Young Moving Groups [PDF]

Astronomical Journal, 2017
We present the results of a direct imaging survey for very large separation (>100 au), low-mass companions around 95 nearby young K5–L5 stars and brown dwarfs.
M. Naud, 'Etienne Artigau, R. Doyon, L. Malo, J. Gagn'e, D. Lafrèniere, C. Wolf, Eugene A. Magnier Institut de recherche sur les exoplanetes, D. Physique, U. Montr'eal, Montr'eal, Qc, Canada., Canada-France-Hawaii Telescope Corporation, Hi, Usa, D. Magnetism, Carnegie Institution for Science, Washington, Dc, Nasa Sagan Fellow, R. S. O. Astronomy, Astrophysics, Australian National University, Canberra, act, Australia., Institute for Astronomy, U. Hawaii, Usa   +29 more
semanticscholar   +1 more source

Oxygen Doping Enables Tailored Built‐In Electric Fields in FeOCl/g‐C3N4 Heterojunctions for Enhanced Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
Oxygen‐doping modulated g‐C3N4 support enables a strong built‐in electric field (BIEF) in FeOCl‐OCN.This enhanced BIEF induces the rearrangement of Fe(II)/Fe(III) in FeOCl, which subtly improves intermediates adsorption and also reduces the energy barrier of *O production, thereby achieving efficient PMS activation with 1O2 and Fe(IV)= O as the primary
Ying Zeng, Hong Qin, Fuqi Wu, Jing Gao, Wenyang Li, Jiaqi Li, Shengyi Wu, Piao Xu, Cui Lai, Ziwei Wang   +9 more
wiley   +1 more source

Quantifying the Impact of the Dust Torque on the Migration of Low-mass Planets

The Astrophysical Journal, 2023
Disk solids are critical in many planet formation processes; however, their effect on planet migration remains largely unexplored. Here we assess this important issue for the first time by building on the systematic measurements of dust torques on an ...
Octavio M. Guilera, Pablo Benitez-Llambay, Marcelo M. Miller Bertolami, Martin E. Pessah   +3 more
doaj   +1 more source

Dust Settling and Rapid Planetary Migration [PDF]

, 2010
Planetary migration is essential to explain the observed mass-period relation for exoplanets. Without some stopping mechanism, the tidal, resonant interaction between planets and their gaseous disc generally causes the planets to migrate inward so efficiently that they plunge into the host star within the gaseous disc lifetime ($\sim $ 1-3 Myrs).
arxiv   +1 more source

A Survey For Planetary-mass Brown Dwarfs in the Taurus and Perseus Star-forming Regions [PDF]

, 2017
We present the initial results from a survey for planetary-mass brown dwarfs in the Taurus star-forming region. We have identified brown dwarf candidates in Taurus using proper motions and photometry from several ground- and space-based facilities ...
T. Esplin, K. Luhman
semanticscholar   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

Advanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal, Laura Calderón‐Rodríguez, Oksana Smirnova, Eren Grossmann, Aparna Binu Varghese, Karen Marlenne Garcia Alvarez, Andreas Schneemann, Thomas Hoyer, Ralf Wyrwa, Felix Helmut Schacher, Alexander Knebel   +10 more
wiley   +1 more source

Global models of planetary system formation in radiatively-inefficient protoplanetary discs [PDF]

, 2011
(Abridged) We present the results of N-body simulations of planetary systems formation in radiatively-inefficient disc models, where positive corotation torques may counter the rapid inward migration of low mass planets driven by Lindblad torques. The aim of this work is to examine the nature of planetary systems that arise from oligarchic growth in ...
arxiv   +1 more source

PLANETS AROUND LOW-MASS STARS (PALMS). VI. DISCOVERY OF A REMARKABLY RED PLANETARY-MASS COMPANION TO THE AB DOR MOVING GROUP CANDIDATE 2MASS J22362452+4751425 [PDF]

, 2016
We report the discovery of an extremely red planetary-mass companion to 2MASS J22362452+4751425, a ≈0.6 M⊙ late-K dwarf likely belonging to the ∼120 Myr AB Doradus moving group. 2M2236+4751 b was identified in multi-epoch NIRC2 adaptive optics imaging at
B. Bowler, Michael C. Liu, D. Mawet, H. Ngo, L. Malo, G. Mace, J. McLane, Jessica R. Lu, Isaiah I. Tristan, S. Hinkley, L. Hillenbrand, E. Shkolnik, B. Benneke, W. Best   +13 more
semanticscholar   +1 more source