Results 71 to 80 of about 5,829 (302)

Scalable, Bottom‐Up Synthesis of Transition Metal–Doped Quantum Confined, 1D Titanate‐Based Lepidocrocite Nanofilaments, Their Electronic Structures and Oxygen Evolution Reactivity

Advanced Materials Interfaces, EarlyView.
Quantum‐confined lepidocrocite titanate nanofilaments are doped, bottom‐up, with Mn+2, Fe+2, Co+2, Ni+2, and Cu+2 to tune electronic structure and catalysis. Doping narrows the bandgap—by up to ∼0.8 eV—and extends visible absorption. Ni‐doped filaments accelerate oxygen evolution (319 mV at 10 mA cm−2) and TM‐doped samples rapidly degrade rhodamine 6G (
Mohamed A. Ibrahim, Devraj Singh, Aidan McMoil, Mary Qin Hassig, Raja Janani, Joshua D. Snyder, Michel W. Barsoum   +6 more
wiley   +1 more source

Metal-polluted White Dwarfs with 21 μm IR Excesses from JWST/MIRI: Planets or Dust?

The Astronomical Journal
White dwarfs with metal pollution are caused by the accretion of rocky dust from tidally disrupted minor bodies and are signposts for planetary systems. These minor bodies are perturbed by planets that have survived post-main-sequence evolution.
John H. Debes, Sabrina Poulsen, Ashley Messier, Susan E. Mullally, Katherine Thibault, Loïc Albert, Misty Cracraft, Érika Le Bourdais, Patrick Dufour, Tom Barclay, J. J. Hermes, Mukremin Kilic, David Lafrenière, Fergal Mullally, William Reach, Elisa Quintana   +15 more
doaj   +1 more source

Development of Laterally Graded X‐Ray Multilayer Optics

Advanced Materials Technologies, EarlyView.
This work presents the development of laterally graded X‐ray multilayer optics with both constant and variable lateral gradients. By precisely controlling substrate speed profiles and mask design, these multilayers achieve highly accurate lateral gradients and excellent sagittal thickness uniformity, making them ideal for spectroscopy application at ...
Arindam Majhi, Wadwan Singhapong, Wai Jue Tan, Andrey Sokolov, Stefano Agrestini, Mirian Garcia‐Fernandez, Kejin Zhou, Andrew C. Walters, Chris Bowen, Alexander J.G. Lunt, Hongchang Wang, Kawal J. Sawhney   +11 more
wiley   +1 more source

Boosting decision trees for the selection of main belt asteroids in planetary ephemerides: An alternative model

Astronomy & Astrophysics
Context. One of the main bottlenecks in assessing the accuracy of the Mars orbit is the unknown value of the asteroids in the main asteroid belt. A modeling with 343 asteroids as point masses is used today, with the relative masses fit to observational ...
Mariani Vincenzo, Fienga Agnès, Murray Zachary, Gastineau Mickaël, Laskar Jacques   +4 more
doaj   +1 more source

Commission 20: Positions and Motions of Minor Planets, Comets, and Satellites (Positions et Mouvements des Petites Planètes, des Comètes et des Satellites) [PDF]

, 1985

openalex   +1 more source

Millisecond‐Switching Dual‐Band/Dual‐Polarization Ka‐Band Wavefront Control Enabled by a Complementary Liquid‐Crystal Metasurface

Advanced Materials Technologies, EarlyView.
An LCD‐compatible complementary liquid‐crystal metasurface delivers dual‐band, dual‐polarized Ka‐band wavefront control with millisecond switching via a 10‐µm LC gap. Interlaced patch/slot pairs enable independent phase tuning at 28 and 38 GHz, while strategic 45° slot rotation suppresses parasitic resonances. Measurements on a 160 × 160‐cell prototype
Daehyeon Kim, Donggeun An, Hyunjae Shin, Youngno Youn, Wonbin Hong   +4 more
wiley   +1 more source

Two faces of L-type asteroids

Astronomy & Astrophysics
Context. L-types are a rare class of asteroids whose spectra indicate similarities with CO and CV chondrites, suggesting high abundances of refractory inclusions, particularly with respect to the calcium-aluminium-rich inclusion.
Mahlke M., Marsset M., Devogèle M., Baklouti D., Beck P., Bonal L., Brunetto R., Lantz C., Tanga P.   +8 more
doaj   +1 more source

DIVISION III: COMMISSION 15: PHYSICAL STUDIES OF COMETS AND MINOR PLANETS [PDF]

, 2013
D. Bockelée–Morvan, R. Gil-Hutton, A. Cellino, Daniel Hestroffer, I. N. Belskaya, B. Davidsson, E. Dotto, A. Fitzsimmons, Daniel Hestroffer, Hideyo Kawakita, T. Mothé-Diniz, J. Licandro, Diane H. Wooden, Hajime Yano   +13 more
openalex   +1 more source

Laser Micromachining of Liquid Metal Patterns for Stretchable Electronic Circuits

Advanced Materials Technologies, EarlyView.
A cleanroom‐free fabrication strategy combines UV‐laser micromachining with a copper foil wetting layer to rapidly produce high resolution, liquid metal based stretchable electronic circuits on diverse substrates. The scalable, maskless process enables complex circuit designs (<$<$3 h, ∼$\sim$15/device) with excellent electrical stability under strain,
Merjen Palvanova, Patrick McManigal, Grace Fredrickson, Eric J. Markvicka   +3 more
wiley   +1 more source

DESTRUCTION OF BINARY MINOR PLANETS DURING NEPTUNE SCATTERING [PDF]

, 2010
Alex H. Parker, J. J. Kavelaars
openalex   +1 more source