Results 81 to 90 of about 319,875 (285)

Carbonaceous dust processing in the merger galaxy II Zw 096: High-resolution polycyclic aromatic hydrocarbon diagnostics with JWST

Astronomy & Astrophysics
Context. Galaxy mergers drive intense radiation environments that fundamentally alter interstellar dust properties through photo-destruction and thermal processing.
Olander Gustav, Schirmer Thiebaut, Aalto Susanne, del Palacio Santiago, Diaz-Santos Tanio, Inami Hanae, Armus Lee, Buiten Victorine, Knudsen Kirsten K., König Sabine, Lai Thomas S.-Y., Lenkic Laura, Linden Sean T., Nyman Gunnar, Riesco Clemente, van der Werf Paul, Vlemmings Wouter, Sameera W. M. C., Wethers Clare   +18 more
doaj   +1 more source

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, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

TEM observation of void-like defect structures in matrix-and isolated-olivine grains in Allende (CV3) [PDF]

, 1997
P(論文)Olivine grains in the Allende CV3 carbonaceous chondrite matrix were examined mainly by TEM. Compositional data of olivine by EPMA are also given.
Tanaka,Hidenobu, Akai,Junji
core   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

A First Taste of MEAD (Measuring Extinction and Abundances of Dust). I. Diffuse Milky Way Interstellar Dust Extinction Features in JWST Infrared Spectra

The Astronomical Journal
We present the initial results of the Measuring Extinction and Abundances of Dust project, with a focus on the dust extinction features observed in our JWST near- and mid-infrared spectra of nine diffuse Milky Way sightlines (1.2 ≤ A ( V ) ≤ 2.5).
Marjorie Decleir, Karl D. Gordon, Karl A. Misselt, Burcu Günay, Julia Roman-Duval, Sascha T. Zeegers   +5 more
doaj   +1 more source

An Examination of Two Atypical Carbonaceous Chondrites

Carbonaceous chondrites are meteorites that represent ancient Solar System material, and are classified into groups separating different parent bodies.
Morrelli, Nico, Hutson, Melinda
core   +1 more source

Ionic Precursors Transformed Into Vinyl Acetate Synthesis Catalyst via Reaction‐Driven Restructuring

Advanced Functional Materials, EarlyView.
This work demonstrates that a simple physical mixture of Pd and Au ionic precursors, KOAc promoter, and SiO2 support can transform into a highly active vinyl acetate synthesis catalyst through reaction‐driven restructuring. The results highlight reaction‐induced restructuring as an innovative and sustainable catalyst design strategy.
Byeong Jun Cha, Welman C. Elias, Hunter P. Jacobs, Kimberly N. Heck, Saghar Rezaie, Sadegh Yazdi, Kiheon Hong, Justin J. Dodson, Laiyuan Chen, Sean G. Mueller, Steven R. Alexander, Michael S. Wong   +11 more
wiley   +1 more source

Experimental demonstration of formation of iron-sulfide grains withFe-S coalescence technique and iron-sulfide grains in carbonaceouschondrite [PDF]

, 1992
P(論文)The coalescence growth process of a joint cloud of fine smoke particles evaporated from Fe and those from S produces fine grains of pyrrhotite, in addition to stoichiometric troilite and marcasite.
Kaito, Chihiro, Nagata, Takesi
core   +1 more source

Multimodal Optoelectronic Synapses for Neuromorphic Intelligence: Coupling Light, Electrical, Thermal, and Beyond

Advanced Functional Materials, EarlyView.
This review revisits optoelectronic neuromorphic devices that extend from unimodal sensing toward multimodal perception. Five types of stimuli‐to‐output information flow that are classified based on the device roles within the system and applications are summarized and discussed.
Jihyun Shin, Junhyung Cho, Wangmyung Choi, Jaehyun Hur, Jae Kyeong Jeong, Ulrike Kraft, Hocheon Yoo   +6 more
wiley   +1 more source

Presolar O- and C-anomalous grains in unequilibrated ordinary chondrite matrices

, 2022
Presolar grains are trace components in chondrite matrices. Their abundances and compositions have been systematically studied in carbonaceous chondrites but rarely in situ in other major chondrite classes.
Wang, Jianhua, Brearley, Adrian J., Dobrică, Elena, Barosch, Jens, Nittler, Larry, Hezel, Dominik C., Alexander, Conel M. O'D.   +6 more
core   +1 more source