Results 161 to 170 of about 22,321,491 (359)

Closed‐Loop and Sustainable 4D Printing of Multi‐Stimuli‐Responsive Sulfur‐Rich Polymer Composites for Autonomous Task Execution

open access: yesAdvanced Materials, EarlyView.
Closed‐loop and sustainable 4D printing of sulfur‐rich polymer composites is demonstrated for the first time using loosely crosslinked poly(phenylene polysulfide) networks (PSNs) and their magnetic composites (MPSNs). 3D‐printed PSNs and MPSNs exhibit shape‐morphing capabilities and can be directly reprinted into new form factors and magneto‐responsive
Jae Hyuk Hwang   +10 more
wiley   +1 more source

Nongravitational Forces in Planetary Systems

open access: yesThe Planetary Science Journal
Nongravitational forces play surprising and, sometimes, centrally important roles in shaping the motions and properties of small planetary bodies. In the solar system, the morphologies of comets, the delivery of meteorites, and the shapes and dynamics of
David Jewitt
doaj   +1 more source

All‐3D‐Printed Multi‐Environment Modular Microrobots Powered by Large‐Displacement Dielectric Elastomer Microactuators

open access: yesAdvanced Materials, EarlyView.
Fully 3D‐printed modular microrobots capable of performing a broad range of tasks across diverse environments are demonstrated. The key breakthrough lies in the development of a large‐displacement microactuator for multi‐environment navigation and a mesoscale multimaterial 3D printing platform for on‐demand module fabrication.
Won Jun Song   +12 more
wiley   +1 more source

Variations in the Radius Distribution of Single- and Compact Multiple-transiting Planets

open access: yesThe Astronomical Journal
Previous work has established the enhanced occurrence of compact systems of multiple small exoplanets around metal-poor stars. Understanding the origin of this effect in the planet formation process is a topic of ongoing research.
Benjamin T. Liberles   +3 more
doaj   +1 more source

Advancing Tomographic Volumetric Printing Via Oxygen Inhibition Control: Improved Accuracy and Large‐Volume Capability

open access: yesAdvanced Materials, EarlyView.
Oxygen inhibition limits the printable volume and resolution in tomographic volumetric additive manufacturing using (meth)acrylate photoresins. This study presents a simple yet strategic formulation design using additives that regenerate active radicals from peroxyl radicals.
Yujie Zhang   +10 more
wiley   +1 more source

Incipient continent formation by shallow melting of an altered mafic protocrust

open access: yesNature Communications
Understanding how Earth’s continental nuclei first formed in the Archean eon (4.0–2.5 Ga) underpins our notions of early Earth geodynamics. Yet, the nature of Earth’s early protocrust and the primary mechanism for its transformation are poorly understood,
Michael I. H. Hartnady   +8 more
doaj   +1 more source

Biological and Biologically Inspired Functional Nanostructures: Insights into Structural, Optical, Thermal, and Sensing Applications

open access: yesAdvanced Materials, EarlyView.
Biological and biologically‐inspired functional nanostructures with structural, thermal, optical, and sensing applications are reviewed. The role of nanoscale features in biological materials on performance is described, and their blueprints are used for bio‐inspired nanomaterials, synthesized using advanced techniques (i.e., photolithography, bio ...
Chao Hsuan (Joseph) Sung   +15 more
wiley   +1 more source

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