Results 101 to 110 of about 32,755 (312)

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

A Paleoarchaean impact crater in the Pilbara Craton, Western Australia

Nature Communications
The role of meteorite impacts in the origin, modification, and destruction of crust during the first two billion years of Earth history (4.5–2.5 billion years ago; Ga) is disputed.
Christopher L. Kirkland, Tim E. Johnson, Jonas Kaempf, Bruno V. Ribeiro, Andreas Zametzer, R. Hugh Smithies, Brad McDonald   +6 more
doaj   +1 more source

Solar System planetary orbital motions andf(R) theories of gravity [PDF]

, 2007
Matteo Luca Ruggiero, Lorenzo Iorio
openalex   +1 more source

Elimination of Necking and Aspect Ratio Dependence in Uniaxial Actuators by Continuous Fiber Reinforcement

Advanced Robotics Research, EarlyView.
A novel carbon fiber reinforcement for dielectric elastomer actuators enhances actuation force while decoupling electromechanical performance from the actuator's aspect ratio. Unlike conventional fiber reinforcements, it enables a uniform planar stretch state along the entire actuator.
Markus Koenigsdorff, Stefania Konstantinidi, Anett Endesfelder, Petr Osipov, Johannes Mersch, E.‐F. Markus Vorrath, Martina Zimmermann, Yves Perriard, Gerald Gerlach   +8 more
wiley   +1 more source

Editorial: Interplanetary medium variability as observed in the new era of spacecraft missions

Frontiers in Astronomy and Space Sciences, 2022
Tommaso Alberti, Lina Z. Hadid, Valeria Mangano, Beatriz Sanchez-Cano   +3 more
doaj   +1 more source

An exogenic to endogenic thermal transition on Earth 3.9 billion years ago

Communications Earth & Environment
On Earth, the primary driver of crustal magmatism is generally viewed as endogenic, a manifestation of loss of primordial and radiogenic heat from the interior.
Christopher L. Kirkland, Janne Liebmann, Hamed Gamaleldien, Hugo K. H. Olierook, Maximilian Dröllner, Tim Johnson, Craig O’Neill, Axel K. Schmitt   +7 more
doaj   +1 more source

Nitrogen Cycling in Earth System Models: From Constraining Carbon Budgets to Projecting Pollution for Planetary Stewardship [PDF]

Sian Kou‐Giesbrecht
openalex   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Enhanced Stability in Planetary Systems with Similar Masses

The Astronomical Journal
This study employs numerical simulations to explore the relationship between the dynamical instability of planetary systems and the uniformity of planetary masses within the system, quantified by the Gini index.
Dong-Hong Wu, Sheng Jin, Jason H. Steffen   +2 more
doaj   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

Advanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang, Zixuan Zhang, Bingyan Li, Junkai Wang, Hongcheng Gu   +4 more
wiley   +1 more source