Results 81 to 90 of about 122,675 (338)

Bioinspired Adaptive Leg‐Claw Enables Robust Perching and Grasping for UAVs

Advanced Science, EarlyView.
Inspired by owl limb morphology and bat roosting behavior, this study presents a bioinspired adaptive leg‐claw mechanism that enables UAVs to perform robust and versatile perching and grasping. The design integrates a four‐link tibial structure, tension‐driven deformable feet, and active control, enabling stable perching on various branches and ...
Tianyu Cheng, Shaokun Wang, Jiehan Zou, Guiwen Shi, Zhongxue Gan, I‐Ming Chen, Guo‐Niu Zhu   +6 more
wiley   +1 more source

Evidence for a Nonzero Eccentricity Superpuff Exoplanet WASP-107 b Using JWST Occultation Observation

The Astrophysical Journal Letters
WASP-107 b is an extremely low-density superpuff exoplanet whose inflated radius and evidence of strong internal heating make it a key target for understanding planetary structure and evolution.
Yunke Wu, Zixin Zhang, Xinyue Ma, Zhangliang Chen, Wenqin Wang, Shangfei Liu, Cong Yu, Dichang Chen, Bo Ma   +8 more
doaj   +1 more source

Is There a Planet in the PSR 1620-26 Triple System?

, 1994
The unusually large eccentricity ($e_1=0.025$) of the low-mass binary millisecond pulsar PSR B1620-26 can be explained naturally as arising from the secular perturbation of a second, more distant companion.
Rasio, F. A.
core   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

Advanced Science, EarlyView.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Eccentricity Parameters Identification for a Motorized Spindle System Based on Improved Maximum Likelihood Method

Shock and Vibration, 2020
As a kind of rotor system, the electric spindle system is the core component of the precision grinding machine. The vibration caused by the mass imbalance is the main factor that causes the vibration of the grinding machine.
Wengui Mao, Chaoliang Hu, Jianhua Li, Zhonghua Huang, Guiping Liu   +4 more
doaj   +1 more source

Resonant Excitation of Planetary Eccentricity due to a Dispersing Eccentric Protoplanetary Disk: A New Mechanism of Generating Large Planetary Eccentricities [PDF]

, 2022
Jiaru Li, Dong Lai
openalex   +1 more source

On the evolution of eccentric and inclined protoplanets embedded in protoplanetary disks

, 2007
Young planets embedded in their protoplanetary disk interact gravitationally with it leading to energy and angular momentum exchange. This interaction determines the evolution of the planet through changes to the orbital parameters.
Artymowicz, Bate, Bryden, Bryden, Cresswell, D'Angelo, D'Angelo, D'Angelo, de Val-Borro, G. Dirksen, Goldreich, Goldreich, Kley, Kley, Kley, Kley, Lubow, Marcy, Masset, Masset, Nelson, Nelson, Nelson, P. Cresswell, Paardekooper, Papaloizou, Papaloizou, Papaloizou, R. P. Nelson, Sari, Schäfer, Tanaka, Tanaka, van Leer, W. Kley, Ward, Ward, Ward, Ziegler   +38 more
core   +1 more source

Machine Learning for Designing Perovskites and Perovskite‐Inspired Solar Materials: Emerging Opportunities and Challenges

Advanced Science, EarlyView.
This review offers a comprehensive comparison between perovskites and perovskite‐inspired materials (PIMs), focusing on their crystal structures, electronic properties, and chemical compositions. It evaluates the applicability of machine learning (ML) descriptors and models across both material classes.
Yangfan Zhang, Yiming Xia, Ali Shakiba, Hongrui Zhang, Xiaojing Hao, Priyank V. Kumar, Mahesh P. Suryawanshi   +6 more
wiley   +1 more source

Ion‐Lock Storage With Multi‐Logic Circuitry Gated by Polar–Dipolar Interactions in Poly(Ionic Liquids)

Angewandte Chemie, EarlyView.
Precise building block design of poly(ionic liquids) creates an opportunity to achieve ionic conductivity, energy storage, and multi‐value logic in one material while eliminating elaborate fabrication processes. ABSTRACT In these studies, we developed a new generation of polymeric materials capable of electrical energy storage and forming higher‐than ...
Sourav Biswas, Jiahui Liu, Jack Austin, Marek W. Urban   +3 more
wiley   +2 more sources

Chaos in the Test Particle Eccentric Kozai-Lidov Mechanism

, 2014
The Kozai-Lidov mechanism can be applied to a vast variety of astrophysical systems involving hierarchical three-body systems. Here, we study the Kozai-Lidov mechanism systematically in the test particle limit at the octupole level of approximation.
Holman, Matt, Li, Gongjie, Loeb, Abraham, Naoz, Smadar   +3 more
core   +1 more source