Results 111 to 120 of about 338,003 (249)

Geometry-driven wormholes in Barthel-Randers space-time under generalized Rastall framework

Nuclear Physics B
This work focuses on constructing and examining traversable wormhole solutions within the framework of generalized Rastall gravity combined with Finsler-Randers geometry.
Z. Nekouee, S.K. Narasimhamurthy, T. Sanjay, B.R. Yashwanth, Manjunath Malligawad   +4 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

Anisotropic behavior of universe in $$f(R, L_m)$$ f ( R , L m ) gravity with varying deceleration parameter

European Physical Journal C: Particles and Fields
In this research study, we investigate the anisotropic behavior of the Universe using the framework of $$f(R, L_m)$$ f ( R , L m ) gravity. This modified gravity theory, represented by $$f(R, L_m)=\frac{R}{2}+L^\alpha _m+\beta $$ f ( R , L m ) = R 2 + L ...
Jeevan Pawde, Rahul Mapari, Vasudeo Patil, Dnyaneshwar Pawar   +3 more
doaj   +1 more source

Ricci Semi-Symmetric Robertson–Walker Spacetime in f(R)-Gravity

Mathematics
We investigated the properties of Ricci semi-symmetric Robertson–Walker spacetimes within the framework of f(R)-gravity theory. Initially, we established that Ricci semi-symmetric Robertson–Walker spacetimes are locally isometric to either Minkowski or ...
H. Aruna Kumara, Abdul Haseeb, V. Venkatesha, Mohd Bilal   +3 more
doaj   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Wormhole thermodynamics in matter-geometry coupled theory: Implications of pseudo-isothermal profile and complexity factor

Nuclear Physics B
The objective of this article is to explore the existence of traversable wormholes possessing the pseudo-isothermal profile in modified f(R,T) gravity.
Tayyab Naseer, M. Sharif, Mona Faiza, Faisal Javed, Baiju Dayanandan, Khalifa Al Shaqsi   +5 more
doaj   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Study of stable dark energy stars in Hořava–Lifshitz gravity

European Physical Journal C: Particles and Fields
We study the structure and basic physical properties of non-rotating dark energy stars in Hořava–Lifshitz (HL) gravity. The interior of proposed stellar structure is made of isotropic matter obeys extended Chaplygin gas EoS.
Krishna Pada Das, Ujjal Debnath
doaj   +1 more source

Asymmetry in Skipping Enhances Viability Against Control Input Noise

Advanced Robotics Research, EarlyView.
Quadruped animals use asymmetric galloping gaits at high speeds, yet the functional role of this asymmetry remains unclear. This study shows that left–right asymmetry in touchdown angles enhances robustness to control noise. Using a simple two‐legged locomotion model and viability theory, it demonstrates that asymmetric skipping substantially enlarges ...
Yuichi Ambe, Alvin So, Shinya Aoi
wiley   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source