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To detach a permanent magnet with a controlled force much smaller than its original attractive force, the Internally-Balanced Magnetic Unit (IB Magnet) was invented and has been applied to magnetic devices such as wall-climbing robots,…

Robotics · Computer Science 2019-12-04 Tori Shimizu , Kenjiro Tadakuma , Masahiro Watanabe , Eri Takane , Masashi Konyo , Satoshi Tadokoro

The ability to convert reciprocating, i.e., alternating, actuation into rotary motion using linkages is hindered fundamentally by their poor torque transmission capability around kinematic singularity configurations. Here, we harness the…

Robotics · Computer Science 2022-12-27 Gregor J. van den Doel , Just L. Herder , Davood Farhadi

This work is devoted to an impedance grasping strategy for a class of standard mechanical systems in the port-Hamiltonian framework. We embed a variable rest-length of the springs of the existing impedance grasping strategy in order to…

Robotics · Computer Science 2020-08-06 Mauricio Munoz-Arias , Jacquelien Scherpen , Alessandro Macchelli

We present an analytical and experimental study of torsional magnetic mechanism where the restoring torque is due to magnetic field interactions between rotating and fixed permanent magnets. The oscillator consists of a ball…

Signal Processing · Electrical Eng. & Systems 2022-06-15 Ali Kanj , Rhinithaa P. Thanalakshme , Chengzhang Li , John Kulikowski , Gaurav Bahl , Sameh Tawfick

In this work, we discuss the realization of mechanical devices with non-reciprocal attributes enabled by inertia-amplifying, time-modulated mechanisms. Our fundamental building-block features a mass, connected to a fixed ground through a…

Classical Physics · Physics 2024-01-17 Paolo Celli , Antonio Palermo

A new contribution to friction is predicted to occur in systems with magnetic correlations: Tangential relative motion of two Ising spin systems pumps energy into the magnetic degrees of freedom. This leads to a friction force proportional…

Statistical Mechanics · Physics 2009-11-13 Dirk Kadau , Alfred Hucht , Dietrich E. Wolf

Recently, a novel magnetic levitation phenomenon involving two magnetically equivalent neodymium permanent magnets has been reported. In this work, we propose that this system functions as a scaled-up analog of the Levitron. The key…

Applied Physics · Physics 2025-10-31 A. Doff , R. M. Szmoski

Designs for magnetic springs of two types have been proposed, and the methods of calculation of their retracting forces have been developed. Formulas are obtained for the retracting force in the main section of spring force characteristics.…

Instrumentation and Detectors · Physics 2014-10-31 V. Tsivilitsin , Yu. Milman , V. Goncharuk , I. Bondar

The paper establishes a methodology to overcome the difficulty of dynamic frame alignment and system separation in impedance modeling of ac grids, and thereby enables impedance-based whole-system modeling of generator-converter composite…

Systems and Control · Electrical Eng. & Systems 2020-06-23 Yunjie Gu , Yitong Li , Yue Zhu , Tim Green

Extreme deformation can drastically morph a structure from one structural form into another. Programming such deformation properties into the structure is often challenging and in many cases an impossible task. The morphed forms do not hold…

Graphics · Computer Science 2018-04-20 Gaurav Bharaj , Danny Kaufman , Etienne Vouga , Hanspeter Pfister

Here we present a new perspective to the breakdown of ferromagnetic order in two-dimensional spin-lattice models employing the rotation of the underlying lattice. Using an Ising spin system on a square lattice as a prototype, we demonstrate…

Statistical Mechanics · Physics 2021-08-17 Claudio J DaSilva , L. S. Ferreira , A. A. Caparica

Recently experimental techniques, such as magnetic force microscopy (MFM), have enabled the magnetic state of individual sub-micron particles to be resolved. Motivated by these experimental developments, we use Monte Carlo simulations of…

Condensed Matter · Physics 2009-10-28 Howard L. Richards , Scott W. Sides , Mark A. Novotny , Per Arne Rikvold

Non-equilibrium spin-chain systems have been attracting increasing interest in energy transport. This work studies a one-dimensional non-equilibrium Ising chain immersed in a tilted magnetic field, every spin contacts a Boson reservoir with…

Quantum Physics · Physics 2025-05-21 Yi-jia Yang , Yu-qiang Liu , Zheng Liu , Chang-shui Yu

In this communication we report the existence of a dynamic ``spin-reversal'' transition in an Ising system perturbed by a pulsed external magnetic field. The transition is achieved by tuning the strength ($h_p$) and/or the duration ($\Delta…

Condensed Matter · Physics 2015-06-25 A. Misra , B. K. Chakrabarti

We introduce a minimalistic quantum motor for coupled energy and particle transport. The system is composed of two spins, each coupled to a different bath and to a particle which can move on a ring consisting of three sites. We show that…

Statistical Mechanics · Physics 2017-07-04 Ulf Bissbort , Colin Teo , Chu Guo , Giulio Casati , Giuliano Benenti , Dario Poletti

Unmanned micro aerial vehicle research is an active area of development due to the vast potential applications. Prior work towards realizing flapping flight has achieved some success however they have relied heavily upon the use of rotary…

Applied Physics · Physics 2019-03-19 Jason Paul , Alex Fisher , Sridhar Ravi

Springs are efficient in storing and returning elastic potential energy but are unable to hold the energy they store in the absence of an external load. Lockable springs use clutches to hold elastic potential energy in the absence of an…

Robotics · Computer Science 2023-02-23 Sung Y. Kim , David J. Braun

We review recent advances in machine learning (ML) force-field methods for Landau-Lifshitz-Gilbert (LLG) simulations of itinerant electron magnets, focusing on scalability and transferability. Built on the principle of locality, a deep…

Strongly Correlated Electrons · Physics 2026-02-23 Gia-Wei Chern , Yunhao Fan , Sheng Zhang , Puhan Zhang

In magnetic systems with dominating easy-plane anisotropy the magnetization can be described by an effective one dimensional equation for the in-plane angle. Re-deriving this equation in the presence of spin-transfer torques, we obtain a…

Materials Science · Physics 2009-06-24 Ya. B. Bazaliy

A Brownian particle performs gyrating motion around a potential energy minimum when subjected to thermal noises from two different heat baths. Here, we propose a magneto-gyrator made of a single charged Brownian particle that is steered by…

Statistical Mechanics · Physics 2021-10-12 Iman Abdoli , René Wittmann , Joseph Michael Brader , Jens-Uwe Sommer , Hartmut Löwen , Abhinav Sharma
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