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We consider a 2d permanent magnet synchronous machine operating in a sequence of static operating points coming from a drive cycle. We aim to find a rotor design which maximizes the efficiency defined as the quotient of input and output…

Optimization and Control · Mathematics 2026-04-01 Nepomuk Krenn , Théodore Cherrière , Sebastian Schöps , Peter Gangl

We study the best M\"obius approximations (BMA) to convex and concave conformal mappings of the disk, including the special case of mappings onto convex polygons. The crucial factor is the location of the poles of the BMAs. Finer details…

Complex Variables · Mathematics 2023-08-09 Martin Chuaqui , Brad Osgood

The generation of localized magnetic field gradients by on-chip nanomagnets is important for a variety of technological applications, in particular for spin qubits. To advance beyond the empirical design of these nanomagnets, we propose a…

Mesoscale and Nanoscale Physics · Physics 2024-04-10 William Legrand , Sandrine Lopes , Quentin Schaeverbeke , François Montaigne , Matthieu M. Desjardins

Three-dimensional (3D) magnetic nanostructures offer unprecedented opportunities for engineering emergent spin textures, but controlling their configuration remains a central challenge. Here we show that conformally coated Ni Nanotubes…

Mesoscale and Nanoscale Physics · Physics 2025-12-16 Alexander Roberts , Huixin Guo , Joseph Askey , Vani Lanka , Arjen van den Berg , Dirk Grundler , Sam Ladak

High-Power Impulse Magnetron Sputtering (HiPIMS) offers higher ionized flux fractions at the cost of lower deposition rates compared to conventional DCMS. A fine optimization of the deposition conditions is crucial for specific…

Plasma Physics · Physics 2025-10-08 Mina Farahani , Jiří Čapek , Tomáš Kozák

In this paper, stress-constrained topology optimization is applied to the design of compliant displacement magnification mechanisms. By formulating the objective function based on the concept of effective energy, it is not necessary to…

Computational Engineering, Finance, and Science · Computer Science 2023-01-19 Ken Miyajima , Yuki Noguchi , Takayuki Yamada

We consider the problem of spatial signal design for multipath-assisted mmWave positioning under limited prior knowledge on the user's location and clock bias. We propose an optimal robust design and, based on the low-dimensional precoder…

Signal Processing · Electrical Eng. & Systems 2022-02-09 Musa Furkan Keskin , Fan Jiang , Florent Munier , Gonzalo Seco-Granados , Henk Wymeersch

For the injector Scheme-I test stand of the China-ADS, a beam with the maximum power of 100 kW will be produced and transported to the beam dump. At the beam dump, the beam power will be converted to thermal load and brought away by the…

Accelerator Physics · Physics 2015-06-19 Zheng Yang , Jing-Yu Tang , Fang Yan , Shi-Lun Pei , Yuan Chen , Zhi-hui Li , Hui-Ping Geng

A wealth of literature exists on computing and visualizing cuts for the magnetic scalar potential of a current carrying conductor via Finite Element Methods (FEM) and harmonic maps to the circle. By a cut we refer to an orientable surface…

Computational Physics · Physics 2019-06-19 Alex Stockrahm , Valtteri Lahtinen , Jari J. J. Kangas , P. Robert Kotiuga

Surface tension and contact angle measurements are fundamental characterization techniques relevant to thermal and fluidic applications. Drop shape analysis techniques for the measurement of interfacial tension are powerful, versatile and…

Fluid Dynamics · Physics 2019-09-16 Karan Jakhar , Ashesh Chattopadhyay , Atul Thakur , Rishi Raj

Constellation shaping is an energy-efficient strategy involving the transmission of lower-energy signals more frequently than higher-energy signals. Previous work has shown that shaping is particularly effective when used with coded…

Information Theory · Computer Science 2012-10-18 Xingyu Xiang , Matthew C. Valenti

This paper considers the problem of designing sparse linear tripole arrays. In such arrays at each antenna location there are three orthogonal dipoles, allowing full measurement of both the horizontal and vertical components of the received…

Information Theory · Computer Science 2017-02-15 Matthew Hawes , Wei Liu , Lyudmila Mihaylova

Permanent magnet-assisted synchronous reluctance motors (PMSynRM) have a significantly higher average torque than synchronous reluctance motors. Thus, determining an optimal design results in a multi-material topology optimization problem,…

Optimization and Control · Mathematics 2026-04-01 Thomas Gauthey , Peter Gangl , Maya Hage Hassan

This letter aims at resolving the issues raised in the recent short communication [1] and answered by [2] by proposing a systematic approximation scheme based on non-mapped shape functions, which both allows to fully exploit the unique…

Numerical Analysis · Computer Science 2011-07-20 Stephane PA Bordas , Sundararajan Natarajan

We introduce a general method for designing tailored lattices of magnetic microtraps for ultracold atoms, on the basis of patterned permanently magnetized films. A fast numerical algorithm is used to automatically generate patterns which…

Quantum Physics · Physics 2010-10-19 Roman Schmied , Dietrich Leibfried , Robert J. C. Spreeuw , Shannon Whitlock

In this paper, we develop a rigorous mathematical framework for the optimization of hip roof house geometry, with the primary goal of minimizing the external surface of the building envelope for a given set of design constraints. Five…

Optimization and Control · Mathematics 2026-01-21 Ewa Rokita-Magdziarz , Barbara Gronostajska , Marcin Magdziarz

This paper proposes a self-support topology optimization method that considers distortion to improve the manufacturability of additive manufacturing. First, a self-support constraint is proposed that combines an overhang angle constraint…

Computational Engineering, Finance, and Science · Computer Science 2022-12-15 Takao Miki

Thermal and magnetic effects in a system consisting of thin layers of coupled Ising spins with $S=1/2$ and $S=1$ are considered. The specific heat and the correlation length display maxima at two different temperatures. It is discussed in…

Statistical Mechanics · Physics 2016-08-31 Dragi Karevski , Malte Henkel

Americium ($^{241}$Am) with an unpaired proton in the F$_{5/2}$ state exhibits a significant magnetic dipole moment. The dipole can be experimentally measured with application of even modest external magnetic fields, as little as 1G, as a…

Nuclear Experiment · Physics 2025-05-05 C. Scarlett , E. Fischbach , B. Freeman , J. J. Coy , P. Edwards , D. Osborne , J. Edwards , L. Mwibanda , A. Alsayegh

Several algorithms for the construction of orthogonal drawings of graphs, including those based on the Topology-Shape-Metrics (TSM) paradigm, tend to prioritize the minimization of crossings. This emphasis has two notable side effects: some…

Computational Geometry · Computer Science 2025-08-28 Giordano Andreola , Susanna Caroppo , Giuseppe Di Battista , Fabrizio Grosso , Maurizio Patrignani , Allegra Strippoli