文献类型：期刊文献

英文题名：Electromagnetically driven, environmentally adaptive, and functionally switchable hydrodynamic devices

作者：Wu, Chen-Long[1]; Wang, Bin[1]; Wang, Hao[1]; Yao, Neng-Zhi[1]; Xu, Liujun[2]; Wang, Xuesheng[1]; Huang, Jiping[3]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Graduate School of China Academy of Engineering Physics, Beijing, 100193, China; [3] Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory of Micro and Nano Photonic Structures [MOE], Fudan University, Shanghai, 200438, China

年份：2025

外文期刊名：arXiv

收录：EI(收录号：20250438295)

语种：英文

外文关键词：Electromagnetic field theory - Electromagnetic shielding - Fluids - Integral equations - Metamaterials

摘要：Metamaterials provide exceptional control over physical phenomena, enabling many disruptive technologies. However, researches in hydrodynamic meta-devices have mainly used intrusive methods to manipulate material structures, limited by material properties and specific environmental conditions. Each design serves a single function, reducing versatility. This study introduces a meta-hydrodynamics theory using applied force fields to avoid physical contact with the fluid and eliminate the need for inhomogeneous and anisotropic metamaterials, allowing continuous switching between cloaking, shielding, and Venturi amplification. The force field operates independently of the fluid’s physical properties, making it adaptable to various fluids and environmental conditions. We derive volumetric force distributions for hydrodynamic devices based on fluid properties and forces equivalence, using the integral median theorem to homogenize these forces for practical applications. The effectiveness of the proposed hydrodynamic devices is validated through numerical simulations and quantitative analyses. By utilizing the electromagnetic forces produced by the interaction between a conducting fluid and an electromagnetic field, we experimentally verified the validity of our theoretical simulations. Our research offers different insights into hydrodynamic meta-devices design, enhancing practical applications and opening avenues for innovative flow manipulation. Copyright ? 2025, The Authors. All rights reserved.