Abstract A magnetoelectric material is capable of converting a magnetic field into electricity. Wireless energy harvesting, drug delivery via remote action, multiple state memories are just some of the possible applications of this phenomenon. The magnetoelectric property is however rare and restricted either to certain hard exotic crystals that satisfy a stringent set of material symmetry constraints or painstakingly fabricated (still hard) composites. Soft materials that are capable of large deformations and are also magnetoelectric, do not exist. In this work, based on a simple mechanism predicated on a coupling facilitated by the universal electromagnetic Maxwell stress, deformability of soft matter and the embedding and stabilization of external charges, we experimentally demonstrate the transformation of silicone rubber into hitherto softest magnetoelectric material. Our material exhibits a room-temperature magnetoelectric coefficient as high as 193 m V c m - 1 O e - 1 at the magnetic field of ≈ 600 O e and the low frequency of ≈ 1 H z . This rivals the performance of some of the best single phase and composite materials but with a capability of significant deformation.

中文翻译：

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作为磁电材料的软橡胶——通过磁场的远程作用发电

摘要 磁电材料能够将磁场转化为电能。无线能量收集、通过远程操作进行药物输送、多状态记忆只是这种现象的一些可能应用。然而，磁电特性是罕见的，并且仅限于满足一组严格的材料对称约束的某些坚硬的奇异晶体或精心制造的（仍然是硬的）复合材料。不存在能够发生大变形并且也是磁电的软材料。在这项工作中，基于一个简单的机制，该机制基于通用电磁麦克斯韦应力、软物质的可变形性以及外部电荷的嵌入和稳定促进的耦合，我们通过实验证明了硅橡胶向迄今为止最软的磁电材料的转变。我们的材料在 ≈ 600 O e 的磁场和 ≈ 1 Hz 的低频下表现出高达 193 m V cm - 1 O e - 1 的室温磁电系数。这与一些最好的单相和复合材料的性能相媲美，但具有显着变形的能力。