各向异性粒子的通用框架：共振定律与分裂
Universal framework for anisotropic particles with resonance laws and splitting
AI总结：
本文提出一个通用全波框架，用于分析各向异性纳米颗粒的本征模和共振特性，揭示轴向介电常数求和规则和各向异性诱导的对称性破缺，通过椭球体扩展实现多波段响应的几何调制，验证了理论的正确性。
摘要：
纳米光子学使人们能够精确控制光-物质相互作用，尽管大多数已建立的用于亚波长纳米颗粒的设计框架依赖于各向同性材料。单轴和双轴粒子——在自然和工程系统中都很常见——引入了耦合几何和材料性质的新自由度，解锁了在之前未探索的光谱区域中的多波段和方向响应。我们提出了一个通用的全波框架，用于此类纳米颗粒的本征模和共振。闭式解揭示了轴向介电常数求和规则和各向异性诱导的对称性破缺，产生共振分裂和新的辐射模式。推广到椭球体可实现多波段响应的几何调制，而解析质量因子阐明了模式局域性和损耗。对h-BN和α-MoO3粒子的全波模拟验证了理论。该框架统一了光学、磁学和热传导中各向异性纳米结构的理解，为具有可调多波段响应和受控发射的新一代光电设备开辟了道路，在传感和成像中有直接应用。
英文摘要：
Nanophotonics enables precise control over light-matter interactions, though most established design frameworks for subwavelength nanoparticles rely on isotropic materials. Uniaxial and biaxial particles -- common in natural and engineered systems -- introduce new degrees of freedom coupling geometry and material properties, unlocking multispectral and directional response in previously unexplored spectral regions. We present a universal full-wave framework for eigenmodes and resonances in such nanoparticles. Closed-form solutions reveal axial-permittivity sum rules and anisotropy-induced symmetry breaking, producing resonance splitting and novel radiation patterns. Generalizing to ellipsoids enables geometric tuning of multispectral response, while analytic quality factors elucidate mode localization and loss. Full-wave simulations of h-BN and $α$-MoO3 particles confirm the theory. This framework unifies the understanding of anisotropic nanostructures across optics, magnetism, and thermal transport, opening pathways to a new generation of photonic devices with tunable multispectral response and controlled emission with direct applications in sensing and imaging
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
