论文标题
通过纳米光结构的吸收和散射方便
Trade-offs in absorption and scattering by nanophotonic structures
论文作者
论文摘要
可行的吸收和限制为任意形状体积的障碍物的散射横截面之间的权衡是通过拉格朗日二偶方法解决的多目标优化问题。这种优化问题的解决方案产生了帕累托最佳集合，其形状揭示了同时实现极端吸收和散射的可行性。两种形式的权衡问题被认为涉及损失和反应性物质参数。进行了数值比较，进行了派生的多目标边界和几类已实现的结构。此外，在某些特殊情况下检查了低频（电小，长波长）限制。
Trade-offs between feasible absorption and scattering cross sections of obstacles confined to an arbitrarily shaped volume are formulated as a multi-objective optimization problem solvable by Lagrangian-dual methods. Solutions to this optimization problem yield a Pareto-optimal set, the shape of which reveals the feasibility of achieving simultaneously extremal absorption and scattering. Two forms of the trade-off problems are considered involving both loss and reactive material parameters. Numerical comparisons between the derived multi-objective bounds and several classes of realized structures are made. Additionally, low-frequency (electrically small, long wavelength) limits are examined for certain special cases.
