连续体中的束状态在结构障碍的合Mie共振器链中:理论和实验
Ravshanjon Nazarov1,2, Denis Khanabiev2, Elizaveta Chernysheva2
1Qingdao Innovation and Development Center of Harbin Engineering University, Qingdao, 266500, China.
Nanophotonics (Berlin, Germany)
|September 25, 2025
概括
结构性障碍导致连续 (BIC) 辐射质量因子中有限状态的线性衰变,与之前的二次衰变发现不同. 这影响了光子应用,其中混乱是关键.
科学领域:
- 光子学 是一个光子学.
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
背景情况:
- 连续体中的受限状态 (BICs) 是局部电磁状态,理论上具有无限寿命.
- 光子系统中的结构障碍可以显著改变光物相互作用的行为和特性.
- 了解障碍效应对于实现BIC在各种光子设备中的实际应用至关重要.
研究的目的:
- 调查结构障碍对对称性保护BIC和明亮模式辐射寿命的影响.
- 探索障碍振幅与BICs的辐射质量因子之间的关系.
- 分析模式对称性和多极起源如何影响无序系统中的质量因子行为.
主要方法:
- 结合的 Mie 振荡机链的实验制造和表征.
- 数字模拟用于模拟光传播和共振器行为.
- 理论分析来推导质量因子对混乱的依赖.
主要成果:
- 观察到BIC辐射质量因子的异常线性衰变,随着障碍幅度的增加.
- 证明了无序系统中的质量因素行为取决于模式的多极起源和对称性.
- 在无序的有限链中确定了控制法布里-佩罗特模式的带内相互作用.
- 在无序的光子结构中分析了安德森定位的出现.
结论:
- 结构性障碍显著影响BIC辐射寿命,表现出线性衰变,与之前报告的二次依赖不同.
- 模式的多极起源和对称性决定了它们对光子系统中混乱的反应.
- 这些发现对于设计和实施光子设备至关重要,特别是在自然或自组装结构中,其中混乱是固有的.
相关概念视频
The de Broglie Wavelength
33.0K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
33.0K
Resonance and Hybrid Structures
25.2K
According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
25.2K
Atomic Nuclei: Nuclear Relaxation Processes
1.2K
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis.
1.2K
Standing Waves in a Cavity
1.4K
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
1.4K
¹H NMR: Long-Range Coupling
2.6K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
2.6K
¹H NMR: Interpreting Distorted and Overlapping Signals
1.5K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.5K


