Extreme effects in field localization of acoustic wave: super-resonances in dielectric mesoscale sphere immersed in water

3rd International Conference "Cognitive Robotics"

计算机科学

Minin, I.V.^1^2 ; Minin, O.V.^1

Tomsk Polytechnical University, Tomsk, Russia^1

Siberian Institute of Metrology, Novosibirsk, Russia^2

关键词: Field intensity;    In-field;    Mesoscale;    Particle materials;    Resonance mode;    Specific values;    Wavebands;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/516/1/012042/pdf
DOI  :  10.1088/1757-899X/516/1/012042

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

By the numerical simulation we predict acoustic super-resonance modes with several tens of thousands of times field-intensity enhancement (order of magnitude: 104 - 105) supported by dielectric mesoscale spheres immersed in water. The super-resonances are related to internal scattering at specific values of the Mie and the particle material parameters and they are responsible for generation of giant fields within the particles near its surface. Taking into account the analogy between electromagnetic and acoustic waves this phenomenon is valid in electromagnetic (optical) waveband.