Microwave resonant absorption of viruses through dipolar coupling with confined acoustic vibrations
Microwave resonant absorption of viruses through dipolar coupling with confined acoustic vibrations
复制标题
DOI：
10.1063/1.3074371
复制
发表时间：
2009-01-26
影响因子：
4
通讯作者：
Sun, Chi-Kuang
中科院分区：
文献类型：
--
作者：
Liu, Tzu-Ming;Chen, Hung-Ping;Sun, Chi-Kuang
在这封信中，与双电层的球形病毒的表面上，我们证实，微波共振吸收（MRA）的病毒的机制之一是通过偶极耦合与有限的声学振动。通过将球形病毒粒子视为自由均匀的纳米粒子，我们发现MRA频率与弹性连续介质理论预测的l=1偶极模式的频率吻合得很好。MRA的大小也被发现改变与病毒粒子表面上的吸附电荷的量。我们的研究结果提供了一种方法来观察生物系统中的三维受限声振动。
In this letter, with an electric double layer on the surface of spherical viruses, we confirm that one of the microwave resonant absorption (MRA) mechanisms of viruses is through dipolar coupling with confined acoustic vibrations. By treating spherical virions as free homogeneous nanoparticles, we found that the MRA frequencies agree well with that of l=1 dipolar modes predicted by the elastic continuum theory. The magnitude of MRA was also found to change with the amount of adsorbed charges on the surface of virions. Our results provide a method to observe three-dimensionally confined acoustic vibrations in biological systems.