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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：光电工程与仪器科学学院院长、党委副书记
其他任职：辽宁省先进光电子技术重点实验室副主任，大连市新型功能材料与光电子器件重点实验室主任，中国超材料学会理事，中国机械工程学会极端制造分委员会委员，国际先进材料学会会士，Microsystems&Nanoengineering、chemosensors等期刊副编辑
性别：男
毕业院校：布里斯托尔大学
学位：博士
所在单位：光电工程与仪器科学学院
学科：光学工程. 电磁场与微波技术. 光学. 测试计量技术及仪器. 精密仪器及机械
办公地点：研教楼706
联系方式：0411-84706156
电子邮箱：caotun1806@dlut.edu.cn
Optical trapping using double negative index fishnet metamaterial
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论文类型：会议论文
发表时间：2012-10-08
收录刊物：EI、CPCI-S、Scopus
关键字：circular dichroism; metamaterial; chiral
摘要：We calculate the optical force exerted on the nanoparticle close proximity to the surface of fishnet metamaterials penetrating through metal/dielectric/metal films when irradiated at near infrared wavelength. These forces show the resonant frequencies similar to the magnetic resonant frequencies in the double negative index fishnet metamaterial. We also present that the optical force can be enhanced by optimizing the geometry of the fishnet to provide a stronger magnetic resonant dipole. In contrast to the other plasmonic nanostructure always obtaining trapping force using electrical resonant dipole, our presented structure utilizes the magnetic resonance to provide a gradient force, which is suitable for the optical trapping of the nanoscale particles at illumination intensities of just 1mW/mu m(2), the optical force is sufficient to overcome the Earth's gravitational pull.