基于时间反演单点聚焦的电磁镊技术
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- 英文论文题名：Electromagnetic Tweezers Technique Realized by Single Spot Focusing of Time Reversal
- 论文作者：郭子珍 ; 赵德双
- 英文论文作者：Zizhen Guo ; Deshuang Zhao ; School of Physical Electronics ; University of Electronic Science and Technology of China
- 年：2017
- 作者机构：电子科技大学物理电子学院;
- 论文关键词：时间反演 ; 电磁镊 ; 梯度力 ; 散射力 ; 微粒捕获
- 英文论文关键词：electromagnetic tweezers ; time reversal ; gradient force ; scattering force ; particle trapping
- 会议召开时间：2017-05-08
- 会议录名称：2017年全国微波毫米波会议论文集（中册）
- 英文会议录名称：Proceedings of 2017 National Conference on Microwave and Millimeter Waves(NCMMW2017)
- 语种：中文
- 分类号：O441
- 学会代码：ZDWB
- 会议名称：2017年全国微波毫米波会议
- 会议地点：中国浙江杭州
- 主办单位：中国电子学会
- 学会名称：中国电子学会微波分会
- 页数：4
- 文件大小：1019k
- 原文格式：D
- 会议级别：全国
摘要
本文基于时间反演电磁波的空-时聚焦特性,提出了一种电磁镊及其实现方法。此方法利用探测天线,采用小功率正弦信号激励,将预期需要产生的高强度聚焦场的空间位置及其场分布信息,传递给由平面天线阵列构建的平面时间反演镜,经时间反演处理和功率放大后,由平面时间反演镜进行电磁辐射,然后在操纵平面内产生高强度聚焦场。运用经典电动力学的理论,分析了高强度聚焦场对半径1mm的聚苯乙烯小球的力学特性,其梯度力大于散射力且占据主导地位。在本文所述的条件下,其电磁梯度力的大小达到了p N量级,与光镊的梯度力大小相当,能将高折射率微粒(如聚苯乙烯)束缚于焦点,证明了本文提出的电磁镊具有捕获和操控微粒的能力。
Electromagnetic tweezers based on the space-time focusing feature of time reversal is proposed in this paper. The spatial location and intensity distribution information of the expected high intensity focused field is transmitted to the planar time reversal mirror through a probe antenna excited by a low power sine signal. After time reversal operation and power amplification, the time-reversed signals are retransmitted by the planar time reversal mirror and generate the high intensity focused field in the specified control surface. Based on the classical electrodynamics, the force of the high intensity focused field acting on a polystyrene particle with radius of 1mm is analyzed. The results show that the gradient force is dominant, which is beyond the scattering force. Under the study conditions in this paper, the EM gradient forces of the order of p N are achieved, almost equal to the gradient force of optical tweezers. This force can trap the polystyrene particles at the focus, demonstrating that the proposed electromagnetic tweezers has the capability of trapping and manipulating particles.
Electromagnetic tweezers based on the space-time focusing feature of time reversal is proposed in this paper. The spatial location and intensity distribution information of the expected high intensity focused field is transmitted to the planar time reversal mirror through a probe antenna excited by a low power sine signal. After time reversal operation and power amplification, the time-reversed signals are retransmitted by the planar time reversal mirror and generate the high intensity focused field in the specified control surface. Based on the classical electrodynamics, the force of the high intensity focused field acting on a polystyrene particle with radius of 1mm is analyzed. The results show that the gradient force is dominant, which is beyond the scattering force. Under the study conditions in this paper, the EM gradient forces of the order of p N are achieved, almost equal to the gradient force of optical tweezers. This force can trap the polystyrene particles at the focus, demonstrating that the proposed electromagnetic tweezers has the capability of trapping and manipulating particles.
引文
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6 Z.Zheng,B.F.Zhang,H.Chen,et al..Optical trapping with focused Airy beams[J].Appl Opt,2011,50(1):43-49.
7 G.M.Terriza,J.P.Torres,L.Torner.Twisted photons[J].Nature Phys,2007,3(5):305-310.
8 D.Zhao,M.Zhu,Generating microwave spatial fields with arbitr ary patterns,IEEE Antennas and Wireless Propagation Letters,2016,15:1739-1742.
9 D.Zhao,H.Sun,B.-Z.Wang,Focus movement control for time reversal focusing microwaves,ICMMT2016,Bingjing,P.R.China,June 5-8,2016[C].
10 D.Zhao,Shaping microwave field of arbitrary intensity patterns in bounded area by time reversal mirror,The 37th PIERS 2016,Shanghai,P.R.China,Aug.8-11,2016,pp.4428-4428[C].
11 赵德双,郭子珍,基于时间反演空时聚焦机制的双聚焦场电磁镊实现方法,申请号:201610802423.4,申请日:2016.09.05
12 赵德双,朱敏,杨昌兴,王秉中,一种基于时间反演电磁波传输的空间电磁场赋形产生方法,中国发明专利,申请号:201410440116.7,申请日:2014-08-29
13 N.Kaina,M.Dupre,G.Lerosey,M.Fink.Shaping complex microwave fields in reverberating media with binary tunable metasurfaces,Scientific Reports,2014,4:6693.
14 A.Ashkin,J.M.Dziedzic,J.E.Bjorkholm,and S.Chu,Observation of a single-beam gradient force optical trap for dielectric particles,Opt.Lett.,1986,11(5):288–290.
15 X.Peng,C.Chen,B.Chen,Y.Peng,M.Zhou,X.Yang,and D.Deng,Optically trapping Rayleigh particles by using focused partially coherent multi-rotating elliptical Gaussian beams,Chin.Opt.Lett.2016,14(1),011405
16 Z.Liu and D.Zhao,Radiation forces acting on a Rayleigh dielectric sphere produced by highly focused elegant Hermitecosine-Gaussian beams,Opt.Express,2012,20(3):2895–2904.
17 X.Liu and D.Zhao,Optical trapping Rayleigh particles by using focused multi-Gaussian Schell-model beams,Appl.Opt.,2014,53 (18):3976–3981.
2 P.Lebedev,Untersuchungen uber die Druckkrafte des Lichtes,Ann.Phys.(Leipzig)6,433(1901).
3 A.Ashkin.Acceleration and trapping of particles by radiation pressure.Phys.Rev.Lett.,1970,24:156-159.
4 B.Liesfeld,R.Nambiar,and J.C.Meiners.Particle transport in asymmetric scanning-line optical tweezers.Phys.Rev.E.,2003,68:051907.
5 D.G.Grier,A revolution in optical manipulation.Nature,2003424 :810–816.
6 Z.Zheng,B.F.Zhang,H.Chen,et al..Optical trapping with focused Airy beams[J].Appl Opt,2011,50(1):43-49.
7 G.M.Terriza,J.P.Torres,L.Torner.Twisted photons[J].Nature Phys,2007,3(5):305-310.
8 D.Zhao,M.Zhu,Generating microwave spatial fields with arbitr ary patterns,IEEE Antennas and Wireless Propagation Letters,2016,15:1739-1742.
9 D.Zhao,H.Sun,B.-Z.Wang,Focus movement control for time reversal focusing microwaves,ICMMT2016,Bingjing,P.R.China,June 5-8,2016[C].
10 D.Zhao,Shaping microwave field of arbitrary intensity patterns in bounded area by time reversal mirror,The 37th PIERS 2016,Shanghai,P.R.China,Aug.8-11,2016,pp.4428-4428[C].
11 赵德双,郭子珍,基于时间反演空时聚焦机制的双聚焦场电磁镊实现方法,申请号:201610802423.4,申请日:2016.09.05
12 赵德双,朱敏,杨昌兴,王秉中,一种基于时间反演电磁波传输的空间电磁场赋形产生方法,中国发明专利,申请号:201410440116.7,申请日:2014-08-29
13 N.Kaina,M.Dupre,G.Lerosey,M.Fink.Shaping complex microwave fields in reverberating media with binary tunable metasurfaces,Scientific Reports,2014,4:6693.
14 A.Ashkin,J.M.Dziedzic,J.E.Bjorkholm,and S.Chu,Observation of a single-beam gradient force optical trap for dielectric particles,Opt.Lett.,1986,11(5):288–290.
15 X.Peng,C.Chen,B.Chen,Y.Peng,M.Zhou,X.Yang,and D.Deng,Optically trapping Rayleigh particles by using focused partially coherent multi-rotating elliptical Gaussian beams,Chin.Opt.Lett.2016,14(1),011405
16 Z.Liu and D.Zhao,Radiation forces acting on a Rayleigh dielectric sphere produced by highly focused elegant Hermitecosine-Gaussian beams,Opt.Express,2012,20(3):2895–2904.
17 X.Liu and D.Zhao,Optical trapping Rayleigh particles by using focused multi-Gaussian Schell-model beams,Appl.Opt.,2014,53 (18):3976–3981.