[1]范春珍,王俊俏,程永光,等.铁磁壳层纳米颗粒周围局域电场的研究[J].郑州大学学报(工学版),2013,34(03):26-29.[doi:10.3969/j.issn.1671-6833.2013.03.007]
　FAN Chunzhen,WANGJunqiao,CHENG Yongguang,et al.Local Electric Field Distribution Around Core／Shell Nanoparticles in Ferrofluids[J].Journal of Zhengzhou University (Engineering Science),2013,34(03):26-29.[doi:10.3969/j.issn.1671-6833.2013.03.007]
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铁磁壳层纳米颗粒周围局域电场的研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34卷
期数:
2013年03期
页码:
26-29
栏目:
出版日期:
2013-05-31

文章信息/Info

Title:
Local Electric Field Distribution Around Core／Shell Nanoparticles in Ferrofluids
作者:
范春珍; 王俊俏; 程永光; 等.
郑州大学物理工程学院,河南郑州,450001, 郑州大学物理工程学院,河南郑州,450001, 郑州大学物理工程学院,河南郑州,450001, 郑州大学物理工程学院,河南郑州,450001
Author(s):
FAN Chun—zhen; WANGJun—qiao; CHENG Yong—guang; LIANG Er—jun
School of Physical Science and Engineering，Zhengzhou University，Zhengzhou 450052，China)
关键词:
核壳纳米颗粒;  拉普拉斯方程;  局域电场
Keywords:
core—shell nanoparticle; Laplace’S equation; local electric field
分类号:
O 441.6
DOI:
10.3969/j.issn.1671-6833.2013.03.007
文献标志码:
A
摘要:
研究了在外加磁场的影响下,铁磁流体溶液中壳层纳米颗粒周围局域电场的分布,其中,壳层结构的铁磁纳米颗粒是由磁性纳米颗粒(钴)核与贵金属(金)壳组成.该结构将金属的光学性质和颗粒的磁场驱动效应有效地结合起来.在外加磁场的影响下,复合铁磁颗粒将会沿着外加磁场的方向排列,形成磁纳米链,磁纳米链中复合颗粒在外加磁场的影响下发生极化,导致颗粒之间产生相互作用.通过解拉普拉斯方程,可以得到复合颗粒周围局域电场的表达式.计算结果表明,壳层颗粒周围的局域电场与金属壳层厚度、复合颗粒之间的距离以及颗粒中心连线的夹角有密切关系.
Abstract:
We investigate the electric fielddistribution around ferromagneticnanoparticles(NPs)inferrofluids underthe infuenceof external magneticfield．Specifically，magneticcore(cobalt)coated with a metallic lay．er(gold)isconsidered，which incorporated optically actively component with magneticNPs．Due to the magnetic response，the core／shellNPswill alignalong the direction of external magnetic field，thus forminga linear NPschain in the system．With the solution of Laplace’S equations，electric fields inside andoutside the NPschain are explored as a function of the incident wavelength operatingonthe basis of mutualinteraction a— mongthe polarizedparticles．Analytical study showsthat themaximummagnitudeof the electric filed is closely related to the resonant incident wavelength．the metallic shell thicknessandthe inter．particle distance．

参考文献/References:

[1]CHAUDHURIAND R G，PARIA S。Core／Shell Nanoparticles：classes，properties，synthesis，mechanisms，characterization，and applications[J]．Chemical Reviews，2012，112(4)：2373—2433．

更新日期/Last Update: 1900-01-01