Optomagnetically Controlled Microparticles Manufactured with Glancing Angle Deposition.
Optomagnetically Controlled Microparticles Manufactured with Glancing Angle Deposition.
复制标题
DOI：
10.1002/ppsc.201500033
复制
发表时间：
2015-07
期刊：
影响因子：
--
通讯作者：
Clark RL
中科院分区：
文献类型：
--
作者：
Lawson JL;Jenness NJ;Clark RL
光学捕获和磁捕获是用于控制包括微米和纳米颗粒的胶体的常见微操纵技术。结合这两种操作策略允许更大范围的施加力和旋转和平移的解耦控制;其中每一个都是许多应用的有益特性，包括力谱和先进制造。然而，光学捕获和磁捕获具有相互冲突的材料要求，阻碍了这些方法的结合。本文采用掠射角沉积（GLAD）技术合成了能够同时被光和磁捕获控制的各向异性微米级颗粒。电介质和铁磁材料的各向异性排列限制了来自金属部件的光学散射，这通常会阻止三维中的稳定光学捕获。与现有技术相比，这种方法的好处是双重的。首先，复合结构允许更大体积的铁磁材料，使得可以施加更大的磁矩而不抑制光俘获的稳定性。其次，大大提高了合成过程的鲁棒性。通过使用定制设计的光磁捕获系统同时光学平移和磁性旋转磁性GLAD颗粒来证明合成胶体的双重光学和磁性功能。合成了能够同时进行光和磁捕获的各向异性颗粒。这些微操作技术通常是相互排斥的，这是由于材料的不兼容性，其中铁磁材料将导致过度的光学散射。所描述的合成方法允许放置磁性材料，使得防止光学诱导的不稳定性，从而产生光学和磁性功能颗粒。
Optical trapping and magnetic trapping are common micro-manipulation techniques for controlling colloids including micro- and nano-particles. Combining these two manipulation strategies allows for a larger range of applied forces and decoupled control of rotation and translation; each of which are beneficial properties for many applications including force spectroscopy and advanced manufacturing. However, optical trapping and magnetic trapping have conflicting material requirements inhibiting the combination of these methodologies. In this paper, anisotropic micron scaled particles capable of being simultaneously controlled by optical and magnetic trapping are synthesized using a glancing angle deposition (GLAD) technique. The anisotropic alignment of dielectric and ferromagnetic materials limits the optical scattering from the metallic components which typically prevents stable optical trapping in three dimensions. Compared to the current state of the art, the benefits of this approach are two-fold. First, the composite structure allows for larger volumes of ferromagnetic material so that larger magnetic moments may be applied without inhibiting the stability of optical trapping. Secondly, the robustness of the synthesis process is greatly improved. The dual optical and magnetic functionality of the synthesized colloids is demonstrated by simultaneously optically translating and magnetically rotating a magnetic GLAD particle using a custom designed opto-magnetic trapping system. Anisotropic particles are synthesized which are capable of simultaneous optical and magnetic trapping. These micro-manipulation techniques are typically exclusive of one another due to material incompatibilities in which ferromagnetic material will lead to excessive optical scattering. The synthesis process described allows for the placement of magnetic material such that optically induced instabilities are prevented creating optically and magnetically functional particles.
登录
查看更多内容
影响因子：
1.6
作者：
GHISLAIN, LP;SWITZ, NA;WEBB, WW
通讯作者：
WEBB, WW
影响因子：
41.2
作者：
Lee, Howon;Kim, Junhoi;Kwon, Sunghoon
通讯作者：
Kwon, Sunghoon
影响因子：
10.8
作者：
Champion, Julie A.;Katare, Yogesh K.;Mitragotri, Samir
通讯作者：
Mitragotri, Samir
影响因子：
3.6
作者：
ASHKIN, A;DZIEDZIC, JM;CHU, S
通讯作者：
CHU, S
影响因子：
2.3
作者：
DAY, R;FULLER, M;SCHMIDT, VA
通讯作者：
SCHMIDT, VA