Iss Cécile, Ortiz Guillermo, Truong Alain, Hou Yanxia, Livache Thierry, Calemczuk Roberto, Sabon Philippe, Gautier Eric, Auffret Stéphane, Buda-Prejbeanu Liliana D, Strelkov Nikita, Joisten Hélène, Dieny Bernard
Univ. Grenoble Alpes, INAC-SX, F-38000, Grenoble, France.
CEA, INAC-SX, F-38000, Grenoble, France.
Sci Rep. 2017 Mar 27;7(1):451. doi: 10.1038/s41598-017-00537-6.
A new kind of nanodevice that acts like tweezers through remote actuation by an external magnetic field is designed. Such device is meant to mechanically grab micrometric objects. The nanotweezers are built by using a top-down approach and are made of two parallelepipedic microelements, at least one of them being magnetic, bound by a flexible nanohinge. The presence of an external magnetic field induces a torque on the magnetic elements that competes with the elastic torque provided by the nanohinge. A model is established in order to evaluate the values of the balanced torques as a function of the tweezers opening angles. The results of the calculations are confronted to the expected values and validate the overall working principle of the magnetic nanotweezers.
设计了一种新型纳米器件，它通过外部磁场的远程驱动起到镊子的作用。这种器件旨在机械抓取微米级物体。纳米镊子采用自上而下的方法构建，由两个平行六面体微元件组成，其中至少有一个是磁性的，由柔性纳米铰链连接。外部磁场的存在会在磁性元件上产生一个与纳米铰链提供的弹性扭矩相抗衡的扭矩。建立了一个模型，以评估平衡扭矩值作为镊子张开角度的函数。计算结果与预期值进行对比，验证了磁性纳米镊子的整体工作原理。
