基于最小作用量原理的纳米颗粒操作建模研究  

Study on nanoparticle manipulation modeling based on the least action principle

作　　者：刘天波[1] 刘瑜[1] 袁帅[1] 刘丹[2] 侯静[3] 

机构地区：[1]沈阳建筑大学信息与控制工程学院沈阳110168 [2]沈阳建筑大学理学院沈阳110168 [3]东北大学信息科学与工程学院沈阳110004

出　　处：《高技术通讯》2015年第7期725-733,共9页Chinese High Technology Letters

基　　金：国家自然科学基金(61305125)资助项目

摘　　要：进行了用原子力显微镜(AFM)推动纳米颗粒的研究,以解决因探针推动力方向受针尖形貌影响很难建立有效的操作模型,导致纳米颗粒操作不稳定,操作结果不可控的问题。为了预测AFM推动纳米颗粒后颗粒的位置,基于最小作用量原理,对操作纳米颗粒过程中的作用力进行了分析;考虑了探针针尖与纳米颗粒之间接触点上推动方向对操作力的影响,对纳米颗粒操作进行了建模。根据建立的操作模型,仿真模拟了纳米颗粒推动后颗粒的运动轨迹。最后通过多次试验进行了验证,试验数据表明该操作模型可以有效地预测纳米颗粒推动后的位置,提高了操作效率。The study of using atomic force microscope （AFM） to manipulate nanoparticles was conducted to deal with the problem that the AFM tip＇ s pushing direction is affected by the tip shape so an effective manipulation model is dif- ficult to establish, thus leading to unstable nanoparticle manipulation and uncontrollable manipulation result. To forecast nanoparticles＇ location, the force action in the nano-manipulation process was analyzed based on the least action principle, and a nanoparticle manipulation model was established with the consideration of the effect of the direction in pushing the contract point between the probe tip and a nanopaticle on manipulation. Then nanoparti- cles＇ trajectory was simulated according to the proposed model. Several experiments were performed and the results indicate that the proposed model can effectively estimate the position of a nanoparticle after pushing and improve the maneuvering efficiency.

关 键 词：原子力显微镜(AFM) 纳米操作 最小作用量原理 操作模型 

分 类 号：TB383.1[一般工业技术—材料科学与工程]