Research On The Nanomanipulation Of Composite Electrostatic Field And Probe

In recent years,nanowires have been widely used in the fields of nanoelectronics,nanophotonics,nanomedicine,and nanoelectromechanical systems.The connection of nanowires has become a key issue in the miniaturization and integration of devices in future.In the methods of nanowire interconnection,the brazing technology has show greater potential in nanowire interconnection.However,positioning and assembly of nanosolders is so difficult that no flexibly tachnologies can meet it flexibly.In this paper,a new method of picking handling and placing nanosolders by the nanomanipulation of composite electrostatic field and probe based on SEM is proposed,and the research on flexible assembly of nanosolders is carried out to complete the effective interconnection of nanowires.The contact theory between the nanoparticle,the substrate and the probe is explained and analyzed,and then the mechanical model is established for the two-dimensional nanometer operation of the probe contact.The nano-friction force generated in the process is calculated and theoretically deduced based on above theory.Using molecular dynamics theory to simulate the shape and trajectory of nanoparticles driven by probes.The mechanical model of the nanomanipulation of composite electrostatic field and probe is established.The paper analyzed mechanical conditions for realizing motion and analyzed and calculated the van der waals force and electrostatic force theoretically.Then the derivation formula for calculating the electrostatic force using Maxwell's stress tensor method is proposed.A simulation analysis of the nanomanipulation of composite electrostatic field and the probe is carried out.This paper designs the scheme for picking and placing nanosolders,and uses the finite element analysis software to carry out the simulation analysis of the electrostatic field and the Maxwell response generated during the operation about picking and placing nanoparticles.The effects of different influencing factors(interaction interval,nanoparticle radius,probe radius,etc.)on the electric field and electric force during the picking and placeing process are explored,and the advantageous parameters that are conducive to the realization of the nanomanipulaition movement are found.Finally,an experimental study on the nanomanipulation of composite electrostatic field and probe was conducted.The disperse deposition process of nanoparticles and nanowires and the construction of a composite experimental device for electrostatic field and probes were carried out.Two-dimensional nanomanipulation of assembling nanowires and nano solders by the probe contact has been experimentally studied,and the interconnection structure assembly of Zn O nanowires and Ag nanosolders on the same substrate has been successfully realized.Then the electron beam melting process of nano solders has been explored.The brazed interconnection of nanowires is realized.Experiments of transferring across the substrate,and placeing of nanoparticles were carried out on electrostatic nanomanipulation.Through the adjustment of parameters,the pick-up and placement of nanosolders with different diameters was completed.Combined with the probe contact assembly and the composite nanomanipulation of electrostatic field and probe based on SEM,the assembly experiment of the interconnection structure of nanowire brazing has been completed.The electron beam brazing technology is used successfully.The nanowire brazing interconnection is realized,and this method provides a new solution for the effective interconnection of nanowires in the future.