Papers by Keyword: Nanomanipulation

Abstract: The numerous 1-D and 2-D nanomaterials: nanotubes, nanowires (NWs), graphene, etc. were discovered, synthesized and intensively studied in the past decades. These nanomaterials had appeared to reveal the unique physical and functional properties allowing constructing the large number of nanodevice based on single nanoobjects. Recently many studies have led to a wide range of proof-of-concept of individual nanoscale devices including nanolasers, nanosensors, field-effect transistors (nanoFETs) and many others based on NWs, carbon nanotubes (CNT) and many other nanoobjects. Such nanodevices represent attractive building blocks for hierarchical assembly of microscale and macroscopic devices which are attractive for creating of micro-and –macro-devices and arrays by the bottom-up and hybrid paradigm. In this paper the conceptual survey is given of nowadays achievements in the field of mechanical bottom-up nanoassembling. We emphasize on the system based on smallest and the fastest in the World nanotweezer developed on the base of the new smart materials with shape memory effect for nanomanipulation of real nanoobjects. We discuss the recent experiments on nanomanipulation, nanoassembling and nanomanufacturing of nanoand micro-devices using this method, which in many cases can replaced very expensive “top-down” technologies.

Abstract: This work provides a review of commonly used approaches for fine manipulations with nanoobjects by means of scanning probe microscopes and describes an original alternative cost-effective nanomanipulation method. High precision manipulations are important for up-to-date technologies of nanoelectronic, molecular, hybrid and nanomechanical devices and sensor systems especially for the state of the art fundamental and applied researches. A new method to form nanoassemblies by using asymmetric nanoparticles fixed on the surface with the viscoelastic linker has been proposed, theoretically substantiated and experimentally realized. An original theoretical model has been proposed to describe the ordering process of the linked nanorods by means of the multipass interaction with an atomic force microscope (AFM) tip.In addition, an adjustment of the tip-surface interaction has been proposed and implemented which is independent of the AFM. This original approach is based on additional ultrasonic excitation of the surface. This also enabled us to control the degree binding of the nanoparticles with the substrate.With these techniques we were able to form sets of chains (more than 5-μm length) consisting of nanometer-sized (10x50 nm) gold nanorods (NRs) linked to the surface of gallium arsenide by an organic linker. It has been shown that the viscoelastic binding of asymmetric nanoparticles to the surface allows us to create linear assemblies of nanoobjects in just a few passes of the AFM probe.The proposed technique significantly increases manufacturability of nanomanipulations. Direct formation of nanostructures can significantly reduce the cost of their formation in comparison with modern conventional technological approaches, which in many cases may even have some fundamental limitations (in resolution, in materials used, etc.).

Abstract: This work lies on the framework of an interactive virtual environment for nanomanipulation. The model for the simulation of a manipulated nanoparticle dynamics in the virtual environment is constructed from the computed molecular dynamics. According to the operation by single-tip scanning probe microscope(SPM) for the nanomanipulation, the molecular forces are calculated based on the Lennard-Jones force-field such that the motion of the manipulated nanoparticles can be rendered for real-time virtual reality applications. Moreover, by coupling the CAD softwares to virtual reality (VR) techniques, the interactive virtual environment is developed for intuitive nanomanipulation visualization. Using the simulated nanomanipulation environment in VR, the operator can characterize and control the behavior of nanoparticles under the assumed SPM through physical simulation and 3D visualization.

Abstract: We developed a real-time nanomanipulation system based on high-speed atomic force microscopy (HS-AFM). During manipulation, the operation of the manipulation is momentarily interrupted for a very short time for high-speed imaging; thus, the topographical image of the fabricated surface is periodically updated during the manipulation. By using a high-speed imaging technique, the interrupting time could be much reduced during the manipulation; as a result, the operator almost does not notice the blink time of the interruption for imaging during the manipulation. As for the high-speed imaging technique, we employed a contact-mode HS-AFM to obtain topographic information through the instantaneous deflection of the cantilever during high-speed scanning. By using a share motion PZT scanner, the surface could be imaged with a frame rate of several fps. Furthermore, the high-speed AFM was coupled with a haptic device for human interfacing. By using the system, the operator can move the AFM probe into any position on the surface and feel the response from the surface during manipulation. As a demonstration of the system, nanofabrication under real-time monitoring was performed. This system would be very useful for real-time nanomanipulation and fabrication of sample surfaces.

Abstract: In this paper, a master/slave telenanomanipulation control system with force feedback is established with the micro-positioner (Attocube) working in scanning electron microscope (SEM) as the slave side and the haptic device (Omega3) as the master side. An improved virtual coupling (IVC) algorithm is introduced based on nanoscale virtual coupling (NSVC) by adding a proportional- plus-integral (PI) velocity controller in the haptic interface. The stability and performance of the established system are discussed. This method leads to an explicit design procedure for virtual coupling networks which give greatest performance while guaranteeing stability both on moving carbon nanowires in SEM and measuring force at the point of device-human contact.

Abstract: This paper describes how the web technologies are utilized for a robot system synthesis. A web application is created for automation of the synthesis of closed structures for micro- and nano-applications, utilizing the advantages tense piezo-actuators and closed robot kinematical structures. The algorithm, integrated into the developed web based application, offers a synthesis of robot kinematic chains without extensive knowledge in this domain. The aim is to facilitate synthesis of such kind of kinematic chains from specialists who will generate optimal solutions for automation and robotisation of the requested micro- and nano-process.

Abstract: Nanostructures materials have stimulated broad attention in the past decade because of their potential fundamental characteristics and its promising applications in nano electronic devices. In the present investigation, crystalline boron nanowires (BNWs) were synthesized by vapor liquid solid (VLS) technique and its mechanical properties were studied using a nanomanipulator inside a scanning electron microscope (SEM). Electron beam induced deposition (EBID) method was used to clamp boron nanowire to the AFM tips. The Young’s modulus of the NWs were determined from the buckling instability of NW and computed to be approximately 131.7 ± 14.6GPa. In addition, the nanomanipulation system was used to manipulate nanowire and built a nanoring.