High-precision, large-domain three-dimensional manipulation of nano-materials for fabrication nanodevices
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NANO EXPRESS
Open Access
High-precision, large-domain three-dimensional manipulation of nano-materials for fabrication nanodevices Rujia Zou, Li Yu, Zhenyu Zhang, Zhigang Chen and Junqing Hu*
Abstract Nanoscaled materials are attractive building blocks for hierarchical assembly of functional nanodevices, which exhibit diverse performances and simultaneous functions. We innovatively fabricated semiconductor nano-probes of tapered ZnS nanowires through melting and solidifying by electro-thermal process; and then, as-prepared nanoprobes can manipulate nanomaterials including semiconductor/metal nanowires and nanoparticles through sufficiently electrostatic force to the desired location without structurally and functionally damage. With some advantages of high precision and large domain, we can move and position and interconnect individual nanowires for contracting nanodevices. Interestingly, by the manipulating technique, the nanodevice made of three vertically interconnecting nanowires, i.e., diode, was realized and showed an excellent electrical property. This technique may be useful to fabricate electronic devices based on the nanowires’ moving, positioning, and interconnecting and may overcome fundamental limitations of conventional mechanical fabrication. Keywords: nano-probe, ZnS nanowire, manipulation, TEM-STM, nanodevices
Introduction The main driving engine of the IT revolution has been geometrical miniaturization of transistors. This has been accomplished with a striking development in microfabrication technology, referred to as “Moore’s law”, i.e., the number of transistors on an integrated circuit (IC) doubles every 2 years, and industrial guidelines enable multiple devices to be integrated within a given chip area [1,2]. For the past decade, however, the size of the microchips has remained roughly constant and we are approaching the atomic limit of a critical size. Clearly, this evolution cannot continue down this same path much longer. In reality, they are not likely to replace the ordinary transistors, but they may well provide the paradigm shift that will extend “Moore’s law”. One-dimensional nanoscaled materials, nanowires (NWs), nanotubes (NTs), or even composite nanowires made up of different materials represent attractive building blocks for hierarchical assembly of functional nanoscale * Correspondence: [email protected] State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
devices, which can exhibit a real device with diverse performances and simultaneously function as the “wires”, i. e., they can access and interconnect devices that could overcome fundamental limitations of conventional fabrication [3-7]. These unique properties and the intrinsically miniaturized dimensions of NWs’ and NTs’ building blocks may facilitate the continuation and extension of Moore’s law and the evolutionary demand for even faster and smaller electronics in the future. So far, Ferry has develope
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