Carbon nanotube single molecular junction preparation method with high success rate

Abstract

The invention discloses a method of precisely stretching a carbon nanotube, and a method and process flow of efficiently constructing a single molecular junction by mean of a carbon nanotube. The carbon nanotube single molecular junction preparation method with a high success rate is implemented through a micro nano processing correlation technique and a mechanical controllable breakage junction technique. The carbon nanotube single molecular junction preparation method includes the steps: through a series of micro nano processing flows, making a stable single wall carbon nanotube chip; disposing the single wall carbon nanotube chip on a three-point bending device; continuously bending the chip substrate to break the single wall carbon nanotube so as to form a gap-controllable electrode pair; and forming a single wall carbon nanotube single molecule junction by adding organic molecules in the gap. The carbon nanotube single molecular junction preparation method can accurately regulate and control the size of the gap to match various molecule lengths, thus being able to realize high production capacity production of single wall carbon nanotube single molecule junctions, laying the foundation for realizing molecule devices with high performance, and having a relatively higher reference value for development of molecular electronics.

Description

technical field [0001] The invention belongs to a single-molecule junction with a single-walled carbon nanotube as an electrode, and relates to molecular electronics, nanometer materials, chemistry and many other fields. Background technique [0002] In the trend of miniaturization of electronic devices, molecular electronics has developed rapidly in recent years, and various molecular junction technologies have emerged as the times require. Moreover, compared with the multi-molecular junction, the unimolecular junction is smaller but does not lose its original characteristics, so the unimolecular junction has been greatly developed. So far, there are many techniques for constructing unimolecular junctions, including electromigration, electrochemical deposition, surface expansion-mediated deposition, scanning probe microscopy, and mechanically controlled fracture junctions. Compared with other technologies, the mechanically controlled fracture junction method has shown many...

AI Technical Summary

Problems solved by technology

[0004] Generally, even if some methods use single-walled carbon nanotubes as electrodes to prepare single-molecule junctions, the success rate is low, consuming a lot of manpower, material and financial resources, and the results may not be realized.

Images