A method for preparing a one-dimensional nanomaterial-based sensor

Abstract

A method for preparing a one-dimensional nanomaterial-based sensor is disclosed. The method includes dropping a suspension of a one-dimensional nanomaterial onto a substrate; combing the suspension onthe substrate with a tool brush in a constant speed; then allowing the product to stand; drying the substrate so that the one-dimensional nanomaterial is more closely bonded with the substrate through the van der Waals force; after photoresist removing, allowing the solution on the surface of the substrate to volatize so that the one-dimensional nanomaterial is uniformly arranged on the substratein a large area; forming an interdigital electrode pattern through a photoetching process; and stripping after the substrate surface is plated with gold to obtain the one-dimensional nanomaterial-based sensor. The sensor has characteristics of excellent electrical properties and high sensitivity. The method is suitable for a plurality of one-dimensional nanomaterials such as zinc oxide and silicon, and is suitable for different substrates such as silica and glass. The distribution density and arrangement uniformity of the one-dimensional nanomaterial can be achieved through changing the dimension of an assembling tool, and large-area production is hoped to be possible if a large-dimension precise mechanical assembling tool is put into use. The method has a wide application prospect in thefield of manufacturing and integration of nanometer devices.

Description

technical field [0001] The invention belongs to the technical field of assembly of nanomaterials and preparation of sensors, in particular to a method for preparing a sensor based on one-dimensional nanomaterials. Background technique [0002] Sensor technology is one of the fast-growing high-tech technologies in today's world, and it is also an important symbol of the development of contemporary science and technology. The sensor research based on one-dimensional nanomaterials is the frontier hotspot of research in various countries, and it is an important part with the most application value in the field of sensor technology. As a versatile assembly unit, one-dimensional nanomaterials have attracted attention in many fields such as electronics, optics, bioscience, energy storage, etc. Compared with traditional planar semiconductor materials, one-dimensional nanomaterials have unique electrical and optical properties due to their larger specific surface area and two-dimens...

AI Technical Summary

Problems solved by technology

Fan et al. [Smith, P.A.; Nordquist, C.D.; Jackson, T.N.; Mayer, T.S.; Martin, B.R.; Mbindyo, J.; Mallouk, T.E. Electric-field assisted assembly and alignment of metallic nanowires. 77, 1399–1401.] Using contact printing to arrange semiconductor nanomaterials in an orderly manner, the surface may be damaged due to poor contact between the nanomaterials and the substrate

Whang et al [Whang, D.; Jin, S.; Wu, Y.; Lieber, C.M. Large-scale hierarchical organization of nanowire arrays for integrated nanosystems. Nano Lett. 2003, 3, 253–256.] used the Langmuir–Blodgett method to control a organization and hierarchy of one-dimensional silicon nanomaterials, however, this technique requires complex surface modification, and the arrangement of one-dimensional nanomaterials depends on the control of surface pressure

Zhang et al. [Zhang Q, Gupta S, Todd Emrick A, et al.Surface-Functionalized CdSe Nanorods for Assembly in Diblock Copolymer Templates[J].Journal of the American Chemical Society,2006,128(12):3898-3899.] CdSe nanorods were successfully assembled using geometric pattern template induction, but the process is relatively complicated

Most of the above methods require expensive instruments and equipment, and the cost is relatively high.

Images