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Method for preparing gold-silver alloy annular nanostructure substrate

A gold-silver alloy and nanostructure technology, applied in nanotechnology, nanotechnology, nanotechnology for sensing, etc., can solve the problems of high preparation cost, harsh conditions, and restrictions on large-scale promotion and application, and achieve Raman spectroscopy enhanced effect

Pending Publication Date: 2021-12-28
XIAN UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Common top-down preparation technologies include photolithography, ion beam, and electron beam. Due to the disadvantages of high preparation cost, harsh conditions, and low yield, the large-scale application of the above technologies is limited to a certain extent.

Method used

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  • Method for preparing gold-silver alloy annular nanostructure substrate
  • Method for preparing gold-silver alloy annular nanostructure substrate
  • Method for preparing gold-silver alloy annular nanostructure substrate

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Embodiment Construction

[0038] The technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are only some of the embodiments of this application, not all of them. The components of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0039] It should be noted that like numerals and letters denote similar items in the following figures, theref...

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Abstract

The invention relates to a method for preparing a gold-silver alloy annular nanostructure substrate, in particular to the field of nanostructure substrate preparation. The method provided by the invention comprises the following steps: a prefabricated gold-silver alloy nanoparticle colloidal suspension and cyclohexane are mixed , and the mixture is placed in a container; an ethanol solution is injected into the container, so that the contact angle between the gold-silver alloy nanoparticles and the interface between the water solution and the cyclohexane is close to 90 degrees, then the gold-silver alloy nanoparticles form a gold-silver alloy nanoparticle film on the interface between the water solution and the cyclohexane, and the cyclohexane is taken out of the container; a preset substrate is used for fishing up the gold-silver alloy nanoparticle film and drying the gold-silver alloy nanoparticle film for a first preset time, a gold-silver alloy annular nanostructure substrate is obtained, and a plurality of nano holes are formed in the surface of the preset substrate; and a preset detection molecule is arranged on the surface of the gold-silver alloy annular nanostructure substrate.

Description

technical field [0001] The present application relates to the field of nanostructure substrate preparation, in particular to a method for preparing a gold-silver alloy annular nanostructure substrate. Background technique [0002] Surface-enhanced Raman scattering (SERS) technology is one of the typical applications of enhanced Raman spectroscopy. The localized surface plasmon resonance (LSPR) formed by the subwavelength nanostructured SERS substrate under the excitation of an external field causes the localized electromagnetic field of the substrate to be enhanced. , resulting in a significant enhancement of the Raman signal of the detection molecules adsorbed on the SERS substrate. In recent years, surface-enhanced Raman scattering technology has been widely used in food safety, drug detection, biosensing, water quality monitoring, medical research and other fields due to its high sensitivity, short time-consuming, label-free and chemical specificity. [0003] The surface...

Claims

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Application Information

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IPC IPC(8): G01N21/65C25F3/16C25F3/20B82Y30/00B82Y40/00B82Y15/00
CPCG01N21/658C25F3/16C25F3/20B82Y30/00B82Y40/00B82Y15/00
Inventor 董军王炎韩庆艳高伟王勇凯曹怡祁建霞
Owner XIAN UNIV OF POSTS & TELECOMM
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