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Preparation method of conical silver nanoprobe

A silver nano, probe technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the rough surface of the probe, reduce the optical transmission and convergence performance of surface plasmons, etc. question

Inactive Publication Date: 2021-06-04
CAPITAL NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The surface of the probes prepared by these methods is often rough and uneven, and there are a large number of defects and grain boundaries, which greatly reduce the optical transmission and convergence performance of surface plasmons.

Method used

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  • Preparation method of conical silver nanoprobe
  • Preparation method of conical silver nanoprobe
  • Preparation method of conical silver nanoprobe

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Embodiment Construction

[0020] In the drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] In the description of the present invention, the terms "central", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the scope of the invention.

[0022] In the case of no conflict, ...

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Abstract

The invention discloses a preparation method of a conical silver nanoprobe. The method comprises the following steps that 1, ethylene glycol is added into a three-neck flask and continuously stirred and heated by means of a magnetic stirrer, and a condensation return pipe is arranged to enable the volatilized ethylene glycol to flow back into the three-neck flask; 2, ethylene glycol and polyvinylpyrrolidone are added into a first beaker and uniformly stirred by means of the magnetic stirrer to be marked as a first reaction solution; 3, ethylene glycol, silver nitrate and ferric chloride are added into a second beaker and uniformly stirred by means of the magnetic stirrer to be marked as a second reaction solution; 4, after the first reaction solution and the second reaction solution are uniformly mixed, a mixture is dropwise added into the three-neck flask, and continuously heated for preset time; and 5, after a product in the three-neck flask is cooled to a room temperature, the product is poured into a centrifugal tube, and the product is centrifugally cleaned by using deionized water to obtain the conical silver nanoprobe. The conical silver nanoprobe with a smooth surface is prepared through the method provided by the embodiment of the invention.

Description

technical field [0001] The invention relates to the technical field of nano-probe preparation, in particular to a method for preparing a tapered silver nano-probe. Background technique [0002] The unique surface plasmon nanofocusing function of one-dimensional tapered metal nanoprobes provides an effective way for the directional transmission and convergence of electromagnetic field energy at the nanoscale. In particular, with the development of nano-optical probe technology and single-molecule optical detection in recent years, metal nano-probes have been widely used in the research fields of tip-enhanced Raman, high-resolution near-field optical imaging, and nano-optical waveguides. At present, people mainly use "top-down" methods to prepare metal nanoprobes, such as electron beam etching, electrochemical corrosion, etc. The surface of probes prepared by these methods is often rough and uneven, and there are a large number of defects and grain boundaries, which greatly r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB22F9/24B82Y40/00B82Y30/00B22F1/0553B22F1/054
Inventor 杨龙坤蔡宇鹏
Owner CAPITAL NORMAL UNIVERSITY
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