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Inclined metal nano-structure and preparation method thereof

A metal nanostructure and metal technology, which is applied in the preparation of test samples, metal material coating process, ion implantation plating, etc., can solve the problems of difficult preparation process of inclined metal nanostructures, limited effective area of ​​samples, time-consuming and labor-intensive, etc. , to achieve the effect of convenient optical detection, time saving and strong controllability

Active Publication Date: 2017-07-28
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, these methods have great difficulties in the operation and preparation process when preparing tilted metal nanostructures, and are time-consuming and laborious, and the cost is relatively expensive; moreover, these two techniques also need to use deposition steps, and the samples prepared by them The effective area of ​​the sensor is limited, which poses a great challenge to the subsequent work of spectrum acquisition, and requires more energy and time for debugging to measure the signal

Method used

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  • Inclined metal nano-structure and preparation method thereof
  • Inclined metal nano-structure and preparation method thereof
  • Inclined metal nano-structure and preparation method thereof

Examples

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Embodiment 1

[0042] Such as figure 2 The tilted silver nanostructure shown, deposited on the surface of a polystyrene sphere, consists of a first silver layer, a silicon dioxide layer, a second silver layer, and a third silver layer, the first silver layer and the silicon dioxide The layers are all deposited on the surface of polystyrene pellets, and the first silver layer and the silicon dioxide layer are butted together, and the second silver layer is deposited on the upper surface of the silicon dioxide layer; the third silver layer is perpendicular to the second silver layer and the first silver layer, and the third silver layer is deposited on the upper surface upper ends of the first silver layer and the second silver layer;

[0043]The thicknesses of the first silver layer, the second silver layer and the third silver layer are the same, and the thickness of the silicon dioxide layer is greater than that of the first silver layer, the second silver layer and the third silver layer....

Embodiment 2

[0063] The difference between the preparation method of this example and Example 1 is that the deposition time of silicon dioxide is 600 s, and the rest are the same as Example 1.

[0064] Put the structure obtained in this embodiment into a cuvette, and measure its circular dichroism signal by normal incidence in a circular dichroism spectrometer, and obtain the following: Figure 5 The deposition time of the insulating material is the curve of 600s.

Embodiment 3

[0066] The difference between the preparation method of this example and Example 1 is that the deposition time of silicon dioxide is 700s, and the rest are the same as Example 1.

[0067] Put the structure obtained in this embodiment into a cuvette, and measure its circular dichroism signal by normal incidence in a circular dichroism spectrometer, and obtain the following: Figure 5 The deposition time of medium insulating material is 700s curve.

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Abstract

The invention discloses an inclined metal nano-structure and a preparation method thereof. According to the preparation method, a part of deposited metal materials are lifted through deposited insulating materials by the aid of a polystyrene small-ball template, so that the whole metal structure generates a certain inclined angle, metal materials are deposited to form the metal structure, a circular dichroism spectrum of the structure can be acquired by a normal incidence method, and enhanced circular dichroism singles can be acquired after deposition time of the deposited insulating materials are prolonged. Compared with a method for preparing inclined structures by the aid of techniques such as electron beam lithography and laser direct writing, the method has the advantages that the step is simple in step and high in controllability, and time is saved, and the inclined structure prepared by the method can be applied to sensing devices of chiral information of enhanced chiral molecules.

Description

technical field [0001] The invention belongs to the technical field of metal nanostructure preparation, and in particular relates to an inclined metal nanostructure and a preparation method thereof. Background technique [0002] The word chirality is derived from Greek and means the symmetry of structure, which has important meaning in many disciplines. An object is said to be "chiral" if it is different from its mirror image, and its mirror image cannot be superimposed on the original object, just as the left and right hands are mirror images of each other and cannot be superimposed. Chirality is the basic characteristic of life process, and most of the organic molecules that make up living organisms are chiral molecules. [0003] According to the disclosed technology, circular dichroism (CD, circular dichroism) is a very important means to study chiral compounds. The positive, negative and spin spectra of the Cotton Effect (Cotton Effect) at specific wavelengths are left ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28C23C14/22
CPCC23C14/225G01N1/28
Inventor 张中月王天堃付统
Owner SHAANXI NORMAL UNIV
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