CN112415275A - Electric field detection device based on double-layer precious metal micro-nano structure - Google Patents

Electric field detection device based on double-layer precious metal micro-nano structure Download PDF

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CN112415275A
CN112415275A CN202011305855.7A CN202011305855A CN112415275A CN 112415275 A CN112415275 A CN 112415275A CN 202011305855 A CN202011305855 A CN 202011305855A CN 112415275 A CN112415275 A CN 112415275A
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metal micro
nano structure
layer
noble metal
electric field
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不公告发明人
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B81—MICROSTRUCTURAL TECHNOLOGY
    • B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
    • B81B7/00—Microstructural systems; Auxiliary parts of microstructural devices or systems
    • B81B7/04—Networks or arrays of similar microstructural devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B81—MICROSTRUCTURAL TECHNOLOGY
    • B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
    • B81B2201/00—Specific applications of microelectromechanical systems
    • B81B2201/02—Sensors
    • B81B2201/0292—Sensors not provided for in B81B2201/0207 - B81B2201/0285

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  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The invention provides an electric field detection device based on a double-layer precious metal micro-nano structure, wherein a pit is formed in the surface of a substrate layer, a heating part is arranged in the pit, the surface of the heating part is flush with the surface of the substrate layer, a first precious metal micro-nano structure layer is fixed on the heating part, organic conjugated polymer material parts are arranged on the first precious metal micro-nano structure layer and the substrate layer, a second precious metal micro-nano structure layer is arranged on the surface of the organic conjugated polymer material part at the top of the first precious metal micro-nano structure layer, a first force application part and a second force application part are respectively arranged on two sides of the heating part on the substrate layer, the first force application part and the second force application part are respectively and fixedly connected to two ends of the organic conjugated polymer material part, and the first precious metal micro-nano. The invention has the advantage of high electric field detection sensitivity.

Description

Electric field detection device based on double-layer precious metal micro-nano structure
Technical Field
The invention relates to the field of electric field detection, in particular to an electric field detection device based on a double-layer precious metal micro-nano structure.
Background
The measurement of the electric field has great significance for military industry such as missile, aircraft, rocket launching and the like, and also has wide application in places which are easy to cause static electricity and are easy to be damaged by static electricity and radar on civil ground such as urban environmental pollution, oil refineries, ultra-clean laboratories, oil storage stations and the like. The traditional electric field measuring device has low sensitivity, and the exploration of an electric field detection technology based on a new principle has important significance for improving the sensitivity of electric field measurement.
Disclosure of Invention
In order to solve the problems, the invention provides an electric field detection device based on a double-layer noble metal micro-nano structure, which comprises a substrate layer, a heating part, a first noble metal micro-nano structure layer, an organic conjugated polymer material part, a second noble metal micro-nano structure layer, a first force application part and a second force application part, wherein the surface of the substrate layer is provided with a pit, the heating part is arranged in the pit, the surface of the heating part is flush with the surface of the substrate layer, the first noble metal micro-nano structure layer is fixed on the heating part, the organic conjugated polymer material part is arranged on the first noble metal micro-nano structure layer and the substrate layer, the second noble metal micro-nano structure layer is arranged on the surface of the organic conjugated polymer material part at the top of the first noble metal micro-nano structure layer, the first force application part and the second force application part are respectively arranged at two sides of the heating part on the substrate layer, the first noble metal micro-nano structure layer and the second noble metal micro-nano structure layer form a chiral composite structure.
Further, the material of the organic conjugated polymer material portion is poly-3-hexylthiophene.
Furthermore, the first noble metal micro-nano structure layer comprises a plurality of first nanorods, and the first nanorods are periodically arranged; the second noble metal micro-nano structure layer comprises a plurality of second nanorods, and the second nanorods are periodically arranged.
Further, the period is square.
Furthermore, the first nanorod is along the connecting line direction of the first force application part and the second force application part.
Further, the direction of the second nanorods is perpendicular to the direction of the connection line of the first force application part and the second force application part.
Further, the end of the second nanorod is located above the end of the first nanorod.
Further, the material of the first nanorods and the second nanorods is gold or silver.
Furthermore, a second organic conjugated polymer material is arranged on the second noble metal micro-nano structure layer.
Further, the second organic conjugated polymer material is the same as the material of the organic conjugated polymer material portion.
The invention has the beneficial effects that: the invention provides an electric field detection device based on a double-layer noble metal micro-nano structure, which comprises a substrate layer, a heating part, a first noble metal micro-nano structure layer, an organic conjugated polymer material part, a second noble metal micro-nano structure layer, a first force application part and a second force application part, wherein the surface of the substrate layer is provided with a pit, the heating part is arranged in the pit, the surface of the heating part is flush with the surface of the substrate layer, the first noble metal micro-nano structure layer is fixed on the heating part, the organic conjugated polymer material part is arranged on the first noble metal micro-nano structure layer and the substrate layer, the second noble metal micro-nano structure layer is arranged on the surface of the organic conjugated polymer material part at the micro-nano top of the first noble metal structure layer, the first force application part and the second force application part are respectively arranged at two sides of the heating part on the substrate layer, and the, the first noble metal micro-nano structure layer and the second noble metal micro-nano structure layer form a chiral composite structure. When the method is applied, firstly, in an electric field-free space, fixed pulling force or pressure is applied between the first force application part and the second force application part, and circular dichroism of the chiral composite structure is measured, wherein the heating part is at normal temperature; then, the invention is placed in an electric field to be measured, the organic conjugated polymer material part is heated by the heating part at the same time, after the organic conjugated polymer material part is heated for a period of time, the organic conjugated polymer material part is cooled, the tension or pressure between the first force application part and the second force application part is kept unchanged, the circular dichroism of the chiral composite structure is measured again, and the electric field to be measured is determined according to the change of the circular dichroism of the front and rear chiral composite structures. In the heating process, the direction of the molecular chain of the organic conjugated polymer material part is changed by the electric field to be detected, the dielectric environment around the first noble metal micro-nano structure layer and the second noble metal micro-nano structure layer is changed, the position of the second noble metal micro-nano structure layer relative to the first noble metal micro-nano structure layer is changed, and therefore circular dichroism of the chiral composite structure is changed more. Therefore, the invention has the advantage of high electric field detection sensitivity.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of an electric field detection device based on a double-layer noble metal micro-nano structure.
Fig. 2 is a schematic diagram of a first noble metal micro-nano structure layer.
Fig. 3 is a schematic diagram of a second noble metal micro-nano structure layer.
Fig. 4 is a schematic diagram of another electric field detection device based on a double-layer noble metal micro-nano structure.
In the figure: 1. a base layer; 2. a heating section; 3. a first noble metal micro-nano structure layer; 4. an organic conjugated polymer material portion; 5. a second noble metal micro-nano structure layer; 6. a first force application part; 7. a second force application part; 31. a first nanorod; 51. a second nanorod.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments, structural features and effects of the present invention will be made with reference to the accompanying drawings and examples.
Example 1
The invention provides an electric field detection device based on a double-layer noble metal micro-nano structure, which comprises a substrate layer 1, a heating part 2, a first noble metal micro-nano structure layer 3, an organic conjugated polymer material part 4, a second noble metal micro-nano structure layer 5, a first force application part 6 and a second force application part 7 as shown in figure 1. The surface of the substrate layer 1 is provided with a pit, the heating part 2 is arranged in the pit, and the surface of the heating part 4 is flush with the surface of the substrate layer 1. The base layer 1 is made of a heat insulating material for insulating heat generated by the heating unit 2. The heating part 2 may generate a high temperature by a method of connecting other high temperature objects, or may generate a high temperature by generating heat through a resistance, and is not particularly limited herein. The first noble metal micro-nano structure layer 3 is fixed on the surface of the heating part 2. When the method is applied, the position of the first noble metal micro-nano structure layer 3 is not changed. The organic conjugated polymer material part 4 is arranged on the first noble metal micro-nano structure layer 3 and the substrate layer 1. That is, the organic conjugated polymer material portion 4 covers the first noble metal micro-nano structure layer 3. The material of the organic conjugated polymer material portion 4 is poly-3-hexylthiophene. When the electric field is heated, the micro appearance of the poly-3-hexylthiophene is easier to be regulated and controlled by the electric field to be measured. The second noble metal micro-nano structure layer 5 is arranged on the surface of the organic conjugated polymer material part 4 at the top of the first noble metal micro-nano structure layer 3. The first force application part 6 and the second force application part 7 are respectively arranged at two sides of the heating part 2 on the substrate layer 1, and the first force application part 6 and the second force application part 7 are respectively fixedly connected at two ends of the organic conjugated polymer material part 4. The first noble metal micro-nano structure layer 3 and the second noble metal micro-nano structure layer 5 form a chiral composite structure. Specifically, as shown in fig. 2, the first noble metal micro-nano structure layer 3 includes a plurality of first nanorods 31, and the first nanorods 31 are periodically arranged; as shown in fig. 3, the second noble metal micro-nano structure layer 5 includes a plurality of second nanorods 51, and the second nanorods 51 are periodically arranged. The first nanorods 31 and the second nanorods 51 are arranged in the same period and are both square. The material of the first nanorods 31 and the second nanorods 51 is gold or silver so as to generate localized surface plasmon resonances on the first nanorods 31 and the second nanorods 51. The first nanorods 31 and the second nanorods 51 are the same in size in order to generate a strong circular dichroism signal.
When the method is applied, firstly, in an electric field-free space, fixed pulling force or pressure is applied between the first force application part 6 and the second force application part 7, and circular dichroism of the chiral composite structure is measured, wherein the heating part 2 is at normal temperature; specifically, circularly polarized light is applied to irradiate the chiral composite structure, the scattering spectrum of the chiral composite structure is detected, and circular dichroism of the chiral composite structure is determined through the scattering spectrum. Then, the present invention is placed in an electric field to be measured, while the heating portion 2 is applied to heat the organic conjugated polymer material portion 4, after the heating is continued for a certain period of time, the organic conjugated polymer material portion 4 is cooled, the tension or pressure between the first force application portion 6 and the second force application portion 7 is kept unchanged, the circular dichroism of the chiral composite structure is remeasured, and the electric field to be measured is determined according to the change of the circular dichroism of the front and rear chiral composite structures. The heating is carried out at a temperature of greater than 130 degrees celsius for a time period of greater than 30 minutes to facilitate sufficient modification of the microstructure of the organic conjugated polymer material portion 4. In the heating process, the direction of the molecular chain of the organic conjugated polymer material part 4 is changed by the electric field to be detected, the dielectric environment around the first noble metal micro-nano structure layer 3 and the second noble metal micro-nano structure layer 5 is changed, the position of the second noble metal micro-nano structure layer 5 relative to the first noble metal micro-nano structure layer 3 is changed, and therefore circular dichroism of the chiral composite structure is changed more. Therefore, the invention has the advantage of high electric field detection sensitivity.
In the invention, when the molecular chain direction in the organic conjugated polymer material part 4 is changed, the dielectric environment around the first nanorod 31 and the second nanorod 51 is changed, the optical path between the first noble metal micro-nano structure layer 3 and the second noble metal micro-nano structure layer 5 is changed, and the distance of the second noble metal micro-nano structure layer 3 relative to the first noble metal micro-nano structure layer 5 in the horizontal direction is changed, so that the three actions cause the circular dichroism of the chiral composite structure to be changed in a greater degree and more aspects. Therefore, the invention has the advantage of high detection sensitivity.
In addition, the noble metal material is also a good thermal conductor, and can better transfer heat into the organic conjugated polymer material portion 4, thereby changing the directions of molecular chains in the organic conjugated polymer material portion 4 more, thereby changing the circular dichroism of the chiral composite structure more, and realizing electric field detection with higher sensitivity.
Example 2
In example 1, the first nanorod 31 is along the line connecting the first force application part 6 and the second force application part 7. The direction of the second nanorods 51 is perpendicular to the direction of the line connecting the first force application part 6 and the second force application part 7. Thus, the second nanorods 51 move in the lateral direction thereof by the first and second force application parts 6 and 7, and the position of the second nanorods 51 moves, thereby enabling more significant change of circular dichroism of the chiral composite structure, and thus enabling more sensitive electric field detection.
Example 3
On the basis of example 2, the end of the second nanorod 51 is located above the end of the first nanorod. In this way, the first nanorods 31 and the second nanorods 51 more easily form a binding resonance mode, thereby realizing a stronger circular dichroism signal, and thus realizing a more sensitive electric field detection.
Example 4
On the basis of the embodiment 3, as shown in fig. 4, a second organic conjugated polymer material is provided on the second noble metal micro-nano structure layer 5. The second organic conjugated polymer material is the same as the material of the organic conjugated polymer material portion 4. That is, the second noble metal micro-nano structure layer 5 is coated by the organic conjugated polymer material. Therefore, on one hand, the second noble metal micro-nano structure layer 5 is not easily influenced by the external environment, and the interference of the external environment on the local surface plasmon resonance of the second nanorod 51 is avoided; on the other hand, the organic conjugated polymer material can apply a larger force to the second nanorods 51 in the second noble metal micro-nano structure layer 5, so that the second noble metal micro-nano structure layer 5 generates more horizontal movement, the circular dichroism of the chiral composite structure is changed more, and the sensitivity of electric field detection is improved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. An electric field detection device based on a double-layer noble metal micro-nano structure is characterized by comprising a base layer, a heating part, a first noble metal micro-nano structure layer, an organic conjugated polymer material part, a second noble metal micro-nano structure layer, a first force application part and a second force application part, wherein a pit is formed in the surface of the base layer, the heating part is arranged in the pit, the surface of the heating part is flush with the surface of the base layer, the first noble metal micro-nano structure layer is fixed on the heating part, the organic conjugated polymer material part is arranged on the first noble metal micro-nano structure layer and the base layer, the second noble metal micro-nano structure layer is arranged on the surface of the organic conjugated polymer material part at the top of the first noble metal micro-nano structure layer, and the first force application part and the second force application part are respectively arranged on the base layer and on two sides of the heating part, the first force application part and the second force application part are respectively and fixedly connected to two ends of the organic conjugated polymer material part, and the first noble metal micro-nano structure layer and the second noble metal micro-nano structure layer form a chiral composite structure.
2. The electric field detection device based on the double-layer precious metal micro-nano structure as claimed in claim 1, wherein: the material of the organic conjugated polymer material part is poly-3-hexylthiophene.
3. The electric field detection device based on the double-layer precious metal micro-nano structure as claimed in claim 2, wherein: the first noble metal micro-nano structure layer comprises a plurality of first nanorods, and the first nanorods are periodically arranged; the second noble metal micro-nano structure layer comprises a plurality of second nanorods, and the second nanorods are periodically arranged.
4. The electric field detection device based on the double-layer noble metal micro-nano structure as claimed in claim 3, wherein: the period is square.
5. The electric field detection device based on the double-layer noble metal micro-nano structure as claimed in claim 4, wherein: the first nanorod is along the direction of a connecting line of the first force application part and the second force application part.
6. The electric field detection device based on the double-layer precious metal micro-nano structure of claim 5, wherein: the direction of the second nanorod is perpendicular to the direction of a connecting line of the first force application part and the second force application part.
7. The electric field detection device based on the double-layer noble metal micro-nano structure as claimed in claim 6, wherein: the end of the second nanorod is located above the end of the first nanorod.
8. The electric field detection device based on the double-layer precious metal micro-nano structure according to any one of claims 1 to 7, wherein: the first nanorod and the second nanorod are made of gold or silver.
9. The electric field detection device based on the double-layer precious metal micro-nano structure of claim 8, wherein: and a second organic conjugated polymer material is arranged on the second noble metal micro-nano structure layer.
10. The electric field detection device based on the double-layer noble metal micro-nano structure as claimed in claim 9, wherein: the second organic conjugated polymer material is the same as the material of the organic conjugated polymer material portion.
CN202011305855.7A 2020-11-20 2020-11-20 Electric field detection device based on double-layer precious metal micro-nano structure Withdrawn CN112415275A (en)

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CN202011305855.7A CN112415275A (en) 2020-11-20 2020-11-20 Electric field detection device based on double-layer precious metal micro-nano structure

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Application Number Priority Date Filing Date Title
CN202011305855.7A CN112415275A (en) 2020-11-20 2020-11-20 Electric field detection device based on double-layer precious metal micro-nano structure

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Application publication date: 20210226