CN112526236A - Electric field detection device based on noble metal particle spacing change - Google Patents
Electric field detection device based on noble metal particle spacing change Download PDFInfo
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- CN112526236A CN112526236A CN202011305865.0A CN202011305865A CN112526236A CN 112526236 A CN112526236 A CN 112526236A CN 202011305865 A CN202011305865 A CN 202011305865A CN 112526236 A CN112526236 A CN 112526236A
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- noble metal
- metal particles
- electric field
- polymer material
- conjugated polymer
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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
- G01R29/12—Measuring electrostatic fields or voltage-potential
Abstract
The invention provides an electric field detection device based on noble metal particle spacing change, which comprises a substrate layer, a heating part, an organic conjugated polymer material part, noble metal particles, 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 organic conjugated polymer material part is arranged on the heating part and the substrate 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 force application part and the second force application part are respectively and fixedly connected with two ends of the organic conjugated polymer material part, and the noble metal particles are arranged in the organic conjugated polymer material. The invention has the advantage of high electric field detection sensitivity.
Description
Technical Field
The invention relates to the field of electric field detection, in particular to an electric field detection device based on noble metal particle spacing change.
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 above problems, the present invention provides an electric field detection apparatus based on noble metal particle pitch variation, which includes a substrate layer, a heating portion, an organic conjugated polymer material portion, noble metal particles, a first force application portion, and a second force application portion, wherein a recess is formed on a surface of the substrate layer, the heating portion is disposed in the recess, the organic conjugated polymer material portion is disposed on the heating portion and the substrate layer, the first force application portion and the second force application portion are disposed on two sides of the heating portion on the substrate layer, the first force application portion and the second force application portion are fixedly connected to two ends of the organic conjugated polymer material portion, and the noble metal particles are disposed in the organic conjugated polymer material portion.
Further, the material of the organic conjugated polymer material portion is poly-3-hexylthiophene.
Further, the surface of the heating portion is flush with the surface of the base layer.
Further, a noble metal thin film is provided on the heating portion, and an organic conjugated polymer material portion is provided on the noble metal thin film and the base layer.
Still further, the device also comprises a noble metal film, wherein the noble metal film is arranged on the heating layer in the concave pit, the surface of the noble metal film is flush with the surface of the substrate layer, and the organic conjugated polymer material part is arranged on the noble metal film and the substrate layer.
Further, the number of the noble metal particles is plural.
Further, the material of the noble metal particles is gold or silver.
Further, the noble metal particles are spherical in shape.
Still further, the noble metal particles have a diameter of less than 100 nanometers.
The invention has the beneficial effects that: the invention provides an electric field detection device based on noble metal particle spacing change, which comprises a substrate layer, a heating part, an organic conjugated polymer material part, noble metal particles, 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 organic conjugated polymer material part is arranged on the heating part and the substrate 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 force application part and the second force application part are respectively and fixedly connected with two ends of the organic conjugated polymer material part, and the noble metal particles are arranged in the organic conjugated polymer material. When the method is applied, firstly, in a space without an electric field, fixed pulling force or pressure is applied between the first force application part and the second force application part, and the local surface plasmon resonance wavelength of the noble metal particles is measured, wherein the heating part is at normal temperature; then, the method 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 local surface plasmon resonance wavelength of the noble metal particles is measured again, and the electric field to be measured is determined according to the movement of the local surface plasmon resonance wavelengths of the front noble metal particle and the rear noble metal particle. In the heating process, the direction of partial molecular chains of the organic conjugated polymer material is changed by the electric field to be measured, so that not only is the dielectric environment between the noble metal particles changed, but also the distance between the noble metal particles is changed, and the wavelength of the local surface plasmon resonance of the noble metal particles is seriously changed. 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 view of an electric field detection device based on a change in the distance between noble metal particles.
Fig. 2 is a schematic diagram of another electric field detection device based on the change of the distance between noble metal particles.
Fig. 3 is a schematic diagram of another electric field detection device based on the change of the distance between the noble metal particles.
In the figure: 1. a base layer; 2. a heating section; 3. an organic conjugated polymer material portion; 4. noble metal particles; 5. a first force application part; 6. a second force application part; 7. a noble metal thin film.
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 noble metal particle spacing change, which comprises a substrate layer 1, a heating part 2, an organic conjugated polymer material part 3, noble metal particles 4, a first force application part 5 and a second force application part 6 as shown in figure 1. The surface of the base layer 1 is provided with a recess, and the heating part 2 is placed in the recess. 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 surface of the heating part 2 is flush with the surface of the substrate layer 1. The organic conjugated polymer material portion 3 is placed on the heating portion 2 and the base layer 1. The material of the organic conjugated polymer material part 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 first force application part 5 and the second force application part 6 are respectively arranged at two sides of the heating part 2 on the substrate layer 1, and the first force application part 5 and the second force application part 6 are respectively fixedly connected at two ends of the organic conjugated polymer material part 3. The noble metal particles 4 are disposed in the organic conjugated polymer material portion 3. The number of the noble metal particles 4 is plural, and the noble metal particles 4 are periodically arranged in a single layer. The material of the noble metal particles 4 is gold or silver so as to excite localized surface plasmon resonance. The noble metal particles 4 have a spherical, square, elliptical, or star shape. Preferably, the noble metal particles 4 are spherical in shape. The diameter of the noble metal particle 4 is less than 100 nanometers, so that the local surface plasmon resonance wavelength of the noble metal particle 4 is in the visible light region, and the detection is convenient.
When the method is applied, firstly, in a space without an electric field, a fixed pulling force or pressure is applied between the first force application part 5 and the second force application part 6, and the local surface plasmon resonance wavelength of the noble metal particles 4 is measured, wherein the heating part 2 is at normal temperature; specifically, the noble metal particles 4 are irradiated by continuous spectrum laser, the scattering spectrum of the noble metal particles 4 is detected, and the local surface plasmon resonance wavelength of the noble metal particles 4 is determined by 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 3, after the heating is continued for a certain period of time, the organic conjugated polymer material portion 3 is cooled, the tension or pressure between the first force application portion 5 and the second force application portion 6 is kept unchanged, the localized surface plasmon resonance wavelength of the noble metal particle 4 is measured again, and the electric field to be measured is determined according to the movement of the localized surface plasmon resonance wavelength of the noble metal particle 4 before and after the measurement. The heating is performed at a temperature of more than 130 degrees celsius for a time period of more than 30 minutes so that the microstructure of the organic conjugated polymer material portion 3 is sufficiently changed. In the heating process, the direction of the molecular chain of the organic conjugated polymer material part 3 is changed by the electric field to be measured, so that not only is the dielectric environment between the noble metal particles changed, but also the distance between the noble metal particles 4 is changed, and the wavelength of the local surface plasmon resonance of the noble metal particles 4 is seriously changed. Therefore, the invention has the advantage of high electric field detection sensitivity.
In addition, in the present invention, on the one hand, the local surface plasmon resonance characteristics of the noble metal particles 4 are heavily dependent on their surroundings; on the other hand, the noble metal particles are also good thermal conductors, and can favorably transfer heat into the organic conjugated polymer material portion 3, thereby changing the direction of molecular chains in the organic conjugated polymer material portion 3 more. Both effects are favorable for changing the local surface plasmon resonance characteristics of the noble metal particles 4 more, thereby realizing electric field detection with higher sensitivity.
Example 2
In addition to example 1, as shown in fig. 2, the heating apparatus further includes a noble metal thin film 7, the noble metal thin film 7 is provided on the heating portion 2, and the organic conjugated polymer material portion 3 is provided on the noble metal thin film 7 and the base layer 1. At this time, the noble metal particles 4 are not in direct contact with the noble metal thin film 7, and the organic conjugated polymer material is also provided between the noble metal particles 4 and the noble metal thin film 7. The material of the noble metal thin film 7 is gold or silver. As a result, the coupling between the noble metal thin film 7 and the noble metal particles 4 changes the vibrational state of the charge in the noble metal particles 4, which change depends heavily on the effective refractive index of the organic conjugated polymer material between the noble metal particles 4 and the noble metal thin film 7. Therefore, when the direction of the molecular chain of the organic conjugated polymer material portion 3 is changed, not only the coupling between the adjacent noble metal particles 4 but also the coupling between the noble metal particles 4 and the noble metal thin film 7 is affected. When the molecular chain direction of the organic conjugated polymer material portion 3 is changed, the localized surface plasmon resonance wavelength of the noble metal particle 4 is more shifted, thereby realizing electric field detection with higher sensitivity. Further, the thickness of the noble metal film 7 is greater than 100 nanometers and less than 200 nanometers, which not only ensures the coupling between the noble metal particles 4 and the noble metal film 7, but also reduces the heat absorbed by the noble metal film 7, so that the organic conjugated polymer material part 3 absorbs more heat, the temperature of the organic conjugated polymer material part 3 changes more, the direction of the molecular chain of the organic conjugated polymer material part 3 changes more, and the electric field detection with higher sensitivity is realized.
Example 3
In addition to embodiment 1, as shown in fig. 3, a noble metal thin film 7 is further included, the noble metal thin film 7 is disposed on the in-pit heating layer 2, the surface of the noble metal thin film 7 is flush with the surface of the base layer 1, and the organic conjugated polymer material portion 3 is disposed on the noble metal thin film 7 and the base layer 1. This makes it easy to prepare the substrate layer 1, the heating section 2, and the noble metal thin film 7, and to reuse them, in addition to the advantageous effects of example 2. In the preparation process, the heating part 2 is firstly arranged in the pit, then the noble metal material is evaporated in the pit, and then the noble metal material on the substrate layer 1 is polished by a polishing method, so that the noble metal thin film 7 arranged in the pit can be obtained. After the overall structure of the present invention is prepared, if new noble metal particles 4 are needed, the organic conjugated polymer material part 3 doped with the noble metal particles 4 is directly removed, and the substrate layer 1, the heating part 2 and the noble metal thin film 7 can be reused.
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 (9)
1. The electric field detection device based on noble metal particle spacing change is characterized by comprising a substrate layer, a heating part, an organic conjugated polymer material part, noble metal particles, a first force application part and a second force application part, wherein a pit is formed in the surface of the substrate layer, the heating part is arranged in the pit, the organic conjugated polymer material part is arranged on the heating part and the substrate layer, the first force application part and the second force application part are respectively arranged on the substrate layer 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 noble metal particles are arranged in the organic conjugated polymer material part.
2. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 1, wherein: the material of the organic conjugated polymer material part is poly-3-hexylthiophene.
3. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 2, wherein: the surface of the heating part is flush with the surface of the substrate layer.
4. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 3, wherein: the heating part is arranged on the substrate layer, and the organic conjugated polymer material part is arranged on the heating part.
5. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 2, wherein: still include the noble metal film, the noble metal film sets up in the pit on the zone of heating, the surface of noble metal film with the surface of stratum basale flushes, organic conjugated polymer material portion sets up the noble metal film with on the stratum basale.
6. An electric field detection apparatus based on a change in the distance between noble metal particles as set forth in any of claims 1 to 5, wherein: the number of the noble metal particles is plural.
7. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 6, wherein: the material of the noble metal particles is gold or silver.
8. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 7, wherein: the noble metal particles are spherical in shape.
9. The apparatus for detecting an electric field based on the change in the distance between noble metal particles as set forth in claim 8, wherein: the noble metal particles have a diameter of less than 100 nanometers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305865.0A CN112526236A (en) | 2020-11-20 | 2020-11-20 | Electric field detection device based on noble metal particle spacing change |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305865.0A CN112526236A (en) | 2020-11-20 | 2020-11-20 | Electric field detection device based on noble metal particle spacing change |
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| Publication Number | Publication Date |
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| CN112526236A true CN112526236A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011305865.0A Withdrawn CN112526236A (en) | 2020-11-20 | 2020-11-20 | Electric field detection device based on noble metal particle spacing change |
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| Country | Link |
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| CN (1) | CN112526236A (en) |
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2020
- 2020-11-20 CN CN202011305865.0A patent/CN112526236A/en not_active Withdrawn
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Application publication date: 20210319 |
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