CN112485544A - Electric field detection device based on surface plasmon coupling - Google Patents
Electric field detection device based on surface plasmon coupling Download PDFInfo
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- CN112485544A CN112485544A CN202011265678.4A CN202011265678A CN112485544A CN 112485544 A CN112485544 A CN 112485544A CN 202011265678 A CN202011265678 A CN 202011265678A CN 112485544 A CN112485544 A CN 112485544A
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- noble metal
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- electric field
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- 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 surface plasmon coupling, which comprises a substrate layer, a heating layer, a noble metal layer, an organic conjugated polymer material layer and a noble metal micro-nano structure layer, wherein the heating layer is arranged on the substrate layer, the noble metal layer is arranged on the heating layer, the organic conjugated polymer material layer is arranged on the noble metal layer, the noble metal micro-nano structure layer is arranged on the organic conjugated polymer material layer, and the noble metal micro-nano structure layer comprises noble metal micro-nano structure units which are periodically arranged. 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 surface plasmon coupling.
Background
The measurement of the electric field has great significance for launching missiles, rockets and aircrafts, and also has wide application in places which are easy to cause static electricity and are easy to be damaged by static electricity and radars on the ground, such as urban environmental pollution, ultra-clean laboratories, oil refineries, 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 surface plasmon coupling, which comprises a substrate layer, a heating layer, a noble metal layer, an organic conjugated polymer material layer and a noble metal micro-nano structure layer, wherein the heating layer is arranged on the substrate layer, the noble metal layer is arranged on the heating layer, the organic conjugated polymer material layer is arranged on the noble metal layer, the noble metal micro-nano structure layer is arranged on the organic conjugated polymer material layer, and the noble metal micro-nano structure layer comprises noble metal micro-nano structure units which are periodically arranged.
Furthermore, the material of the organic conjugated polymer material layer is poly-3-hexylthiophene.
Furthermore, the noble metal micro-nano structure unit is a cuboid, a cube, a cylinder or a sphere.
Further, the material of the noble metal layer is gold or silver.
Furthermore, the material of the noble metal micro-nano structure unit is gold or silver.
Further, the period is a square period.
Furthermore, a bulge is arranged on the noble metal layer at the bottom of the noble metal micro-nano structure unit.
Further, the distance between the top of the protrusion and the noble metal micro-nano structure unit is less than 50 nanometers.
Furthermore, a groove is formed in the noble metal layer at the bottom of the noble metal micro-nano structure unit.
Furthermore, the width of the groove is smaller than that of the noble metal micro-nano structure unit.
The invention has the beneficial effects that: the invention provides an electric field detection device based on surface plasmon coupling, which comprises a substrate layer, a heating layer, a noble metal layer, an organic conjugated polymer material layer and a noble metal micro-nano structure layer, wherein the heating layer is arranged on the substrate layer, the noble metal layer is arranged on the heating layer, the organic conjugated polymer material layer is arranged on the noble metal layer, the noble metal micro-nano structure layer is arranged on the organic conjugated polymer material layer, and the noble metal micro-nano structure layer comprises noble metal micro-nano structure units which are periodically arranged. When the method is applied, firstly, in a space without an electric field, measuring the surface plasmon resonance wavelength of the noble metal micro-nano structure unit and the noble metal layer composite structure, wherein the heating layer is at normal temperature; then, the method is placed in an electric field to be tested, meanwhile, the heating layer heats the organic conjugated polymer material layer through the noble metal layer, after the heating is continued for a period of time, the organic conjugated polymer material layer is cooled, the surface plasmon resonance wavelength of the noble metal micro-nano structure unit and the noble metal layer composite structure is measured again, and the electric field to be tested is determined according to the movement of the surface plasmon resonance wavelength of the front noble metal micro-nano structure unit and the back noble metal layer composite structure. In the heating process, the direction of the molecular chain of the organic conjugated polymer material is changed by the electric field to be detected, so that the coupling between the noble metal micro-nano structure unit and the noble metal layer is changed, and the resonance wavelength of the composite structure of the noble metal micro-nano structure unit and the noble metal layer is changed. When the organic conjugated polymer material is heated, the direction of the molecular chain of the organic conjugated polymer material depends heavily on the electric field in which the organic conjugated polymer material is positioned, and the coupling between the noble metal micro-nano structure unit and the noble metal layer depends heavily on the dielectric environment between the noble metal micro-nano structure unit and the noble metal layer, so that the organic conjugated polymer material 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 surface plasmon coupling.
FIG. 2 is a schematic diagram of another electric field detection device based on surface plasmon coupling.
FIG. 3 is a schematic diagram of another electric field detection device based on surface plasmon coupling.
In the figure: 1. a base layer; 2. a heating layer; 3. a noble metal layer; 4. a layer of organic conjugated polymer material; 5. a noble metal micro-nano structure unit; 6. a protrusion; 7. and (4) a groove.
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 surface plasmon coupling. As shown in fig. 1, the electric field detection device based on surface plasmon coupling includes a substrate layer 1, a heating layer 2, a noble metal layer 3, an organic conjugated polymer material layer 4, and a noble metal micro-nano structure layer 5. Heating layer 2 is disposed on substrate layer 1. The material of the substrate layer 1 is a heat insulating material for insulating heat generated by the heating layer 2. A noble metal layer 3 is disposed on the heating layer 2. The material of the noble metal layer 3 is gold or silver. The heating layer 2 may generate a high temperature by a method of connecting other high temperature objects, and may also generate a high temperature by generating heat through a resistor, which is not particularly limited herein. The organic conjugated polymer material layer 4 is arranged on the noble metal layer 3, and the noble metal micro-nano structure layer is arranged on the organic conjugated polymer material layer 4. The noble metal micro-nano structure layer comprises noble metal micro-nano structure units 5 which are arranged periodically. The period of the noble metal micro-nano structure units 5 is a square or rectangular period. The noble metal micro-nano structure unit 5 is a cuboid, a cube, a cylinder or a sphere. The material of the noble metal micro-nano structure unit 5 is gold or silver. The material of the organic conjugated polymer material layer 4 is an organic conjugated polymer material. Preferably, the organic conjugated polymer material 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.
When the method is applied, firstly, in a space without an electric field, the surface plasmon resonance wavelength of the composite structure of the noble metal micro-nano structure unit 5 and the noble metal layer 3 is measured, and at the moment, the heating layer 2 is at normal temperature; specifically, continuous spectrum laser is applied to irradiate the noble metal micro-nano structure layer, the noble metal micro-nano structure layer scatters incident laser, and the surface plasmon resonance wavelength of the composite structure of the noble metal micro-nano structure unit 5 and the noble metal layer 3 is determined by detecting the scattering spectrum of the noble metal micro-nano structure layer; then, the method is placed in an electric field to be tested, meanwhile, the heating layer 2 heats the organic conjugated polymer material layer 4 through the noble metal layer 3, after the heating lasts for a period of time, the organic conjugated polymer material layer 4 is cooled, the surface plasmon resonance wavelength of the composite structure of the noble metal micro-nano structure unit 5 and the noble metal layer 3 is measured again, and the electric field to be tested is determined according to the movement of the surface plasmon resonance wavelength of the composite structure of the front noble metal micro-nano structure unit 5 and the noble metal layer 3. The heating is carried out at a temperature greater than 130 degrees celsius for a time greater than 30 minutes to facilitate sufficient modification of the microstructure of the layer of organic conjugated polymer material 4. In the heating process, the direction of the molecular chain of the organic conjugated polymer material is changed by the electric field to be detected, so that the coupling between the noble metal micro-nano structure unit 5 and the noble metal layer 3 is changed, and the resonance wavelength of the composite structure of the noble metal micro-nano structure unit 5 and the noble metal layer 3 is changed. Because the direction of the molecular chain of the organic conjugated polymer material is seriously dependent on the electric field in which the organic conjugated polymer material is positioned during heating, and the coupling between the noble metal micro-nano structure unit 5 and the noble metal layer 3 is seriously dependent on the dielectric environment between the noble metal micro-nano structure unit and the noble metal layer, the invention has the advantage of high electric field detection sensitivity.
In the invention, the coupling of the noble metal layer 3 and the noble metal micro-nano structure unit 5 is adjusted by the electric field to be measured through the organic conjugated polymer material layer 4. That is, the noble metal layer 3 is used to change the surface plasmon resonance wavelength. On the other hand, the noble metal layer 3 has good thermal conductivity, and therefore the heating layer 2 can be disposed on the lower side of the noble metal layer 3, thereby making the structure preparation and testing simple.
Example 2
In addition to example 1, as shown in fig. 2, a protrusion 6 is provided on the noble metal layer 3 at the bottom of the noble metal micro-nano structure unit 5. The material of the bump 6 is the same as that of the noble metal layer 3. Therefore, a narrower gap is formed between the protrusion 6 and the noble metal micro-nano structure unit 5, and the coupling between the noble metal micro-nano structure unit 5 and the noble metal layer 3 is more seriously influenced by the direction of the molecular chain of the organic conjugated polymer material in the gap, so that the surface plasmon resonance wavelength of the composite structure of the noble metal micro-nano structure unit 5 and the noble metal layer 3 is more seriously changed, and the electric field detection with higher sensitivity is realized.
Furthermore, the distance between the top of the protrusion 6 and the noble metal micro-nano structure unit 5 is less than 50 nanometers, so that the coupling between the noble metal micro-nano structure unit 5 and the noble metal layer 3 is further enhanced, and the sensitivity of electric field detection is improved.
Example 3
In addition to embodiment 1, as shown in fig. 3, a groove 7 is provided in the noble metal layer 3 at the bottom of the noble metal micro-nano structure unit 5. The grooves 7 are also provided with organic conjugated polymer material. In this way, the strong electric field is concentrated not only between the noble metal micro-nano structure unit 5 and the noble metal layer 3, but also within the groove 7. Because the region where the groove 7 is located is communicated with the gap between the noble metal micro-nano structure unit 5 and the noble metal layer 3, the change of the molecular chain direction of the organic conjugated polymer material has larger influence on the surface plasmon resonance of the composite structure of the noble metal micro-nano structure unit 5 and the noble metal layer 3, thereby realizing electric field detection with higher sensitivity.
Further, the width of the groove 7 is smaller than that of the noble metal micro-nano structure unit 5, and the groove 7 is aligned with the middle of the noble metal micro-nano structure unit 5. When surface plasmon resonance occurs, a strong electric field is more concentrated in the gaps between the noble metal micro-nano structure units 5 and the noble metal layer 3 and in the grooves 7. Therefore, the molecular chain direction of the organic conjugated polymer material has more serious influence on surface plasmon resonance, and the electric field detection with higher sensitivity is realized. Further, the groove 7 does not penetrate the noble metal layer 3, the width of the groove 7 is less than 20 nm, and the depth of the groove 7 is less than 60 nm, so as to collect a strong electric field in the groove.
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. The utility model provides an electric field detection device based on surface plasmon coupling, its characterized in that, includes stratum basale, zone of heating, noble metal layer, organic conjugated polymer material layer, noble metal micro-nano structure layer, the zone of heating is arranged in on the stratum basale, the noble metal layer is arranged in on the zone of heating, organic conjugated polymer material layer is arranged in on the noble metal layer, noble metal micro-nano structure layer is arranged in on the organic conjugated polymer material layer, the noble metal micro-nano structure layer includes periodic arrangement's noble metal micro-nano structure unit.
2. The surface plasmon coupling-based electric field sensing apparatus of claim 1, wherein: the material of the organic conjugated polymer material layer is poly-3-hexylthiophene.
3. The surface plasmon coupling-based electric field sensing apparatus of claim 2, wherein: the noble metal micro-nano structure unit is a cuboid, a cube, a cylinder or a sphere.
4. The surface plasmon coupling-based electric field sensing apparatus of claim 3, wherein: the material of the noble metal layer is gold or silver.
5. The surface plasmon coupling-based electric field detection apparatus of claim 4 wherein: the material of the noble metal micro-nano structure unit is gold or silver.
6. The surface plasmon coupling-based electric field detection apparatus of claim 5 wherein: the period is a square period.
7. The surface plasmon coupling-based electric field detection apparatus of any of claims 1-6 wherein: and the bottom of the noble metal micro-nano structure unit is provided with a bulge on the noble metal layer.
8. The surface plasmon coupling-based electric field sensing apparatus of claim 7, wherein: the distance between the top of the protrusion and the noble metal micro-nano structure unit is less than 50 nanometers.
9. The surface plasmon coupling-based electric field detection apparatus of any of claims 1-6 wherein: and a groove is arranged in the noble metal layer at the bottom of the noble metal micro-nano structure unit.
10. The surface plasmon coupling-based electric field sensing apparatus of claim 9, wherein: the width of the groove is smaller than that of the noble metal micro-nano structure unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011265678.4A CN112485544A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on surface plasmon coupling |
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| CN202011265678.4A CN112485544A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on surface plasmon coupling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414486A (en) * | 2022-01-19 | 2022-04-29 | 浙江树人学院（浙江树人大学） | Hydrogen detector based on noble metal coupling |
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2020
- 2020-11-13 CN CN202011265678.4A patent/CN112485544A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414486A (en) * | 2022-01-19 | 2022-04-29 | 浙江树人学院（浙江树人大学） | Hydrogen detector based on noble metal coupling |
| CN114414486B (en) * | 2022-01-19 | 2023-08-22 | 浙江树人学院（浙江树人大学） | Hydrogen detector based on noble metal coupling |
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