CN112526231A - Electric field detection device based on local surface plasmon resonance regulation - Google Patents
Electric field detection device based on local surface plasmon resonance regulation Download PDFInfo
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- CN112526231A CN112526231A CN202011267387.9A CN202011267387A CN112526231A CN 112526231 A CN112526231 A CN 112526231A CN 202011267387 A CN202011267387 A CN 202011267387A CN 112526231 A CN112526231 A CN 112526231A
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- noble metal
- electric field
- surface plasmon
- plasmon resonance
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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 local surface plasmon resonance regulation and control, which comprises a substrate layer, a heating layer, a noble metal layer and an organic conjugated polymer material, wherein the heating layer is arranged on the substrate layer, the noble metal layer is arranged on the heating layer, the noble metal layer comprises noble metal units which are periodically arranged, and the organic conjugated polymer material covers the noble metal layer. 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 local surface plasmon resonance regulation.
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 local surface plasmon resonance regulation and control, which comprises a substrate layer, a heating layer, a precious metal layer and an organic conjugated polymer material, wherein the heating layer is arranged on the substrate layer, the precious metal layer is arranged on the heating layer, the precious metal layer comprises precious metal units which are periodically arranged, and the organic conjugated polymer material covers the precious metal layer.
Further, the organic conjugated polymer material is poly-3-hexylthiophene.
Further, the noble metal unit has a cylindrical or rectangular parallelepiped shape.
Furthermore, the top center of the noble metal unit is provided with a pit.
Further, the depth of the dimples is less than the height of the noble metal units.
Further, the noble metal unit includes a first noble metal part and a second noble metal part with a gap provided therebetween.
Further, the width of the gap is less than 100 nanometers.
Further, the height of the gap is greater than 200 nanometers.
Further, the material of the noble metal unit is gold or silver.
Further, the period is a square period.
The invention has the beneficial effects that: the invention provides an electric field detection device based on local surface plasmon resonance regulation and control, which comprises a substrate layer, a heating layer, a noble metal layer and an organic conjugated polymer material, wherein the heating layer is arranged on the substrate layer, the noble metal layer is arranged on the heating layer, the noble metal layer comprises noble metal units which are periodically arranged, and the organic conjugated polymer material covers the noble metal layer. When the method is applied, firstly, the local surface plasmon resonance wavelength of the noble metal unit is measured in a space without an electric field; then, the invention is placed in the electric field space to be measured, the organic conjugated polymer material is heated by the heating layer at the same time, after the heating is continued for a period of time, the organic conjugated polymer material is cooled, the local surface plasmon resonance wavelength of the noble metal units is measured again, and the electric field to be measured is determined according to the change of the local surface plasmon resonance wavelength of the front noble metal unit and the back noble metal unit. 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 dielectric environment around the noble metal unit is changed, and the local surface plasmon resonance wavelength of the noble metal unit is changed. When heating, the molecular chain direction of the organic conjugated polymer material depends heavily on the electric field at the position of the organic conjugated polymer material, and the local surface plasmon resonance characteristic of the noble metal unit depends heavily on the surrounding environment, so 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 local surface plasmon resonance regulation.
FIG. 2 is a schematic diagram of another electric field detection device based on local surface plasmon resonance regulation.
FIG. 3 is a schematic diagram of another electric field detection device based on local surface plasmon resonance modulation.
In the figure: 1. a base layer; 2. a heating layer; 3. a noble metal unit; 4. an organic conjugated polymer material; 31. a first noble metal section; 32. a second noble metal portion.
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 local surface plasmon resonance regulation. As shown in FIG. 1, the electric field detection device based on local surface plasmon resonance control comprises a substrate layer 1, a heating layer 2, a noble metal layer and an organic conjugated polymer material 4. 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. 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 noble metal layer is disposed on the heating layer 2. The noble metal layer includes noble metal elements 3 arranged periodically. The period of the noble metal unit 3 is a square period. The noble metal unit 3 has a cylindrical or rectangular parallelepiped shape. The material of the noble metal unit 3 is gold or silver. The organic conjugated polymer material 4 covers the noble metal layer, i.e. not only is the organic conjugated polymer material 4 provided between the noble metal units 3, but also the organic conjugated polymer material 4 is provided on top of the noble metal units 3. The organic conjugated polymer material 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.
When the method is applied, firstly, the local surface plasmon resonance wavelength of the noble metal unit 3 is measured in a space without an electric field, and at the moment, the heating layer 2 is at normal temperature; specifically, the noble metal layer is irradiated by continuous spectrum laser, the scattering spectrum of the noble metal layer is detected, and the local surface plasmon resonance wavelength of the noble metal unit 3 is determined through the scattering spectrum; then, the invention is placed in the electric field space to be measured, the heating layer 2 heats the organic conjugated polymer material 4, after heating is continued for a period of time, the organic conjugated polymer material 4 is cooled, the local surface plasmon resonance wavelength of the noble metal unit 3 is measured again, and the electric field to be measured is determined according to the change of the local surface plasmon resonance wavelength of the front noble metal unit and the back noble metal unit 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 organic conjugated polymeric material 6. In the heating process, the electric field to be measured changes the direction of the molecular chain of the organic conjugated polymer material 4, so that the dielectric environment around the noble metal unit 3 is changed, and the local surface plasmon resonance wavelength of the noble metal unit 3 is changed. Because the molecular chain direction of the organic conjugated polymer material 4 is heavily dependent on the electric field at the position thereof and the local surface plasmon resonance characteristics of the noble metal unit 3 are heavily dependent on the surrounding environment during heating, the present invention has the advantage of high electric field detection sensitivity.
In the present invention, on the one hand, the local surface plasmon resonance characteristics of the noble metal unit 3 are heavily dependent on its surroundings; on the other hand, the noble metal unit 3 is a good conductor of heat, and can well transfer heat to the organic conjugated polymer material 4, thereby changing the direction of molecular chains in the organic conjugated polymer material 4 more. Both effects are favorable for changing the local surface plasmon resonance characteristics of the noble metal unit 3 more, thereby realizing electric field detection with higher sensitivity.
Example 2
In addition to example 1, as shown in fig. 2, a dimple is provided in the center of the top of the noble metal unit 3. The depth of the pits is less than the height of the noble metal unit 3. Thus, the contact area between the noble metal unit 3 and the organic conjugated polymer material 4 is larger, and when the direction of the molecular chains in the organic conjugated polymer material 4 is changed, the local surface plasmon resonance wavelength of the noble metal unit 3 moves more, thereby realizing electric field detection with higher sensitivity.
Example 3
In addition to example 1, as shown in fig. 3, the noble metal unit 3 includes a first noble metal part 31 and a second noble metal part 32, and a gap is provided between the first noble metal part 31 and the second noble metal part 32. In this way, not only the organic conjugated polymer material 4 is coated outside the noble metal unit 3, but also the organic conjugated polymer material 4 fills the gap between the first noble metal part 31 and the second noble metal part 32. The coupling between the first noble metal section 31 and the second noble metal section 32 is heavily dependent on the refractive index of the substance in the gap. In the present embodiment, the electric field changes the molecular chain direction in the organic conjugated polymer material 4, which will seriously change the coupling between the first noble metal part 31 and the second noble metal part 32, thereby significantly shifting the local surface plasmon resonance wavelength of the dimer constituted by the first noble metal part 31 and the second noble metal part 32, thereby achieving higher sensitivity of electric field detection.
Further, the width of the gap is less than 100 nm to enhance the coupling between the first noble metal part 31 and the second noble metal part 32, and improve the influence of the microstructure change of the organic conjugated polymer material 4 on the local surface plasmon resonance wavelength of the dimer structure, thereby improving the sensitivity of electric field detection.
Furthermore, the height of the gap is larger than 200 nanometers to increase the acting distance between the incident light and the dimer structure, thereby improving the influence of the microstructure change of the organic conjugated polymer material 4 on the local surface plasmon resonance wavelength of the dimer structure and further improving the sensitivity of electric field detection.
Further, the first noble metal part 31 and the second noble metal part 32 are offset. As such, the direction of the molecular chains in the organic conjugated polymer material 4 more seriously affects the coupling between the first noble metal part 31 and the second noble metal part 32, thereby achieving higher sensitivity of electric field detection.
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 local surface plasmon resonance regulation and control which characterized in that, includes stratum basale, zone of heating, noble metal layer, organic conjugated polymer material, the zone of heating is arranged in on the stratum basale, noble metal layer is arranged in on the zone of heating, noble metal layer includes the noble metal unit of periodic arrangement, organic conjugated polymer material covers noble metal layer.
2. The local surface plasmon resonance-based electric field detection apparatus of claim 1, wherein: the organic conjugated polymer material is poly-3-hexylthiophene.
3. The local surface plasmon resonance-based electric field detection apparatus of claim 2, wherein: the noble metal unit is cylindrical or cuboid.
4. The local surface plasmon resonance based electric field detection apparatus of claim 3 wherein: and a concave pit is arranged at the center of the top of the noble metal unit.
5. The local surface plasmon resonance based electric field detection apparatus of claim 4, wherein: the depth of the pits is less than the height of the noble metal units.
6. The local surface plasmon resonance based electric field detection apparatus of claim 3 wherein: the noble metal unit includes a first noble metal part and a second noble metal part with a gap therebetween.
7. The local surface plasmon resonance based electric field detection apparatus of claim 6, wherein: the width of the gap is less than 100 nanometers.
8. The local surface plasmon resonance based electric field detection apparatus of claim 7 wherein: the height of the gap is greater than 200 nanometers.
9. The local surface plasmon resonance based electric field detection apparatus of any of claims 1-8, wherein: the material of the noble metal unit is gold or silver.
10. The local surface plasmon resonance based electric field detection apparatus of claim 9, wherein: the period is a square period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267387.9A CN112526231A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on local surface plasmon resonance regulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011267387.9A CN112526231A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on local surface plasmon resonance regulation |
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| CN112526231A true CN112526231A (en) | 2021-03-19 |
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| CN202011267387.9A Withdrawn CN112526231A (en) | 2020-11-13 | 2020-11-13 | Electric field detection device based on local surface plasmon resonance regulation |
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- 2020-11-13 CN CN202011267387.9A patent/CN112526231A/en not_active Withdrawn
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Application publication date: 20210319 |
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