Surface field enhancement assisted container

Abstract

The application relates to the technical field of sample concentration content detection, in particular to a surface field enhancement auxiliary container. The container comprises a container main body, a containing cavity is formed in the container main body, an electric connection end is arranged on the outer side of the container main body and extends into the containing cavity, a metal plating layer is arranged on the inner wall surface of the containing cavity, a spiral thread structure is formed on the metal plating layer, and the metal plating layer is electrically connected with the electric connection end. During detection, the power supply is connected, the metal plating layer surface accumulates charges due to the tip discharge effect, the charges are dynamically moved due to the skin effect, the size of the original electrostatic field is increased, a secondary field is enhanced for the sample small particles and molecules in the vicinity, the amplification of the weak signal details is increased, the metal surface thread structure is further increased in the effective action area on the basis of the original thread structure, and the signal is amplified by about 3 orders of magnitude on the basis of the traditional field enhancement effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sample concentration content detection, and particularly relates to a surface field enhancement auxiliary container. BACKGROUND

[0002] In a traditional Raman detection mode, a solution sample is detected, a same quantitative mode (one of equal incident laser and equal solution) is used to detect different concentration samples, and the content of effective substances in the solution sample is further judged by signal light intensity. In an actual detection process, with further reduction of the sample concentration, the signal light intensity is weak or cannot be detected, leading to increased error. Traditional chips are mainly of a planar line type or a sprayed particle type and have certain enhancement effect. However, there are limitations for ultra-low sample concentration. In order to realize signal enhancement comparison, an active comparison mode is introduced, and a comparison dimension signal is added to the quantitative process, and therefore an auxiliary device for enhancing the surface field signal needs to be designed. SUMMARY

[0003] The present application provides a surface field enhancement auxiliary container to solve the problem of weak signal intensity caused by extremely low content of effective substances in a solution sample in the prior art.

[0004] To solve the above problem, the present application provides a surface field enhancement auxiliary container, comprising:

[0005] A container body, a receiving cavity is formed in the container body, an electric terminal is arranged on the outer side of the container body, and the electric terminal extends into the receiving cavity through the container body;

[0006] A metal plating layer is arranged on the inner wall surface of the receiving cavity, a spiral thread structure is formed in the metal plating layer, and the metal plating layer is electrically connected with the electric terminal.

[0007] In a preferred embodiment, the metal plating layer is made of one of gold, silver and gold-silver alloy.

[0008] In a preferred embodiment, the container body is made of one of ceramic and silicon.

[0009] In a preferred embodiment, the spiral saw teeth of the spiral thread structure are acute angle saw teeth.

[0010] In a preferred embodiment, the spiral thread structure is a clockwise spiral thread structure or a counterclockwise spiral thread structure.

[0011] In a preferred embodiment, a centering spiral thread structure is formed in the bottom of the receiving cavity.

[0012] In a preferred embodiment, the accommodating cavity is in a semi-elliptical groove structure.

[0013] The present application has the following advantages: the present application provides a surface field enhancement auxiliary container, which comprises a container body, an accommodating cavity is formed on the container body, a metal plating layer is arranged in the accommodating cavity, a spiral structure is formed on the metal plating layer, an inter-electrode current field can be generated on the metal plating layer after the power supply is connected, the surface current is further enhanced, the charge accumulation formed by the skin effect of the spiral sharp tip, when the light is irradiated, the weak light signal near the near field is amplified twice when the effective substance in the solution sample is measured, the skin enhancement field increases the emission intensity of the secondary signal on the basis of the original, the detailed spiral structure not only increases the number of effective action molecules in unit area, but also increases the effective action area with the incident excitation light field, thereby effectively improving the sensitivity of sample detection, greatly reducing the error caused by low concentration sample detection under the same conditions. The sharp spiral structure combined with the skin effect realizes further enhancement of the Raman signal of the solubility sample. Under the condition that the number of molecules in unit area is certain, the spiral pitch can increase the effective action area of unit molecule; the spiral pitch reduction is beneficial to increase the electric field intensity in the near-field region when power is on. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 The overall structure schematic diagram of the surface field enhancement auxiliary container is shown;

[0016] Figure 2 The local enlarged structure schematic diagram of part A in the above figure is shown; Figure 1

[0017] Figure 3 The structure schematic diagram of the container body side wall section is shown;

[0018] Figure 4 The structure schematic diagram of the accommodating cavity bottom is shown.

[0019] Main element symbol explanation:

[0020] 100-container body; 110-accommodating cavity; 120-electricity connection end; 200-metal plating layer; 210-spiral structure; 220-spiral sawtooth; 230-centering spiral structure. DETAILED DESCRIPTION ​

[0021] Embodiments of the present application will be described in detail below with reference to the drawings, in which like or similar elements or features are denoted by the same or similar reference signs, and the embodiments described below are exemplary only for the purpose of explanations and are not to be understood as limiting the present application.

[0022] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application.

[0023] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0024] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing", and the like should be understood broadly, for example, can be fixed connection, can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under", and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0026] Please refer to Figure 1 andFigure 2 The application provides a surface field enhancement auxiliary container (hereinafter referred to as an auxiliary container), which comprises a container body 100, a containing cavity 110 is formed on the container body 100, an electricity connection end 120 is arranged on the container body 100, a metal plating layer 200 is arranged on the inner wall surface of the containing cavity 110, and a spiral line structure 210 is formed on the metal plating layer 200.

[0027] Specifically, the electricity connection end 120 penetrates through the side wall of the container body 100 and extends into the containing cavity 110 to be electrically connected with the metal plating layer 200, the spiral line structure 210 is formed in a clockwise spiral line structure mode, the container body 100 is made of one of ceramic, silicon, glass, plastic and wood, and the metal plating layer 200 is made of one of gold, silver, gold-silver alloy and other inert metals.

[0028] In use, a solution sample is placed in the containing cavity 110, and then laser irradiation is further performed, and the concentration of the effective substance in the dilute solution sample is determined according to the intensity of the reflected light generated by the incident laser, the application is designed for liquid non-marked field enhancement, and active electronic transmission is adopted, after the metal plating layer 200 is electrified, an electric effect is generated, the inter-electrode current field is modulated by the line interval, further, the electronic accumulation at the tip is formed by the skin effect, the potential difference of the accumulated electrons between different line intervals forms a secondary field enhancement effect, the amplification of the weak signal of details is increased, the sensitivity of the solution sample detection is further improved by about 3 orders of magnitude on the basis of the traditional near-field enhancement effect, the spiral structure skin tip electron accumulation enhancement field increases the effective action area of the unit molecule on the basis of the original, and the number of effective action molecules in the unit area is also increased, and the effective action area of the incident excitation light field is also increased, so that the signal light intensity of the effective substance of the incident laser is amplified when the low-concentration solution sample is detected, and the sensitivity of the solution sample detection is enhanced.

[0029] The auxiliary container has strong effect, and after the three-dimensional line and the light focusing field cooperate with each other, the waste of back Rayleigh light scattering can be reduced, the useful signal is beneficial to be generated, and the action area and the secondary signal enhancement of the sample in the field current circulation interval are effectively increased.

[0030] Please refer to Figure 3 In a preferred embodiment, the spiral sawtooth 220 of the spiral line structure 210 is an acute angle sawtooth, and the acute angle sawtooth structure processed by the line processing further enhances the skin effect of the line electron circulation.

[0031] Please refer to Figure 1 and Figure 4In a preferred embodiment, the helical thread structure 210 is a clockwise helical thread structure, the accommodating cavity 110 is a semi-elliptical groove structure, and a centering helical thread structure 230 is formed in the bottom of the accommodating cavity 110.

[0032] In another embodiment, the accommodating cavity 110 can be a polygonal groove structure, and the helical thread structure 210 can be a counterclockwise helical thread structure, a concentric circular thread structure, or the like.

[0033] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0034] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A surface field enhancement auxiliary container, characterized in that, include: The container body has a receiving cavity, and an electrical terminal is provided on the outside of the container body, which extends through the container body into the receiving cavity. A metal plating layer is disposed on the inner wall surface of the receiving cavity, and the metal plating layer has a spiral pattern. The metal plating layer is electrically connected to the electrical terminal. The spiral teeth of the spiral pattern are acute-angled serrations. The spiral pattern is either a clockwise spiral pattern or a counterclockwise spiral pattern. The bottom of the receiving cavity is provided with a centering helical pattern, which further enhances the Raman signal.

2. The surface field enhancement auxiliary container according to claim 1, characterized in that, The metal plating is made of one of the following materials: gold, silver, or a gold-silver alloy.

3. The surface field enhancement auxiliary container according to claim 1, characterized in that, The container body is made of one of the following materials: ceramic, silicon, glass, plastic, or wood.

4. The surface field enhancement auxiliary container according to claim 1, characterized in that, The receiving cavity is formed by a semi-ellipsoidal groove structure.

Images