Solar-thermal conversion system based on biological fine structure and surface plasma resonance effect

A surface plasmon and light-to-heat conversion technology, which is applied in solar heating systems, ion implantation coating, steam generation, etc., can solve the problems of low light-to-heat conversion efficiency, small irradiation area, and fast thermal energy diffusion, and achieve good light-to-heat effects, Obvious effect of photothermal effect

Inactive Publication Date: 2017-12-01
CRRC IND INST CO LTD +1
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  • Claims
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Problems solved by technology

However, due to the small actual irradiated area and fast thermal energy diffusion of directly irradiated liquids, the light-to-heat conversion efficiency is extremely low, and it cannot be put into practical applications.

Method used

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  • Solar-thermal conversion system based on biological fine structure and surface plasma resonance effect
  • Solar-thermal conversion system based on biological fine structure and surface plasma resonance effect
  • Solar-thermal conversion system based on biological fine structure and surface plasma resonance effect

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Embodiment 1

[0028] Choose natural Morpho butterfly wings ( figure 1 Part a) is a template, which is dried after immersing in 10% dilute nitric acid for 2 hours ( figure 1 In b), after activation, it was further put into the electroless silver plating solution for 20 minutes. The electroless silver plating solution consisted of 1g silver nitrate, 2mL ammonia water, 5g potassium sodium tartrate, and 100mL deionized water. After washing with deionized water and drying in vacuum, the metal material with fine hierarchical structure of biological form was obtained ( figure 1 of c, where rib / ridge is a protruding ridge structure). The thickness of the layer of noble metal particles coated on the surface is about 40nm observed by SEM.

[0029] Take the back of the dried silver butterfly wing material and connect it with a carbon paper of similar size with a water-insoluble solid adhesive (commercially available waterproof adhesive) to obtain a high-efficiency light-to-heat conversion system bas...

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Abstract

The invention provides a solar-thermal conversion system based on a biological fine structure and a surface plasma resonance effect. The solar-thermal conversion system comprises a metal material with the biological form fine graded structure and a heat absorption material; and the metal material with the biological form fine graded structure is pasted to one side of the heat absorption material. By combining the localized surface plasma resonance effect of precious metal, the precious metal with a three-dimensional periodical structure is selected. Under the action of electromagnetic waves, coordinating fluctuation of electrons inside the metal micro-nano structure will generate the surface plasma resonance effect on the surface in an excitation mode, so that a local electromagnetic field of the metal surface is enhanced, the optical effects like light gathering, light waveguide, light enhancement and light storage can be generated within the sub-wavelength range, and the good photothermal effect is achieved.

Description

technical field [0001] The invention belongs to the field of light-to-heat conversion materials, in particular to a light-to-heat conversion system with surface plasmon resonance effect. Background technique [0002] Liquid evaporation is of great importance for many fundamental processes and industrial applications. The current research on liquid evaporation is mainly based on two issues. One is the choice of the driving force of evaporation, that is, the energy source. Since evaporation is an endothermic process, it must have external energy supply to make the evaporation continue. Therefore, the choice of energy source is very important. important. The other is the energy conversion efficiency in the evaporation process, which is also the core issue in the study of evaporation. For a power station using high-pressure steam to generate electricity, an efficient evaporation process can greatly improve the production efficiency of the entire system, and thus save a lot of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/00F24J2/48C23C14/34C23C14/20C23C18/44F22B1/00
CPCC23C14/205C23C14/34C23C18/44F22B1/006F24S21/00F24S70/10F24S2023/88Y02E10/40
Inventor 顾佳俊章潇慧孙诚祝弘滨刘佰博张丽娇张荻
Owner CRRC IND INST CO LTD
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