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Method and device for manufacturing nanoparticle self-assembled structure

A technology of nanoparticles and production methods, which is applied in the field of nanomaterials and can solve problems such as the inability to precisely control the assembly position of nanoparticles

Pending Publication Date: 2019-01-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the assembly of nanoparticles on the substrate by solvent evaporation cannot precisely control the assembly position of nanoparticles.

Method used

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  • Method and device for manufacturing nanoparticle self-assembled structure
  • Method and device for manufacturing nanoparticle self-assembled structure
  • Method and device for manufacturing nanoparticle self-assembled structure

Examples

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Embodiment 1

[0055] Such as figure 1As shown, the present invention provides a method for making a nanoparticle self-assembled structure, comprising:

[0056] S101, obtaining a substrate provided with hydrophilic regions and hydrophobic regions on the surface;

[0057] S1011, acquire a hydrophobic flexible template with a flat bottom; wherein, the flexible template can be a template made of polydimethylsiloxane PDMS or polymethyl methacrylate PMMA. The flexible template of the present application may also be any template material capable of soft etching.

[0058] S1012. Obtain a flexible template whose bottom is etched with a recess or a hollow area by soft etching technology. specific:

[0059] S1012.1, obtain a silicon template with a microstructure on the surface; the silicon template is a 4-inch wafer, and the microstructure is etched on its surface through photolithography and etching processes; the microstructure can be: according to the specified size Set a single area; set mult...

Embodiment 2

[0070] Such as Figure 4 As shown, the present application also provides a device for making a nanoparticle self-assembled structure, including:

[0071] A substrate 41 with hydrophilic regions and hydrophobic regions on its surface;

[0072] A structure for dropping the colloidal nanoparticle solution onto the substrate (it may be a dropper or a pipette gun, not shown in the figure).

[0073] Through the above device, the nanoparticles form a self-assembled structure in the hydrophilic region, and precise control of the self-assembled position of the nanoparticles can be realized.

[0074] In the manufacturing device of the present application, the manufacturing components of the substrate having a hydrophilic region and a hydrophobic region on the surface include:

[0075] Such as Figure 5 As shown, a bottom is a planar hydrophobic flexible template 51; wherein, the bottom of the template is etched with a depression or a hollow area 52; wherein, the depression or hollow ...

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Abstract

The embodiment of the invention discloses a method and a device for manufacturing a nanoparticle self-assembled structure. The manufacturing method comprising the following steps: A, obtaining a substrate provided with a hydrophilic region and a hydrophobic region; B, dropping a colloidal nanoparticle solution onto the substrate, so that the nanoparticles form a self-assembled structure in the hydrophilic region. From the above, the method and the device for manufacturing nanoparticle self-assembled structure can precisely control the self-assembly position of the nanoparticles, and is simpleand easy to operate.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a method and device for making a nanoparticle self-assembled microarray. Background technique [0002] Nanoparticles (such as gold nanorods) are extremely sensitive to the adsorption of small molecules around them, and the substances adsorbed on their interfaces will cause changes in their surface plasmon resonance frequencies, which are specifically manifested as changes in optical signals such as light absorption and surface-enhanced Raman spectroscopy. Therefore, using nanoparticles as a sensing element to construct sensors can realize label-free and highly sensitive detection of molecules, and has played an important role in the field of small molecule detection. There are two main ways to use nanoparticles to detect small molecules, one is to detect in a solution environment, and the other is to assemble nanoparticles on an interface for detection. In the solution environment, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
CPCG01N21/25G01N2021/258
Inventor 王艳艳王爽
Owner TIANJIN UNIV
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