Hydraulic focusing assembling method for various nano-wire arrays based on micro-fluid chip

A technology of microfluidic chips and nanowire arrays, applied in nanotechnology, microstructure devices, manufacturing microstructure devices, etc., can solve problems such as the lack of nanowire assembly methods, and achieve the effect of simple operation

Inactive Publication Date: 2014-06-11
SHANGHAI UNIV
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  • Claims
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Problems solved by technology

At present, a variety of nanowire horizontal arrays have good application prospects in biological and environmental detection, but there is still a lack of nanowire assembly methods that have the advantages of simplicity, controllability, and unlimited materials, especially for various nanowire arrays. to assemble

Method used

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  • Hydraulic focusing assembling method for various nano-wire arrays based on micro-fluid chip
  • Hydraulic focusing assembling method for various nano-wire arrays based on micro-fluid chip

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Embodiment Construction

[0017] Preferred embodiments of the present invention are described as follows in conjunction with the accompanying drawings:

[0018] like figure 1 and figure 2 As shown, take deionized water, ethanol solution of silver nanowires and ethanol solution of gold nanowires to prepare nanowire arrays. First, the silver nanowire solution is injected into the sample inlet of the microfluidic chip as the sample flow, and at the same time, the deionized water is injected as the sheath flow, and the silver nanowire solution will be focused into a thin stream; the size and position of the focused nanowire solution The flow rate of the sheath flow and the sample flow can be adjusted so that the silver nanowire solution reaches the predetermined position with a predetermined size; after 20 minutes, the silver nanowire solution is replaced with the gold nanowire solution, and the flow rate of the sheath flow is adjusted at the same time to make the gold nanowire solution The solution arr...

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Abstract

The invention discloses a hydraulic focusing assembling method for various nano-wire arrays based on a micro-fluid chip. According to the hydraulic focusing assembling method, flow rates, assembling time and components of a sheath flow and a nano-wire solution flow are adjusted to obtain the various parallel nano-wire arrays on the surface of the micro-fluid chip; under the effect of hydraulic focusing, the nano-wire solution flow entering the micro-fluid chip is focused on a pre-set position by the sheath flow in a pre-set size. The method can carry out the hydraulic focusing through the micro-fluid chip so that the operation is simple and the nano-wire arrays with different materials can be directionally and qualitatively assembled; the distribution characteristics of components, positions, sizes, densities and the like of the nano-wire arrays can be controlled, and the controllable assembling of the various horizontal nano-wire arrays can be realized, so that a feasible channel is explored for preparing a nano device from bottom to top.

Description

technical field [0001] The invention relates to a method for assembling various nanowire arrays by hydraulic focusing based on a microfluidic chip, and belongs to the field of assembling nanowire arrays. Background technique [0002] One of the prerequisites for the practical application of nanodevices based on ordered nanowire arrays is effective integrated assembly technology. So far, many research groups have proposed a variety of different nanowire assembly methods, mainly including direct growth and assembly after growth. [0003] The direct growth method, such as limited space growth method, electric field force guidance method, specific crystal orientation growth method, etc., has the advantages of good consistency in the direction of the grown nanowire array, but it is only applicable to certain materials, and the diameter and length of the nanowires vary. Consistency is difficult to guarantee; first-growth and then-assembly methods, such as electric field / magnetic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00B82Y40/00
Inventor 刘梅彭艳冯帅杰吴智政
Owner SHANGHAI UNIV
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