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Method for preparing fractal-structured microchannel through 3D printing

A fractal structure and 3D printing technology, applied in the field of micromachining, can solve the problems of complex process, difficult preparation of complex fractal structure microchannels, high cost, etc., and achieve the effect of simple preparation process

Inactive Publication Date: 2017-10-24
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for preparing fractal structure microchannels by 3D printing, which is used to solve the difficult realization and complicated process of preparing complex fractal structure microchannels in the prior art. , the problem of high cost

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  • Method for preparing fractal-structured microchannel through 3D printing
  • Method for preparing fractal-structured microchannel through 3D printing
  • Method for preparing fractal-structured microchannel through 3D printing

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Embodiment 1

[0047] see Figure 2 to Figure 4 , this embodiment provides a method for preparing a single-layer fractal structure microchannel by 3D printing. The process of preparing a fractal-structure microchannel by 3D printing is as follows: firstly, a computer is used to draw a single-layer wedge-shaped fractal structure skeleton. like figure 2 As shown, the thickness of the skeleton of the fractal structure involved is 1mm. The fractal structure is composed of 2 levels of bifurcations and 5 skeletons of different lengths. 1mm. At both ends of the skeleton, a branch with a length of 20 mm is connected to the first terminal far away from the center of the skeleton with a first vertical support 11 perpendicular to the plane where the main body 12 of the fractal structure is located, and its length is 50 mm, and one end is connected to the on the skeleton of the fractal structure described above. On the second terminal corresponding to the first terminal, a second vertical support 11...

Embodiment 2

[0056] see Figure 5 and Image 6 , this embodiment provides a method for preparing a multilayer fractal structure microchannel, the preparation method of the multilayer structure microchannel includes: 3D printing a double-layer fractal structure skeleton, and the double-layer fractal structure skeleton is obtained by computer drawing. like Figure 5 As shown, preferably, it is composed of 7 levels of branches in an "H-shaped" structure, and its lengths are: 50mm, 38.7mm, 31.7mm, 25.2mm, 20mm, 15.9mm, 12.6mm, and the widths are 3mm, 2.38mm, 1.89mm, 1.50mm, 1.19mm, 0.94mm, 0.75mm, the thickness is 1mm.

[0057] The described double-layer fractal structure skeleton comprises a first "H-shaped" fractal skeleton plane 42 and a second "H-shaped" fractal skeleton plane 43, and the two fractal planes are connected by a vertical connection skeleton 44, and the vertical connection skeleton 44 The length is 2mm. The first "H-type" fractal skeleton plane 42 is included, and its leng...

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Abstract

The invention provides a method for preparing a fractal structure microchannel by 3D printing, comprising: 1) drawing by computer drawing software, and printing out a corresponding fractal structure skeleton by a 3D printer; 2) fixing the fractal structure skeleton on a culture dish , and inject polydimethylsiloxane solution to a certain height; 3) vacuum the air bubbles in the polydimethylsiloxane solution, heat and solidify; 4) use a solvent to dissolve the fractal structure skeleton to form a fractal Structural microchannels. The preparation process of the present invention is simple, does not require complex instruments and strict laboratory conditions, can multi-layer complex structure microchannels and does not need to assemble multiple parts, and is especially suitable for fast, low-cost, large-scale complex structure channels in microfluidic technology. Batch production.

Description

technical field [0001] The invention belongs to the field of micromachining, in particular to a method for preparing a fractal structure microchannel by 3D printing. Background technique [0002] Microfluidic technology is an emerging interdisciplinary subject involving chemistry, fluid physics, microelectronics, new materials, biology and biomedical engineering, with the characteristics of integration and miniaturization. Due to the high heat and mass transfer efficiency and easy control between fluids at the micro-nano scale, microfluidic technology is widely used in organic synthesis, microreactors and chemical analysis. In addition, microfluidic technology has significant advantages in the field of biomedicine, such as extraction and purification, separation and detection of viruses, cells or macromolecules, and rapid diagnosis of diseases. At the same time, the microchannel with fractal structure can further improve the heat and mass transfer capacity of the system and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/20B29C64/118B29C64/124B01L3/00B33Y10/00B33Y80/00
CPCB29C67/202B01L3/502707B33Y10/00B33Y80/00
Inventor 王刚卢悦张苏骐吴明红唐志永吕敏
Owner SHANGHAI UNIV
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