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Droplet tweezers and droplet control method

A control method, droplet technology, applied in chemical instruments and methods, liquid transfer laboratory utensils, laboratory utensils, etc., can solve the problems of limited application, high cost, difficult to widely use, etc. The effect of superior compatibility

Active Publication Date: 2020-02-14
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with surface modification, the surface deformation of the material is more convenient and the biocompatibility is better, but the controllable range of surface hydrophobicity is limited, which limits its application occasions
In addition, the above two methods are difficult to be widely used in industry due to their high cost.

Method used

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  • Droplet tweezers and droplet control method

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] The inventors of the present invention found that the change of the hydrophobic non-parallel plate structure ...

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Abstract

The invention discloses a pair of droplet tweezers and a droplet control method. The pair of droplet tweezers comprises two tweezer arms, and two hydrophobic plates which are respectively fixed at thehead ends of the two forceps arms; the two hydrophobic plates are arranged at an angle; and the two hydrophobic plates can relatively translate, and the angle between the two hydrophobic plates is adjustable. According to the droplet tweezers, the direction and the value of capillary force borne by droplets can be changed through structural changes of the hydrophobic non-parallel plates, upward movement and downward movement of droplets can be achieved, and therefore capture / release of droplets is achieved. The method is different from other droplet capturing / releasing methods; the force forcapturing / releasing the droplets comes from the structural characteristics of the non-parallel plates, the droplet tweezers show wide applicability and biocompatibility for hydrophobic properties of different bottom faces, and can become a powerful platform in the aspects of microfluid systems, liquid drop conveying, biological analysis, micro-reaction containers and the like.

Description

technical field [0001] The invention belongs to the technical field of micro-droplet control, and relates to a droplet tweezers and a droplet control method. Background technique [0002] At present, droplet-based surface microfluidics technology is widely used in microfluidic systems, droplet transfer, microreactors, biomedical fields, etc. . However, due to contact angle hysteresis (CAH) and contact line fixation, surface contamination and liquid loss will be inevitable. To address these issues, non-destructive droplet manipulation methods on superhydrophobic surfaces have received extensive attention. [0003] Existing methods for lossless droplet transfer are mainly based on smart surfaces with tunable adhesion. Droplet transfer is achieved by switching high adhesion force to capture the droplet and low adhesion force to release the droplet. The most commonly used method is to treat the surface with special materials, so that the surface can respond to external stimu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/00
CPCB01L3/502792B01L3/56B01L2200/0621B01L2300/165
Inventor 黄海波卞雄恒陈立国孙立宁
Owner SUZHOU UNIV
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