Preparation method of pipettor for transferring trace liquid drop losslessly based on pyroelectric effect

Abstract

The invention relates to a preparation method of a pipettor for transferring trace liquid drop losslessly based on pyroelectric effect. The method comprises the following steps: preparing a layer of super-hydrophobic layer with uniform thickness on a pyroelectric material, and preparing a layer of light-absorbing layer with uniform thickness on a lower surface of the pyroelectric material to obtain a composite material; fixing a sheet metal with a hole at a center at a light outlet of an infrared laser pen as a diaphragm, then aligning the light-absorbing layer of the composite material with the sheet metal with the hole, and fixing the composite material on a lower surface of the sheet metal with the hole, thereby obtaining the pipettor. The trace pipettor disclosed by the invention can effectively and precisely transfer the quantitative solution, the transferring process is free from any loss, the transferring precision is high, and an inaccurate detection result is avoided.

Description

technical field [0001] The invention relates to a preparation method of a pipette for pipetting micro-droplets without loss based on pyroelectric effect, and belongs to the technical field of pipettes. Background technique [0002] A pipette (or pipette) is a commonly used laboratory tool in chemistry, biology, and medicine for the quantitative transfer of liquids, often as a medium dispenser. Pipettes come in a variety of designs for a variety of purposes, from single-piece glass pipettes to more complex adjustable electronic pipettes with varying degrees of precision. Many types of pipettes function by creating a partial vacuum above a liquid holding chamber and selectively releasing this vacuum to aspirate and dispense liquid. One example is the most widely used vented micropipette, which generates a vacuum through the vertical stroke of a metal or ceramic piston inside an airtight sleeve. When actuated by the depression of the plunger, a vacuum is created in the space ...

AI Technical Summary

Problems solved by technology

[0003] Most of the commercially available micropipettes currently on the market work based on the above principles, but this method usually inevitably leaves a part of the trace solution in the tip and cannot be discharged when pipetting a small amount of liquid droplets, resulting in the loss of the solution. In addition, the pipetting accuracy of the existing micropipettes is not accurate enough, which directly leads to deviations in the results

Images