Nano-jet-micro-nano composite jet device and its control method based on pyroelectric effect

Abstract

The invention discloses a mechanism design of a nanojet device based on pyroelectric effect, a mechanism design of a micro-nano-composite-jet device based on pyroelectric effect and a control method of the micro-nano-composite-jet device. The nanojet device comprises a jet mechanism, a pyroelectric crystal, a pressure source, a heat source and a control mechanism. The nanojet device generates an electric field under the action of the heat source through the pyroelectric crystal, a solution is pulled out to form nano-scale liquid drops, and problems caused by high voltage and complicated circuit required when an electric field is directly applied to a traditional nanojet device can be avoided. A piezoelectric mechanism of a traditional jet device is further arranged on the micro-nano-composite-jet device. When micron-scale liquid drops need to be manufactured, the heat source is cut off so that micron-scale jet can be conducted, and then micro-nano-composite-transition is achieved.

Description

technical field [0001] The invention relates to the technical field of droplet spraying and free forming thereof, in particular to a mechanism design and control method of a pyroelectric effect-based nano-spray-micro-nano composite spraying device. Background technique [0002] Droplet ejection devices are widely used in printed circuit board manufacturing technology, display manufacturing technology, and inkjet printer technology. At present, droplet ejection devices are generally divided into micron-scale ejection and nano-scale ejection according to their ejection resolutions, and the ejection principles of the two are completely different. Micron-scale injection is to eject the liquid in the injection chamber by driving the diaphragm, etc. Jetting can achieve nanoscale resolution, but its application is limited due to the need for high-voltage circuits and complex electrodes. [0003] In view of the shortcomings of the existing nano-scale jetting devices, it is necessa...

AI Technical Summary

Problems solved by technology

Micron-scale injection is to eject the liquid in the injection chamber by driving the diaphragm, etc. Jetting can achieve nanoscale resolution, but its application is limited due to the need for high-voltage circuits and complex electrodes

[0003] Aiming at the deficiencies of the existing nanoscale jetting devices, it is necessary to design a jetting device that can avoid many problems caused by the high voltage and complicated circuits required to directly apply the electric field

[0004] On the other hand, due to the difference in principle, nozzle structure and other auxiliary equipment between micro-jet and nano-jet, it is generally difficult to realize the combined use of the two in jet printing technology. When using a nano-jet device, even if some structures can use micro-jet, it is difficult to convert to micro-jet equipment, which will greatly reduce the jet efficiency

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