Coffee-ring-effect-controllable film forming method and film forming device and control method
A film-forming device and a film-forming method technology, applied to printing devices, printing, typewriters, etc., can solve problems such as inability to detect in real time
Active Publication Date: 2019-03-08
XIAMEN UNIV OF TECH
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Problems solved by technology
[0005] Although the existing technology has studied the factors affecting the "coffee ring effect" in the film formation process, it cannot be detected in real time during the deposition process, and the film formation of the "coffee ring effect" can be suppressed or utilized according to actual requirements. Films that make complex graphics
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[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] What the present invention discloses is a film forming method that can control the coffee ring effect. Through image acquisition devices such as microscopes and high-speed cameras (or video cameras), the process of liquid droplet deposition and film formation is monitored in real time, and then according to the monitored images, by adjusting the temperature Or pH value and other parameters that can affect the "coffee ring effect", control the "coffee ring effect", and complete a uniform deposition film.
[0036] For the situation where it is necessary to obtain the influence parameters of the "coffee ring effect" in advance, the present invention can adopt the following film formation method: monitor the droplet deposition film formation process in real time through a microscope and a high-speed camera (or video camera), and the...
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The invention discloses a coffee-ring-effect-controllable film forming method and film forming device and a control method. According to the film forming method, an image collecting device is arrangedand used for monitoring liquid drop deposition and film forming processes in real time, the image forming of a coffee ring is observed, the influence factors of the ''coffee ring effect'' are combined, in the deposition process, according to experiment requirements, the ''coffee ring effect'' is inhibited or utilized to form a film, so that the purpose of real-time monitoring and transformation is achieved, and the thin film with a complicated graph is manufactured. Moreover, optimal film-forming parameters of a certain material can be obtained through the method, then film forming is carriedout by using the parameters, and finally, the thin film with a uniform and complex pattern is manufactured.
Description
technical field [0001] The invention relates to the field of droplet spraying supporting devices, in particular to a film forming method capable of controlling the coffee ring effect, a film forming device and a control method for the film forming device. Background technique [0002] After inkjet printing, the uniform deposition of ink functional solutes is very important for the formation of high-precision patterns and the performance and application of the fabricated devices. In the process of inkjet printing, not only the parameters need to be adjusted to control the steady state of droplet ejection, but also the shape of droplet deposition needs to be controlled. In 1997, Deegan proposed that when a drop of coffee or tea drips on the tabletop, its particulate matter will leave a dyed ring on the tabletop, and the color of the ring is uneven, and the edge part is larger than The phenomenon that is deeper in the middle is called the "coffee ring effect". [0003] In the...
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IPC IPC(8): B41J3/44B41J3/46B41J29/393
CPCB41J3/445B41J3/46B41J29/393
Inventor 谢丹李波舒霞云莫靖宇许克宇陈文奂吴常健
Owner XIAMEN UNIV OF TECH