Microjet generator for highly viscous fluids
Liquid jet is utilized in various key technologies such as inkjet printing. However, most methods can eject only low viscosity liquid, which is almost the same viscosity of water.
This limitation of the viscosity causes the blurring and dulling color of the ink. To solve these problems, the method of ejecting highly viscous liquid jet is required.
Researchers at Tokyo University of Agriculture and Technology have newly proposed a device of generating microjet with high viscosity, like a honey. To produce the viscous liquid jets, we use an impulsive force i.e. the liquid jet is induced by adding an impact applied at the bottom of a liquid-filled container.
Moreover our device relies on additional trick: the wettable thin tube is inserted into the liquid, where liquid level inside the tube is kept deeper than that outside the tube. We find that the liquid inside the tube is significantly accelerated thanks to this trick.
As a result, our device can eject a liquid jet with high viscousity, which is more than 1,000 times viscos than water and with non-Newtonian properties such as nail polish. We have also revealed the mechanism of our device via conducting experiments and numerical simulations.
Our device overcomes the existing problems such as the limitation of the viscosity and solidifies the base for the next generation manufacturing such as 3D manufacturing and biological printings.
###
This work was supported by JSPS KAKENHI Grant Numbers 26709007,17H01246,17J06711.”
Media Contact
All latest news from the category: Agricultural and Forestry Science
Newest articles
Lighting up the future
New multidisciplinary research from the University of St Andrews could lead to more efficient televisions, computer screens and lighting. Researchers at the Organic Semiconductor Centre in the School of Physics and…
Researchers crack sugarcane’s complex genetic code
Sweet success: Scientists created a highly accurate reference genome for one of the most important modern crops and found a rare example of how genes confer disease resistance in plants….
Evolution of the most powerful ocean current on Earth
The Antarctic Circumpolar Current plays an important part in global overturning circulation, the exchange of heat and CO2 between the ocean and atmosphere, and the stability of Antarctica’s ice sheets….