Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Microjet generator for highly viscous fluids

13.02.2018

Simple device for microjets of fluids similar even to honey and with non-Newtonian properties

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.


Video: This is a liquid jet generator with highly viscous fluids. The device consists simple structure and can eject highly viscous liquid and nail polish (viscous non-Newtonian liquid).

Credit: Tokyo University of Agriculture and Technology, Tagawa Yoshiyuki Lab

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

Yoshiyuki Tagawa
tagawayo@cc.tuat.ac.jp
81-423-887-407

http://www.tuat.ac.jp/en/ 

Yoshiyuki Tagawa | EurekAlert!

More articles from Agricultural and Forestry Science:

nachricht Soil-less sustainability: Novel agricultural crop production incorporating water reuse
02.04.2020 | ISOE - Institut für sozial-ökologische Forschung

nachricht Exeter researchers discover a novel chemistry to protect our crops from fungal disease
30.03.2020 | University of Exeter

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Harnessing the rain for hydrovoltaics

Drops of water falling on or sliding over surfaces may leave behind traces of electrical charge, causing the drops to charge themselves. Scientists at the Max Planck Institute for Polymer Research (MPI-P) in Mainz have now begun a detailed investigation into this phenomenon that accompanies us in every-day life. They developed a method to quantify the charge generation and additionally created a theoretical model to aid understanding. According to the scientists, the observed effect could be a source of generated power and an important building block for understanding frictional electricity.

Water drops sliding over non-conducting surfaces can be found everywhere in our lives: From the dripping of a coffee machine, to a rinse in the shower, to an...

Im Focus: A sensational discovery: Traces of rainforests in West Antarctica

90 million-year-old forest soil provides unexpected evidence for exceptionally warm climate near the South Pole in the Cretaceous

An international team of researchers led by geoscientists from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) have now...

Im Focus: Blocking the Iron Transport Could Stop Tuberculosis

The bacteria that cause tuberculosis need iron to survive. Researchers at the University of Zurich have now solved the first detailed structure of the transport protein responsible for the iron supply. When the iron transport into the bacteria is inhibited, the pathogen can no longer grow. This opens novel ways to develop targeted tuberculosis drugs.

One of the most devastating pathogens that lives inside human cells is Mycobacterium tuberculosis, the bacillus that causes tuberculosis. According to the...

Im Focus: Physicist from Hannover Develops New Photon Source for Tap-proof Communication

An international team with the participation of Prof. Dr. Michael Kues from the Cluster of Excellence PhoenixD at Leibniz University Hannover has developed a new method for generating quantum-entangled photons in a spectral range of light that was previously inaccessible. The discovery can make the encryption of satellite-based communications much more secure in the future.

A 15-member research team from the UK, Germany and Japan has developed a new method for generating and detecting quantum-entangled photons at a wavelength of...

Im Focus: Junior scientists at the University of Rostock invent a funnel for light

Together with their colleagues from the University of Würzburg, physicists from the group of Professor Alexander Szameit at the University of Rostock have devised a “funnel” for photons. Their discovery was recently published in the renowned journal Science and holds great promise for novel ultra-sensitive detectors as well as innovative applications in telecommunications and information processing.

The quantum-optical properties of light and its interaction with matter has fascinated the Rostock professor Alexander Szameit since College.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

13th AKL – International Laser Technology Congress: May 4–6, 2022 in Aachen – Laser Technology Live already this year!

02.04.2020 | Event News

“4th Hybrid Materials and Structures 2020” takes place over the internet

26.03.2020 | Event News

Most significant international Learning Analytics conference will take place – fully online

23.03.2020 | Event News

 
Latest News

Capturing 3D microstructures in real time

03.04.2020 | Materials Sciences

First SARS-CoV-2 genomes in Austria openly available

03.04.2020 | Life Sciences

Do urban fish exhibit impaired sleep? Light pollution suppresses melatonin production in European perch

03.04.2020 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>