Nav: Home

Liquid jets break up more readily on a substrate

April 04, 2019

Whether we're aware of it or not, in day-to-day life we often witness an intriguing phenomenon: the breakup of jets of liquid into chains of droplets. It happens when it rains, for example, and it is important for inkjet printers. However, little is known about what happens when a liquid jet, also known as a liquid filament, breaks up on top of a substrate. According to a new study, the presence of a nearby surface changes the way the filament breaks up into smaller droplets. In a new paper published by Andrew Dziedzic at the New Jersey Institute of Technology in Newark, New Jersey, USA, and colleagues in EPJ E, computer simulations are used to show that a filament is more likely to break up near a surface.

The authors examined how different values of surface tension, the viscosity of the liquid and the dimensions of the liquid filament affect the way droplets are formed. This has important implications for a range of areas - from technology that uses tiny amounts of fluids and requires precise dosing, to the study of biological and geological systems.

When a filament is broken into multiple droplets, the structure is unstable because surface tension means liquids tend to shrink to have the smallest-possible surface area. Moreover, a single droplet has a smaller surface area than multiple droplets. The researchers found there were three possible scenarios: the filament collapses into one droplet, breaks up into multiple droplets, or breaks up and then re-forms back into a single droplet.

Further, they found that the presence of a substrate makes the breaking up of the filament more likely. The team hopes their work will benefit a variety of applications, such as the production of DNA chips and in connection with lab-on-a-chip technology.
-end-
Reference

A. Dziedzic, M. Nakrani, B. Ezra, M. Syed, S. Popinet, and S. Afkhami (2019), Breakup of finite-size liquid filaments: Transition from no-breakup to breakup including substrate effects, Eur. Phys. J. E, 2018, 42:18. DOI 10.1140/epje/i2019-11785-y

Springer

Related Surface Tension Articles:

Tadpoles break the tension with bubble-sucking
When it comes to the smallest of creatures, the hydrogen bonds that hold water molecules together to form 'surface tension' lend enough strength to support their mass: think of insects that skip across the surface of water.
Finding connections at the surface
How and where receptors touch at the surface of a cell may influence the strength of neuronal connections and contribute to identifying better medical interventions for pain, cancer other diseases.
Scratching the surface of perovskites
Professor Yabing Qi and his team in the Energy Materials and Surface Sciences Unit at OIST, in collaboration with researchers at the University of Pittsburgh, USA, have, for the first time, characterized the structural defects that prompt the movement of ions, destabilizing the perovskite materials.
What makes the Earth's surface move?
Do tectonic plates move because of motion in the Earth's mantle, or is the mantle driven by the plates' movement?
Tension around autonomy increases family conflict at end of life
Conflict within families can be stressful and confusing, and it can lead to feelings of sadness.
How newly found tension sensor plays integral role in aligned chromosome partitioning
A Waseda University-led research found that oncogene SET/TAF1, which was found to be a proto-oncogene of acute myeloid leukemia (AML), contributes to proper chromosome partitioning as a tension sensor.
Our social judgments reveal a tension between morals and statistics
People make statistically-informed judgments about who is more likely to hold particular professions even though they criticize others for the same behavior, according to findings published in Psychological Science, a journal of the Association for Psychological Science.
Putting a face on a cell surface
With the help of machine learning, ETH researchers have been able to thoroughly describe the repertoire proteins on the cell surface for the first time.
Penetrating the soil's surface with radar
Ground penetrating radar measures the amount of moisture in soil quickly and easily.
Measuring the tension of a cell with a molecule
Researchers at UNIGE, working under the umbrella of the National Centre for Competence in Research Chemical Biology, have created a new fluorescent molecule with which they were able to measure the tension of a cellular membrane, and, in the process, discover how cells adjust their surface area relative to their volume.
More Surface Tension News and Surface Tension Current Events

Trending Science News

Current Coronavirus (COVID-19) News

Top Science Podcasts

We have hand picked the top science podcasts of 2020.
Now Playing: TED Radio Hour

Climate Mindset
In the past few months, human beings have come together to fight a global threat. This hour, TED speakers explore how our response can be the catalyst to fight another global crisis: climate change. Guests include political strategist Tom Rivett-Carnac, diplomat Christiana Figueres, climate justice activist Xiye Bastida, and writer, illustrator, and artist Oliver Jeffers.
Now Playing: Science for the People

#562 Superbug to Bedside
By now we're all good and scared about antibiotic resistance, one of the many things coming to get us all. But there's good news, sort of. News antibiotics are coming out! How do they get tested? What does that kind of a trial look like and how does it happen? Host Bethany Brookeshire talks with Matt McCarthy, author of "Superbugs: The Race to Stop an Epidemic", about the ins and outs of testing a new antibiotic in the hospital.
Now Playing: Radiolab

Speedy Beet
There are few musical moments more well-worn than the first four notes of Beethoven's Fifth Symphony. But in this short, we find out that Beethoven might have made a last-ditch effort to keep his music from ever feeling familiar, to keep pushing his listeners to a kind of psychological limit. Big thanks to our Brooklyn Philharmonic musicians: Deborah Buck and Suzy Perelman on violin, Arash Amini on cello, and Ah Ling Neu on viola. And check out The First Four Notes, Matthew Guerrieri's book on Beethoven's Fifth. Support Radiolab today at Radiolab.org/donate.