DEC 24, 2020 6:00 AM PST

Novel Two-phased Particles are the Ultimate Authenticity Tag

WRITTEN BY: Daniel Duan

Counterfeit goods producers are flooding the global market with low-quality, sometimes dangerous merchandise and ripping off brand-name manufacturers. A new technique developed by a team of researchers at the Korea Advanced Institute of Science and Technology (KAIST) can add an innovative authenticity tag to counter piracy. 

Named after the two-faced Roman god Janus, the term "Janus Particles" often refer to tiny particles that possess two distinct physical properties. Its first appearance in scientific articles was used to describe glass beads with one of a hydrophilic side and a hydrophobic side.

The Korean team created their "Janus Balls" by tinkering with the optical nature of colloidal crystals. Their particles are made out of two photocurable resins by a microfluidic instrument. One of the resins contains magnetic nanoparticles and carbon black, and the other one has silica particles with a high volume fraction. 

Under normal circumstances, the particles would appear as black. When placed in a magnetic environment, their "Janus balls" would align their magnetic moment to the field and exhibit their structural colors, which allow them to act as an anti-counterfeit label.

This research is recently reported in the journal ACS Nano.

Source: ACS via Youtube

About the Author
Graduated with a bachelor degree in Pharmaceutical Science and a master degree in neuropharmacology, Daniel is a radiopharmaceutical and radiobiology expert based in Ottawa, Canada. With years of experience in biomedical R&D, Daniel is very into writing. He is constantly fascinated by what's happening in the world of science. He hopes to capture the public's interest and promote scientific literacy with his trending news articles. The recurring topics in his Chemistry & Physics trending news section include alternative energy, material science, theoretical physics, medical imaging, and green chemistry.
You May Also Like
MAR 28, 2022
Technology
New "Quantum Battery" Makes Charging an Electric Vehicle as Quick as Pumping Gas
MAR 28, 2022
New "Quantum Battery" Makes Charging an Electric Vehicle as Quick as Pumping Gas
The adoption of electric vehicles (EVs) has skyrocketed in recent years. In fact, the EV market is expected to continue ...
APR 08, 2022
Chemistry & Physics
Mysterious Odd Radio Circles in the Sky
APR 08, 2022
Mysterious Odd Radio Circles in the Sky
In 2020, Dr. Ray Norris and his team conducted radio observations of the sky using the Australian Square Kilom ...
APR 28, 2022
Chemistry & Physics
The Search For the Quantum Glow
APR 28, 2022
The Search For the Quantum Glow
In collaboration with the University of Waterloo, physicists at the Massachusetts Institute of Technology have proposed ...
MAY 06, 2022
Drug Discovery & Development
Scientists discover new methods of production for Sulphur-based medications
MAY 06, 2022
Scientists discover new methods of production for Sulphur-based medications
Modern medicine has drastically changed since humans discovered the first ancient treatment methods. Herbal remedies and ...
MAY 15, 2022
Earth & The Environment
This Day in Science: Mount St Helens Eruption Anniversary
MAY 15, 2022
This Day in Science: Mount St Helens Eruption Anniversary
Volcanic eruptions are some of the most awesome spectacles in nature, as watching the interior of the planet we live on ...
MAY 16, 2022
Chemistry & Physics
A Strange 'Black Widow' Pulsar Candidate in Our Galaxy
MAY 16, 2022
A Strange 'Black Widow' Pulsar Candidate in Our Galaxy
Pulsars are remnants of dead stars that die by the process of supernova explosion. These explosions often leave either a ...
Loading Comments...