Tech Briefs Magazine - November 2023 - 47

Self-Organizing Lasers Could
Lead to New Materials
A first application of the technology could
be for next-generation electronic inks for
smart displays.
Imperial College of London, United Kingdom
W
hile many artificial materials have advanced properties,
they have a long way to go to combine the versatility and
functionality of living materials that can adapt to their situation.
Now, researchers from Imperial College London and University
College London have demonstrated the first spontaneously
self-organizing laser device, which can reconfigure
when conditions change.
The innovation will help enable the development of smart
photonic materials capable of better mimicking properties of
biological matter, such as responsiveness, adaptation, self-healing,
and collective behavior.
Co-Lead Author Professor Riccardo Sapienza, from the Department
of Physics at Imperial, said: " Lasers, which power
most of our technologies, are designed from crystalline materials
to have precise and static properties. We asked ourselves if
we could create a laser with the ability to blend structure and
functionality, to reconfigure itself and cooperate like biological
materials do. Our laser system can reconfigure and cooperate,
thus enabling a first step toward emulating the ever-evolving
relationship between structure and functionality typical of living
materials. "
Lasers are devices that amplify light to produce a special
form of light. The self-assembling lasers in the team's experiment
consisted of microparticles dispersed in a liquid with
high 'gain' - the ability to amplify light. Once enough of these
microparticles collect together, they can harness external energy
to 'lase' - produce laser light.
An external laser was used to heat up a 'Janus' particle (a
particle coated on one side with light-absorbing material),
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Clusters of lasing microparticles form different patterns around groups
of Janus particles. (Image: Imperial College of London)
Tech Briefs, November 2023
www.techbriefs.com
47
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Tech Briefs Magazine - November 2023

Table of Contents for the Digital Edition of Tech Briefs Magazine - November 2023

Tech Briefs Magazine - November 2023 - Intro
Tech Briefs Magazine - November 2023 - Sponsor
Tech Briefs Magazine - November 2023 - Cov1
Tech Briefs Magazine - November 2023 - Cov2
Tech Briefs Magazine - November 2023 - 1
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Tech Briefs Magazine - November 2023 - Cov3
Tech Briefs Magazine - November 2023 - Cov4
Tech Briefs Magazine - November 2023 - PIT-Cov1
Tech Briefs Magazine - November 2023 - PIT-Cov2
Tech Briefs Magazine - November 2023 - PIT-1
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Tech Briefs Magazine - November 2023 - PIT-Cov3
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