Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Microscale IR spectroscopy enabled by phase change materials and metasurfaces

14.05.2018

The mid-infrared is an interesting part of the electromagnetic spectrum that is composed of colours that cannot be seen by the human eye. Many chemical molecules resonate when illuminated by infrared light.

This infrared resonance can then be used to identify or "fingerprint" the molecules.


Illustration of the metasurface interacting with gas molecules.

Credit: Courtesy of SUTD

The infrared is, therefore, useful for a range of applications, including atmospheric pollution monitoring, detecting explosives and narcotics, measuring food quality, and many others.

However, infrared optical components tend to be large, expensive, and non-tuneable.

Researchers from the Singapore University of Technology and Design (SUTD) in collaboration with Dalian University of Technology (DUT) and the Singapore Sinchrotron Light Source (SSLS), have demonstrated that tuneable phase change materials, which are more typically found in data storage devices, can be used to tune the response of microscale infrared transmissive "metasurface" filters.

The filters can be tuned across the broad band of frequencies in the mid-infrared spectrum where many pollutant gasses vibrate.

SUTD lead researcher, Assistant Prof Robert Simpson said: "These infrared filters are so small that they can be incorporated into a smart phone.

This would allow you to measure the quality of the oil that has been used to fry your food, measure the air that you breathe, or to measure fluids that are expelled from your body to check the condition of your health."

This research was published in Advanced Optical Materials, which is renowned for publishing breakthrough interdisciplinary research that focuses on light matter interactions.

Media Contact

Melissa Koh
melissa_koh@sutd.edu.sg
65-649-98742

http://www.sutd.edu.sg 

Melissa Koh | EurekAlert!
Further information:
http://dx.doi.org/10.1002/adom.201701346

More articles from Materials Sciences:

nachricht High-efficiency thermoelectric materials: New insights into tin selenide
25.04.2019 | Helmholtz-Zentrum Berlin für Materialien und Energie

nachricht Scientists develop low-cost energy-efficient materials
24.04.2019 | National University of Science and Technology MISIS

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Full speed ahead for SmartEEs at Automotive Interiors Expo 2019

Flexible, organic and printed electronics conquer everyday life. The forecasts for growth promise increasing markets and opportunities for the industry. In Europe, top institutions and companies are engaged in research and further development of these technologies for tomorrow's markets and applications. However, access by SMEs is difficult. The European project SmartEEs - Smart Emerging Electronics Servicing works on the establishment of a European innovation network, which supports both the access to competences as well as the support of the enterprises with the assumption of innovations and the progress up to the commercialization.

It surrounds us and almost unconsciously accompanies us through everyday life - printed electronics. It starts with smart labels or RFID tags in clothing, we...

Im Focus: Energy-saving new LED phosphor

The human eye is particularly sensitive to green, but less sensitive to blue and red. Chemists led by Hubert Huppertz at the University of Innsbruck have now developed a new red phosphor whose light is well perceived by the eye. This increases the light yield of white LEDs by around one sixth, which can significantly improve the energy efficiency of lighting systems.

Light emitting diodes or LEDs are only able to produce light of a certain colour. However, white light can be created using different colour mixing processes.

Im Focus: Quantum gas turns supersolid

Researchers led by Francesca Ferlaino from the University of Innsbruck and the Austrian Academy of Sciences report in Physical Review X on the observation of supersolid behavior in dipolar quantum gases of erbium and dysprosium. In the dysprosium gas these properties are unprecedentedly long-lived. This sets the stage for future investigations into the nature of this exotic phase of matter.

Supersolidity is a paradoxical state where the matter is both crystallized and superfluid. Predicted 50 years ago, such a counter-intuitive phase, featuring...

Im Focus: Explosion on Jupiter-sized star 10 times more powerful than ever seen on our sun

A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter

  • Coolest and smallest star to produce a superflare found
  • Star is a tenth of the radius of our Sun
  • Researchers led by University of Warwick could only see...

Im Focus: Quantum simulation more stable than expected

A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.

Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

Fraunhofer FHR at the IEEE Radar Conference 2019 in Boston, USA

09.04.2019 | Event News

 
Latest News

High-efficiency thermoelectric materials: New insights into tin selenide

25.04.2019 | Materials Sciences

Salish seafloor mapping identifies earthquake and tsunami risks

25.04.2019 | Earth Sciences

Using DNA templates to harness the sun's energy

25.04.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>