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Periodic Nanostructures for Sensing Applications

Project Quick Facts

Principal Investigator

  • Prof. ONG Hock Chun Daniel

    Department of Physics

  • Funding Sources

    Innovation and Technology Commission

  • Collaboration

    Grand Win Technology Development Ltd
    Archean Gene Technology (Shenzhen) Co., Ltd

  • Patent

    1 provisional patent application

We have been using developing different kinds of optical sensors based on nanoscale periodic nanostructures. The optical properties of the nanostructures have been applied for gas, virus, and particulate matter (PM) sensing. For example, the nanostructures can detect bio-molecules at very low concentration. In addition, we have achieved low part-per-billion (ppb) level of volatile organic compound gaseous sensing in mid infrared. By integrating the phase detection scheme with the nanostructures, we are aiming to develop new sensors to detect COVID-19 and influenza viruses for healthcare and environmental surveillance.

Surface plasmon periodic arrays fabricated by interference lithography

Uniqueness and Competitive Advantages:

  • Capable of detecting simple gases and volatile organic compounds down to part-per-billion level
  • Capable of detecting small particulate matter sizes down to 0.1um
  • Capable of detecting different biological matters including COVID-19 and influenza virus
  • Real time detection
  • Portable and cost-effective
Prototype of sensor

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