Researchers from Nanyang Polytechnic (NYP) have created a revolutionary ultra-sensitive sensor, Nanosponge-TiO2 Chemical Sensor, the first of its kind in the world that is 100 times more sensitive than commercial sensors available in the market today. It is able to detect up to 10 types of gases below the 1ppm (parts per million) level.

The research team at the School of Engineering (Manufacturing) is among the first in the world to use titanium oxide nanosponges as chemical sensors. By introducing chemicals into the titanium oxide nanosponges, the researchers were able to change its electrical properties, allowing it to detect gases at extremely low concentrations.

This discovery makes it possible for the creation of extremely sensitive sensors with multiplexing ability or the ability to sense multiple gases simultaneously such as hydrogen, oxygen, carbon monoxide, sulphur dioxide, nitrogen oxides. Current sensors can only detect a maximum of any three types of gases, and at higher concentrations.

The technology will pave the way for highly sensitive detectors in applications for the security industry. Despite the current screening technologies deployed, potential still exists for dangerous weapons or explosive materials to be smuggled into countries, posing a real threat to public safety. Other commercialisation potential includes applications in environmental monitoring, medical diagnostics and alternative energy industries.

NYP is already in discussion with several interested parties of this patented technology. The group's work was also published in top scientific journal Angewandte Chemie.

Another research team at NYP is working on a project to enhance absorption of collagen (in drugs and cosmetics) by the human body.

“Both projects showcase NYP’s capability as a centre for high-value science and advanced technology research. Projects such as these will expose our new Diploma in Nanotechnology and Materials Science students to cutting edge technology research and its wide-ranging applications potential. Graduates will be trained to be in the forefront of research and development of these advanced technologies,” said Mr Hooi Hoi Min, Senior Director for NYP’s School of Engineering (Manufacturing).

Last updated on 30-Oct-2008 by Rosli A Razak