Multi-functional Applications of Lead-free Ferroelectric KNbO3 Nanofibers

12 Oct 2017 Rajasekaran Ganeshkumar EPD Ferroelectric Nanofibers

PhD Student
Rajasekaran Ganeshkumar, Engineering Product Development

Zhao Rong, Associate Professor, Engineering Product Development

Cheah Chin Wei, Senior Lecturer, Engineering Product Development

This research project proposes a novel approach to synthesise lead-free nanofibers. Until now, the synthesis of nanoscale ferroelectric material involves toxic lead and faces several limitations such as being able to produce only short nanowires.
Through the process of electrospinning, ultra-long lead-free Potassium Niobate (KNbO3) nanofibers are produced. Physical characteristics of these nanofibers like morphology (solid, porous or particle), size (50–500nm) and alignment can also be controlled. These make them highly suitable for use as materials in multi-functional applications such as humidity sensors, energy generators and photo catalysts for dye degradation.
In addition, this research investigated the ferroelectric behavior of the synthesized nanofibers using state-of-the-art techniques that can isolate the piezoelectric response from other tip-induced bias phenomenon, which is the first of its kind.

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