Sensing and Wearable Technologies with 2D Nanomaterials by Dr Otto Lam

Join us at the IAS@NTU STEM Graduate Colloquium by Dr Otto Lam from the University of Exeter.

A range of 2D nanomaterials are emerging as versatile semiconductors for next generation optoelectronic technologies. In this talk, I will showcase how they can be integrated into sensing and wearable technologies. Based on our group’s recent work, I will introduce the integration of hybrid and lead-free perovskites in flexible, high frequency, underwater optoelectronic devices, alongside progress in wafer scale fabrication. This also includes our efforts in probing their intrinsic optoelectronic properties, with a focus on how the presence of trap states influences charge transport and how these devices behave.

We will also discuss other 2D systems, from graphene to transition metal dichalcogenides (TMDCs), and our group’s work on applying them to wearable electronics, such as acoustic energy harvesters, voice sensors, and functionalized textile-based biosensors. Overall, these results bring together fabrication, device physics, and application, showcasing how understanding the underlying properties of 2D nanomaterials enables their use across a range of emerging technologies.

About the speaker:

Dr Hoi Tung Lam is a postdoctoral research fellow in the Department of Physics and Astronomy at the University of Exeter, UK. His current work focuses on 2D material based optomechanical systems for quantum computing platforms, alongside ongoing research into novel 2D materials and their use in optoelectronic devices. He has worked with hybrid perovskites and their lead-free alternatives, exploring their potential in wafer-scale photodetectors, underwater sensing, and healthcare monitoring applications. Much of his previous work with Prof Saverio Russo and Prof Monica Craciun has also been on developing self-powered wearable electronics with such 2D materials, which has since enabled a range of energy harvesting and sensing applications.