Abstract:
My research harnesses the principles of nature to tackle complex bioengineering challenges through the development of sustainable materials. We draw inspiration from photosynthesis, a process that exemplifies efficiency, leading us to explore the mechanisms of photosynthetic proteins. However, these proteins tend to denature easily when extracted from photosynthetic bacteria. To address this, we have developed a method to effectively "freeze" these proteins at room temperature, locking their structure and extending their lifespan. This innovation has deepened our understanding of their photochemistry and led to the development of the first solar protein capacitor. By harnessing the charge-storing capabilities of these proteins, we subsequently created the first self-powered protein tactile sensor. Continuing with our theme of learning from nature, I will discuss our innovative approach to fabricating one-dimensional conducting fibers for smart textiles, inspired by the silk-spinning techniques of spiders. These stretchable fibers overcome the limitations of protein-based tactile sensors, enabling advanced electronic and biomedical applications. Additionally, we have developed super-hygroscopic materials that mimic the stork's method of cooling itself, creating a dry microclimate between clothing and skin. This enhances sweat evaporation and improves thermal comfort in personal protective equipment and firefighter suits. Together, these projects illustrate the transformative potential of biomimetic materials in advancing bioengineering and promoting sustainability.

Bio:
Dr Tan Swee Ching received his Bachelor’s degree in Physics from the National University of Singapore, where he laid the groundwork for his future endeavors in research and engineering. His technical expertise was further honed during his time as a Laser Process and Equipment Engineer at Hewlett Packard in Singapore and Ireland. In this role, he developed new technologies for silicon micromachining, making significant contributions that helped reduce operational costs by at least US$400,000 per annum and increased throughput by 35% within his department. In recognition of these achievements, he was honored with the Award for Outstanding Achievement. Driven by his passion for advancing technology, Dr. Tan pursued a PhD at the University of Cambridge in the Electrical Engineering Department, supported by scholarships from the Cambridge Commonwealth Trust and Wingate Foundations. His doctoral research focused on utilizing photosynthetic proteins as light-absorbing materials for solar cells, blending his engineering background with cutting-edge research in sustainable energy technologies. This work laid the foundation for his later innovations in materials science. After completing his PhD, Dr. Tan joined the Department of Materials Science and Engineering at MIT as a postdoctoral associate. There, he worked under the supervision of Professors Carl V. Thompson and Tomas Palacios on high electron mobility devices. Currently, Dr. Tan is an Associate Professor in the Department of Materials Science and Engineering at the National University of Singapore. He is also the founder of Ultra Private Limited, a spin-off company focused on the commercialization of a super-hygroscopic material. In addition to his academic role, Dr. Tan is actively involved in scholarly publishing, serving on the editorial board of Scientific Reports and as an advisor for Device and Energy Technology. His research has garnered recognition, with publications in prestigious journals such as Nature Review Materials, Nature Electronics, Nature Sustainability, Nature Water, Nature Communications, and Science Advances.