In the era of the Internet of Things, portable electronic technology can help citizens to avail advanced features and characteristics in different facets of their daily life. These electronics powered by energy storage devices need regular recharging, but the increasing demand for continuous operation is driving research into new power supplies that can deliver stable electricity. One major development has been a conceptual shift away from grid supply charging toward self-charging. Triboelectric nanogenerators (TENGs) are emerging as a power supply for self-charged electronics due to their lightweight, simple fabrication, diversity in material selection, and high energy conversion efficiency, but the power output of TENGs needs to be trimmed to stably power the electronics. In this talk, I will address several strategies for power management of TENGs to achieve high-performing self-chargeable electronics, including current output boosting, ion-assisted contact electrification, and energy storage control.
Professor Dong-Myeong Shin is currently an Assistant Professor of Mechanical Engineering at the University of Hong Kong (HKU). He was inspired to work in nanomaterials at Pusan National University (Ph.D., 2016). Following his Ph.D., in 2017, he moved to the University of California, Berkeley as a postdoctoral scholar. Upon completion of his postdoctoral studies in the summer of 2019, Dong-Myeong traveled back to Asia to assume his current position, where his group has devoted to developing self-powered nanoelectronics, with an emphasis on important components such as energy harvesting/storage devices and bioinspired electronics.
Clean water and clean air are vital for public health. This project focuses on developing high-efficiency and environmentally sustainable filters for removing harmful air/water pollutants. The team has developed novel architectures and functionalities for the filters to achieve high permeance, high removal efficiency, and excellent reusability.
