Speaker: HEEKYEONG PARK
Topic: LAYERED NANOMATERIALS-BASED THIN-FILM TRANSITORS FOR NEXT GENERATION ELECTRONICS
Date: THURSDAY MAY 12, 2022
Time: 10:00 – 11:00 am
Zoom: https://uwaterloo.zoom.us/j/92809301771?pwd=disxRWhZS0lPZnBPMWJKV2FVMGJUUT09
Meeting ID: 928 0930 1771
Passcode: 721904
Abstract:
The current electronics industry has been dominated by silicon due to low manufacturing cost. However, demand for novel materials beyond silicon is increasing to create new functional electronics that cannot be achieved using silicon. Layered two-dimensional (2D) semiconducting nanomaterials, such as graphene and transition metal dichalcogenides (TMDCs), have the potential to advance next-generation electronics based on their unique electrical, optical, and mechanical properties. Developing 2D materials-based electronics is still in an early stage, and numerous fundamental and engineering challenges need to be addressed.
In this presentation, I will introduce our research on 2D nanomaterials-based electronics from a material growth to various device applications, including optoelectronics, bioelectronics, and chemical sensors. The synthesis of large-scale 2D materials is essential to translate their intriguing properties into various functional electronics. We successfully synthesized 4-inch wafer-scale uniform and high-quality 2D materials using a two-step synthesis process combined with physical vapor deposition and chemical vapor deposition. We developed thin-film transistors (TFTs) based on 2D materials for image sensors, biosensors, and chemical sensors. The fundamental limitations of the 2D materials-based sensors and the ways to overcome these problems via a nanoscale structural engineering will be introduced. Based on my research background, I will discuss about future research directions for intelligent and human-friendly electronic systems based on nanomaterials, such as TFTs-based circuit applications, point-of-care bioelectronics, and wearable optoelectronics. I believe that this systemic research from the material growth to practical applications can provide useful engineering solutions for next-generation nanoelectronics through an in-depth fundamental understanding of the thin-film nanomaterials and a proposal of new engineering approaches.
Biography:
Heekyeong is a Postdoctoral Researcher in Harvard Institute of Medicine at Harvard Medical School, Harvard University (USA), where her research focuses on the development of a biosensor system for detection of exosomal DNA. She completed a Ph.D. in Materials Science and Engineering at Sungkyunkwan University (South Korea) in 2020 and a B.S. in Electronics and Radio Wave Engineering at Kyung Hee University (South Korea) in 2015. Her research interests include the development of intelligent and human-friendly electronic systems based on nanomaterials, especially TFT-based circuits, bioelectronics, and optoelectronics. She successfully developed a wafer-scale synthesis technique of 2D material for TFTs-integrated electronic circuit. She accomplished the development of high-performance bioelectronics and optoelectronics based on 2D material TFTs by introducing a nanoscale structural engineering of 2D materials. Moreover, she fabricated a prototype flexible point-of-care bioelectronic chip by a system-level integration of flexible TFTs with read-out circuit, which was selected as a cover article of Nano Research in 2017. She has published 14 relevant papers in peer-reviewed journals, such as ACS Nano, NPJ 2D Materials and Applications, and NPJ Communications Materials, and 25 conference presentations.
All are welcome!