Frontiers of Materials Award Symposium: 2021 Functional Nanomaterials: Translating Innovation into Pioneering Technologies: Session I
Program Organizers: Huanyu Cheng, Pennsylvania State University
Monday 8:30 AM
March 15, 2021
Room: RM 7
Location: TMS2021 Virtual
8:30 AM
Introductory Comments: Frontiers of Materials Award Symposium: 2021 Functional Nanomaterials: Translating Innovation into Pioneering Technologies: Huanyu Cheng1; 1Pennsylvania State University
Introductory Comments
8:35 AM Invited
Bio-inspired Artificial Vision and Wirelessly-integrated Wearable/Implantable Device: Dae-Hyeong Kim1; 1Seoul National University
Despite recent progresses, significant challenges still exist in developing a miniaturized and lightweight type of artificial vision that features wide field-of-view (FoV), high contrast, and low noise. Meanwhile, the wireless integration of wearable devices with implantable devices can present a new opportunity in the development of unconventional biomedical electronic devices. In this talk, recent progresses in the bio-inspired artificial vision and the wirelessly-integrated bioelectronics will be presented. In the first part, a fish-eye-inspired camera integrating a monocentric lens and a hemispherical silicon-nanorod photodetector array will be presented. In the second part, a bioelectronics device that consists of a soft implantable drug delivery device integrated wirelessly with a wearable electrophysiology sensing device will be presented. These novel types of device are expected to provide new opportunities for the next generation bio-inspired electronics and bio-integrated electronics.
9:15 AM Invited
Graphene and 2D Materials for Wearable Electronic Devices and Biosensors: Jong-Hyun Ahn1; 1Yonsei University
Rapid advances in synthesis of graphene and 2D materials, and fabrication methods for functional devices enable sophisticated types of functionality and their application to various emerging electronics, such as flexible, wearable and optoelectronic applications, that cannot be addressed with conventional materials. In this talk, I present that two-dimensional semiconductor/semi-metal materials can play critical roles in this context, through demonstrations of complex, mechanically assembled electronic and optoelectronic devices for flexible and wearable applications. Specifically, the mechanics of graphene and MoS2 can yield various devices in distinct, engineered wearable geometries that cannot be easily reproduced with conventional materials and/or conventional device layouts. Examples of devices include touch, tactile sensors, wearable OLED display, and brain signal sensing devices.
9:55 AM Invited
The Science of Contact-electrification and the Technology of Triboelectric Nanogenerators: Zhong Wang1; 1Beijing Institute of Nanoenergy and Nanosystems; Georgia Institute of Technology
Contact electrification (CE) (or usually called “triboelectrification”) effect, the most fundamental effect for electricity, has been known for over 2600 years since ancient Greek time, but its scientific mechanism remains unclear. The study of triboelectrification is recently revived due to the invention of the triboelectric nanogenerators (TENGs) by using the coupling of triboelectrification and electrostatic induction effects, which is the most effective approach for converting mechanical energy into electricity for powering small sensors. TENG is playing a vitally important role in the distributed energy and self-powered systems, with applications in internet of things, environmental/infrastructural monitoring, medical science, environmental science and security. In this talk, we first present the physics mechanism of triboelectrification for general materials. Our model is extended to liquid-solid contact electrification, reviving the classical understanding about the formation of electric double layers. Secondly, the fundamental theory of the TENGs is explored based on a group of reformulated Maxwell equations.
10:35 AM Invited
Conformal Bioelectronic Interfaces: Xiaodong Chen1; 1Nanyang Technological University
Smart sensors not only enrich daily lives by providing enhanced smart functions, but also provide health information by monitoring body conditions. For example, patchable sensors have the potential to better interface with human skin, thus improving the sensitivity of detection of health indicators. However, the crucial aspects toward the advancement of such sensors rely on the development of novel mechanically durable materials, which allow maintaining the function under the deformed states. In this talk, I will present our latest progress on building conformal bioelectronic interfaces, manufacturing conformal sensors and their integration of individual devices into systems.
11:15 AM Invited
Flash Joule Heating as a Rapid Solvent-free Scalable Route to New Materials: James Tour1; 1Rice University
Methods using flash Joule heating will be discussed to convert any carbon source into flash graphene, a turbostratic graphene that easily disperses in solvents and upon compounding. Scaled syntheses will be shown. Similar flash Joule heating routes will be shown for the preparation of other 2D materials, unusual phases of inorganics materials, and metal recovery from waste.