[cid:image004.jpg@01D685C0.EB336F80] The BNC Virtual Faculty Seminar Series is designed to provide faculty a platform to present an overview of their research and the opportunity for collaborative discussion with other BNC faculty and researchers across six colleges and 15 academic units. Chi Hwan Lee Assistant Professor of Biomedical Engineering and Mechanical Engineering October 22nd, 2020 | 12:00pm Join Zoom: https://purdue-edu.zoom.us/j/93857631004 Title: Sticker-Like Flexible Sensors for Wearable Healthcare Applications Abstract: [cid:image003.jpg@01D6A6C3.557FCA00] The global market for wearable technology is anticipated to grow and reach $71.23 billion by 2021 according to the new market research report published by the Scalar Market Research. The most compelling version of wearable products demands prolonged contact to the human body enabling high-precision detection of biomechanical, biochemical, or/and electrophysiological signals associated with health and other conditions affecting wellbeing. In this field, the biggest challenge is that the rigid or semi-flexible form of microsystems and sensors do not interface well with the soft, irregular surface of the human body. This mechanical mismatch results in discomfort to users as well as low signal-to-noise ratios in the collection of data. In the first part of this presentation, I will talk about my recent approaches to tackle this challenge by developing mechanically soft, deformable forms of microsystems and sensors. These approaches involve the use of advanced nanoengineering technologies that incorporate desired electronic functionalities directly into commercially-available garments or pads that are capable of unobtrusively interfacing to a specific body part. These innovative microsystems and sensors are designed for durability to be repeatedly attached and detached to/from the skin without irritating the wearer and damaging the devices. In addition, these devices are featured with patient-centered designs to meet critically important user requirements, including (1) breathability for user comfort, (2) conformability to the irregular surface of the skin, and (3) deformability against natural body movements. In the second part of this presentation, I will introduce the recent development of next-generation eye-wearable microsensor platform. Despite significant progress, current state-of-the-art skin-wearable microsystems and sensors are primarily suited for larger body parts (e.g., the wrist, chest, and limbs), but not for the much smaller, softer, and exceptionally-sensitive human eyes. To address this unmet need, I develop new nanoengineering technology that enables turning commercially-available soft contact lenses into lifesaving tele-monitoring tools that can non-invasively, accurately, comfortably, and continuously diagnose the status of chronic ocular diseases, such as glaucoma. This approach is unique and innovative because it will be applicable to various materials and designs of soft contact lenses that offer excellent biocompatibility, softness, transparency, oxygen permeability, wettability, and are able to fit a variety of corneal shapes. This will eventually allow clinicians and researchers to better understand and intervene in several aspects of personal and population ocular health. I will present recent outcomes of comprehensive experimental, computational, and pre-clinical studies for several eye-wearable microsystems and sensors to discuss about the device reliability, batch production strategy, data acquisition methodology, and safety. In summary, I will introduce recent research programs that make a significant paradigm shift from the current "skin-wearable" to "eye-wearable" biomedical devices using simple but effective microscale transducers. These research programs are novel and essential to the pursuit of advancing the field of microsystems and nanoengineering for their applications in wearable biomedical devices, pushing the disciplines forward, and bringing real impact to the society. Bio: Chi Hwan Lee is an Assistant Professor of Biomedical Engineering and Mechanical Engineering, and by Courtesy of Materials Engineering, and Speech, Language, and Hearing Sciences at Purdue University. He is also an Adjunct Assistant Professor of Optometry at Indiana University. Lee is the founding member and chief technical officer of Curasis, LLC and Rescue Biomedical, LLC and founding member and scientific advisor of Omniply Tech by Tandem Launch, Inc. He completed his postdoc in materials engineering at the University of Illinois at Urbana-Champaign, received his PhD and MS in Mechanical Engineering from Stanford University and BS in Mechanical Engineering from Illinois Institute of Technology. Upcoming BNC Virtual Faculty Seminars, Fall 2020: Date Faculty Title 9/10/20 Ali Shakouri, Director of Birck Nanotechnology Center Overview of SMART Industry Consortium 9/17/20 Luna Lu, Professor of Civil Engineering - *Note time change* (10am - 11am): Co-Hosted with ECE Nanotechnology for Energy Harvesting and Sensing Applications 9/24/20 Alex Ma, Assistant Professor of Physics and Astronomy Superconducting circuits for quantum simulation and quantum information sciences 10/01/20 Hadiseh Alaeian, Assistant Professor of Electrical and Computer Engineering atom-Nanophotonics at low dimensions 10/08/20 Jianguo Mei, Assistant Professor, Department of Chemistry Semiconducting Polymers: A Journey from Scientific Curiosity to Technology Commercialization 10/15/20 Chen-Lung Hung, Assistant Professor of Physics and Astronomy Engineering atom-nanophotonics hybrid lattices 10/22/20 Chi Hwan Lee, Assistant Professor of Biomedical Engineering and Mechanical Engineering Sticker-Like Flexible Sensors for Wearable Healthcare Applications 10/29/20 Ryan Wagner, Research Assistant Professor, School of Mechanical Engineering Atomic force microscopy as a tool for multiphysics nanoscale characterization 11/5/20 Arnab Banerjee, Assistant Professor of Physics and Astronomy Co-design towards exotic spin-based systems and devices 11/12/20 Krishna Jayant, Professor of BME - *Note time change* (10am - 11am): Co-Hosted with ECE 11/19/20 David Cappelleri, Associate Professor of Mechanical Engineering Spring 2021 Schedule: Date Faculty Title 2/4/21 Yi Xie, Assistant Professor, School of Nuclear Engineering Degradation of Structural Materials and Fuels in Nuclear Systems 2/11/21 Letian Dou, Assistant Professor, Davidson School of Chemical Engineering Organic-Perovskite Hybrid Quantum Wells, Heterostructure, and Optoelectronics 2/18/21 2/25/21 3/4/21 3/11/21 Stylianos Chatzidakis, Assistant Professor, School of Nuclear Engineering 3/18/21 Reading Day 3/25/21 Tyler Tallman, Assistant Professor, School of Aeronautics and Astronautics 4/1/21 4/8/21 4/15/21 4/22/21 4/29/21 Dead Week 5/6/21 Finals Week Thanks! Jaime Turner Lead Administrative Assistant to the Director | Birck Nanotechnology Center BRK | 1205 W State Street | West Lafayette, IN 47907 o: 765-494-3509<tel:7654943509> | m: 765-491-3064<tel:7654913064> | jjturner@purdue.edu<mailto:jjturner@purdue.edu> [83324AA6]<https://www.purdue.edu/>
