[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. Ryan Wagner Research Assistant Professor, School of Mechanical Engineering October 29th, 2020 | 12:00pm Join Zoom: https://purdue-edu.zoom.us/j/93857631004 Title: Atomic force microscopy as a tool for multiphysics nanoscale characterization Abstract: An atomic force microscope (AFM) consists of a sharp cantilever mounted tip interacting with a sample. This microscope is capable of topographic imaging of samples down to atomic resolution. Additionally, the physical interactions between the tip and sample can be leveraged to investigate a variety of multiphysics problems. AFM can measure the nanomechanical elasticity, viscoelasticity, adhesion, and failure of nanoscale structures. It can map conductivity, surface potential, and piezoelectric response with nanoscale resolution. It can probe the distribution of chemical species on a surface. In this talk, I will highlight my past research efforts that have touched on characterizing these different physical properties with AFM. This includes studying the nanomechanical properties of cellulose with force-displacement curves, measuring the ferroelectric response of hafnium oxide thin films with piezoresponse force microscopy, and mapping the distribution of active shampoo ingredients on hair with atomic force microscopy mass spectrometry. These research efforts have focused on advancing AFM's capabilities in performing these diverse types of measurements on very different samples. [cid:image002.jpg@01D6AC4A.D2CA29B0] Figure 1: Examples of different AFM multiphysics measurements. a) Elasticity and failure of a cellulose nanocrystal 1. b) Ferroelectric polarization of a hafnium oxide thin film 2. Chemical map of Bis- aminopropyl dimethicone (active shampoo ingredient) on a hair sample 3. Bio: Ryan Wagner is a Research Assistant Professor in the School of Mechanical engineering at Purdue University. He received his PhD from Purdue in 2014 and afterward took postdoctoral appointments at the National Institute of Standards and Technology and Asylum Research, an AFM instrument manufacturing company. His research interests include nanotechnology, microscopy, interferometry, spectrometry, metrology, vibrations, and dynamics. 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 Xiulin Ruan, Professor, School of Mechanical Engineering First Principles and Machine Leaning Predictions of Thermal and Optical Properties, and the Developments of Radiative Cooling Paints 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 Nikhilesh Chawla, Ransburg Professor, School of Materials Engineering 2/25/21 3/4/21 David Cappelleri, Associate Professor of Mechanical Engineering Microrobotics Research Highlights 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/>
