SUNMONTUEWEDTHUFRISAT
Events for April
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Advanced Manufacturing Seminar
Fri, Apr 02, 2021 @ 10:00 AM - 11:30 AM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Placid M. Ferreira, University of Illinois at Urbana-Champaign
Talk Title: Solid Ionics-Based Nanomanufacturing
Abstract: Mechanics and transport at the micro- and nanoscale offer a rich set of controllable phenomena that can be exploited for the development of manufacturing processes, compatible with these scales. Here, we exploit ionic transport in solids as the basis of highly controllable, efficient, high-resolution, high throughput nanomanufacturing processes for producing metallic (specifically silver and copper) nanostructures. This talk will focus on the exploitation of the high room-temperature ionic conductivity of silver and copper-based superionic glasses as the basis of subtractive and additive nano-manufacturing processes such as superionic imprinting/stamping, roll patterning and direct writing. Taking a traditional manufacturing perspective, the talk will discuss tooling and tool materials; process characterization and rates; and tool wear with such processes. Applications and future directions for solid ionics-based nanomanufacturing processes will also be discussed.
Biography: Dr. Placid M. Ferreira is the Tungchao Julia Lu Professor of Mechanical Science and Engineering at Illinois. From 2003 to 2009, he was the director of the Center for Chemical-Electrical-Mechanical Manufacturing Systems (Nano-CEMMS), an NSF-sponsored Nanoscale Science and Engineering Center after which he served as the Head of the Department of Mechanical Science and Engineering at Illinois until August 2015. He graduated with a PhD in Industrial Engineering from Purdue University in 1987, M.Tech (Mechanical) from IIT Bombay, 1982 and B.E. (Mechanical) for University of Bombay in 1980. He has been on the mechanical engineering faculty at Illinois since 1987, serving as the associate head for graduate programs and research from 1999 to 2002. Professor Ferreira's research and teaching interests are in precision manufacturing and includes computer-controlled machines, nano-manufacturing and metrology. Professor Ferreira received NSF's Presidential Young Investigator Award in 1990, SME's Outstanding Young Investigator Award in 1991, University of Illinois' University Scholar Award in 1994, the ASME Ennor Award for Manufacturing Technology in 2014. He is also a Fellow of ASME, SME and AAAS. He has served on the editorial board of a number of manufacturing-related journals.
Host: Center for Advanced Manufacturing
More Info: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_T8lmZM0nQhC8VeooLUjTaA
Webcast: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_T8lmZM0nQhC8VeooLUjTaAMore Information: Adv Mfg Seminar S21_Placid Ferreira.pdf
WebCast Link: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_T8lmZM0nQhC8VeooLUjTaA
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: Please register for this webinar at: https://usc.zoom.us/webinar/register/WN_T8lmZM0nQhC8VeooLUjTaA
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Advanced Manufacturing Seminar
Fri, Apr 09, 2021 @ 10:00 AM - 11:30 AM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Sheng Xu, Assistant Professor, Department of NanoEngineering, University of California, San Diego
Talk Title: Advanced Manufacturing and Material Design for Soft Electronics: From the Skin to Below the Skin
Abstract: Soft electronic devices that can noninvasively and continuously acquire vital signs from the human body represent an important trend for healthcare. Combined strategies of advanced manufacturing and materials design allow the integration of a variety of components and devices on a soft platform, resulting in functional systems with minimal constraints on the human body. In this presentation, I will demonstrate a wearable multichannel patch that can sense a collection of signals from the human skin in a wireless mode. Additionally, integrating high-performance ultrasonic transducers on the stretchable substrate adds a new third dimension to the detection range of conventional soft electronics. Ultrasound waves can penetrate the skin and noninvasively capture dynamic events in deep tissues, such as blood pressure and blood flow waveforms in central arteries and veins. This soft platform holds profound implications for a wide range of applications in consumer electronics, sports medicine, defense, and clinical practices.
Biography: Dr. Sheng Xu is currently an assistant professor in the Department of Nanoengineering at the University of California San Diego. He received his B.S. in Chemistry from Peking University and Ph.D. in Materials Science and Engineering from Georgia Institute of Technology, followed by postdoctoral studies at the University of Illinois at Urbana-Champaign. His group is interested in developing new materials and fabrication strategies for soft electronics. His research has been presented to the Congressmen and Congresswomen as a testimony of NIH extramural research during a Congressional Hearing. He has been recognized by many awards, including NIH MIRA, NIH Trailblazer Award, Sloan Fellowship, Wellcome Trust Innovator Award, MIT TR35, and MRS Outstanding Young Investigator Award. He is an NAS Kavli Fellow and an NAE Frontier of Engineering. He serves Nano Research as a Young Star Editor.
Host: Center for Advanced Manufacturing
More Info: https://usc.zoom.us/webinar/register/WN_kMleLeQQSca4oToi6Xj8Nw
Webcast: https://usc.zoom.us/webinar/register/WN_kMleLeQQSca4oToi6Xj8NwMore Information: Adv Mfg Seminar S21_Sheng Xu.pdf
Location: Online event
WebCast Link: https://usc.zoom.us/webinar/register/WN_kMleLeQQSca4oToi6Xj8Nw
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/webinar/register/WN_kMleLeQQSca4oToi6Xj8Nw
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AME Seminar
Wed, Apr 14, 2021 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Nina Balke , Oak Ridge National Laboratory
Talk Title: A Nanoscale View on Electromechanical Phenomena
Abstract: The ability to transform electrical energy into mechanical energy and vice versa is the foundation to many technologies in the area of information and energy, such as sensors, piezotronics, energy harvesting, piezoelectric, electrochemical, and polymer actuators, and artificial muscles. Despite the importance of electromechanical phenomena and numerous applications, fundamental interdisciplinary studies needed to understand, and control electromechanical phenomena on the nanoscale are lacking. Atomic force microscopy (AFM) is well suited to measure local volume changes in the picometer range and has a lateral resolution of 10s of nanometer which makes this an ideal technique to address electromechanical phenomena on the nanoscale. Despite the technical advances and the development of new SPM-based characterization techniques, the quantification of functional material parameters based on electromechanical phenomena is still elusive. The lack of quantitative and accurate measurement can also lead to the misinterpretation of relevant material physics. Only if quantitative material parameters can be extracted, can a correlation of nanoscale structure-function relationships be derived, and AFM can be integrated with techniques probing smaller or larger length and time scales as well as theoretical efforts for a full information integration across different disciplines. I will give an overview over which electromechanical phenomena can be probed quantitatively including electro-chemo-mechanical coupling to understand local electrochemical reactions and processes in electrochemical capacitors. Then I will talk in depth about AFM and ferroelectric materials and how the quantitative measurement of piezoelectric material properties led to the discovery of layered 2D van der Waals ferroelectrics with highly unusual material properties and functionalities based on the presence of four polar phases and high ion conductivity. These materials demonstrate, for the first time, how physical order parameter can be controlled by ionic degrees of freedom which will open new concepts for functional heterostructures and electronic devices.
Biography: Nina Balke received her Ph.D in Materials Sciences from the Technical University of Darmstadt, Germany, in 2006. After being a Feodor-Lynen fellow of the Alexander von Humboldt foundation at the University of California in Berkeley she became a research staff at the Center for Nanophase Materials Sciences at Oak Ridge National Laboratory in 2010. She is specialized in nanoscale characterization of electromechanical effects and electro-chemo-mechanical coupling using atomic force microscopy in oxides and vdW layered materials. Her scientific focus includes ferroelectrics, dielectrics, and energy storage materials as well as in-situ characterization of solid-liquid interfaces.
Host: AME Department
More Info: https://usc.zoom.us/j/92982374143
Webcast: https://usc.zoom.us/j/92982374143Location: Online event
WebCast Link: https://usc.zoom.us/j/92982374143
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/92982374143
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Advanced Manufacturing Seminar
Fri, Apr 16, 2021 @ 10:00 AM - 11:30 AM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Denis Cormier, Earl W. Brinkman Professor, Rochester Institute of Technology
Talk Title: Metal Additive Manufacturing Via Jetting of Molten Metal Droplets
Abstract: This seminar will introduce attendees to an emerging metal additive manufacturing process that produces parts via on-demand jetting of molten metal droplets. Unlike traditional metal additive manufacturing processes such as powder bed fusion or binder jetting, the droplet jetting process uses wire, rather than powder, as the feedstock material. This greatly reduces cost and safety concerns. The absence of a powder bed also reduces feedstock carrying costs and eliminates complicated lot tracing procedures associated with blending of new and used powders. Process parameters such as drop size, jetting temperature, drop spacing, and jetting frequency all influence the dimensional accuracy, density, and mechanical properties of fabricated parts. An open architecture droplet jetting machine from Xerox (formerly Vader Systems) is used to demonstrate the influence of both process parameters and toolpath generation strategies on geometric accuracy, density, and microstructure of aluminum alloys.
Biography: Dr. Denis Cormier is the Earl W. Brinkman Professor of Industrial and Systems Engineering at Rochester Institute of Technology where he directs the New York State funded AMPrint Center for Advanced Technology. Dr. Cormier has worked in the area of 3D printing and additive manufacturing for 25 years. Since joining RIT in 2009, his research has focused on technologies such as multi-material inkjet deposition, direct-write processes including aerosol printing and microdispensing, and pulsed photonic sintering. Most recently, he has focused on development of a liquid metal droplet jetting additive manufacturing process. Prior to joining RIT, he was a professor at North Carolina State University from 1994 to 2009.
Host: Center for Advanced Manufacturing
More Info: https://usc.zoom.us/webinar/register/WN_3zuU3UdYSSKvT5CvyZuxow
Webcast: https://usc.zoom.us/webinar/register/WN_3zuU3UdYSSKvT5CvyZuxowMore Information: Adv Mfg Seminar S21_Denis Cormier.pdf
Location: Online event
WebCast Link: https://usc.zoom.us/webinar/register/WN_3zuU3UdYSSKvT5CvyZuxow
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/webinar/register/WN_3zuU3UdYSSKvT5CvyZuxow
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AME Seminar
Wed, Apr 21, 2021 @ 03:30 PM - 04:30 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Ashley Bucsek, University of Michigan
Talk Title: Probing Phase Transformations and Twinning Across Length Scales Using 3D X-Ray Microscopy
Abstract: Advanced materials are broadly defined as innovative materials that have atypical sizes, microstructures, and responses. These atypical characteristics enable major, previously impossible technological breakthroughs, yet many advanced materials owe their desirable properties to complex underlying micromechanics including twinning, detwinning, and martensitic phase transformations. Establishing the relationships between these local micromechanics and macroscopic material behavior is critical to accelerating the implementation of advanced materials. Toward these goals, we utilize modern 3D X-ray diffraction techniques that offer the capability to measure the deformation and microstructure evolution inside bulk materials, in situ, and across nine orders of magnitude in length scales (nm to mm). Measured quantities include the 3D microstructure map and spatially-resolved crystallographic orientation, elastic strain tensor, and phase fraction. These techniques can be used to simultaneously measure local microstructure events and the consequent macroscopic response, resulting in a tool uniquely suited for linking local micromechanics to material behavior. These capabilities will be illustrated using a number of research examples involving twinning and phase-transforming materials, using nickel-titanium shape memory alloys as a model material system. Ongoing and future work will also be discussed, including the development of a first-of-its kind laboratory-scale instrument to conduct 3D X-ray diffraction experiments in-house.
Biography: Ashley Bucsek is an assistant professor in Mechanical Engineering at the University of Michigan. Previously, she was a President's Postdoctoral Fellow at the University of Minnesota and a visiting scientist on beamline ID06 at the ESRF. She holds an MS and PhD from Colorado School of Mines and a BSE from the University of Wyoming. Bucsek's research combines 3D X-ray diffraction microscopy with micromechanical theory to study deformation and microstructure evolution in structural and functional materials. She is a regular user at the APS, CHESS, and the ESRF and is currently developing a laboratory-scale high energy diffraction microscopy microscope. Bucsek is also a board member on the ASM International Organization on Shape Memory and Superelastic Technologies, an editorial advisory board member of the Shape Memory and Superelasticity journal, an APS Imaging/Microbeam proposal review panel member, and a member of the DOE-funded PRISMS Center,
Host: AME Department
More Info: https://usc.zoom.us/j/95540575323
Webcast: https://usc.zoom.us/j/95540575323Location: Online event
WebCast Link: https://usc.zoom.us/j/95540575323
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/95540575323
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Advanced Manufacturing Seminar
Fri, Apr 23, 2021 @ 10:00 AM - 11:30 AM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Dr. Nathan Crane, Professor, Department of Mechanical Engineering Brigham Young University
Talk Title: From Promise to Production: Unleashing the Potential of Additive Manufacturing
Abstract: Additive Manufacturing (AM) burst onto the scene in the 1990s to great excitement about the new approach to product development and revolutionary products it would enable. While the opportunities for rapid prototyping have been largely realized, the ability to additively manufacture production parts has grown much more slowly. This talk will highlight key issues in process knowledge, production speed/quality, quality control, and functionality that hold the keys to broader implementation of AM in production and give examples of recent efforts to address some of these limitations touching on applications in polymers, metals, and printed electronics and compare the current status to biological fabrication methods.
Biography: Dr. Nathan Crane joined the faculty of the BYU as professor of mechanical engineering in 2018 after 12 years at the University of South Florida. Dr. Crane completed a Ph.D. degree in Mechanical Engineering with a minor in Materials Science at the Massachusetts Institute of Technology in 2005 and earned his B.S. and M.S. degrees in Mechanical Engineering at Brigham Young University in Provo, UT in 1998 and 1999 respectively. He has worked in industry (Caldera Engineering and Pratt and Whitney Aircraft) government (Sandia National Laboratories, Los Alamos National Laboratories), and academia. He is also associate editor of the Elsevier Additive Manufacturing journal. His interests lay in the areas of design, materials and advanced manufacturing with a particular interest in additive manufacturing (AM) and digital microfluidics. His work focuses on applying material science, mechanical design, and processing science to enable novel manufacturing processes.
Host: Center for Advanced Manufacturing
More Info: https://usc.zoom.us/webinar/register/WN_Y5Tl4puUT36axYDkjQaMxw
Webcast: https://usc.zoom.us/webinar/register/WN_Y5Tl4puUT36axYDkjQaMxwMore Information: Adv Mfg Seminar S21_Nathan Crane.pdf
Location: Online event
WebCast Link: https://usc.zoom.us/webinar/register/WN_Y5Tl4puUT36axYDkjQaMxw
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/webinar/register/WN_Y5Tl4puUT36axYDkjQaMxw
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AME Seminar
Wed, Apr 28, 2021 @ 11:00 AM - 12:00 PM
Aerospace and Mechanical Engineering
Conferences, Lectures, & Seminars
Speaker: Jing Liu, Postdoctoral Scholar Department of Aerospace and Mechanical Engineering USC
Talk Title: Wearable Opto-mechanical System for Cardiovascular Monitoring: From Methodological Design to Device Development
Abstract: Cardiovascular diseases (CVDs) are the leading cause of death and disability worldwide. There are about 47% of sudden cardiac deaths occurring outside a hospital, which reveals the demand for wearable medical devices that can monitor the cardiovascular risk factors of individuals frequently, accurately, and unobtrusively in their daily life. At the same time, the use of wearable medical devices allows healthcare givers to assess patient health conditions and provide medical guidance in a timely and non-contact way.
The photoplethysmography (PPG) sensor composed of light-emitting diode and photodetector has been widely adopted by various wearable ï¬tness trackers owing to its low cost, compact size and ease of use. However, so far, the applications of PPG are mainly limited to heart rate and blood oxygen saturation measurement. By utilizing the wavelength dependence of the light penetration depth into the skin, we have developed a multi-wavelength PPG (MWPPG) sensing approach which allows for probing blood pulsations in different types of skin blood vessels.
In this talk, two MWPPG applications for cardiovascular monitoring will be presented: 1) cuffless arterial blood pressure measurement with a single MWPPG sensor; and 2) an opto-mechanical device equipped with an MWPPG sensor to enable arterial and capillary blood pressure measurement.
Biography: Jing Liu is a postdoctoral scholar in the Department of Aerospace and Mechanical Engineering, University of Southern California. She received her Ph.D. in Electronic Engineering from the Chinese University of Hong Kong in 2018 and her B.S. degree in Computer Science from Wuhan University in 2014. Her main achievements include the inventions of multi-wavelength photoplethysmography for wearable blood pressure monitoring, which is under commercialization in the Hong Kong Technology Start-up Support Scheme for Universities Programme. Her current research interests are cardiac modeling, physiological signal processing, and machine learning for cardiovascular health informatics.
Host: AME Department
More Info: https://usc.zoom.us/j/97098541679
Webcast: https://usc.zoom.us/j/97098541679Location: Online event
WebCast Link: https://usc.zoom.us/j/97098541679
Audiences: Everyone Is Invited
Contact: Tessa Yao
Event Link: https://usc.zoom.us/j/97098541679
