Printed Electronics and Additive Manufacturing: Functional Materials, Processing Techniques, and Emerging Applications: Session V
Sponsored by: TMS Functional Materials Division, TMS: Thin Films and Interfaces Committee
Program Organizers: Tolga Aytug, Oak Ridge National Laboratory; Pooran Joshi, Elbit Systems of America; Rahul Panat, Carnegie Mellon University; Yong Lin Kong, University of Utah; Konstantinos Sierros, West Virginia University; Changyong Cao, Case Western Reserve University ; Dave Estrada, Boise State University; Ravindra Nuggehalli, New Jersey Institute of Technology
Wednesday 2:00 PM
March 22, 2023
Room: Sapphire 411B
Location: Hilton
Session Chair: Huanyu Cheng, The Pennsylvania State University; Ben La Riviere, Oak Ridge National Laboratory
2:00 PM Invited
Standalone Stretchable Device Platform for Human Health Monitoring: Huanyu Cheng1; 1Pennsylvania State University
Conventional electronics today form on the planar surfaces of brittle wafer substrates and are not compatible with 3D deformable surfaces. As a result, stretchable electronic devices have been developed for continuous health monitoring. Practical applications of the next-generation stretchable electronics hinge on the integration of stretchable sustained power supplies with highly sensitive on-skin sensors and wireless transmission modules. This talk presents the challenges, design strategies, and novel fabrication processes behind a potential standalone stretchable device platform that (a) integrates with 3D curvilinear dynamically changing surfaces, and (b) dissolves completely after its effective operation. The resulting device platform creates application opportunities in fundamental biomedical research, disease diagnostic confirmation, healthy aging, human-machine interface, and smart internet of things.
2:25 PM Cancelled
3D Printable Silicone Elastomeric Pneumatic Actuators with Embedded Sensors: Derrick Banerjee1; John Burke1; Craig Joiner1; Akshay Kakar1; Han Mei2; Chih-Hung Chang2; James Neilan3; Jennifer Jones4; Curtis Hill4; Edward Sabolsky1; Konstantinos Sierros1; 1West Virginia University; 2Oregon State University; 3NASA Langley Research Center; 4NASA Marshall Space Flight Center, Jacobs Space Exploration Group (ESSCA)
Additive manufacturing has advanced in its applicability to a wide range of materials in recent years, especially for the liquid extrusion-based technology of direct ink writing (DIW). In particular, there have been a number of soft multi-material multifunctional systems developed for applications ranging from health monitoring to soft robotics. In this work we have developed a DIW printer that can deposit on-demand multi-material and gradient properties within a single nozzle. This technology is used to print modular silicone elastomeric robotic actuators with embedded sensors. These smart soft robotic parts have combinations of customizable geometries, sensing capabilities, and mechanical performance not achievable by traditional or other additive manufacturing methods. We further demonstrate the design of the configurable modular actuators through simulations as well as printed assemblies and manipulation with pneumatic pressure. The hybrid ink technologies and thermoset elastomer DIW processing discussed are broadly applicable to many other multi-material systems.
2:45 PM
Detection of Corrosion Using an Additively Printed Microsensor for Bluetooth Use: Holly Martin1; Stephen Appiah1; Brendan Kuzior1; Vamsi Borra1; Frank Li1; Pedro Cortes1; 1Youngstown State University
Detection of corrosion in oil pipelines using real time monitoring allows for the recognition of developing issues before failure can occur. While there are many different methodologies to detect corrosion, which exploit changes in structural, chemical, and electrical properties, real-time detection can be more difficult to achieve. Optimizing continuous contact between a copper wire and steel, while reducing or preventing galvanic corrosion, as well as developing a microsensor, are vitally important, especially for utilization in current designs. This project focuses on developing an additively manufactured Bluetooth microsensor, that can detect corrosion and send that information to an operator’s phone. Changes caused by corrosion will be detected by the microsensor, including uniform corrosion and localized corrosion, such as pitting, to alert the operator of developing issues and allow for replacement before failure. Detection of corrosion will be performed by monitoring electrical property changes of the metal, including resistance, impedance, and conductance.
3:05 PM
Thermal, Hydrothermal, and Ultraviolet Aging of ePTFE/FR PU/Nomex® IIIA Moisture Barrier Used in Firefighters’ Protective Clothing: Laura Munevar-Ortiz1; John Nychka1; Patricia Dolez1; 1University of Alberta
Moisture barrier (MB) is an essential layer in firefighters’ protective clothing because it prevents liquid entry while allowing perspiration to exit. It has been shown that aging negatively impacts MB performance. This study aims at examining the effect of accelerated thermal, hydrothermal, and ultraviolet (UV) aging on the tear force, water vapour transmission rate (WVTR), and apparent contact angle of ePTFE/FR PU/Nomex®IIIA MBs. The aging conditions were selected considering the conditions faced by firefighters. The tear force and WVTR were measured following ASTM D5587 and ASTM E96, respectively. It was found that the MBs retained 70% of their original tear force after thermal aging, 80% after hydrothermal aging, but only 15% after UV aging at the longest aging time. The WVTR increased when the MB was hydrothermal aged and increased/decreased when it was thermal aged. These preliminary results demonstrate the importance of better characterizing and understanding the MB aging behaviour.