Congratulations and good luck to Nikola Bosnjak for his new job at Nike!
Congratulations to mechanical engineering PhD candidate Zhongtong Wang for passing his A-exam earlier this week! Zhongtong’s PhD will be on “Constitutive Modeling of Polymers and Polymer Composites with Dynamic Bonds.”
Mechanical engineering PhD students Max Tepermeister and Zhongtong Wang, and MS student Jinyue Dai all presented at ASME’s International Mechanical Engineering Congress and Exposition in Columbus, Ohio last week.
Incorporation of reversible crosslinks into polymers is an effective approach for tailoring their mechanical properties and to realizing behavior like self-healing, shape memory, and pH sensitivity. Among various reversible crosslink types, ionic bonds are particularly interesting because of their biocompatibility, saloplasticity, and relevance for energy conversion technologies. Understanding the structure-function relationship of such polymers is important for future development of advanced materials. In our latest paper, led by PhD candidate Hongyi Cai, we address this question by designing and characterizing a series of highly stretchable elastomers inspired by polyelectrolyte complexes. We demonstrate how ionic bonds formed among polymer chains strengthen the elastomers and also help them recover.
Welcome to new MMD lab members: postdocs Si Chen and Robert Wagner and PhD candidate Ellen van Wijngaarden! And good luck to MMD alums Srikar Srivatsa and Xinyue Zhang with their new awesome west coast careers!
Congratulations to now former graduate student Srikar Srivatsa for successfully defending his Masters thesis last week!
MMD lab graduate Michael Buche just published work started in his PhD thesis in Physical Review E. “Freely jointed chain models with extensible links” presents how to derive asymptotically correct analytical expressions for the force-stretch relationships for polymer chains with extensible bonds utilizing statistical thermodynamics. This work was co-authored with Prof Silberstein and fellow Cornell Theoretical and Applied Mechanics graduate Scott Grutzik.
The design of functional and soft ionotronic devices has gained a considerable interest over the last decade, with applications ranging from sensing and energy harvesting to drug delivery. The coupled electrochemical and mechanical response of soft ionic polymers plays a pivotal role in the operation of many such devices and presents a significant challenge for design evaluation. In our new publication in the Journal of the Mechanics and Physics of Solids, we report on a multiphysics model and a finite element approach for solving electro-chemo-mechanical problems. This computational study led by Nikola Bosnjak and Max Tepermeister investigates the mechanisms underlying the operation of ionotronic devices, and paves the way for reliable development of novel devices through finite element analysis.
Ever wonder how to conceptualize and formulate a continuum scale material model that captures the critical physics? Want to learn how really understand constitutive theory papers? Prof Silberstein will be teaching State Variable Modeling this fall. See the syllabus for more information.
Prof Silberstein attended and presented a poster with Dr. Joy Zhang’s work at the GRC “Microbial Stress Response: Bacterial Mechanisms for Sensing, Responding and Adapting to Stress” last week.