Professor Thevamaran’s laboratory focuses on advancing the fundamental knowledge of process-structure-property-function relations in structured materials and creating innovative structured materials with extreme mechanical properties. Recent advancements in material fabrication technologies allow us to control the physical properties and the geometry of constituent structural features, and their organization across different lengthscales to develop structured materials with superior bulk properties for desired applications. This new approach blurs the boundary between a material and a structure, and enables the creation of structured materials with remarkable properties that are not readily found in common materials. Successful development of such materials with superior bulk properties requires a thorough fundamental understanding of material behavior over multiple lengthscales—from nanometers to several millimeters—across different response timescales—from nanoseconds to several minutes.
We use various synthesis techniques to fabricate structured materials with optimally tailored constituent features in multiple lengthscales, and use a variety of mechanical characterization techniques to investigate their responses under different external loading conditions—from quasistatic to highly dynamic. We also use in-situ high-speed microscopy, scanning and transmission electron microscopy, and X-ray scattering techniques to characterize the samples’ structure and morphology as well as the different modes of deformation that occur during external loading. The key fundamental understanding developed in these studies will enable us to develop structured materials with superior specific properties for extreme applications such as protecting humans and engineering systems from impact, shock, and vibrations, and developing ultra-strong and -tough microelectromechanical systems, robots, biomedical implants, and surface coatings.
Our shock metamorphism experiments suggest Coesite forms in Opal-A at low pressures in contrast to previous believes
Our study published in ACS Earth and Space Chemistry suggests that Coesite forms in Opal-A at low pressures than what was previously thought. Opal-A is a hydrated amorphous silica species and a widespread mineraloid on Earth’s …July 7, 2020
Congratulations to Kyle for winning the prestigious 2020-21 Hilldale Undergraduate Research Fellowship. This award will support his research in our lab on PT-symmetric metamaterials.May 4, 2020
Dr. Jizhe Cai, a postdoctoral research associate in our lab has published his work on semicrystalline polymer thin films in Nano Letters. Congratulations, Jizhe! Read the paper here: https://pubs.acs.org/doi/10.1021/acs.nanolett.0c00066April 29, 2020
Professor Thevamaran gives an invited talk at the International Conference on Plasticity, Damage, and Fracture (Plasticity 2020)
Professor Thevamaran presents our research on gradient-nanograined structure and phase transformation metal microparticles impacted at high velocities at the International Conference on Plasticity, Damage, and Fracture (Plasticity 2020).January 6, 2020
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We are always looking for talented and highly motivated students interested in the research focus of the Thevamaran Lab. If you are interested in joining our laboratory, please send a brief email explaining your research experience and interests along with your CV to Professor Thevamaran. To join Thevamaran Laboratory, students may apply to the PhD programs in any of the three departments: Engineering Physics, Mechanical Engineering, and Materials Science and Engineering.
A Postdoctoral Research Associate Position is available in Professor R. Thevamaran’s laboratory at the Department of Engineering Physics of the University of Wisconsin-Madison to study the dynamic behavior of hierarchical materials. The research will focus on design, synthesis, structural …June 30, 2020
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