People

Principal Investigator

Kathryn (Katie) Matlack

Associate Professor; Richard W. Kritzer Faculty Scholar

Department of Mechanical Science and Engineering
University of Illinois at Urbana-Champaign
Office: 3046 Sidney Lu Mechanical Engineering Building
Address: 1206 W. Green St, Urbana, IL 61801

kmatlack (at) illinois (dot) edu

Google Scholar

Department Webpage

Education

  • Ph.D. Mechanical Engineering, Georgia Institute of Technology, 2014
  • M.S. Mechanical Engineering, Georgia Institute of Technology, 2013
  • B.S. Mechanical Engineering, Massachusetts Institute of Technology, 2008

Academic Positions

  • Associate Professor, Richard W. Kritzer Faculty Scholar, Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, August 2023 – present.
  • Assistant Professor, Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, January 2017 – 2023.
  • ETH Postdoctoral Fellow, Department of Mechanical and Process Engineering, ETH Zürich, August 2014 – December 2016.

Visiting Scholars

Dr. Alfredo Fantetti (Independent Research Fellow, Imperial College London)
Email: afante2@illinois.edu

I currently hold a four-year Research Fellowship in the Tribology Group at Imperial College London to perform independent research, and I am visiting the WPM lab for a semester. If you would like to collaborate with me, my expertise is in the nonlinear dynamic testing and modeling of jointed structures and I am interested in tribology (physics of frictional contacts), nonlinear dynamics (how friction affects the global dynamics of structures) and wave propagation (ultrasound and solitary waves).

The aim of my work is to gain a better understanding of the friction contacts in assembled structures subjected to vibration. This is needed to enable a reliable stress and fatigue analysis of the components. During my PhD, I was involved with the structural dynamics of aircraft engines, with a special focus on their nonlinear contact interface behaviour.

I am currently visiting the WPM lab since I recently started collaborating with Prof. Matlack on metamaterials (granular crystals). While at the WPM lab, I will design a build an experimental rig to test the capability of solitary waves to monitor friction for vibration applications.

Postdoctoral Scholars

Dr. Vinod Ramakrishnan (Postdoctoral Researcher, Mechanical Science and Engineering)
Email: vinodr@illinois.edu

I joined the Wave propagation and metamaterials lab in September 2023 after completing my PhD in Mechanical Engineering from the University of California San Diego. My thesis research focused on ‘Phase transition and domain wall control in multistable metamaterials’. In providing several strategies to realize and control the phase morphologies within multistable metamaterials, my dissertation promotes their adoption for applications in energy harvesting, mechanical memory devices and deployable structures. As a postdoc in the WPM lab, I’m exploring fluid-metamaterial interaction models for passive flow control applications, where the devised metamaterial architecture customizes the fluid-structure coupling and enables control of the flow characteristics (e.g., transition, separation). Besides research, I like to play tennis, read books in the history, adventure and fantasy genres, cooking, hiking and Vedic chanting.

Graduate Students

Elizabeth (Betsy) Smith (Ph.D. Candidate, Mechanical Science and Engineering)
Email: esmith19@illinois.edu

I completed a B.S. in Mechanical Engineering in 2015 at the University of Wyoming. In the Fall of 2018, I joined the Wave Propagation and Metamaterials Lab working on determining damage in materials using linear and nonlinear ultrasound. Before coming to Illinois, I worked at Puget Sound Naval Shipyard on Main Propulsion Systems. In addition to academics, I enjoy playing music, hiking, learning how to sail, and swing dancing.

Nusrat Jahan Salim (Ph.D. Candidate, Mechanical Science and Engineering)
Email: njsalim2@illinois.edu

I completed my BS in Mechanical Engineering in 2017 from Bangladesh University of Engineering and Technology (BUET) and worked as a lecturer in the same institution for roughly three years after graduating. Prior to joining the Wave Propagation and Metamaterials Lab, I have worked on modifying the band-gap of zinc oxide semiconductor with the inclusion of reduced graphene oxide. My primary research interests are in the field of multifunctional materials and mechanics of materials. I spend my leisure time writing stories and watching movies.

Sangwon Park (Ph.D. Student, Mechanical Science and Engineering)
Email: sangwon7@illinois.edu

I joined WPML in Summer 2021 after completing my B.S. and M.S. in Mechanical Engineering at Yonsei University, Seoul, Korea. During my master’s study, I focused on structural vibration and vibro-acoustics. My current research interest is in phononic materials for flow control, and I aim to elucidate the complicated fluid-structure interaction between the phononic materials and the flow. My goal requires both computational and experimental approaches. Other than research, I try to work out on a weekly basis and enjoy playing soccer and biking in my spare time. I’m also into filming and video editing.

Hyelim Do (Ph.D. Candidate, Mechanical Science and Engineering)
Email: hyelimd2@illinois.edu

I completed my B.S. in Energy Resources Engineering and M.S. in Computational Science and Technology from Seoul National University. During the first year of my master’s, I participated in a project focused on seismic propagation modeling and inversion algorithms using FDM and FEM. After that, I worked for the Korea Institute of Science and Technology to conduct interdisciplinary research on physical modeling experiments with 3D printed results. My current research in WPML focuses on computational and experimental characterization of material properties and microstructure using linear and nonlinear ultrasound. In my free time, I enjoy tennis, pickleball, watching movies, and spending time with my friends.

Luis M. Baldelomar Pinto (Ph.D. Student, Mechanical Science and Engineering)
Email: luismb2@illinois.edu

I completed my B.S. in Mechanical Engineering in May 2021 at the University of Southern Indiana (USI). As an undergrad, I participated in a project focused on compliant mechanisms at USI. I also completed an online Summer Research Program at MIT with a project related to photobioreactors (2020). I joined the WPM Lab in Fall 2021. My current research focuses on the design of metamaterials for applications involving high strain-rate and high loading. During my free time, I enjoy reading, cooking, and watching documentaries and movies.

Md Kamruzzaman (Ph.D. Student, Mechanical Science and Engineering)
Email: mdk6@illinois.edu

I have completed my B.Sc and M.Sc. in Mechanical Engineering from Bangladesh University of Engineering and Technology (BUET) in 2016 and 2019 respectively. I also served in the same institution as a lecturer for almost five years. In my M.Sc. study, I worked on the thermal and mechanical cycling fatigue life calculation of electronic packages using finite element analysis. I joined the Wave Propagation and Metamaterials Lab in the Spring 2022 semester. My research mainly focuses on the study of nonlinear wave propagation in contact phononic materials. Besides studying, I like reading books and watching videos.

Taojun Wang (Ph.D. Student, Mechanical Science and Engineering)
Email: taojunw2@illinois.edu

I completed my B.S in Engineering Mechanics in 2020 at the University of Illinois at Urbana-Champaign. I worked in The Robotics, Automation, and Dance (RAD) Lab when I was in undergraduate school. I joined the Wave Propagation and Metamaterials Lab in Summer 2022. My current focus area is wave propagation and energy transmission in nonlinear periodic material structures. Besides the research, I enjoy hiking, cooking and photography.

Yichen Shi (Ph.D. Student, Mechanical Science and Engineering)
Email: yichens6@illinois.edu

I completed my Bachelor’s in ME from University of Illinois at Urbana-Champaign (UIUC) and Zhejiang University (ZJU) in 2023. Before joining the WPM Lab in summer 2023, I worked computationally on nonlinear dynamical systems, focusing on the instabilities and structures of periodic solutions. My current research interest lies in the interdisciplinary field of metamaterials, flow control, and fluid-structure interactions. Besides the research, I enjoy listening to music and cooking.

Allison Rzepka (Ph.D. Candidate, Mechanical Science and Engineering)
Email: rzepka2@illinois.edu

I completed a B.S. in Materials Science and Engineering at Cornell University with a minor in Fiber Science in 2020. During undergrad, I performed research exploring the mechanical response of composites and mechanically activated conductors. Prior to joining the Wave Propagation and Metamaterials Lab, I worked on ultra-high temperature materials for aerospace applications and was a peer reviewer for the Journal of the European Ceramics Society. My research with WPML focuses on a new class of metamaterials called Architected Granular Media (AGMs) and I explore their response under high impact loading conditions. In addition to academics, I’m a member of the Students Advising Graduate Education Board, and I enjoy staying active (boxing, hiking, soccer), and baking (pies, cakes, cookies).

Seyda Islam Emu (Ph.D. Student, Mechanical Science and Engineering)
Email: semu2@illinois.edu

I completed my B.S. in Mechanical Engineering from Bangladesh University of Engineering and Technology (BUET) in 2022 and joined WPML in Fall ’23. My Undergrad research was a simulation-based study on Direct Ink Writing (DIW), an extrusion-based Additive Manufacturing Process. My current research focuses on bulging and sloshing modes in liquid-solid metamaterials. In my free time, I like listening to music, reading books, and watching K-drama series. I am also enthusiastic about learning new languages and exploring new place.

Jean Myung Jung (Ph.D Student, Mechanical Science and Engineering)
Email: jmjung3@illinois.edu

I completed my B.S. in Engineering Mechanics in 2024 at the University of Illinois at Urbana-Champaign. I joined the WPML as undergraduate researcher in the 2023 spring semester. I worked with Dr. Connor Pierce and Ph.D. candidate Nusrat Salim on characterization of Magnetoactive Elastomers through Dynamic Mechanical Analysis (DMA) and vibration studies of DMA experimental setup. In the summer of 2022 and 2023, I trained as an undergraduate researcher at Acoustics and Vibration Laboratory in Seoul National University. Currently, my research focuses on interdisciplinary field of linear and nonlinear wave propagation, phononic structures, and stimuli-responsive materials. Besides academics, I love listening to music, watching films and sports highlights with my friends.

Undergraduate Students

Nate Scriba (B.S., Materials Science and Engineering)
Email: nscriba2@illinois.edu

I am currently working to pursue a B.S. Degree in Materials Science Engineering with a minor in Atmospheric Sciences. I joined the WPML in February 2023, and have since been working with Ph.D. student Betsy Smith designing and utilizing phononic sonic crystals to analyze the audible band gaps of different lattice metamaterial structures. Outside of the lab, I enjoy playing guitar, watching movies, and going on runs.

Hyunwoo Kwon (B.S., Mechanical Science and Engineering)
Email: hwkwon2@illinois.edu

I am a junior undergraduate student pursuing a B.S. degree in Mechanical Science and Engineering with a minor in Computer Science. I joined WPML lab on December 2023. I am currently working with Ph.D. student Connor Pierce to create an automated Dynamic Mechanical Analysis setup and a
dedicated MATLAB app platform for controlling the setup. In my free time, I enjoy learning more about coffee and going on workout and jogging sessions.

Rohit Choudhary (B.S., Engineering Mechanics)
Email: rohitkc2@illinois.edu

I am a Sophomore currently majoring in Engineering Mechanics with a minor in Computer Science. I joined the Wave Propagation and Metamaterials Lab in October of 2022 and began working with Ph.D. student Luis M. Baldelomar Pinto to explore the properties of metamaterials in various high strain-strain and high loading scenarios. In my free time, I enjoy cooking, listening to music, and watching football with friends.

Alumni

Postdoctoral scholars :

  • Dr. Itay Grinberg – System Engineer at Bruker Technologies Ltd, Israel
  • Dr. Chung Il Park

Graduate Students:

  • Dr. Joshua R Tempelman (Ph.D Student) – Postdoctoral Research Fellow, Los Alamos National Laboratory
  • Dr. Connor Pierce (Ph.D Student)
  • Dr. Ganesh Patil (Ph.D Student) – Postdoctoral Research Fellow, Mechanical Engineering, University of Michigan, Ann Arbor [Advisor: Prof. Bogdan Popa]
  • Dr. Ignacio Arretche (Ph.D. Student) – Postdoctoral Research Associate, Mechanical Engineering, Unviersity of Illinois, Urbana-Champaign [Advisor: Prof.Sameh Tawfick]
  • Dr. Changgong Kim (Ph.D. Student) – Samsung Electronics Co., Ltd.
  • Chaitanya Nimmagadda (M.S. Thesis) – Research Engineer at Ford Motor Company, USA
  • Han He (Masters Independent Study)
  • Dennis Scheglov

Undergraduate Students:

  • Madison Yang
  • Songyuan Cui – Ph.D. Student, Mechanical Science and Engineering, UIUC
  • Alexander Stevens – UIUC Undergraduate student
  • Nick O’Brien – Ph.D. Student, Carnegie Mellon University, Pennsylvania.
  • Ian Li – Ph.D. Student, University of California, Berkeley.
  • Tommy Block – Mechanical Engineer at Woodward Inc., Colorado, USA
  • Aditya Shedge – Semiconductor Packaging Engineer, Texas Instruments, Dallas, TX
  • Yintao Ma – Master’s student, University of Waterloo
  • Carly Newman
  • Joel Wright
  • Richard Li
  • Zhong (Erick) Zhou
  • Yamini Yedetore
  • Keerthi Kamath
  • Ryan Yan