Matt Pharr

Assistant Professor - Mechanical Engineering

Phone: (979) 458-3114


Department Page

Google Scholar Profile

Research Interests

Dr. Pharr's current research focuses on materials for energy storage and conversion,
deformation and fracture of soft materials, mechanics of flexible/wearable electronic
devices, mechanics of irradiated materials, coupled electro-chemo-mechanics, and mass
transport in materials.



May 2014 Ph.D. in Engineering Sciences, Harvard University

Dissertation: Diffusion, Deformation, and Damage in Lithium-ion Batteries and Microelectronics

May 2010 S.M. in Engineering Sciences, Harvard University
May 2008 B.S. in Mechanical Engineering & B.A. in Materials Science, Rice University



Aug. 2016 – present Texas A&M University

Department of Mechanical Engineering
Department of Materials Science & Engineering (courtesy)
Assistant Professor

Aug. 2014 – July 2016 University of Illinois at Urbana-Champaign

Department of Materials Science and Engineering
Postdoctoral Research Associate

Mar. 2007 – Sept. 2007 Saxonian Institute of Surface Mechanics in Eilenburg, Germany


May 2006 – Aug. 2006 University of Tennessee

Scintillation Materials Research Center
Research Intern

June 2005 – Aug. 2005 Oak Ridge National Laboratory

Materials Science and Technology Division
Intern in the Department of Energy SULI Program



†denotes equal contribution to the manuscript #denotes corresponding author
Published Journal Papers

J34. David A. Santos, Yang Bai, Justin L. Andrews, Peter Stein, Yuting Luo, Yuwei Zhang, Matt Pharr, Bai-Xiang Xu#, and Sarbajit Banerjee#. “Bending Good Beats Breaking Bad: Phase Separation Patterns in Individual Cathode Particles upon Lithiation and Delithiation.” Accepted for publication in Materials Horizons (2020).

J33. Veronica Augustyn#, Ruocun Wang, Nina Balke, Matt Pharr, and Craig Arnold. “Deformation during Electrosorption and Insertion-type Charge Storage: Origins, Characterization, and Design of Materials for High Power.” ACS Energy Letters 5, 3548-3559 (2020).

J32. Justin Andrews, Peter Stein, David Santos, Cody Chalker, Luis R De Jesus, Rachel Davidson, Michelle Gross, Matt Pharr, James Batteas, Bai-Xiang Xu#, and Sarbajit Banerjee#. “Curvature-Induced Modification of Mechano Electrochemical Coupling and Nucleation Kinetics in a Cathode Material.” Matter 3, 1-20 (2020).

J31. Cole D. Fincher†, Haley Turman†, Aaron French, Matthew Chancey, Jonathan Gigax, Eda Aydogan, Dexin Zhao, Digvijay Yadav, Kelvin Xie, Yongqiang Wang, Mike Borden, Lin Shao, Stuart A. Maloy, and Matt Pharr#. “Damage Relief in Ion-Irradiated Inconel 718 via Annealing.” Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 479, 157-162 (2020).

J30. Seunghyun Lee†, Cole D. Fincher†, Russell Rowe, Arber Shasivari, Edwin Torres, Michael Ecker-Randolph, and Matt Pharr#. “Making something out of nothing: enhanced flaw tolerance and rupture resistance in elastomer-void “negative” composites.” Extreme Mechanics Letters, 100845 (2020).

J29. Yusheng Lei, Yimu Chen, Ruiqi Zhang, Yuheng Li, Qizhang Yan, Seunghyun Lee, Yugang Yu, Hsinhan Tsai, Woojin Choi, Kaiping Wang, Yanqi Luo, Yue Gu, Xinran Zheng, Chunfeng Wang, Chonghe Wang, Hongjie Hu, Yang Li, Baiyan Qi, Muyang Lin, Zhuorui Zhang, Shadi Dayeh, Matt Pharr, David Fenning, Yu-Hwa Lo, Jian Luo, Kesong Yang, Jinkyoung Yoo, Wanyi Nie, and Sheng Xu#. “A fabrication process for flexible single-crystal perovskite devices.” Nature 583 (7818), 790-795 (2020).

J28. Qing Zhou, Frank Gardea, Zhen Sang, Seunghyun Lee, Matt Pharr, and Svetlana Sukhishvili. “A Tailorable Family of Elastomeric-to-Rigid, 3D Printable, Interbonding Polymer Networks.” Advanced Functional Materials, 2002374 (2020). Highlighted by EurekAlert!: (

J27. Seunghyun Lee, Omid Zargar, Carl Reiser, Qing Li, Anastasia Muliana, Scott A. Finlayson, Francisco E. Gomez#, and Matt Pharr#. “Time-dependent Mechanical Behavior of Sweet Sorghum Stems.” Journal of the Mechanical Behavior of Biomedical Materials 106, 103731 (2020).

J26. Cole D. Fincher, Yuwei Zhang, George M. Pharr, and Matt Pharr#. “Elastic and Plastic Characteristics of Sodium Metal.” ACS Applied Energy Materials 3, 1759-1767 (2020).

J25. Rachel Davidson, Ankit Verma, David Santos, Feng Hao, Cole Fincher, Dexin Zhao, Vahid Attari, Parker Schofield, Jonathan Van Buskirk, Antonio Fraticelli-Cartagena, Theodore E. G. Alivio, Raymundo Arroyave, Kelvin Xie, Matt Pharr, Partha P. Mukherjee#, and Sarbajit Banerjee#. “Mapping Mechanisms and Growth Regimes of Magnesium Electrodeposition at High Current Densities.” Materials Horizons 7, 843- 854 (2020).

J24. Cole D. Fincher, Daniela Ojeda, Yuwei Zhang, George Pharr, and Matt Pharr#. “Mechanical Properties of Metallic Lithium: from Nano to Bulk Scales.” Acta Materialia
186, 215-222 (2020).

J23. KunHyuck Lee, Xiaoyue Ni, Jong Yoon Lee, Hany Arafa, David Pe, Shuai Xu, Raudel Avila, Masahiro Irie, Joo Hee Lee, Ryder L. Easterlin, Dong Hyun Kim, Ha Uk Chung, Omolara O. Olabisi, Selam Getaneh, Esther Chung, Marc Hill, Jeremy Bell, HoKyung Jang, Claire Liu, Jun Bin Park, Jungwoo Kim, Sung Bong Kim, Sunita Mehta, Matt Pharr, Andreas Tzavelis, Jonathan T. Reeder, Ivy Huang, Yujun Deng, Zhaoqian Xie#, Charles R. Davies#, Yonggang Huang#, John A. Rogers#. “Mechano-acoustic sensing of physiological processes and body motions using soft, wireless devices interfaced to the skin at the suprasternal notch.” Nature Biomedical Engineering 4, 148-158 (2020).

J22. Philipp Mayer†, Nandhini Sivakumar†, Michael Pritz, Matjia Varga, Andreas Mehmann, Seunghyun Lee, Alfredo Salvatore, Michele Magno, Matt Pharr, Helge C. Johannssen, Gerhard Troester, Hanns Ulrich Zeilhofer, and Giovanni Antonio Salvatore#. “Flexible and Lightweight Devices for Wireless multi-Color Optogenetic Experiments Controllable via Commercial Cell Phones.” Frontiers in Neuroscience 13 (819), 1-14 (2019).

J21. Yuwei Zhang, Yuting Luo, Cole Fincher, Sarbajit Banerjee, and Matt Pharr#. “Chemo- Mechanical Degradation in V2O5 Thin Film Cathodes of Li-ion Batteries during Electrochemical Cycling.” Journal of Materials Chemistry A Emerging Investigators 7, 23922-23930 (2019).

J20. Yuwei Zhang, Coleman Fincher, Scott McProuty, and Matt Pharr#. “In-operando imaging of polysulfide catholytes for Li-S batteries and implications for kinetics and mechanical stability.” Journal of Power Sources 434, 226727 (2019).

J19. Rachel D. Davidson†, Yenny Cubides†, Cole Fincher, Peter Stein, Chelsea McLain, Bai-Xiang Xu, Matt Pharr, Homero Castaneda#, and Sarbajit Banerjee#. “Tortuosity but not Percolation: Design of Exfoliated Graphene Nanocomposite Coatings for Extended Corrosion Protection of Aluminum Alloys.” ACS Applied Nano Materials 2, 3100-3116 (2019).

J18. Seunghyun Lee and Matt Pharr#. “ ‘Sideways’ and stable crack propagation in a silicone elastomer.” Proceedings of the National Academy of Sciences of the United States of America 116 (19), 9251-9256 (2019). Highlighted by EurekAlert!: (, Scienmag: (, Science Codex: (, (, Health Medicine Network: ( stretchable-electronics-materials/), AZO Materials:(

J17. Rachel Davidson, Ankit Verma, David Santos, Feng Hao, Coleman Fincher, Sisi Xiang, Jonathan van Buskirk, Kelvin Xie, Matt Pharr, Partha Mukherjee#, and Sarbajit Banerjee#. “Formation of Magnesium Dendrites during Electrodeposition.” ACS Energy Letters 4, 375-376 (2019).

J16. Mohammad Humood, Joseph Lefebvre, Yan Shi, Mengdi Han, Coleman D. Fincher, Matt Pharr, John A. Rogers, and Andreas A. Polycarpou#. “Fabrication and Mechanical Cycling of Polymer Microscale Architectures for 3D MEMS Sensors.” Advanced Engineering Materials 1801254 (2019). Highlighted by Advanced Science News: (

J15. Yuwei Zhang, Yuting Luo, Coleman Fincher, Scott McProuty, Garrett Swenson, Sarbajit Banerjee, and Matt Pharr#. “In-Situ Measurements of Stress Evolution in Composite Sulfur Cathodes.” Energy Storage Materials 16, 491-497 (2019).

J14. Ruocun Wang, James B. Mitchell, Qiang Gao, Wan-Yu Tsai, Shelby Boyd, Matt Pharr, Nina Balke, and Veronica Augustyn#. “Operando Atomic Force Microscopy Reveals Mechanics of Structural Water Driven Battery-to-Pseudocapacitor Transition.” ACS Nano 12 (6), 6032-6039 (2018). Highlighted by Science Daily: (, Phys Org: (, Energy Daily: (, EurekAlert! (, EDIWeekly: (, MRS Bulletin: (

J13. Xinge Yu†, Heling Wang†, Xin Ning†, Rujie Sun, Hassan Albadawi, Marcela Salomao, Alvin C. Silva, Yang Yu, Limei Tian, Ahyeon Koh, Chan Mi Lee, Aditya Chempakasseril, Peilin Tian, Matt Pharr, Jianghong Yuan, Yonggang Huang#, Rahmi Oklu#, and John A. Rogers#. “Needle-shaped ultrathin piezoelectric microsystem for guided tissue targeting via mechanical sensing.” Nature Biomedical Engineering, 2, 165-172 (2018). Selected for front cover of March 2018 issue of Nature Biomedical Engineering.

J12. Hongjie Hu†, Xuan Zhu†, Chonghe Wang†, Lin Zhang, Xiaoshi Li, Seunghyun Lee, Zhenlong Huang, Ruimin Chen, Zeyu Chen, Chunfeng Wang, Yue Gu, Yimu Chen, Yusheng Lei, Tianjiao Zhang, NamHeon Kim, Yuxuan Guo, Yue Teng, Wenbo Zhou, Yang Li, Akihiro Nomoto, Simone Sternini, Qifa Zhou, Matt Pharr, Francesco Lanza di Scalea, and Sheng Xu#. “Stretchable ultrasonic transducer arrays for three-dimensional imaging on complex surfaces.” Science Advances, 4 (3), eaar3979(2018). Highlighted by Science Daily: (, Medgadget: (, Bioengineering Today:(, Aerospace Manufacturing and Design (

J11. Mohammad Humood, Yan Shi, Mengdi Han, Joseph Lefebvre, Zheng Yan, Matt Pharr, Yihui Zhang, Yonggang Huang, John A. Rogers, and Andreas A. Polycarpou#. “Fabrication and Deformation of 3D Multilayered Kirigami Microstructures.” Small, 1703852 (2018). Selected for front cover of March 15, 2018 issue of Small.

J10. Yuhao Liu†#, Matt Pharr†#, and Giovanni Salvatore†#. “Lab-on-Skin: A Review of Flexible and Stretchable Electronics for Wearable Health Monitoring.” ACS Nano 11(10), 9614-9635 (2017). Highlighted by Nanowerk:(, Daily Beast: (, Dark Daily: (

J9. Taisong Pan†, Matt Pharr†, Yinji Ma†, Rui Ning, Zheng Yan, Renxiao Xu, Xue Feng, Yonggang Huang, and John A. Rogers#. “Experimental and Theoretical Studies of Serpentine Interconnects on Ultrathin Elastomers for Stretchable Electronics.” Advanced Functional Materials, 27 (37), 1702589 (2017).

J8. Joselle M. McCracken†, Sheng Xu†, Adina Badea, Kyung-In Jang, Zheng Yan, David J. Wetzel, Kewang Nan, Qing Lin, Mengdi Han, Mikayla A. Anderson, Jung Woo Lee, Zijun Wei, Matt Pharr, Renhan Wang, Jessica Su, Stanislav S. Rubakhin, Jonathan V. Sweedler, John A. Rogers#, and Ralph G. Nuzzo#. “Deterministic Integration of Biological and Soft Materials onto 3D Microscale Cellular Frameworks.” Advanced Biosystems, 1 (9), 1700068 (2017). Selected for front cover of September 2017 issue of Advanced Biosystems.

J7. Garrett Hardin†, Yuwei Zhang†, Coleman Fincher, and Matt Pharr#. “Interfacial Fracture of Nanowire Electrodes of Lithium-Ion Batteries.” Journal of the Minerals, Metals & Materials Society, 69 (9), 1519-1523 (2017).

J6. Xiufeng Wang, Yinji Ma#, Yeguang Xue, Haiwen Luan, Matt Pharr, Xue Feng, John A. Rogers, and Yonggang Huang#. “Collapse of liquid-overfilled strain-isolation substrates in wearable electronics.” International Journal of Solids and Structures, 117, 137-142 (2017).

J5. Yinji Ma†, Matt Pharr†, Liang Wang, Jeonghyun Kim, Yuhao Liu, Yeguang Xue, Rui Ning, Xiufeng Wang, Ha Uk Chung, Xue Feng, John A. Rogers#, and Yonggang Huang#. “Soft Elastomers with Ionic Liquid-Filled Cavities as Strain Isolatin Substrates for Wearable Electronics.” Small, 13 (9), 1602954 (2017).

J4. Jianghong Yuan#, Matt Pharr, X. Feng, John A. Rogers, and Yonggang Huang, “Design of stretchable electronics against impact.” Journal of Applied Mechanics 83 (10), 101009 (2016).

J3. Jianghong Yuan, Y. Shi, Matt Pharr, X. Feng, John A. Rogers, and Yonggang Huang#. “A mechanics model for sensors imperfectly bonded to the skin for determination of the Young’s moduli of epidermis and dermis.” Journal of Applied Mechanics, 83 (8), 084501 (2016).

J2. Matt Pharr†, Yong Seok Choi†, Dongwoo Lee, Kyu Hwan Oh, and Joost J. Vlassak#. “Measurements of stress and fracture in germanium electrodes of lithium-ion batteries during electrochemical lithiation and delithiation.” Journal of Power Sources, 304, 164-169 (2016).

J1. Yong Seok Choi, Matt Pharr, Kyu Hwan Oh, and Joost J. Vlassak#. “A simple technique for measuring the fracture energy of lithiated thin-film silicon electrodes at various lithium concentrations.” Journal of Power Sources, 294, 159-166 (2015).