Dr Hanna Cho

Hanna Cho is an Associate Professor in the Department of Mechanical and Aerospace Engineering at the Ohio State University (USA). Her research group, Micro/Nano Multiphysical Dynamics Laboratory (MNMDL), investigates various multiphysical dynamics problems at the micro/nanoscale.

The three main areas of focus include: (i) exploiting nonlinear characteristics in micro/nano-electro-mechanical systems (MEMS/NEMS), (ii) advancing the state-of-art AFM techniques to achieve better material characterisations beyond topography, and (iii) applying the capabilities of advanced AFM and microsystems for various material science research.

She invented a new AFM probe design, so-called inner paddled cantilever, which can eliminate crosstalk in piezoresponse force microscopy (PFM). Some of her most recent research combines resonance-enhanced PFM and dual-frequency resonance-tracking method to identify the anisotropic and heterogenous nature of the piezoelectric properties in type I collagen fibrils.

Dr Hanna Cho

Recent AFM-related papers:

• Kwon, J. and Cho, H. (2020). ‘Piezoelectric Heterogeneity in Collagen Type I Fibrils Quantitatively Characterized by Piezoresponse Force Microscopy’. ACS Biomaterials Science & Engineering, 6(12), pp. 6680-6689.

• Lee, M., Reddi, R., Choi, J., Liu, J., Huang, X., Cho, H. and Kim, J-H. (2020). ‘In-Operando AFM Characterization of Mechanical Property Evolution of Si Anode Binders in Liquid Electrolyte’. ACS Applied Energy Materials, 3(2), pp. 1899-1907.

• Dharmasena, S. M., Yang, Z., Kim, S., Bergman, L. A., Vakakis, A. F. and Cho, H. (2018). ‘Ultimate Decoupling between Surface Topography and Material Functionality in Atomic Force Microscopy Using an Inner-Paddled Cantilever’. ACS Nano, 26(12), pp. 5559-5569.

Biography: Hanna received BS (2002) and MS (2004) degrees in Mechanical Engineering from Yonsei University (South Korea) before earning a PhD in Mechanical Science and Engineering at the University of Illinois at Urbana-Champaign (UIUC) (USA) in 2012.

She then worked at UIUC as a postdoctoral researcher with Prof. William P. King before joining Texas Tech University (TTU) (USA) as an Assistant Professor of Mechanical Engineering in 2013. Since 2015, she worked as an Assistant Professor in the Department of Mechanical and Aerospace Engineering at the Ohio State University College of Engineering (USA), becoming an Associate Professor in 2020.

Hanna is also the recipient of the DARPA (Defense Advanced Research Project Agency) Young Faculty Award and Director’s Fellowship, OSU Lumley Research Award, and the American Society of Mechanical Engineers (ASME) C.D. Mote Jr. Early Career Award.

Websites: Micro/nano Multiphysyical Dynamics Lab | Mechanical and Aerospace Engineering (osu.edu), https://www.linkedin.com/in/hanna-cho-ph-d-9b985350/

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