ABSTRACT: In this presentation, I will present our ongoing efforts to synthesize and manufacture novel materials and structures inspired by nature, guided by mechanics and numerical modeling and/or enabled by 3D printing. First, I will present a material system that can self-adapt to mechanical loadings and mitigate damages inspired by bone [1]. Second, I will present architected materials (or metamaterials) with extreme and adaptive energy absorption based on liquid crystal elastomers [2]. Third, I will present architected materials absorbing deep subwavelength sounds with tunable frequency ranges [3].

References

1. S. Orrego, Z. Chen, U. Krekora, D. Hou, S.-Y Jeon, M. Pittman, C. Montoya, Y. Chen, S. H. Kang, “Bioinspired materials with self-adaptable mechanical properties,” Advanced Materials, 32, 1906970 (2020).
2. S.-Y. Jeon, B. Shen, N. A. Traugutt, Z. Zhu, L. Fang, C. M. Yakacki, T. D. Nguyen, S. H. Kang, “Synergistic energy absorption mechanisms of a bistable architected liquid crystal elastomers,” Advanced Materials, 2200272 (2022).
3. O.-C. Kwon, S.-Y. Jeon, C. H. Lee, J. J. Park, K. Hur, J.-H. Kim, S. Chung, S. H. Kang, M.-W. Moon, “Deep subwavelength tunable and stretchable acoustic meta-absorber based on 3D-printed coupled Moiré grating,” under review.

BIOSKETCH: Sung Hoon Kang is an Assistant Professor in the Department of Mechanical Engineering at Johns Hopkins University. He earned a Ph.D. degree in Applied Physics at Harvard University and M.S. and B.S. degrees in Materials Science and Engineering from MIT and Seoul National University. Sung Hoon has been investigating solutions to address current challenges in engineering materials, structures and devices with applications including resiliency, sensing, energy, and healthcare. In particular, he investigates synthesis and manufacturing of materials and structures with novel properties based on principles of mechanics and physics and tools such as numerical modeling, 3D printing, 3D structural/material/mechanical characterizations, and in vitro/in vivo testing.