Education

  • Ph.D.  University of California, Berkeley, 2018
  • M.S.   Shanghai Jiao Tong University, China, 2013
  • B.S.    Shanghai Jiao Tong University, China, 2010

Research Areas and Descriptors

Acoustics and Dynamics, Mechanics of Materials, Bioengineering, and Micro & Nano Engineering: Acoustic metamaterials, wave propagation, cell manipulations, microfluidics, high-speed acoustic communication, ultrasonic imaging, high intensity focused ultrasound therapy, and phonons.

Background

Dr. Shi joined Georgia Tech in August 2018 as an assistant professor. Prior, he worked as a graduate student researcher at the Department of Mechanical Engineering of the University of California, Berkeley and Materials Science Division of Lawrence Berkeley National Laboratory focusing on the study of acoustic angular momentum and the design and realization of acoustic metamaterials and high-speed acoustic communication. His Ph.D. dissertation (2018) focuses on the development of acoustic metamaterials and the physics of the angular momentum of sound. Prior to his Ph.D. study at the Department of Mechanical Engineering of the University of California, Berkeley, Dr. Shi completed his M.S. degree in mechanical engineering at the University of Michigan-Shanghai Jiao Tong University Joint Institute in Shanghai, China. His M.S. thesis (2013) focuses on the dynamics and vibration of cyclically symmetric rotating mechanical systems.

Research

Dr. Shi’s research focuses on the design of acoustic metamaterials and their applications on high-speed communication, cell motion control in microfluidics, brain imaging, and non-invasive surgeries.

One of Dr. Shi’s research interests focuses on the study of physics of acoustic angular momentum and the interaction between acoustic angular momentum and linear momentum, as well as the resulted capability for the control of acoustic wave propagation, and the application of this controllability in the realization of high-speed acoustic communication.

Dr Shi’s another research interest focuses on designing on-chip metamaterials for the modulation of surface acoustic waves, which manipulate cell motions in microfluidics through radiation force and torque.

Another high-impact research Dr. Shi is interested in focuses on the development of acoustic metamaterials to overcome the strong scattering and attenuation of skull due to impedance mismatch and porosity for the realization of ultrasonic brain imaging and non-invasive surgeries with high intensity focused ultrasound.

In addition, Dr. Shi is interested in developing single phonon detectors, which can be applied to study the quantum properties of phonons.

The interdisciplinary research directions mentioned above involve both theoretical and experimental studies. Students who work on these research topics will develop a solid background in physics, mechanical engineering, and biomedical engineering with strong modeling and experimental skills. The students will also have the opportunities to interact and collaborate with other research groups in Georgia Tech and other prestigious universities and national laboratories, and participate in technical conferences, which allow them to develop a strong technical communication skill.

Chengzhi Shi, Marc Dubois, Yuan Wang, and Xiang Zhang, High-speed acoustic communication by multiplexing orbital angular momentum, Proceedings of National Academy of Sciences 114, 7250-7253 (2017).

Marc Dubois, Chengzhi Shi, Xuefeng Zhu, Yuan Wang, and Xiang Zhang, Observation of acoustic Dirac-like cone and double zero refractive index, Nature Communications 8, 14871 (2017).

Chengzhi Shi, Marc Dubois, Yun Chen, Lei Cheng, Hamidreza Ramezani, Yuan Wang, and Xiang Zhang, Accessing the exceptional points of parity-time symmetric acoustics, Nature Communications 7, 11110 (2016).

Chengzhi Shi and Robert G. Parker, Vibration mode structure and simplified modeling of cyclically symmetric or rotationally periodic systems, Proceedings of Royal Society A 471, 20140672 (2015).

Xuefeng Zhu, Hamidreza Ramezani, Chengzhi Shi, Jie Zhu, and Xiang Zhang, PT-symmetric acoustics, Physical Review X 4, 031042 (2014).