1. Department of Materials Science and Engineering, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
2. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
3. Department of Radiology, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
4. Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Carson International Cancer Center, Laboratory of Evolutionary Theranostics, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China