Chen, X., J. Dong, C. He, L. He, Z. Chen, S. Li, K. Zhang, X. Wang, and Z. L. Wang. “Epitaxial Lift-Off of Flexible GaN-Based HEMT Arrays With Performances Optimization by the Piezotronic Effect”. Nano-Micro Letters, vol. 13, Feb. 2021, p. 67, doi:10.1007/s40820-021-00589-4.