Strain-Engineered Nanoscale Spin Polarization Reversal in Diamond Nitrogen-Vacancy CentersRemoveZhixian Liu, Jiahao Sun, Ganyu Xu, Bo Yang, Yuhang Guo, Yu Wang, Cunliang Xin, Hongfang Zuo, Mengqi Wang, and Ya WangPhys. Rev. Lett. 136, 143001 (2026)