Continuum and atomistic scale computational mechanics for structures with small length scales. With on-demand call to molecular dynamics simulations and scale up to continuum level constitute models, where predictions can be made for laboratory accessible time and length scales.
Material systems including: crystal plasticity in singly/poly crystalline metals, interfacial/grain-boundary mechanics in nanostructured materials, amorphous solids, nanowires, soft materials.
 Chuangchuang Duan, Yujie Wei*. Scaling of internal dissipation of polycrystalline solids on grain-size and frequency. Acta Materialia, 2020. 201: p. 350-363. Yanglizhi Li, Luzhao Sun, Zhenghua Chang, ..., Yujie Wei*, Hailin Peng*, Li Lin*, Zhongfan Liu*. Large Single‐Crystal Cu Foils with High‐Index Facets by Strain‐Engineered Anomalous Grain Growth. Advanced Materials, 2020, 32, 2002034.
 Shenyou Peng, Yujie Wei*, Huajian Gao*. Nanoscale precipitates as sustainable dislocation sources for enhanced ductility and high strength. PNAS, 2020, 117(10).
 Zhenghua Chang, Ronggui Yang*, Yujie Wei*. The linear-dependence of adhesion strength and adhesion range on temperature in soft membranes. Journal of the Mechanics and Physics of Solids, 2019, 132: 103697.
 Shenyou Peng, Yujie Wei*, Zhaohui jin,Wei Yang. Supersonic Screw Dislocations Gliding at the Shear Wave Speed. Physical Review Letters, 2019, 122(4).
 Zeng XG,Yujie Wei*. The effective fracture strength and fracture toughness of solids with energy dissipation confined to localized strips. International Journal of Plasticity,2019,120:47-63.
 Chengqi Sun, Qingyuan Song, Lingling Zhou, Jialong Liu, Yao Wang, Xiaolei Wu, Yujie Wei*. The formation of discontinuous gradient regimes during crack initiation in high strength steels under very high cycle fatigue. International Journal of Fatigue, 2019, 124: 483-492.
 Chao Wang, Jici Wen, Fei Luo, Baogang Quan, Hong Li, Yujie Wei*, Changzhi Gu, Junjie Li. Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation. Journal of Materials Chemistry A, 2019.
 Yujie Wei*, Ronggui Yang*. Nanomechanics of graphene. National Science Review, Volume 6, Issue 2, March 2019, Pages 324–348.
 Xiaokun Gu, Yujie Wei*, Xiaobo Yin, Baowen Li*, Ronggui Yang*. Colloquium: Phononic thermal properties of two-dimensional materials. Reviews of Modern Physics, 2018, 90(4): 041002.