主要从事磁性纳米材料相关的微磁学模拟研究。用微磁学模拟预测磁性纳米材料中磁性拓扑态，如斯格明子，涡旋等的形成条件、机理与动力学行为，为实验提供理论指导；与实验结合，研究材料中各参数变化所引起的磁性能变化的物理机制，解释实验现象并指导优化实验设计。

1）Y. Y. Dai, H. Wang, P. Tao, W. J. Ren, T. Yang, Z. D. Zhang, “Skyrmion ground state and gyration of skyrmions in magnetic nanodisks without the Dzyaloshinsky-Moriya interaction”, Phys. Rev. B 88, 054403 (2013).
2）Y. Y. Dai, H. Wang, T. Yang, W. J. Ren and Z. D. Zhang, “Flow-like dynamics of coupled Skyrmions with dual resonant modes under a single-frequency microwave magnetic field”, Sci. Rep. 4, 6153 (2014).
3）Y. Y. Dai, H. Wang, T. Yang, and Z. D. Zhang, “Resonant excitation of coupled skyrmions by spin-transfer torque”, Int. J. Mod. Phys. B, 30, 1550254 (2016).
4）Y. Y. Dai, H. Wang, T. Yang, and Z. D. Zhang, “Controlled Magnetization Reversal and Magnetic Spectra of Thin Permalloy Films with Sierpinski Fractal Structure”, J. Magn. and Magn. Mater. 483, 70 (2019).
5）Han Wang*, Yingying Dai*, Zhongran Liu, Qidong Xie, Chao Liu, Weinan Lin, Liang Liu, Ping Yang, John Wang, Thirumalai Venky Venkatesan, Gan Moog Chow, He Tian, Zhidong Zhang, and Jingsheng Chen, Adv. Mater. 32, 1904415 (2020). (共同一作)
6）Y. Y. Dai, Y. Ren, Y. Xu, Q. F. Liu, and J. B. Wang, “A Novel Fabrication Method of Magnetic Co/Ni0.4Zn0.6Fe2O4 Coaxial Nanocables”, J. Nanosci. Nanotechnol. 12, 2472 (2012).
7）H. Wang, Y. Y. Dai, T. Yang, W. J. Ren, Z. D. Zhang, “Dual-frequency microwave-driven resonant excitations of skyrmions in nanoscale magnets”, RSC adv. 4, 62179 (2014);
8）Z. M. Dai, Y. Y. Dai, W. Liu, T. T. Wang, X. T. Zhao, X. G. Zhao and Z. D. Zhang, "Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks", Appl. Phys. Lett. 111, 022404 (2017).
9）H. Wang, Y. Y. Dai, W. J. Gong, D. Y. Geng, S. Ma, D. Li, W. Liu, and Z. D. Zhang, “Dual dielectric relaxation and multi-resonance enhanced microwave wave absorption of Co60Ni40/C nanocapusles”, Appl. Phys. Lett. 102, 223113 (2013)
10）H. Wang, Y. Y. Dai, D. Y. Geng, S. Ma, D. Li, J. An, J. He, W. Liu, and Z. D. Zhang, "CoxNi100-x nanoparticles encapsulated by curved graphite layers: controlled in-situ metal-catalytic preparation and broadband microwave absorption", Nanoscale 7, 17312 (2015).
11）Y. Ren, Y. Y. Dai, B. Zhang, Q. F. Liu, D. S. Xue, and J. B. Wang, “Tunable Magnetic Properties of Heterogeneous Nanobrush: From Nanowire to Nanofilm”, Nanoscale Res. Lett. 5, 853 (2010).
12）H. Wang, H. H. Guo, Y. Y. Dai, D. Y. Geng, Z. Han, D. Li, T. Yang, S. Ma, W. Liu, and Z. D. Zhang, “Optimal electromagnetic-wave absorption by enhanced dipole polarization in Ni/C nanocapsules”, Appl. Phys. Lett. 101, 083116 (2012).
13）Y. Ren, J. B. Wang, Q. F. Liu, Y. Y. Dai, B. Zhang, L. G. Yan, “Tailoring coercivity and magnetic anisotropy of Co nanowire arrays by microstructure”, J. Mater. Sci. 46, 7545 (2011).
14）Xiaofei Xiao, Licong Peng, Xinguo Zhao, Ying Zhang, Yingying Dai, Jie Guo, Min Tong, Ji Li, Bing Li, Wei Liu, Jianwang Cai, Baogen Shen, and Zhidong Zhang, Appl. Phys. Lett. 114, 142404 (2019).
专著：
1）Y. Y. Dai, H. Wang and Z. D. Zhang, "Chapter 1 Topology of Magnetic Domains", in "SKYRMIONS Topological Structures, Properties, and Applications", CRC Press: 1-32 (2016).
2）Y. Y. Dai, H. Wang and Z. D. Zhang, "Chapter 7 Novel topological resonant excitations of coupled skyrmions", in "SKYRMIONS Topological Structures, Properties, and Applications", CRC Press: 301-334 (2016).