低维氧化物功能材料显微结构表征及与性能的关系；钙钛矿结构氧化物功能界面的设计与PLD生长；关键材料的原子尺度表界面表征与性能关系。唐云龙研究员2017年赴美国加州大学伯克利分校/劳伦斯伯克利国家实验室从事铁性钙钛矿超晶格薄膜制备及相关的超高分辨电子显微学研究。一直从事功能钙钛矿薄膜的设计与脉冲激光沉积制备及其界面结构的(像差校正)透射电子显微学研究，并取得多项系统性重要研究进展；以第一作者、通讯作者身份在Science, Nature, Nature Communications, Science Advances, Acta Materialia, Advanced Materials，Nano Letters，Ultramicroscopy, Advanced Functional Materials等国际学术期刊上发表论文80余篇，多项成果被材料与物理类重要综述性期刊Reviews of Modern Physics、Progress in Materials Science、Reports on Progress in Physics重点引用，并被他评为“首次实验观测”。

1．S. Das#, Y. L. Tang#, et al., Observation of room-temperature polar skyrmions. Nature 568, 368–372 (2019). (contributed equally to this work with S. Das, Z. Hong# and M. A. P. Gonçalves; one of the three scientists who have designed the experiment)

2．Y. L. Tang, Y. L. Zhu, X. L. Ma, A. Y. Borisevich, A. N. Morozovska, E. A. Eliseev, W. Y. Wang, Y. J. Wang, Y. B. Xu, Z. D. Zhang, S. J. Pennycook. Observation of a periodic array of flux-closure quadrants in strained ferroelectric PbTiO3 films. Science 348, 547–551 (2015).

3．Y. L. Tang, Y. L. Zhu, Y. Liu, Y. J. Wang, and X. L. Ma*. Giant linear strain gradient with extremely low elastic energy in a perovskite nanostructure array. Nature Commun. 8:15994 (2017).

4．Y. L. Tang, Y. L. Zhu, X. L. Ma*, Z. J. Hong, Y. J. Wang, W. Y. Wang, Y. B. Xu, Y. Liu, B. Wu, L. Chen, C. W. Huang, L. Q. Chen, Z. H. Chen, H. J. Wu, and S. J. Pennycook. A Coherently Strained Monoclinic [111]PbTiO3 Film Exhibiting Zero Poisson’s Ratio State. Adv. Funct. Mater. 29, 1901687 (2019).

5．Y. L. Tang, Y. L. Zhu*, H. Meng, Y. Q. Zhang, and X. L. Ma. Misfit dislocations of anisotropic magnetoresistant Nd0.45Sr0.55MnO3 thin films grown on SrTiO3 (110) substrates. Acta mater. 60, 5975–5983 (2012).

6．Y. L. Tang, Y. L. Zhu, B. Wu, Y.-J. Wang, L. X. Yang, Y.-P. Feng, M.-J. Zou, W.-R. Geng, X.-L. Ma*. Periodic polarization waves in a strained, highly polar ultrathin SrTiO3. Nano Letters 21, 6274-6281 (2021).

7．R.-J. Jiang, Y. Cao, W.-R. Geng, M.-X. Zhu, Y.-L. Tang*, Y.-L. Zhu*, Y. J. Wang, F. H. Gong, S. Z. Liu, Y.-T. Chen, J. Q. Liu, N. Liu, J.-H. Wang, X.-D. Lv, S.-J. Chen, and X.-L. Ma. Atomic Insight into the Successive Antiferroelectric−Ferroelectric Phase Transition in Antiferroelectric Oxides. Nano Letters 23, 1522-1529 (2023).

8．W.-R. Geng, Y.-J. Wang, Y. L. Tang*, Y. L. Zhu*, B. Wu, L. X. Yang, Y.-P. Feng, M.-J. Zou, and X.-L. Ma. Atomic-Scale Tunable Flexoelectric Couplings in Oxide Multiferroics. Nano Letters 21, 9601–9608 (2021).

9．Y.T. Chen#, Y. L. Tang#, F. H. Gong, B. Wu, M. J. Han, M.-J. Zou, Y.-P. Feng, Y.-J. Wang, Y. L. Zhu*, X.-L. Ma*. Direct Observation of Large-Scale Screw Dislocation Grids in Oxide Heteroepitaxies. Nano Letters 22, 2085–2093 (2022). (contributed equally to this work with Y. T. Chen)

10．L. Cheng, Y. L. Tang*, Y. L. Zhu, X. L. Ma. Self-Recovery of Defective PbTiO3 Film with Enhanced Piezoelectricity by Homogenizing Annealing. Cryst. Growth Des. 20, 5967−5973 (2020).

11．J. Y. Ma, Y. J. Wang, Y. L. Zhu*, Y. L. Tang*, M. J. Han, M. J. Zou, Y. P. Feng, N. B. Zhang, W. R. Geng, B. Wu, W. T. Hu, X. W. Guo, H. Zhang, X. L. Ma, Real-time observation of phase coexistence and a1/a2 to flux-closure domain transformation in ferroelectric films. Acta Mater. 193, 311–317 (2020).

12．W. R. Geng, X. W. Guo, Y. L. Zhu*, Y. J. Wang, Y. L. Tang*, M. J. Han, Y. P. Feng, M. J. Zou, B. Wu, J. Y. Ma, W. T. Hu, X. L. Ma*, Oxygen octahedral coupling mediated ferroelectric-antiferroelectric phase transition based on domain wall engineering. Acta Mater. 198, 145–152 (2020).

13．Y. L. Tang, Y. L. Zhu*, Y. Q. Zhang, Z. D. Zhang, X. L. Ma. Nano-structured Nd0.45Sr0.55MnO3 films grown on SrTiO3 (110). J. Mater. Res. 28, 1692–1698 (2013).

14．Y. L. Tang, Y. L. Zhu*, Y. J. Wang, W. Y. Wang, Y. B. Xu, W. J. Ren, Z. D. Zhang and X. L. Ma*. Atomic-scale mapping of dipole frustration at 90° charged domain walls in ferroelectric PbTiO3 films. Scientific reports 4:4115 (2014).

15．Y. L. Tang, Y. L. Zhu, X. L. Ma. On the benefit of aberration-corrected HAADF-STEM for strain determination and its application to tailoring ferroelectric domain patterns. Ultramicroscopy 160, 57–63 (2016). 

16．W. Y. Wang, Y. L. Tang, Y. L. Zhu, Y. B. Xu, Y. Liu, Y. J. Wang, S. Jagadeesh, and X. L. Ma. Atomic Level 1D Structural Modulations at the Negatively Charged Domain Walls in BiFeO3 Films. Advanced Materials Interfaces 2, 1500024 (2015) (contributed equally to this work with W. Y. Wang)

17．Y. L. Tang, Y. L. Zhu, Z. J. Hong, E. A. Eliseev, A. N. Morozovska, Y. J. Wang, Y. Liu, Y. B. Xu, B. Wu, L. Q. Chen, S. J. Pennycook, X. L. Ma*. 3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO3 films. J. Mater. Res. 32, 957–967 (2017).

18．Y. L. Tang, Y. L. Zhu, Y. J. Wang, X. L. Ma*. Multiple strains and polar states in PbZr0.52Ti0.48O3/PbTiO3 superlattices revealed by aberration-corrected HAADF-STEM imaging. Ultramicroscopy 193, 84–89 (2018).

19．Y. J. Wang#, Y. L. Tang#, Y. L. Zhu*, Y. P. Feng, X. L. Ma*. Converse flexoelectricity around ferroelectric domain walls. Acta mater. 191, 158–165 (2020). (contribute equally to this work with Y. J. Wang)

20．M. J. Zou#, Y. L. Tang#, Y. L. Zhu*, Y. J. Wang, L. X. Yang, X. L. Ma*. Deterministic contribution of low symmetry phases to piezoresponse in oxide ferroelectrics. Acta mater. 205, 116534 (2021). (contribute equally to this work with M. J. Zou)

21．F.-H. Gong#, Y.-L. Tang#, Y.-L. Zhu*, H. Zhang, Y.-J. Wang, Y.-T. Chen, Y.-P. Feng, M.-J. Zou, B. Wu, W.-R. Geng, Y. Cao, X.-L. Ma*. Atomic mapping of periodic dipole waves in ferroelectric oxide. Science Advances 7: eabg5503 (2021). (contribute equally to this work with F.-H. Gong)

22．S. Z. Liu, W. R. Geng, Y. L. Tang*, Y. L. Zhu*, Y. J. Wang, Y. Cao, R. J. Jiang, N. Liu, F. H. Gong, J. H. Wang, X. D. Lv, S. J. Chen, and X. L. Ma. Engineering antiferroelectric nucleation in ferroelectric films with enhanced piezoelectricity. Acta mater. 250, 118885 (2023).

23．S. J. Chen, Y. L. Tang*, F. H. Gong, J. H. Wang, X. D. Lv, R. J. Jiang, S. Z. Liu, W. R. Geng, Y. J. Wang, Y. L. Zhu, and X. L. Ma. Strain engineering of ferroelectric topologies prepared on conventional SrTiO3 substrates buffered with REScO3 layers. Acta mater. 243, 118530 (2023).

24．J.-Q. Liu#, Y.-L. Tang#, Y. Cao, Y.-L. Zhu*, Y. J. Wang, N. Liu, T.-T. Shi, M.-J. Zou, Y.-P. Feng, and X. L. Ma. Robust ferromagnetism in a cubic perovskite oxide with Curie temperature above 600 K. Cell Reports Physical Science 4, 101235 (2023).

25．Y. Cao#, Y.-L. Tang#, Y.-L. Zhu*, Y. J. Wang, N. Liu, M.-J. Zou, J.-Q. Liu, Y.-P. Feng, W. R. Geng, and X. L. Ma. Achieving High-Temperature Multiferroism by Atomic Architecture. ACS Appl. Materials & Interfaces 15, 3163−3171 (2023).

26．Y. Cao#, Y.-L. Tang#, Y.-L. Zhu*, Y. J. Wang, N. Liu, M.-J. Zou, Y.-P. Feng, W. R. Geng, C. J. Li, D. Li, Y. Li, B. Wu, J. Q. Liu, F. H. Gong, Z. D. Zhang, and X. L. Ma. Polar Magnetism Above 600 K with High Adaptability in Perovskite Oxides. ACS Appl. Materials & Interfaces 14, 48052−48060 (2022).

27．F. H. Gong, Y. T. Chen, Y.-L. Zhu*, Y.-L. Tang*, H. Zhang, Y. J. Wang, B. Wu, J. Q. Liu, T.-T. Shi, L. X. Yang, C. J. Li, Y.-P. Feng, and X. L. Ma. Thickness-Dependent Polar Domain Evolution in Strained, Ultrathin PbTiO3 Films. ACS Appl. Materials & Interfaces 14, 9724−9733 (2022).

28．F. H. Gong#, Y. L. Tang#, Y. J. Wang#, Y. T. Chen#, B. Wu, L. X. Yang, Y. L. Zhu*, and X. L. Ma*. Absence of critical thickness for polar skyrmions with breaking the Kittel’s law. Nature Commun. 14:3376 (2023).

29．W. R. Geng#, Y. L. Tang#, Y. L. Zhu*, Y.-J. Wang, B. Wu, L. X. Yang, Y. P. Feng, M.-J. Zou, T. T. Shi, Y. Cao, X. L. Ma*. Magneto–Electric–Optical Coupling in Multiferroic BiFeO3-Based Films. Adv. mater. 34, 2106396 (2022). (contributed equally to this work with W. R. Geng)

30．Y. L. Tang, Y. L. Zhu, M. J. Zou, Y. J. Wang, and X. L. Ma. Coexisting morphotropic phase boundary and giant strain gradient in BiFeO3 films. J. Appl. Phys. 129, 184101 (2021). 

31．Y. L. Tang, Y. L. Zhu, and X. L. Ma. Topological polar structures in ferroelectric oxide films. J. Appl. Phys. 129, 200904 (2021).