• 02/2012-07/2012 Postdoctoral researcher, Department of Materials and Environmental Chemistry, Stockholm University

• 08/2012-08/2013 Research Scientist, Department of Materials and Environmental Chemistry, Stockholm University

• 09/2013-06/2019 Assistant Professor, School of Materials Science and Engineering, Tsinghua University

• 06/2019-present Associate Professor, School of Materials Science and Engineering, Tsinghua University

• Fundamental of Materiomics, Graduate course (Fall semester, since 2014)

• Academic Standards and Ethics for Graduate Students of MSE, Graduate course (Fall semester, since 2014)

• Ferroelectric and Multiferroic Materials

• Strongly Correlated Functional Oxide Films

• 2023 Excellent Youth Award of the Dielectric Physics Committee, Chinese Physical Society (Class A)

• 2021 First Prize in Natural Science of the Higher Education Outstanding Scientific Research Achievements Award (Science and Technology), Ministry of Education of China (Ranked third)

• 2020 Tsinghua University Outstanding Teaching Award for Junior Faculty

• 2019 National Science Fund for Excellent Young Scholar, Natural Science Foundation of China

• 2015 Young Elite Scientists Sponsorship Program, China Association for Science and Technology

• 2013 Tsinghua University 221 Program, Tsinghua University (Top supporting program for outstanding young scientists in Tsinghua University)

• 2013 National Award for Top 100 Ph.D Thesis of 2011, Ministry of Education of China (Top national honor for Ph.D thesis in China)

Selected Publications:

1． H. J. Han, J. Ma, J. Wang, E. X. Xu, Z. Q. Xu, H. B. Huang, Y. Shen, C.-W. Nan, J. Ma^*, Polar topological materials and devices: Prospects and challenges, Progress in Materials Science, 2025, 153, 101489.

2． Z. Q. Xu, Y. Q. Liu, L. Zhou, E. X. Xu, W. Li, H. J. Han, J. K. Gu, Q. Li, Y. H. Lin, C.-W. Nan, Y. Shen, J. Ma^*, Interface‐Engineered Polar Topological Domains in Ferroelectric Nematic Liquid Crystals, Advanced Materials, 2025, 2501395.

3． H. J. Han^#, W. Li^#, Q. H. Zhang, S. Y. Tang, Y. Wang, Z. Q. Xu, Y. Q. Liu, H. T. Chen, J. K. Gu, J. Wang, D. Yi, L. Gu, H. B. Huang, C.-W. Nan, Q. Li^*, J. Ma^*, Electric Field-Manipulated Optical Chirality in Ferroelectric Vortex Domains, Advanced Materials, 2024, 36(46), 2408400.

4． J. S. Guo^#, L. Tao^#, X. Xu, L. X. Hou, C.-W. Nan, S. X. Du^*, C. L. Chen^*, J. Ma^*, Rhombohedral R3 phase of Mn-doped Hf_0.5Zr_0.5O₂ epitaxial films with robust ferroelectricity, Advanced Materials, 2024, 36(47), 2406038.

5． X. M. Jia, Y. H. Liang, L. Wu, Y. J. Zhang, Y. B. Chen, C.-W. Nan, D. Yi, J. Ma^*, C. L. Chen^*, Tunable Anomalous Hall Effect in Broken-Symmetry Integrated Perovskite/Brownmillerite Superlattices, Advanced Functional Materials, 2025, 35(1), 2411613.

6． Y. Wang, C. Q. Guo, M. F. Chen, Y. H. Liang, H. J. Han, H. T. Chen, Y. H. Lin, D. Yi, H. B. Huang, C.-W. Nan^*, J. Ma^*, Mechanically Driven Reversible Polarization Switching in Imprinted BiFeO₃ Thin Films, Advanced Functional Materials, 2023, 33(31), 2213787.

7． Y. Q. Liu, Y. H. Wu, H. J. Han, Y. Wang, R. X. Peng, K. Liu, D. Yi, C.-W. Nan, J. Ma^*, CuInP₂S₆-based Electronic/Optoelectronic Synapse for Artificial Visual System Application, Advanced Functional Materials, 2024, 34(1), 2306945.

8． H. J. Han, Q. H. Zhang, W. Li, Y. Q. Liu, J. S. Guo, Y. Wang, Q. Li, L. Gu, C.-W. Nan, J. Ma^*, Interfacial Oxygen Octahedral Coupling-Driven Robust Ferroelectricity in Epitaxial Na_0.5Bi_0.5TiO₃ Thin Films, Research, 2023, 6, 0191.

9． J. Wang^#, D. Liang^#, J. Ma^#, Y. Fan, J. Ma, H. M. Jafri, H. Yang, Q. Zhang, Y. Wang, C. Guo, S. Dong, D. Liu, X. Wang, J. Hong, N. Zhang, L. Gu, D. Yi, J. Zhang, Y. Lin, L.-Q. Chen, H. Huang*, C.-W. Nan*, Polar Solomon rings in ferroelectric nanocrystals, Nature communications 2023, 14, 3941.

10． J. L. Wu^#, R. Guzman^#, Y. J. Zhang, H. T. Chen, Y. B. Chen, S. Y. Bao, D. Yi, C.-W. Nan, W. Zhou^*, C. L. Chen^*, J. Ma^*, Lateral magnetic anisotropy modulated by antiphase domain boundaries in PrBaCo₂O_5+δ thin films, Acta Materialia, 2023, 247, 118760.

11． Y. Q. Liu, Y. H. Wu, B. L. Wang, H. T. Chen, D. Yi, K. Liu, C.-W. Nan, J. Ma^*, Versatile Memristor Implemented in Van Der Waals CuInP₂S₆, Nano Research, 2023, 16(7): 10191-10197.

12． Y. Wang, M. F. Chen, J. Ma, Q. H. Zhang, Y. Q. Liu, Y. H. Liang, L. X. Hou, Y. H. Lin, C.-W. Nan, J. Ma^*, A self-assembly growth strategy for a highly ordered ferroelectric nanoisland array, Nanoscale, 2022, 14(38), 14046-14051.

13． J. Wang^#*, R. X. Zhu^#, J. Ma, H. Y. Yang, Y. Y. Fan, M. F. Chen, Y. W. Sun, P. Gao, H. B. Huang, J. X. Zhang, J Ma^*, C.-W. Nan, Photoenhanced electroresistance at dislocation-mediated phase boundary, ACS Applied Materials & Interfaces, 2022, 14(16) 18662–18670.

14． J. Wang^#, J. Ma^#, H. B. Huang^*, J. Ma, H. M. Jafri, Y. Y. Fan, H. Y. Yang, Y. Wang, M. F. Chen, D. Liu, J. X. Zhang, Y. H. Lin, L.-Q. Chen, D. Yi, C.-W. Nan^*, Ferroelectric domain-wall logic units, Nature Communications, 2022, 13, 3255.

15． J. L. Wu^#, R. Guzman^#, S. Y. Bao, Y. J. Zhang, Y. B. Chen, S. C. Shen, P. Yu, C.-W. Nan, W. Zhou^*, C. L. Chen^*, J. Ma^*, Mosaic growth induced magnetic anisotropy in double perovskite PrBaCo₂O_5+δ thin films, Acta Materialia, 2022, 234, 118040.

16． H. T. Chen, D. Yi, B. Xu^*, J. Ma^*, C.-W. Nan, Spontaneous symmetry breaking of dislocation core in SrTiO₃, Materials Today Physics, 2021, 20, 100453.

17． M. F. Chen, J. Ma, R. C. Peng, Q. H. Zhang, J. Wang, Y. H. Liang, J. L. Wu, L. Q. Chen, J. Ma^*, C.-W. Nan^*, Robust polarization switching in self-assembled BiFeO₃ nanoislands with quad-domain structures, Acta Materialia, 2019, 175, 324-330.

18． J. Wang, J. Ma, Y. B. Yang, M. F. Chen, J. X. Zhang, J. Ma^*, C.-W. Nan^*, Ferroelectric photodetector with high current on-off ratio (~1×10⁴%) in self-assembled topological nanoislands, ACS Applied Electronic Materials, 2019, 1(6), 862−868.

19． J. Ma, J. Ma, Q. H. Zhang, R. C. Peng, J. Wang, C. Liu, M. Wang, N. Li, M. F. Cheng, X. X. Cheng, P. Gao, L. Gu, L. Q. Chen, P. Yu, J. X. Zhang^*, C. W. Nan^*, Controllable conductive readout in self-assembled, topologically confined ferroelectric domain walls, Nature Nanotechnology, 2018, 13 (10): 947-952.