Department of Mechanical Engineering

Prof. FANG, Qiyi

Assistant Professor

  • Ph.D., Rice University, 2023
  • B.S., Peking University, 2017
Office
YUENG-B6704
Phone
(+852) 3442-8406
Email
qiyifang@cityu.edu.hk
Research Interests
  • Nanomechanical
  • Covalent-Organic-Frameworks (Cofs)
  • Polymer Physics
  • Thin Film Fabrication
  • Sensors And Thin Film Devices
  • Ion/Molecule Selective Membranes
  • Energy Harvesting And Storage
Links
Publications
  1. Dai. J.†; Fang. Q.†; Alvarez. G. A.; Schaeffer. A.; Page. K. A.; Kim. J.; Kielar. S. M.; Christiansen-Salameh. J.; Jeong. E.; Bhagwandin. D. D.; Kwon. J.; Tran. L. D.; Islam. M. S.; Roy. A. K.; Glavin. N. R.; Zhong. Y.; Lou. J.; Tian. Z. Directly measured high in-plane thermal conductivity of two-dimensional covalent organic frameworks. Nat. Commun. 2025,16, 6476.
  2. Fang, Q.†; Yi, K. †; Zhai, T†.; Luo, S.; Lin, C.-Y.; Ai, Q.; Zhu, Y.; Zhang, B.; Alvarez, G. A.; Shao, Y.; Zhou, H.; Gao, G.; Liu, Y.; Xu, R.; Zhang, X.; Wang, Y.; Tian, X.; Zhang, H.; Han, Y.; Zhu, H.; Zhao, Y.; Tian, Z.; Zhong, Y.; Liu, Z.; Lou, J. High-Performance 2D Electronic Devices Enabled by Strong and Tough Two-Dimensional Polymer with Ultra-Low Dielectric Constant. Nat. Commun. 2024, 15 (1), 10780. 
  3. Fang, Q. †; Pang, Z. †; Ai, Q.; Liu, Y.; Zhai, T.; Steinbach, D.; Gao, G.; Zhu, Y.; Li, T.; Lou, J. Superior Mechanical Properties of Multi-Layer Covalent-Organic-Frameworks Enabled by Rationally Tuning Molecular Interlayer Interactions. Proc. Natl. Acad. Sci. U.S.A. 2023, 120 (15), e2208676120. 
  4. Fang, Q. †; Sui, C. †; Wang, C.; Zhai, T.; Zhang, J.; Liang, J.; Guo, H.; Sandoz-Rosado, E.; Lou, J. Strong and Flaw-Insensitive Two-Dimensional Covalent Organic Frameworks. Matter 2021, 4 (3), 1017–1028. 
  5. Beagle, L. K.†; Fang. Q.†; Tran, L. D.; Baldwin, L. A.; Muratore, C.; Lou, J.; Glavin, N. R. Synthesis and Tailored Properties of Covalent Organic Framework Thin Films and Heterostructures. Mater. Today 2021, 51, 427–448. 
  6. Zhu, Y. †, Ai, Q. †, Fang, Q.†, Huang, X., Liu, Y., Shin, B., Yan, Y., Feng, Y., Chen, M.T., Zhang, X. and Han, Y., Li, Q. Ajayan. PM, Lou, J., Photoinduced synthesis of polymer-coated covalent organic framework microspheres for highly efficient lithium recovery. Nano Energy 130 (2024): 110111. 
  7. Ai, Q.†, Fang, Q.†, Liang, J., Xu, X., Zhai, T., Gao, G., Guo, H., Han, G., Ci, L. and Lou, J., “Lithium-Conducting Covalent-Organic-Frameworks as Artificial Solid-Electrolyte-Interphase on Silicon Anode for High Performance Lithium Ion Batteries”, Nano Energy 72 (2020): 104657. 
  8. Fang, Q.†, Shang, Q. †, Zhao, L., Wang, R., Zhang, Z., Yang, P., Sui, X., Qiu, X., Liu, X., Zhang, Q. and Zhang, Y. Ultrafast Charge Transfer in Perovskite Nanowire/2D Transition Metal Dichalcogenides Heterostructures, The Journal of Physical Chemistry Letters 9, 7 (2018): 1655-1662. 
  9. Fang, Q†., Zhang, Z†., Ji, Q†., Zhu, S., Gong, Y., Zhang, Y., Shi, J., Zhou, X., Gu, L., Wang, Q. and Zhang, Y. Transformation of monolayer MoS2 into multiphasic MoTe2: Chalcogen atom-exchange synthesis route, Nano. Res., 2017, 10, 2761-2771.
  10. Collaborative publications 
  11. Louie, S.; Jiang, Q.; Wisniewski, D. J.; Bao, S. T.; Zhang, H.; Chivukula, K.; Fang, Q.; Garudapalli, A.; Docherty, S. R.; Ng, F.; Steigerwald, M.; Zhong, Y.; Khodagholy, D.; Nuckolls, C. Contorted Acene Ribbons for Stable and Ultrasensitive Neural Probes. Sci. Adv. 2025, 11 (14), eadu2356.
  12. Song, Z.; Zhang, B.; Yang, Y.; Gao, G.; Tang, D.; Fang, Q.; Zhang, Y.; Shin, B.; Steinbach, D.; Ai, Q.; Zhao, X.; Han, Y.; Padture, N. P.; Sheldon, B. W.; Taniguchi, T.; Watanabe, K.; Gao, H.; Lou, J. Flaw-Size-Dependent Mechanical Interlayer Coupling and Edge-Reconstruction Embrittlement in van der Waals Materials. Nat. Mater. 2025, 24, 1554–1560.
  13. Yi, K.; Qin, W.; Huang, Y.; Wu, Y.; Feng, S.; Fang, Q.; Cao, X.; Deng, Y.; Zhu, C.; Zou, X.; Ang, K.-W.; Li, T.; Wang, X.; Lou, J.; Lai, K.; Hu, Z.; Zhang, Z.; Dong, Y.; Kalantar-Zadeh, K.; Liu, Z. Integration of High-κ Native Oxides of Gallium for Two-Dimensional Transistors. Nat. Electron. 2024, XX, 1–11. 
  14. Wang, Y.; Wang, K.; Ai, Q.; Funni, S. D.; Garudapalli, A.; Fang, Q.; Choi, S.; Yan, G.; Louie, S.; Liu, C.; Lou, J.; Cha, J.; Yeo, J.; Jin, Z.; Zhong, Y. Supramolecular Assembly of Fused Macrocycle-Cage Molecules for Fast Lithium-Ion Transport. J. Am. Chem. Soc. 2024, 146 (37), 25433–25438.
  15. Wen, X.; Zhang, B.; Wang, W.; Ye, F.; Yue, S.; Guo, H.; Gao, G.; Zhao, Y.; Fang, Q.; Nguyen, C.; Zhang, X.; Bao, J.; Robinson, J.; Ajayan, P. M.; Lou, J. 3D-Printed Silica with Nanoscale Resolution. Nat. Mater. 2021, 20 (11), 1506–1511. 
Position Available

We are recruiting motivated graduate students, research assistants and postdoctoral fellows. Our group works on various research topics on two-dimensional polymers (2DPs) and COFs, including molecular design, thin film fabrication, nanomechanics and device fabrication. Undergraduate students and visiting scholars are also welcome. If you are interested in my reseach, please email your CV and publications (if any) to Prof. Fang at qiyifang@cityu.edu.hk.

We particularly encourage applicants with research interests in the following areas: 
1. Synthesis of 2DPs or COFs
2. Nanomechanics of 2D materials.
3. AFM-based characterization.
4. Nanofabrication of polymers or 2D materials based devices.
5. Ion/molecular sieving.

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