Fengnian Xia

Website:

Xia Research Group

Tso-Ping Ma Professor of Electrical & Computer Engineering

Room / Office: Becton 519

Office Address:

15 Prospect Street

New Haven, CT 06511

Mailing Address:

P.O. Box 208284

New Haven, CT 06520

Phone: (203) 432-7271

Email: fengnian.xia@yale.edu

Degrees:

Ph.D., Princeton University
B.S., Tsinghua University, China

Interests:

Light-matter interaction and photonic devices; carrier transport and electronic devices; device applications in imaging, communications, and electronics; integration of emerging and traditional materials.

Selected Awards & Honors:

2024: Tso-Ping Ma Endowed Chair, Yale University
2023: Fellow of American Physical Society (APS)
2022: Fellow of Optica
2019: Presidential Early Career Award for Scientists and Engineers (PECASE)
2017-2023: Highly Cited Researcher, Clarivate Analytics
2016: National Science Foundation CAREER Award
2015: Barton L. Weller Endowed Chair, Yale University
2015: Office of Naval Research Young Investigator Program Awardee
2012: IBM Corporate Award (the highest technical prize by the CEO)
2011: TR35, MIT Technology Review's Top Young Innovator under 35
1998: Graduation with Highest Honor, Tsinghua University, Beijing, China

Selected Publications:

M. Cai and F. Xia, “An all-silicon solution”, Nature Photonics 18, 890-891 (2024). (News & Views).
M. Fortin-Deschênes, K. Watanabe, T. Taniguchi, and F. Xia, “Van der Waals epitaxy of tunable moirés enabled by alloying”, Nature Materials 23, 339-346 (2024).
B. Deng and F. Xia, “Large-angle twist effect”, Nature Photonics 17, 1021–1022 (2023). (News & Views).
M. Fortin-Deschênes and F. Xia, “Synthesis of black phosphorus films”, Nature Materials 22, 681–682 (2023). (News & Views).
S. Yuan, C. Ma, E. Fetaya, T. Mueller, D. Naveh, F. Zhang, F. Xia, “Geometric deep optical sensing”, Science 379, eade1220 (2023).
M. Fortin-Deschênes, R. Pu, Y.-F. Zhou, C. Ma, P. Cheung, K. Watanabe, T. Taniguchi, F. Zhang, X. Du, and F. Xia, “Uncovering topological edge states in twisted bilayer graphene”, Nano Letters 22, 6186-6193 (2022).
M. Fortin-Deschênes and F. Xia, "A tale of two dimensionalities," Nature Materials 21, 735–736 (2022). (News and Views).
C. Ma, S. Yuan, P. Cheung, K. Watanabe, T. Taniguchi, F. Zhang, and F. Xia, "Intelligent infrared sensing enabled by tunable moiré quantum geometry," Nature 604, 266-272 (2022).
S. Yuan, D. Naveh, K. Watanabe, T. Taniguchi, and F. Xia, “A wavelength-scale black phosphorus spectrometer,” Nature Photonics 15, 601-607 (2021).
B. Deng, C. Ma, Q. Wang, S. Yuan, K. Watanabe, T. Taniguchi, F. Zhang, and F. Xia, “Strong mid-infrared photoresponse in small-twist-angle bilayer graphene,” Nature Photonics 14, 549-553 (2020).
J. Liu, F. Xia, D. Xiao, F. J. García de Abajo, and D. Sun, “Semimetals for high-performance photodetection,” Nature Materials 19, 830-837 (2020).
C. Ma, Q. Wang, S. Mills, X. Chen, B. Deng, S. Yuan, C. Li, K. Watanabe, T. Taniguchi, X. Du, F. Zhang, and F. Xia, “Moiré band topology in twisted bilayer graphene,” Nano Letters 20, 6076-6083 (2020).
Z. Dai, G. Hu, Q. Ou, L. Zhang, F. Xia, F. J Garcia-Vidal, C. Qiu, and Q. Bao, “Artificial metaphotonics born naturally in two dimensions,” Chemical Reviews 120, 6197-6246 (2020).
C. Chen, X. Lu, B. Deng, X. Chen, Q. Guo, C. Li, C. Ma, S. Yuan, E. Sung, K. Watanabe, T. Taniguchi, L. Yang, and F. Xia, “Widely tunable mid-infrared light emission in thin-film black phosphorus,” Science Advances 6, eaay6134 (2020).
F. Xia, H. Wang, J. C. M. Hwang, A. H. Castro Neto, and L. Yang, “Black phosphorus and its isoelectronic materials,” Nature Reviews Physics 1, 306-317 (2019).
Q. Guo, R. Yu, C. Li, S. Yuan, B. Deng, F. J. García de Abajo, and F. Xia, “Efficient electrical detection of mid-infrared graphene plasmons at room temperature,” Nature Materials 17, 986-992 (2018).
C. Li, Y. Wu, B. Deng, Y. Xie, Q. Guo, S. Yuan, X. Chen, M. Bhuiyan, Z. Wu, K. Watanabe, T. Taniguchi, H. Wang, J. Cha, M. Snure, Y. Fei, and F. Xia, “Synthesis of crystalline black phosphorus thin film on sapphire,” Advanced Materials 30, 1703748 (2018).
X. Chen, X. Lu, B. Deng, O. Sinai, Y. Shao, C. Li, S. Yuan, V. Tran, K. Watanabe, T. Taniguchi, D. Naveh, L. Yang, and F. Xia, “Widely tunable black phosphorus mid-infrared photodetector,” Nature Communications 8, 1672 (2017).
B. Deng, V. Tran, Y. Xie, H. Jiang, C. Li, Q. Guo, X. Wang, H. Tian, S. J. Koester, H. Wang, J. J. Cha, Q. Xia, L. Yang, and F. Xia, “Efficient electrical control of thin-film black phosphorus bandgap,” Nature Communications 8, 14474 (2017).
Q. Guo, A. Pospischil, M. Bhuiyan, H. Jiang, H. Tian, D. Farmer, B. Deng, C. Li, S.-J. Han, H. Wang, Q. Xia, T.-P. Ma, T. Mueller, and F. Xia, "Black phosphorus mid-Infrared photodetectors with high gain," Nano Letters 16, 4648–4655 (2016).
F. Xia, "Flat talk," Nature Photonics 10, 205-206 (2016). (Interview)
X. Ling, H. Wang, S. Huang, F. Xia, and M. S. Dresselhaus, "The renaissance of black phosphorus," Proceedings of the National Academy of Sciences 112, 4523-4530 (2015).
X. Wang, A. M. Jones, K. L. Seyler, V. Tran, Y. Jia, H. Zhao, H. Wang, L. Yang, X. Xu, and F. Xia, "Highly anisotropic and robust excitons in monolayer black phosphorus," Nature Nanotechnology 10, 517–521 (2015).
X. Liu, T. Galfsky, Z. Sun, F. Xia, E. Lin, Y.-H. Lee, S. Kéna-Cohen, and V. Menon, "Strong light–matter coupling in two-dimensional atomic crystals," Nature Photonics 9, 30-34 (2015).
F. Xia, H. Wang, D. Xiao, M. Dubey, and A. Ramasubramaniam, "Two-dimensional material nanophotonics," Nature Photonics 8, 899-907 (2014).
T. Low, R. Roldan, H. Wang, F. Xia, P. Avouris, L. Moreno, and F. Guinea, "Plasmons and screening in monolayer and multilayer black phosphorus," Physical Review Letters 113, 106802 (2014).
F. Xia, H. Wang, and Y. Jia, "Rediscovering black phosphorus as an anisotropic layered material for optoelectronics and electronics," Nature Communications 5, 4458 (2014).
W. Zhu, T. Low, Y.-H. Lee, H. Wang, D. Farmer, J. Kong, F. Xia, and P. Avouris, "Electronic transport and device prospects of monolayer molybdenum disulphide grown by chemical vapor deposition," Nature Communications 5, 3087 (2014).
H. Yan, T. Low, W. Zhu, Y. Wu, M. Freitag, X. Li, F. Guinea, P. Avouris, and F. Xia, "Damping pathways of mid-infrared plasmons in graphene nanostructures," Nature Photonics 7, 394-399 (2013).
M. Freitag, T. Low, F. Xia, and P. Avouris, "Photoconductivity of biased graphene," Nature Photonics 7, 53-59 (2013).
H. Yan, X. Li, B. Chandra, G. Tulevski, Y. Wu, M. Freitag, W. Zhu, P. Avouris, and F. Xia, "Tunable infrared plasmonic devices using graphene/insulator stacks," Nature Nanotechnology 7, 330-334 (2012).
F. Xia, V. Perebeinos, Y. Lin, Y. Wu, and P. Avouris, "The origins and limits of metal-graphene junction resistance," Nature Nanotechnology 6, 179-184 (2011).
Y. Wu, Y. Lin, A. Bol, K. Jenkins, F. Xia, D, Farmer, Y. Zhu, and P. Avouris, "High-frequency, scaled graphene transistors on diamond-like carbon," Nature 472, 74-78 (2011).
T. Mueller, F. Xia, and P. Avouris, "Graphene photodetectors for high-speed optical communications," Nature Photonics 4, 297-301 (2010).
S. Assefa, F. Xia, and Y. Vlasov, "Reinventing Germanium avalanche photodetector for on-chip optical interconnects," Nature 464, 80-84 (2010).
F. Xia, D. Farmer, Y. Lin, and P. Avouris, "Graphene field-effect-transistors with high on/off current ratio and large transport bandgap at room temperature," Nano Letters 10, 715-718 (2010).
F. Xia, T. Muller, Y. Lin, A. Valdes-Garcia, and P. Avouris, "Ultrafast graphene photodetector," Nature Nanotechnology 4, 839-843 (2009).
F. Xia, L. Sekaric, and Y. Vlasov, "Ultra-compact optical buffers on a silicon chip," Nature Photonics 1, 65-71 (2007). (Cover story)
F. Xia, V. Menon, and S. Forrest, "Photonic integration using asymmetric twin-waveguide (ATG) technology (I): concepts and theory," IEEE Journal of Selected Topics in Quantum Electronics 11, 17-29 (2005).
V. Menon, F. Xia, and S. Forrest, "Photonic integration using asymmetric twin-waveguide (ATG) technology (II): devices," IEEE Journal of Selected Topics in Quantum Electronics 11, 30-42 (2005).

Selected Patents:

10,636,654: Wafer-scale synthesis of large-area black phosphorus material heterostructures
8,395,103: Avalanche impact ionization amplification devices
8,378,465: Method and apparatus for optical modulation
8,232,516: Avalanche impact ionization amplification devices
8,139,904: Method and apparatus for implementing optical deflection switching using coupled resonators
8,053,782: Single and few-layer graphene based photodetecting devices
7,999,344: Optoelectronic device with germanium photodetector
7,880,201: Optical modulator using a serpentine dielectric layer between silicon layers
7,790,495: Optoelectronic device with germanium photodetector
7,684,666: Method and apparatus for tuning an optical delay line
7,515,793: Waveguide photodetector
7,373,048: Polarization insensitive semiconductor optical amplifier
7,333,689: Photonic integrated devices having reduced absorption loss
6,795,622: Photonic integrated circuits

Faculty & Research