Publications

• 50. Enhancing Resonant Second-Harmonic Generation in Bilayer WSe₂ by Layer-Dependent Exciton-Polaron Effect
  

  S. Cha, T. Ouyang, T. Taniguchi, K. Watanabe, N. Gabor & C.H. Lui
  Nano Lett. (2024)

• 49. Enhanced Plasmonic Trapping and Fluorescent Emission of Nitrogen-Vacancy Nanodiamonds Using a High-Efficiency Nanofocusing Device
  

  B. Liang, Y. Xu, N. Yu, Z. Yang, M. Wilson, D. Xu, R. A. Shams, L. Wang, C. H. Lui, R. Yan & M. Liu
  Nano Lett. 24, 37, 11661-11668 (2024)

• 48. Electric-field tunable Type-I to Type-II band alignment transition in MoSe₂/WS₂ heterobilayers
  

  J. Kistner-Morris, A. Shi, E. Liu, T. Arp, F. Farahmand, T. Taniguchi, K. Watanabe, V. Aji, C.H. Lui & N. Gabor
  Nature Communications 15, 4075 (2024)

• 47. Transforming into fully commensurate bilayers
  

  C. H. Lui
  Nature Materials (2023)

• 46. Thickness- and Twist-Angle-Dependent Interlayer Excitons in Metal Monochalcogenide Heterostructures
  

  W. Zheng, L. Xiang, F. A. de Quesada, M. Augustin, Z. Lu, M. Wilson, A. Sood, F. Wu, D. Shcherbakov, S. Memaran, R. E. Baumbach, G. T. McCandless, J. Y. Chan, S. Liu, J. H. Edgar, C. N. Lau, C. H. Lui, E. J. G. Santos, A. Lindenberg, D. Smirnov & L. Balicas
  ACS Nano 16, 11, 18695–18707 (2022)

• 45. Optical absorption of interlayer excitons in transition-metal dichalcogenide heterostructures
  

  E. Barré, O. Karni, E. Liu, A. O'Beirne, X. Chen, H. Ribeiro, L. Yu, B. Kim, T. Taniguchi, K. Watanabe, K. Barmak, C. H. Lui, S. Refaely-Abramson, F.H. da Jornada & T. F. Heinz
  Science 376, 6591, 406-410 (2022)

• 44. Electrically Switchable Intervalley Excitons with Strong Two-Phonon Scattering in Bilayer WSe₂
  

  M. Altaiary, E. Liu, C. T. Liang, F. C. Hsiao, J. van Baren, T. Taniguchi, K. Watanabe, N. Gabor, Y. C. Chang & C. H. Lui
  Nano Lett. 22, 5, 1829–1835 (2022)

• 43. Exciton-polaron Rydberg states in monolayer MoSe₂ and WSe₂
  

  E. Liu, J. van Baren, Z. Lu, T. Taniguchi, K. Watanabe, D. Smirnov, Y. C. Chang & C. H. Lui
  Nature Communications 12, 6131 (2021)

• 42. Excitonic and Valley-Polarization Signatures of Fractional Correlated Electronic Phases in a WSe₂/WS₂ Moiré Superlattice
  

  E. Liu, T. Taniguchi, K. Watanabe, N. Gabor, Y. T. Cui & C. H. Lui
  Phys. Rev. Lett.  127, 037402 (2021)

• 41. Signatures of moiré trions in WSe₂/MoSe₂ heterobilayers
  

  E. Liu, E. Barré, J. van Baren, M. Wilson, T. Taniguchi, K. Watanabe, Y. T. Cui, N. M. Gabor, T. F. Heinz, Y. C. Chang & C. H. Lui
  Nature 594, 46–50 (2021)
  [featured in UCR News and highlighted by the Department of Energy]

• 40. Spin-induced linear polarization of photoluminescence in antiferromagnetic van der Waals crystals
  

  X. Wang, J. Cao, Z. Lu, A. Cohen, H. Kitadai, T. Li, Q. Tan, M. Wilson, C. H. Lui, D. Smirnov, S. Sharifzadeh & X. Ling
  Nature Materials 20, 964–970 (2021)

• 39. Hexagonal Boron Nitride Encapsulation of Organic Microcrystals and Energy-Transfer Dynamics
  

  W. Li, H. Tian, J. van Baren, A. Berges, M. Altaiary, E. Liu, E. Bekyarova, C. H. Lui, J. Liu, & C. J. Bardeen
  J. Phys. Chem. C 124, 38, 21170–21177 (2020)

• 38. Multipath Optical Recombination of Intervalley Dark Excitons and Trions in Monolayer WSe₂
  

  E. Liu, J. van Baren, C. T. Liang, T. Taniguchi, K. Watanabe, N. M. Gabor, Y. C. Chang & C. H. Lui
  Phys. Rev. Lett.  124, 196802 (2020)
  [featured in Phys.org, Science Daily, Innovations Report, and UCR News]

• 37. Landau-quantized excitonic absorption and luminescence in a monolayer valley semiconductor
  

  E. Liu, J. van Baren, T. Taniguchi, K. Watanabe, Y. C. Chang & C. H. Lui
  Phys. Rev. Lett.  124, 097401 (2020)
  [featured in Inside UCR]

• 36. Shaping Organic Microcrystals Using Focused Ion Beam Milling
  

  W. Li, J. van Baren, A. Berges, E. Bekyarova, C. H. Lui & C. J. Bardeen
  Cryst. Growth Des. 20, 3, 1583-1589 (2020)

• 35. Valley-selective chiral phonon replicas of dark excitons and trions in monolayer WSe₂
  

  E. Liu, J. van Baren, T. Taniguchi, K. Watanabe, Y. C. Chang & C. H. Lui
  Phys. Rev. Research  1, 032007(R) (2019)
  [featured in Phys.org, Science Daily, sciencesprings, News Beezer, and UCR News]

• 34. Gate tunable dark trions in monolayer WSe₂
  

  E. Liu, J. van Baren, Z. Lu, M. M. Altaiary, T. Taniguchi, K. Watanabe, D. Smirnov & C. H. Lui
  Phys. Rev. Lett.  123, 027401 (2019)
  [featured in Phys.org, Science Daily, EurekaAlert, and UCR News]

• 33. Magnetophotoluminescence of exciton Rydberg states in monolayer WSe₂
  

  E. Liu, J. van Baren, T. Taniguchi, K. Watanabe, Y. C. Chang & C. H. Lui
  Phys. Rev. B 99, 205420 (2019) (Editor's Suggestion)

• 32. Stacking-dependent interlayer phonons in 3R and 2H MoS₂
  

  J. van Baren, G. Ye, J. A. Yan, Z. Ye, P. Rezaie, P. Yu, L. Zheng, R. He & C. H. Lui
  2D Materials  6, 025022 (2019)

• 31. Book Chapter: Raman Spectroscopy of van der Waals Heterostructures
  

  C. H. Lui
  Book title: Raman Spectroscopy of Two-Dimensional Materials  Chapter 4, Springer (2019); DOI: 10.1007/978-981-13-1828-3

• 30. Giant intrinsic photoresponse in pristine graphene
  

  Q. Ma, C. H. Lui, J. C. W. Song, Y. Lin, J. F. Kong, Y. Cao, T. H. Dinh, N. L. Nair, W. Fang, K. Watanabe, T. Taniguchi, S. Y. Xu, J. Kong, T. Palacios, N. Gedik, N. M. Gabor & P. Jarillo-Herrero
  Nature Nanotechnology 14, 145-150 (2019)
  [featured in UCR News]

• 29. Surface Fluorination for Controlling the PbS Quantum Dot Bandgap and Band Offset
  

  P. Xia, Z. Liang, M. Mahboub, J. van Baren, C. H. Lui, J. Jiao, K. R. Graham & M. L. Tang
  Chemistry of Materials  30, 4943-4948 (2018)

• 28. Midgap states in PbS quantum dots induced by Cd and Zn enhance photon upconversion
  

  M. Mahboub, P. Xia, J. van Baren, X. Li, C. H. Lui & M. L. Tang
  ACS Energy Lett.  3, 767-772 (2018)

• 27. Observation of exciton redshift–blueshift crossover in monolayer WS₂
  

  E. J. Sie, A. Steinhoff, C. Gies, C. H. Lui, Q. Ma, M. Rosner, G. Schonhoff, F. Jahnke, T. O. Wehling, Y.-H. Lee, J. Kong, P. Jarillo-Herrero & N. Gedik
  Nano Lett.  17, 4210-4216 (2017)

• 26. Large, valley-exclusive Bloch-Siegert shift in monolayer WS₂
  

  E. J. Sie, C. H. Lui, Y.-H. Lee, L. Fu, J. Kong & N. Gedik
  Science 355, 6329, 1066-1069 (2017)
  [featured in Phys.org]

• 25. Observation of intervalley biexcitonic optical Stark effect in monolayer WS₂
  

  E. J. Sie, C. H. Lui, Y.-H. Lee, J. Kong & N. Gedik
  Nano Lett. 16, 7421–7426 (2016)

• 24. Interlayer breathing and shear modes in NbSe₂ atomic layers
  

  R. He, J. van Baren, J.-A. Yan, X. Xi, Z. Yi, G. Ye, I-H. Lu, S. M. Leong & C. H. Lui
  2D Materials 3, 031008 (2016)

• 23. Coupling and stacking order of ReS₂ atomic layers revealed by ultralow-frequency Raman spectroscopy
  

  R. He, J. A. Yan, Z. Yin, Z. Ye, G. Ye, J. Cheng, J. Li & C. H. Lui
  Nano Lett. 16, 1404−1409 (2016)
  [featured in Advances in Engineering]

Postdoc Research at MIT
• 22. Tuning ultrafast electron thermalization pathways in a van der Waals heterostructure
  

  Q. Ma, T. Anderson, N. Nair, N. Gabor, M. Massicotte, C. H. Lui, A. Young, W. Fang, K. Watanabe, T. Taniguchi, J. Kong, N. Gedik, F. Koppens & P. Jarillo-Herrero
  Nature Physics 12, 455-459 (2016).
  [featured in UCR Today]

• 21. Observation of interlayer phonon modes in van der Waals heterostructures
  

  C. H. Lui, Z. Ye, C. Ji, K.-C. Chiu, C.-T. Chou, T. I. Andersen, C. Means-Shively, H. Anderson, J.-M. Wu, T. Kidd, Y.-H. Lee & R. He
  Phys. Rev. B 91, 165403 (2015)

• 20. Stacking-dependent shear modes in trilayer graphene

  C. H. Lui, Z. Ye, C. Keiser, E. B. Barros & R. He
  Appl. Phys. Lett. 106, 041904 (2015)

• 19. Trion-induced negative photoconductivity in monolayer MoS₂

  C. H. Lui, A. J. Frenzel, D. Pilon, Y. H. Lee, X. Ling, G. M. Akselrod, J. Kong & N. Gedik
  Phys. Rev. Lett. 113, 166801 (2014)    
  [Editor’s Suggestion; featured in MIT News, Department of Energy, and SPIE Newsroom]

• 18. Temperature-activated layer-breathing vibrations in few-layer graphene

  C. H. Lui*, Z. Ye*, C. Keiser, X. Xiao & R. He
  Nano Lett. 14, 4615-4621 (2014) 

• 17. Semiconducting-to-metallic photoconductivity crossover and temperature-dependent Drude weight in graphene

  A. J. Frenzel, C. H. Lui, Y. C. Shin, J. Kong & N. Gedik
  Phys. Rev. Lett. 111, 127401 (2014) 
  [featured in MIT News ]

• 16. Spin induced optical conductivity in the spin liquid candidate herbertsmithite

  D. V. Pilon, C. H. Lui, T. H. Han, D. Shrekenhamer, A. J. Frenzel, W. J. Padilla, Y. S. Lee & N. Gedik
  Phys. Rev. Lett. 111, 127401 (2013)    
  [featured in MIT News and Novus Light Technologies Today ] 

• 15. Observation of suppressed terahertz absorption in photoexcited graphene 

  A. J. Frenzel, C. H. Lui, W. Fang, N. L. Nair, P. K. Herring, P. Jarillo-Herrero, J. Kong & N. Gedik 
  Appl. Phys. Lett. 102, 113111 (2013)  

PhD Research at Columbia University
• 14.  Tunable infrared phonon anomalies in trilayer graphene 

  C. H. Lui, E. Cappelluti, Z. Q. Li & T. F. Heinz.
  Phys. Rev. Lett. 110, 185504 (2013)  

• 13.  Measurement of layer breathing mode vibrations in few-layer graphene 

  C. H. Lui & T. F. Heinz
  Phys. Rev. B (Rapid Communication) 87, 121404(R) (2013)

• 12.  Real-time observation of interlayer vibrations in bilayer and few-layer graphene 

  D. Boschetto, L. M. Malard, C. H. Lui, K. F. Mak, Z. Q. Li, H. G. Yan & T. F. Heinz
  Nano Lett. 13, 4620-4623 (2013) 

• 11.  Observation of layer-breathing mode vibrations in few-layer graphene through combination Raman scattering 

  C. H. Lui, L. M. Malard, S. H. Kim, G. Lantz, F. E. Laverge, R. Saito & T. F. Heinz
  Nano Lett. 12, 5539-5544 (2012)  

• 10.  Water-gated charge doping of graphene induced by mica substrates 

  J. Shim*, C. H. Lui*, T. Y. Ko, Y. Yu, P. Kim, T. F. Heinz & S. Ryu
  Nano Lett. 12, 648-654 (2012)  

• 9.  Structure-dependent Fano resonances in the infrared spectra of phonons in few-layer graphene 

  Z. Q. Li, C. H. Lui, E. Cappelluti, L. Benfatto, K. F. Mak, G. L. Carr, J. Shan & T. F. Heinz
  Phys. Rev. Lett. 108, 156801 (2012) 

• 8.  Observation of an electrically tunable band gap in trilayer graphene 

  C. H. Lui, Z. Q. Li, K. F. Mak, E. Cappelluti & T. F. Heinz.
  Nature Physics 7, 944-947 (2011)    
  [featured in Nature Physics] 

• 7. Raman spectra of out-of-plane phonons in bilayer graphene 

  K. Sato, J. S. Park, R. Saito, C. Cong, T. Yu, C. H. Lui, T. F. Heinz, G. Dresselhaus & M. S. Dresselhaus
  Phys. Rev. B 84, 035419 (2011)

• 6.  Ultrafast photoluminescence from graphene 

  C. H. Lui, K. F. Mak, J. Shan & T. F. Heinz
  Phys. Rev. Lett. 105, 127404 (2010) 

• 5.  Imaging stacking order in few-layer graphene 

  C. H. Lui, Z. Q. Li, Z. Chen, P. V. Klimov, L. E. Brus & T. F. Heinz
  Nano Lett. 11, 164-169 (2010) 

• 4. Measurement of the thermal conductance of the graphene/SiO₂ interface 

  K. F. Mak, C. H. Lui & T. F. Heinz
  App. Phys. Lett. 97, 221904 (2010) 

• 3.  Ultraflat graphene 

  C. H. Lui, L. Liu, K. F. Mak, G. W. Flynn & T. F. Heinz
  Nature 462, 339-341 (2009) 
  [featured in ChemPhysChem, Nanotechweb.org , Scientific American , and Chemistry World]

• 2.  Observation of an electric-field-induced band gap in bilayer graphene by infrared spectroscopy 

  K. F. Mak, C. H. Lui, J. Shan & T. F. Heinz 
  Phys. Rev. Lett. 102, 256405 (2009)

• 1. Measurement of the optical conductivity of graphene 

  K. F. Mak, M. Y. Sfeir, Y. Wu, C. H. Lui, J. A. Misewich & T. F. Heinz
  Phys. Rev. Lett. 101, 196405 (2008) 

• Thesis: Investigations of the Electronic, Vibrational and Structural Properties of Single and Few-Layer Graphene 

  C. H. Lui, Columbia University, Ph.D. Adviser: Tony F. Heinz (2011)