Selected Journal Publications: 

1. 1. B. Han, X. Yang, and J. Gao, "Circular dichroism in achiral metasurface induced by spatially selective coupling with molecules," Optics Letters, 50, 399-402 (2025). [link] 

   2. S. Ambardar, X. Yang, and J. Gao, "Uncovering upconversion photoluminescence in layered PbI2 above room temperature," Scientific Reports, 14, 26900 (2024). [link]

   3. H. Tang, L. Stan, D. A. Czaplewski, X. Yang, and J. Gao, "Infrared phase-change chiral metasurfaces with tunable circular dichroism," Optics Express, 32, 20136-20145 (2024). [link]

   4. S. Roy, X. Yang, and J. Gao, "Biaxial strain tuned upconversion photoluminescence of monolayer WS2," Scientific Reports, 14, 3860 (2024). [link]

   5. S. Roy, X. Yang, and J. Gao, "Uniaxial strain tuning of upconversion photoluminescence in monolayer WSe2", Adv. Photonics Res. 2300220 (2024). [link]

   6. F. Meng, X. Yang, and J. Gao, "Phonon-assisted upconversion photoluminescence of monolayer MoS2 at elevated temperatures," Optics Express, 31, 28437-28443 (2023). [link]

   7. F. Meng, X. Yang, and J. Gao, "High-temperature phonon-assisted upconversion photoluminescence of monolayer WSe2," Applied Physics Letters, 123, 013502 (2023). [link]

   8. H. Tang, L. Stan, D. A. Czaplewski, X. Yang, and J. Gao, "Wavelength-tunable infrared chiral metasurfaces with phase-change materials," Optics Express, 31, 21118-21127 (2023). [link] 

   9. A. Mushtaq, X. Yang, and J. Gao, "Unveiling room temperature upconversion photoluminescence in monolayer WSe2," Optics Express, 30, 45212-45220 (2022). [link]

   10. R. P. N. Tripathi, X. Yang, and J. Gao, "Anisotropic third-harmonic generation of exfoliated As2S3 thin flakes," Optics Express, 30, 22661-22670 (2022). [link]

   11. A. Dasgupta, X. Yang, and J. Gao, "Natural 2D layered mineral cannizzarite with anisotropic optical responses," Scientific Reports, 12, 10006 (2022). [link]

   12. H. Tang, D. Rosenmann, D. A. Czaplewski, X. Yang, and J. Gao, "Dual-band selective circular dichroism in mid-infrared chiral metasurfaces," Optics Express, 30, 20063-20075 (2022). [link]

   13. R. P. N. Tripathi, X. Yang, and J. Gao, "Polarization-sensitive optical responses from natural layered hydrated sodium sulfosalt gerstleyite," Scientific Reports, 12, 4242 (2022). [link] 

   14. A. Dasgupta, X. Yang, and J. Gao, "Naturally occurring van der Waals heterostructure lengenbachite with strong in-plane structural and optical anisotropy," npj 2D Materials and Applications, 5, 88 (2021). [link]

   15. R. P. N. Tripathi, X. Yang, and J. Gao, "Polarization-dependent optical responses in natural 2D layered mineral teallite," Scientific Reports, 11, 21895 (2021). [link] 

   16. R. P. N. Tripathi, X. Yang, and J. Gao, "Van der Waals layered mineral getchellite with anisotropic linear and nonlinear optical responses," Laser & Photonics Reviews, 2021, 2100182 (2021). [link] 

   17. R. P. N. Tripathi, X. Yang, and J. Gao, "Polarization-dependent optical responses in natural 2D layered mineral teallite," Scientific Reports, 11, 21895 (2021). [link]

   18. A. Dasgupta, X. Yang, and J. Gao, "Nonlinear beam shaping with binary phase modulation on patterned WS2 monolayer," ACS Photonics, 7, 2506-2514 (2020). [link]

   19. A. Dasgupta, J. Gao, and X. Yang, "Anisotropic third-harmonic generation in layered germanium selenide," Laser & Photonics Reviews, 14, 1900416 (2020). [link]

   20. Z. Li, D. Rosenmann, D. Czaplewski, X. Yang, and J. Gao, "Strong circular dichroism in chiral plasmonic metasurfaces optimized by micro-genetic algorithm," Optics Express, 27, 28313 (2019). [link]

   21. A. Dasgupta, J. Gao, and X. Yang, "Atomically Thin Nonlinear Transition Metal Dichalcogenide Holograms," Nano Lett. 19, 6511 (2019). [link]

   22. Y. Zhang, X. Yang, and J. Gao, "Generation of nondiffracting vector beams with ring-shaped plasmonic metasurfaces," Physical Review Applied, 11, 064059 (2019). [link]

   23. Y. Zhang, X. Yang, and J. Gao, "Orbital angular momentum transformation of optical vortex with aluminum metasurfaces," Scientific Reports, 9, 9133 (2019). [link]

   24. A. Dasgupta, J. Gao, and X. Yang, "Second-harmonic optical vortex conversion from WS2 monolayer," Scientific Reports, 9, 8780 (2019). [link]

   25. L. Li, C. J. Mathai, S. Gangopadhyay, X. Yang, and J. Gao, "Spontaneous emission rate enhancement with aperiodic Thue-Morse multilayer," Scientific Reports, 9, 8473 (2019). [link]

   26. Y. Chen, X. Yang, and J. Gao, "3D Janus plasmonic helical nanoapertures for polarization-encrypted data storage," Light: Science & Applications, 8, 45 (2019). [link]

   27. W. Liu, X. Yang, and J. Gao, "Optical transportation and accumulation of micro-particles by self-accelerating cusp beams," Physical Review A, 99, 043839 (2019). [link]

   28. W. Wang, X. Yang, T. S. Luk, and J. Gao, "Enhanced quantum dots spontaneous emission with metamaterial perfect absorbers," Appl. Phys. Lett. 114, 021103 (2019). [link]

   29. W. Wang, X. Yang, and J. Gao, "Scaling law of Purcell factor in hyperbolic metamaterial cavities with dipole excitation," Optics Letters, 44, 471-474 (2019). [link]

   30. Z. Li, L. Stan, D. Czaplewski, X. Yang, and J. Gao, "Broadband infrared binary-pattern metasurface absorbers with micro genetic algorithm optimization," Optics Letters, 44, 114-117 (2018). [link]

   31. L. Ouyang, W. Wang, D. Rosenmann, D. Czaplewski, J. Gao, and X. Yang, "Near-infrared chiral plasmonic metasurface absorbers," Optics Express, 26, 31484-31489 (2018). [link]

   32. Y. Chen, X. Yang, and J. Gao, "Spin-controlled wavefront shaping with plasmonic chiral geometric metasurfaces," Nature - Light: Science & Applications, 7, 84 (2018). [link]

   33. Y. Chen, J. Gao, and X. Yang, "Direction-controlled bifunctional metasurface polarizers," Laser & Photonics Reviews, 12, 1800198 (2018). [link]

   34. Y. Chen, X. Yang, and J. Gao, "Spin-selective second-harmonic vortex beam generation with Babinet-inverted plasmonic metasurfaces," Advanced Optical Materials, 6, 1800646 (2018). [link]

   35. Y. Zhang, X. Yang, and J. Gao, "Twisting phase and intensity of light with plasmonic metasurfaces," Scientific Reports, 8, 4884 (2018). [link]

   36. Z. Li, L. Stan, D. Czaplewski, X. Yang, and J. Gao, "Wavelength-selective mid-infrared metamaterial absorbers with multiple tungsten cross resonators," Optics Express, 26, 5616-5631 (2018). [link]

   37. Y. Zhang, W. Liu, J. Gao, and X. Yang, "Generating focused 3D perfect vortex beams by plasmonic metasurfaces," Advanced Optical Materials, 6, 1701228 (2018). [link]

   38. Y. Chen, J. Gao, and X. Yang, "Chiral metamaterials of plasmonic slanted nanoapertures with symmetry breaking," Nano Letters, 18, 520 (2018). [link]

   39. W. Wan, J. Gao, and X. Yang, "Metasurface holograms for holographic imaging," Advanced Optical Materials, 5, 1700541 (2017). [link]

   40. W. Cao, X. Yang, and J. Gao, "Broadband polarization conversion with anisotropic plasmonic metasurfaces," Scientific Reports, 7, 8841 (2017). [link]

   41. W. Wang, D. Rosenmann, D. Czaplewski, X. Yang, and J. Gao, "Realizing structural color generation with aluminum plasmonic V-groove metasurfaces," Optics Express, 25, 20454 (2017). [link]

   42. L. Li, W. Wang, T. S. Luk, X. Yang and J. Gao, "Enhanced Quantum Dot Spontaneous Emission with Multilayer Metamaterial Nanostructures," ACS Photonics, 4, 501 (2017). [link]

   43. W. Wan, J. Gao and X. Yang, "Full-color plasmonic metasurface holograms," ACS Nano, 10, 10671 (2016). [link]

   44. Z. Li*, W. Wang*, D. Rosenmann, D. Czaplewski, X. Yang, and J. Gao, "All-metal structural color printing based on aluminum plasmonic metasurfaces," (*equal contribution), Optics Express, 24, 20472-20480 (2016). [link]

   45. J. Zeng, L. Li, X. Yang, and J. Gao, "Generating and separating twisted light by gradient-rotation split-ring antenna metasurfaces," Nano Letters, 16, 3101 (2016). [link]

   46. W. Wan, X. Yang and J. Gao, "Strong coupling between mid-infrared localized plasmons and phonons," Optics Express, 24, 12367-12374 (2016). [link]

   47. L. Sun, X. Yang, and J. Gao, "Analysis of nonlocal effective permittivity and permeability in symmetric metal-dielectric multilayer metamaterials," Journal of Optics, 18, 065101 (2016). [link]

   48. F. Cheng, X. Yang, and J. Gao, "Ultrasensitive detection and characterization of molecules with infrared plasmonic metamaterials," Scientific Reports, 5, 14327 (2015). [link]

   49. J. Zeng, J. Gao, T. S. Luk, N. M. Litchinitser, and X. Yang, "Structuring Light by Concentric-Ring Patterned Magnetic Metamaterial Cavities," Nano Letters, 15, 5363-5368 (2015). [link].

   50. F. Cheng, X. Yang, D. Rosenmann, L. Stan, D. Czaplewski, and J. Gao, "Enhanced structural color generation in aluminum metamaterials coated with a thin polymer layer," Optics Express, 23, 25329-25339 (2015). [link]

   51. L. Sun, Z. Li, T. S. Luk, X. Yang, and J. Gao, "Nonlocal effective medium analysis in symmetric metal-dielectric multilayer metamaterials,"Physical Review B, 91, 195147 (2015). [link]

   52. H. Deng*, Z. Li*, L. Stan, D. Rosenmann, D. Czaplewski, J. Gao, and X. Yang, "Broadband perfect absorber based on one ultrathin layer of refractory metal," (*equal contribution), Optics Letters,40, 2592 (2015). [link]

   53. L. Sun, X. Yang, W. Wang, and J. Gao, "Diffraction-free optical beam propagation with near-zero phase variation in extremely anisotropic metamaterials," Journal of Optics, 17, 035101(2015). [link]

   54. F. Cheng, X. Yang, and J. Gao, "Enhancing intensity and refractive index sensing capability with infrared plasmonic perfect absorbers," Optics Letters, 39, 3185 (2014). [link]

   55. J. Gao, and X. Yang, "Anomalous optical coupling between two silicon wires of a slot waveguide in epsilon-near-zero metamaterials," Optics Communications, 314, 18-22 (2014). [link]

   56. L. Sun, X. Yang, and J. Gao, "Loss-compensated broadband epsilon-near-zero metamaterials with gain media," Applied Physics Letters, 103, 201109 (2013). [link]

   57. X. Yang, C. Hu, H. Deng, D. Rosenmann, D. A. Czaplewski, and J. Gao, "Experimental demonstration of near-infrared epsilon-near-zero multilayer metamaterial slabs," Optics Express, 21, 23631 (2013). [link]

   58. X.R. Jin, L. Sun, X. Yang, and J. Gao, "Quantum entanglement in plasmonic waveguides with near-zero mode indices," Optics Letters, 38, 4078 (2013). [link]

   59. J. Gao, L. Sun, H. Deng, C. J. Mathai, S. Gangopadhyay, and X. Yang, "Experimental realization of epsilon-near-zero metamaterial slabs with metal-dielectric multilayers," Applied Physics Letters, 103, 051111 (2013). [link]

   60. J. Gao, S. Combrie, B. Liang, P. Schmitteckert, G. Lehoucq, S. Xavier, Xinan Xu, K. Busch, D. L. Huffaker, A. de Rossi, and C. W. Wong, "Strongly coupled slow-light polaritons in one-dimensional disordered localized states," Scientific Reports, 3, 1994 (2013). [link]

   61. X.R. Jin and J. Gao, "Quantum phase flip gate based on plasmonic double-bar resonators", Optics Letters, 38, 2110-2112 (2013). [link]

   62. J. Gao, J. F. McMillan, and C. W. Wong, "Nanophotonics: Remote on-chip coupling", Nature Photonics 6, 7 (2012). [link]

   63. J. Gao, J. F. McMillan, M. C. Wu, J. Zheng, S. Assefa and C. W. Wong, "Demonstration of an air-slot mode-gap confined photonic crystal slab nanocavity with ultrasmall mode volumes," Appl. Phys. Lett.96, 051123 (2010). [link]

   64. J. Gao, F. W. Sun, and C. W. Wong, "Implementation scheme for quantum controlled phase-flip gate through quantum dot in silicon slow-light photonic crystal waveguide," Appl. Phys. Lett. 93,151108 (2008). [link]

   65. R. Bose, J. F. McMillan, J. Gao, C. J. Chen, D. V. Talapin, C. B. Murray, K. M. Rickey, and C. W. Wong, "Temperature-tuning of near-infrared (1.5um) monodisperse quantum dot solids toward controllable Forster energy transfer," Nano Lett. 8, 2006 (2008). [link]

   66. J. Gao, P. Heider, C. Chen, X. Yang, C. Husko, and C. W. Wong, "Observations of whispering gallery modes in asymmetric optical resonators with rational caustics," Appl. Phys. Lett. 91, 181101 (2007). [link]