Welcome to The Nanophotonics Research Group @ CityU MSE

Our research is focused on nano-photonics, optoelectronics and low-dimensional quantum materials, with particular interest in the fundamental physics related to cavity-enhanced light-matter interaction at the nanoscale, including nonlinear nanophotonics, quantum plasmonics, polariton physics and devices based low-dimensional quantum materials. These fundamental studies are relevant to many exciting applications in miniaturized photonic and optoelectronic devices, energy harvesting, conversion, storage and saving, advanced biochemical sensing and biomedical imaging. We have direct access to a large number of advanced optical measurement systems for absorption / scattering, reflection / transmission, fluorescence and Raman spectroscopies at the single-particle level, with functionalities ranging from near- to far-field, linear to nonlinear, steady state to time-resolved and ultrafast regimes.

Invited review articles

1. X. R. Gan, D. Y. Lei*, R. Q. Ye, H. M. Zhao, K.-Y. Wong, "Transition metal dichalcogenides-based mixed-dimensional heterostructures for the visible light-driven photocatalysis: Dimensionality and interface engineering", Nano Research 14 (6), 2003-2022 (2021).

2. Z. W. Peng#, X. L. Chen#, Y. L. Fan#, D. J. Srolovitz, D. Y. Lei*, "Strain engineering of 2D semicondcutors and graphene: From strain-field theory to band-structure tuning and photonic applications", Light: Science & Applications 9, 190 (2020).
3. Z. L. Cao#, H. Gao#, M. Qiu, W. Jin, S. Z. Deng, K.-Y. Wong, D. Y. Lei*,
"Chirality transfer from sub-nanometer biochemical molecules to sub-micrometer plasmonic metastructures: Physiochemical mechanisms and biosensing opportunities", Advanced Materials 32 (41), 1907151 (2020).

4. P. G. Chen, T. W. Lo, Y. L. Fan, S. B. Wang, H. T. Huang, D. Y. Lei*, "Chiral coupling of valley excitons and light through photonic spin–orbit interactions", Advanced Optical Materials 8, 1901233 (2020).

5. Y. K. Xu, T. W. Lo, L. Zhang, D. Y. Lei*, "The preparation, characterization and application of ultra-smooth, low-loss plasmonics noble metal films", SCIENTIA SINICA Physica, Mechanica & Astronomica 49, 124206 (2019).

6. G.-C. Li, Q. Zhang, S. A. Maier, D. Y. Lei*, "Plasmonic particle-on-film nanocavities: A versatile platform for plasmon-enhanced spectroscopy and photochemistry", Nanophotonics 7, 1865-1889 (2018).

7. X. R. Gan, D. Y. Lei*, K.-Y. Wong*, "Two-dimensional layered nanomaterials for visible-light-driven photocatalytic water splitting", Materials Today Energy 10, 352-367 (2018).

8. M. Qiu, L. Zhang, Z. X. Tang, W. Jin, C.-W. Qiu*, D. Y. Lei*, "3D metaphotonic nanostructures with intrinsic chirality", Advanced Functional Materials 28, 1803147 (2018).

9. N. C. Panoiu*, W. Sha*, D. Y. Lei*, G.-C. Li*, "Nonlinear optics in plasmonic nanostructures", Journal of Optics 20, 083001 (2018).

10. X. Yu#, D. Y. Lei#, F. Amin, R. Hartmann, G. P. Acuna, A. Guerrero-MartĂ­nez, S. A. Maier, P. Tinnefeld, S. Carregal-Romero, W. J. Parak*, "Distance control in-between plasmonic nanoparticles via biological and polymeric spacers", Nano Today 8, 480-493 (2013).