Welcome to Lei Group @ CityU MSE

We focus on plasmonics and nano-photonics of low-dimensional materials and structures, with particular interest in the fundamental physics of exciton/plasmon/phonon polaritons and their strong coupling, plasmon-enhanced light-matter interaction at the nanoscale and its applications in light harvesting, advanced biochemical sensing and biomedical imaging. Our group has direct access to a large number of 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).