[236]  "1D photonic crystal direct bandgap GeSn-on-insulator laser", H. J. Joo, Y. Kim, D. Burt, Y. Jung, L. Zhang, M. Chen, S. J. Parluhutan, D. H. Kang, C. Lee, S. Assali, Z. Ikonic, O. Moutanabbir, Y. H. Cho, C. S. Tan, and D. Nam, Appl. Phys. Lett.  (in press, 2021).

[235] "Universal patterning for 2D van der Waals Materials via direct optical lithography", S. R. Cho†, S. Ahn†, S. H. Lee†, H. Ha, T. S. Kim, C. Song, T. H. Im, P. Rani, M. Gyeon, K. Cho, M. S. Jang*, Y. H. Cho*, K. J. Lee*, and K. Kang*, Advanced Functional Materials 2105302 (2021).

[234]  "Highly efficient vacuum-evaporated CsPbBr₃ perovskite light-emitting diodes with an electrical conductivity enhanced polymer assisted passivation layer", N. Kim, M. Shin, S. Jun, B. Choi, J. Kim, J. Park, H. Kim, W. Jung, J. Y. Lee, Y. H. Cho, and B. Shin, ACS Applied Materials & Interfaces 13, 37323 (2021).

[233] (invited) "Photonic rocket structure grown by site-selective and bottom-up approach: a directional and Gaussian-like quantum emitter platform", M. Choi, S. Kim, S. Choi, and Y. H. Cho*, Appl. Phys. Lett. 119, 034001 (2021).

[232] "Nanoscale focus pinspot for high-purity quantum emitters via focused-ion-beam induced luminescence quenching", M. Choi, S. Jun, K. Y. Woo, H. K. Song, H. S. Yeo, S. Choi, D. Park, C. H. Park, and Y. H. Cho*, ACS Nano 15, 11317 (2021).

[231] "Room-temperature polaritonic non-Hermitian system with single microcavity", H. G. Song, M. Choi, K. Y. Woo, C. H. Park, and Y. H. Cho*, Nature Photonics 15, 582 (2021). - Introduced in Phys.org, K-Light, etc.

[230] "Metallic phase transition metal dichalcogenide quantum dots showing different optical charge excitation and decay pathways",  B. H. Kim, M. H. Jang, H. Yoon, H. J. Kim, Y. H. Cho, S. Jeon*, and S. H. Song*, NPG Asian Materials 13, 41 (2021).

[229] "Friction control by deformation mode in nanopatterned amorphous carbon", D. Shin, D. G. Kang, K. Y. Woo, Y. H. Cho, S. M. Han, and D. Jang*, Nano Letters 21, 107 (2021).