2025

20 | "Mid-infrared group-IV nanowire laser"

Y. Kim†, S. Assali†, J. Ge, S. Koelling, M. Luo, L. Luo, H. Joo, J. Tan, X. Shi, Z. Ikonic, H. Li, O. Moutanabbir*, D. Nam*

Science Advances, Accepted (2025) 

19 | "Dynamic tuning of single-photon emission in monolayer WSe2 via localized strain engineering"

Y. Yu†, J. Ge†, M. Luo, I. Seo, Y. Kim, J. Eng, K. Lu, T. Wei, S. Lee, W. Gao, H. Li*, D. Nam*

Nano Letters 25, 3438-3444 (2025) 

2024

18 | "Tensile-strained GeSn microbridge lasers with lithographically controllable emission wavelengths"

M. Chen†, H. Joo†, Y. Kim, E. Toh, E. Quek, Z. Ikonic, W. Du*, S. Yu*, D. Nam*

ACS Photonics 11, 4502-4506 (2024)

17 | "Actively tunable laser action in GeSn nanomechanical oscillators"

H. Joo†, J. Liu†, M. Chen†, D. Burt, B. Chomet, Y. Kim, X. Shi, K. Lu, L. Zhang, Z. Ikonic, Y. Sohn, C. Tan, D. Gacemi, A. Vasanelli, C. Sirtori*, Y. Todorov*, D. Nam*

Nature Nanotechnology 19, 1116-1121 (2024) 

Covered by News & Views in Nature Nanotechnology

Covered by Dong-A Ilbo, etc.

2023

16 | "All-around HfO2 stressor for tensile strain in GeSn-on-insulator nanobeam lasers"

H. Joo†, Y. Kim†, M. Chen, D. Burt, L. Zhang, B. Son, M. Luo, Z. Ikonic, C. Lee, Y. Cho, C. Tan, D. Nam*

Advanced Optical Materials 11, 2301115 (2023) 

15 | "Enhanced second-harmonic generation in strained germanium-on-insulator microdisks for integrated quantum photonic technologies"

J. Tan†, X. Shi†, K. Lu, H. Joo, Y. Kim, M. Chen, L. Zhang, C. Tan, K. Lim, E. Quek, D. Nam*

Optics Letters 48, 4269-4271 (2023) 

14 | "Short-wave infrared cavity resonances in a single GeSn nanowire"

Y. Kim†, S. Assali†, H. Joo, S. Koelling, M. Chen, L. Luo, X. Shi, D. Burt, Z. Ikonic, D. Nam*, O. Moutanabbir*

Nature Communications 14, 4393 (2023) 

13 | "High-precision wavelength tuning of GeSn nanobeam lasers via dynamically controlled strain engineering"

Y. Kim†, H. Joo†, M. Chen, B. Son, D. Burt, X. Shi, L. Zhang, Z. Ikonic, C. Tan, D. Nam*

Advanced Science 10, 2207611 (2023) 

Selected for Inside Back Cover of the Issue

Covered by eeNews Europe, etc.

12 | "Extended-SWIR GeSn LEDs with reduced footprint and efficient operation power"

M. Atalla†, Y. Kim†, S. Assali, D. Burt, D. Nam*, O. Moutanabbir*

ACS Photonics 10, 1649-1653 (2023) 

11 | "Tensile strained direct bandgap GeSn microbridges enabled in GeSn-on-insulator substrates with residual tensile strain"

D. Burt†, L. Zhang†, Y. Jung, H. Joo, Y. Kim, M. Chen, B. Son, W. Fan, Z. Ikonic, C. Tan, D. Nam*

Optics Letters 48, 735-738 (2023) 

2022

10 | "Efficient avalanche photodiodes with a WSe2/MoS2 heterostructure via two-photon absorption"

B. Son, Y. Wang, M. Luo, K. Lu, Y. Kim, H. Joo, Y. Yi, C. Wang, Q. Wang, S. Chae*, D. Nam*

Nano Letters 22, 9516-9522 (2022) 

9 | "Direct bandgap GeSn nanowires enabled with ultrahigh tension from harnessing intrinsic compressive strain"

D. Burt†, H. Joo†, Y. Kim†, Y. Jung, M. Chen, M. Luo, D. Kang, S. Assali, L. Zhang, B. Son, W. Fan, O. Moutanabbir, Z. Ikonic, C. Tan, Y. Huang, D. Nam*

Applied Physics Letters 120, 202103 (2022) 

Selected for Editor's Pick

8 | "Optically pumped low-threshold microdisk lasers on a GeSn-on-insulator substrate with reduced defect density"

Y. Jung†, D. Burt†, L. Zhang, Y. Kim, H. Joo, M. Chen, S. Assali, O. Moutanabbir, C. Tan, D. Nam*

Photonics Research 10, 1332-1337 (2022) 

7 | "Triaxially strained suspended graphene for large-area pseudo-magnetic fields"

M. Luo†, H. Sun†, Z. Qi, K. Lu, M. Chen, D. Kang, Y. Kim, D. Burt, X. Yu, C. Wang, Y. Kim, H. Wang, Q. Wang, D. Nam*

Optics Letters 47, 2174-2177 (2022) 

6 | "Enhanced GeSn microdisk lasers directly released on Si"

Y. Kim†, S. Assali†, D. Burt, Y. Jung, H. Joo, M. Chen, Z. Ikonic, O. Moutanabbir*, D. Nam*

Advanced Optical Materials 10, 2101213 (2022) 

2021

5 | "1D photonic crystal direct bandgap GeSn-on-insulator laser"

H. Joo†, Y. Kim†, D. Burt, Y. Jung, L. Zhang, M. Chen, S. Parluhutan, D. Kang, C. Lee, S. Assali, Z. Ikonic, O. Moutanabbir, Y. Cho, C. Tan, D. Nam*

Applied Physics Letters 119, 201101 (2021) 

4 | "Strain-relaxed GeSn-on-insulator (GeSnOI) microdisks"

D. Burt†, H. Joo†, Y. Jung, Y. Kim, M. Chen, Y. Huang, D. Nam*

Optics Express 29, 28959-28967 (2021) 

3 | "Pseudo-magnetic field-induced slow carrier dynamics in periodically strained graphene"

D. Kang†, H. Sun†, M. Luo†, K. Lu, M. Chen, Y. Kim, Y. Jung, X. Gao, S. Parluhutan, J. Ge, S. Koh, D. Giovanni, T. Sum, Q. Wang, H. Li, D. Nam*

Nature Communications 12, 5087 (2021) 

Covered by Optics & Photonics News (OPN), Dong-A Ilbo, etc.

2 | "Biaxially strained germanium crossbeam with high-quality optical cavity for on-chip laser applications"

Y. Jung†, Y. Kim†, D. Burt, H. Joo, D. Kang, M. Luo, M. Chen, L. Zhang, C. Tan, D. Nam*

Optics Express 29, 14174-14181 (2021) 

1 | "Frequency-tunable terahertz graphene laser enabled by pseudomagnetic fields in strain-engineered graphene"

H. Sun, Z. Qi, Y. Kim, M. Luo, B. Yang, D. Nam*

Optics Express 29, 1892-1902 (2021) 

1 | "Optical Device and Method of Forming The Same"

D. Nam, Y. Kim, Y. Jung, D. Burt, H. Joo, W. Fan

US Patent No. 11,962,128, Issued 16-Apr-2024