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Sukwon Choi
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Associate Professor, Mechanical Engineering
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Recent Publications
Thermal Optimization of the Buffer Layer Thickness of GaN HEMTs
Karim, A., Walwil, H., Kang, K., Kim, S., Shoemaker, D. C., Barton, H., Lee, K. K., Tweedie, J. S. & Choi, S., 2026, In: IEEE Transactions on Electron Devices. 73, 1, p. 164-171 8 p.Research output: Contribution to journal › Article › peer-review
High thermal boundary conductance across a GaN/SiC interface characterized via signal-ratio-based dual-frequency time-domain thermoreflectance
Walwil, H., Song, Y., Lee, S. H., Wildeson, I., Zivasatienraj, B., Redwing, J. M. & Choi, S., Feb 21 2026, In: Journal of Applied Physics. 139, 7, 075103.Research output: Contribution to journal › Article › peer-review
Comparison of the MOCVD growth and properties of wafer-scale transition metal dichalcogenide epitaxial monolayers
Choudhury, T. H., Trainor, N., Chen, C., Chubarov, M., Bachu, S., Momeni, K., Lundh, J. S., Hickey, D. R., Zhang, T., Sebastian, A., Zhu, H., Song, B., Chen, Y., Huet, B., Bansal, A., Choi, S., Alem, N., Terrones, M., Jariwala, D. & Das, S. & 1 others, , Oct 1 2025, In: 2D Materials. 12, 4, 045009.Research output: Contribution to journal › Article › peer-review
Phonon transport in Al-rich AlxGa1−xN thin films
Kang, K., Pathak, A., Song, Y., Walwil, H., Mirabito, T., McIlwaine, N. S., Ji, M., Larkin, L. A. S., Saltonstall, C. B., Allerman, A. A., Maria, J. P., Redwing, J. M., Malen, J. A., McGaughey, A. J. H. & Choi, S., Aug 28 2025, In: Journal of Applied Physics. 138, 8, 085101.Research output: Contribution to journal › Article › peer-review
Thermal analysis of base metal electrode multilayer ceramic capacitors
Kang, K., Shoemaker, D. C., Yousefian, P., Cockburn, J., Ellmore, A., Lanagan, M. T., Randall, C. A., Trolier-McKinstry, S. & Choi, S., Oct 2025, In: Journal of the American Ceramic Society. 108, 10, e70020.Research output: Contribution to journal › Article › peer-review
Characterization of hotspot formation in AlGaN/GaN HEMTs by probing Raman scattering through an optically transparent gate
Karim, A., Shoemaker, D. C., Kim, T. K., Kwak, J. S. & Choi, S., Jul 21 2025, In: Journal of Applied Physics. 138, 3, 034507.Research output: Contribution to journal › Article › peer-review
A Comparative Analysis of Electrical and Optical Thermometry Techniques for AlGaN/GaN HEMTs
Kim, S., Shoemaker, D. C., Karim, A., Walwil, H., Dejarld, M. T., Tahhan, M. B., Vaillancourt, J., Chumbes, E. M., Laroche, J. R., Pavlidis, G., Graham, S. & Choi, S., 2025, In: IEEE Transactions on Electron Devices. 72, 1, p. 162-168 7 p.Research output: Contribution to journal › Article › peer-review
Thermal Characterization and Design of AlN/GaN/AlN HEMTs on Foreign Substrates
Kim, S., Kim, E., Walwil, H., Shoemaker, D. C., Encomendero, J., DeJarld, M. T., Tahhan, M. B., Chumbes, E. M., Laroche, J. R., Jena, D., Xing, H. G. & Choi, S., 2025, In: IEEE Electron Device Letters. 46, 5, p. 817-820 4 p.Research output: Contribution to journal › Article › peer-review
Decentralization of the Heating in Multi-Finger α-Ga2O3 Ultra-Wide Bandgap Electronics
Shoemaker, D. C., Song, Y., Karim, A., Ghanizadeh, P., Donmezer, N., Park, J. H., Jeon, D. W., Lee, H. K., Mun, J. K. & Choi, S., 2025, In: IEEE Electron Device Letters. 46, 2, p. 266-269 4 p.Research output: Contribution to journal › Article › peer-review
Enhanced Cooling of Multifinger GaN HEMTs via Topside Diamond Integration
Shoemaker, D. C., Woo, K., Song, Y., Malakoutian, M., Zivasatienraj, B., Srivastava, P., Wildeson, I., Chowdhury, S. & Choi, S., 2025, In: IEEE Electron Device Letters. 46, 9, p. 1597-1600 4 p.Research output: Contribution to journal › Article › peer-review
Enhanced thermal performance of AlN/GaN/AlN XHEMTs on bulk AlN by suppression of phonon-boundary scattering
Song, Y., Kim, E., Encomendero, J., Kim, S., Shoemaker, D. C., Chen, Y. H., Jena, D., Xing, H. G. & Choi, S., Dec 8 2025, In: Applied Physics Letters. 127, 23, 233505.Research output: Contribution to journal › Article › peer-review
Interfacial Thermal Transport in Top-Side Diamond Integrated AlGaN/GaN High Electron Mobility Transistors
Walwil, H., Malakoutian, M., Shoemaker, D. C., Woo, K., Soman, R., Lyu, J., Chumbes, E. M., DeJarld, M., Tahhan, M., Laroche, J., Chowdhury, S. & Choi, S., Oct 29 2025, In: ACS Applied Materials and Interfaces. 17, 43, p. 59519-59530 12 p.Research output: Contribution to journal › Article › peer-review
Thermophysical property measurement of GaN/SiC, GaN/AlN, and AlN/SiC epitaxial wafers using multi-frequency/spot-size time-domain thermoreflectance
Walwil, H., Song, Y., Shoemaker, D. C., Kang, K., Mirabito, T., Redwing, J. M. & Choi, S., Mar 7 2025, In: Journal of Applied Physics. 137, 9, 095105.Research output: Contribution to journal › Article › peer-review
Impact of thermal crosstalk on dependent failure rates of multilayer ceramic capacitors undergoing lifetime testing
Yousefian, P., Shoemaker, D. C., Mena-Garcia, J., Norrell, M., Long, J., Choi, S. & Randall, C. A., Jan 21 2025, In: Journal of Applied Physics. 137, 3, 034104.Research output: Contribution to journal › Article › peer-review
Frequency dependence of wake-up and fatigue characteristics in ferroelectric Al0.93B0.07N thin films
He, F., Zhu, W., Hayden, J., Casamento, J., Tran, Q., Kang, K., Song, Y., Akkopru-Akgun, B., Yang, J. I., Tipsawat, P., Brennecka, G., Choi, S., Jackson, T. N., Maria, J. P. & Trolier-McKinstry, S., Mar 1 2024, In: Acta Materialia. 266, 119678.Research output: Contribution to journal › Article › peer-review