Dr. Tiwei Wei is an Assistant Professor at Purdue University, School of Mechanical Engineering. He was a postdoctoral research scholar in the NanoHeat lab at Stanford University. He received his Ph.D. degree in the 3D system integration department at Interuniversity Microelectronics Centre (imec) and KU Leuven, Belgium in 2020. He joined imec in 2015, starting the Ph.D. research with developing electronic cooling solutions for high-performance 3D systems. Before joining imec, he worked as a researcher staff in Tsinghua University and Hong Kong University of Science and Technology, from 2011 until 2015, where he worked on advanced microelectronic packaging techniques. His current research interest is focusing on Advanced Semiconductor Packaging and Heterogeneous Integration covering processing, materials, and architecture development, Chip-Package Interactions, Reliability, and Efficient thermal management technologies. He serves on the session chair and technical program committee of several electronic packaging conferences, including IEEE ESTC, REPP, 3DIC and EPTC. He is currently the vice-chair of IEEE Electronic Packaging Society (EPS) Silicon Valley Chapter.
Publications
Wei, T., Design Considerations for Chip/Package Level BareDie Impingement Cooling for High PerformanceComputation Systems, Electronics Cooling, 2024.
[PDF] Patel, A.,
Yogi, K.,
Sahu G.,
Wei, T., A Novel Multi-chip Jet Impingement Cooler for Direct-on-chip Cooling of High Performance Interposer Package, 3DIC 2024.
[PDF] Wei, T.W., Lin Zhang, Mehdi Asheghi, Kenneth E. Goodson, Embedded Microchannel Cryogenic Cooling for Silicon Crystal Monochromators using Liquid Nitrogen and Liquid Argon, Itherm 2024. [PDF] Feifan Xie, Shuhang Lyu, Zhi Yang, Wei, T.W., Direct-On-Chip Hotspot Targeted Microjet Cooling for Ultra-fast Inference at Scale Running on Groq Language Processing Unit (LPU™), Itherm 2024. [PDF] Feifan Xie, Shuhang Lyu, Wei, T.W., Thermal Analysis of Dual-sided Cooling for Backside Power Delivery Networks (BSPDN) on 2.5D Glass/Silicon Interposer Package, Itherm 2024. [PDF] Akshat Patel, Gopinath Sahu, Wei, T.W., Heat Transfer Enhancement for Direct-on-Chip Impingement Jet Cooling using Variable Micro Pin Fins and Tapered Impingement Cavity, Itherm 2024. [PDF] Xie, F.F., Chen R.M., and Wei, T.W.*, Thermal Mitigation Strategy for Backside Power Delivery Network, 2024 IEEE 74th Electronic Components and Technology Conference (ECTC), Denver, Colorado, May 28- May 31, 2024, pp. 1485-1492. DOI: 10.1109/ECTC51529.2024.00241 [PDF] Lyu, S.H., Thomas B., and Wei, T.W.*, Thermo-Mechanical Reliability Analysis and Raman Spectroscopy Characterization of Sub-micron Through Silicon Vias (TSVs) for Backside Power Delivery in 3D Interconnects, 2024 IEEE 74th Electronic Components and Technology Conference (ECTC), Denver, Colorado, May 28- May 31, 2024, pp. 834-841. DOI: 10.1109/ECTC51529.2024.00134 [PDF] Wang, K.Y, Lyu, S.H., and Wei, T.W.*, A Novel Copper Microporous-Assisted Bonding Method for Fine-Pitch Cu/Sn Microbump 3D Interconnects, 2024 IEEE 74th Electronic Components and Technology Conference (ECTC), Denver, Colorado, May 28- May 31, 2024, pp. 563-570. IEEE, 2024. DOI: 10.1109/ECTC51529.2024.00095 [PDF] Lyu, S.H., Wu, Q.Y., Goodson, K. E. &
Wei, T.W.*, Thermomechanical Modeling and Stress Analysis of Copper Inverse Opals (CIO) Structure for Capillary-Fed Boiling, IEEE CPMT, 2023. DOI:
10.1109/TCPMT.2024.3391231 Lyu, Shuhang, Qianying Wu, and
Tiwei Wei. "Numerical modelling and analysis of porous surface-enhanced jet cooling using copper inverse opals in single-phase flow." Flow, 2024, E9. DOI:
https://doi.org/10.1017/flo.2024.6 [PDF] Lyu, Shuhang, Qianying Wu, and
Tiwei Wei. "Hotspot-targeted Cooling Scheme with Hybrid Jet Impingement/Thermal Through Silicon Via (TSV)."
2023 22nd IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm). IEEE, 2023. DOI:
10.1109/ITherm55368.2023.10177590 [PDF] Lin, Yujui*, Tiwei Wei*, Wyatt Jason Moy, Hao Chen, Man Prakash Gupta, Michael Degner, Mehdi Asheghi, Alan Mantooth, and Kenneth Goodson. "Multi-level Embedded 3d Manifold Microchannel Heat Sink of Aln Direct Bonded Copper for the High-power Electronic Module." Journal of Electronic Packaging (2023): 1-45.
H Oprins, Tiwei Wei, Vladimir Cherman, E Beyne (2023, May). Liquid jet impingement cooling of high-performance interposer packages: a hybrid CFD–FEM modeling study. In 2023 22nd IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) (pp. 1-10). IEEE.
Lin, Y., Wei, T. W., Asheghi, M., Goodson, K. E.*, The Capillary-driven Two-phase Embedded Microchannel Heatsink for the Efficient Cooling of Power Electronic Modules, Bulletin of the American Physical Society, 2023
Wei, T. W., Lin, Z., Asheghi, M., & Goodson, K. E*., Micro-channel Cooling Technique to Minimize Thermal Deformation of the X-ray and High-power Laser Optics, International Conference on Synchrotron Radiation Instrumentation (SRI) 2022.
Wei, T. W.*, Hazra, S., Asheghi, M., & Goodson, K. E. Numerical Study of Large Footprint (24 X 24mm2) Silicon-Based Embedded Microchannel-3D Manifold Coolers. Journal of Electronic Packaging 2022. DOI:
10.1115/1.4055468 [PDF] Chen H,
Wei, T. W., et al. Feasibility Design of Tight Integration of Low Inductance SiC Power Module with Microchannel Cooler[C]//2022 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2022: 962-965. DOI:
10.1109/APEC43599.2022.9773698 [PDF]Zheng, G., Wu, Q. Y., Wei, T. W.*, “Thermomechanical Modeling and Reliability Analysis of Copper Inverse Opals (CIO) Structure for Capillary-Fed Boiling,” 2022 IEEE Symposium on Reliability for Electronics & Photonics Packaging (REPP), 2022.
[Video] [PDF] Lyu, S. H., Wu, Q. Y., Wei, T. W.*, “Numerical Investigation of Impinging Surface Enhancement with Copper Inverse Opals (CIO) for Jet Cooling,” 2022 IEEE Symposium on Reliability for Electronics & Photonics Packaging (REPP), 2022.
[PDF] [Video] Wei, T. W., Chen H., Lin Y., Hazra S., Chen Y., G. Prakash, N. Li, Y. Lu, H. A. Mantooth, Asheghi, M., Goodson K. E., “Demonstration and Experimental Characterization of DBC Active Laser-cut Microchannel Cooling with 3D Manifold,” 21th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm), 2022.
Wei, T. W., Lin, Z., Asheghi, M., & Goodson, K. E*., “Micro-channel Cooling Technique to Minimize Thermal Deformation of the X-ray and High-power Laser Optics”, International Conference on Synchrotron Radiation Instrumentation (SRI) 2022.
H. Chen,
Wei, T. W., Y. Chen, X. Li, N. Li, Q. Zhu, S. Hazra, Y. Zhao, M. P. Gupta, M. Asheghi, Y. Lu, K. Goodson, H. A. Mantooth, “Feasibility Design of Tight Integration of Low Inductance SiC Power Module with Microchannel Cooler” 2022 IEEE Applied Power Electronics Conference and Exposition.
[PDF]Wei, T. W., Zhang, L., Asheghi, M., Goodson, K. E.*, Embedded Micro-channel Cooling Technique to Minimize Thermal Deformation of X-ray and High-power Laser Optics, Journal of Physics: Conference Series, 2022, 2380 (1), 012071
[PDF] Chen, H., Wei, T. W., Li, X., Chen, Y., Lin, Y., Chinnaiyan, S., Asheghi, M., Mantooth, H. A., Demonstration of Wire bondless Silicon Carbide Power Module with Integrated LTCC Jet Impingement Cooler, 2022 IEEE Energy Conversion Congress and Exposition
[PDF]Hazra, S.*,
Wei, T. W., Lin, Y., Asheghi, M, Goodson, K., Gupta M. P., Degner M., Parametric design analysis of a multi-level 3D manifolded microchannel cooler via reduced order numerical modeling, International Journal of Heat and Mass Transfer, 2022, 197, 123356.
[PDF]Wei, T. W.*, Oprins, H., et al., Heat Transfer and Friction Factor Correlations for Direct on-Chip Microscale jet impingement Cooling with Alternating Feeding and Draining Jets, Int. J. Heat Mass Transf, 2021, Volume 182, 121865. DOI:
10.1016/j.ijheatmasstransfer.2021.121865 [PDF] Wei, T. W.*, Oprins, H., Cherman, V., Beyne, E., & Baelmans, T., Nozzle Scaling Effects for the Thermohydraulic Performance of Microjet Impingement Cooling with Distributed Returns, Applied Thermal Engineering, Volume 180, 5 November 2020, 115767. DOI:
10.1016/j.applthermaleng.2020.115767 [PDF] Wei, T. W.*, All-in-one design integrates microfluidic cooling into electronic chips,
Nature, News and Views, 585, 188-189. (2020) (
Invited) DOI:
10.1038/d41586-020-02503-1 [PDF] Wei, T. W.*, Oprins, H., et al., Experimental and Numerical Study of 3D Printed Direct Jet Impingement Cooling for High Power, Large Die Size Applications, in IEEE Transactions on Components, Packaging and Manufacturing Technology, 2020. DOI:
10.1109/TCPMT.2020.3045113 [PDF] Wei, T. W.*, Oprins, H., Cherman, V., Beyne, E., & Baelmans, M. (2020). Experimental and numerical investigation of direct liquid jet impinging cooling using 3D printed manifolds on lidded and lidless packages for 2.5 D integrated systems. Applied Thermal Engineering, 2020, 164, 114535. DOI:
10.1016/j.applthermaleng.2019.114535 [PDF] Wei, T. W., Jung, K. W., Piazza, A., Hazra, S., Iyengar, M., Malone, C., Asheghi, M., & Goodson, K. E*. Parametric CFD Study of Large Footprint (24 x 24 mm2) Silicon-based Embedded Microchannel-3D Manifold Coolers. InterPACK 2020. (presentation only)
Wei, T. W.*, Oprins, H., Cherman, V., Yang, Z., Rivera, K., Van der Plas, G., Pawlak, B. J., England, L., Beyne, E., & Baelmans, M., “Demonstration of Package Level 3D-printed Direct Jet Impingement Cooling applied to High power, Large Die Applications”, 2020 IEEE 70th Electronic Components and Technology Conference (ECTC), Orlando, FL, USA, 2020, pp. 1422-1429.
[PDF] Wei, T. W.*, Oprins, H., Cherman, V., Beyne, E., & Baelmans, M. (2019). Conjugate Heat Transfer and Fluid Flow Modeling for Liquid Microjet Impingement Cooling with Alternating Feeding and Draining Channels. Fluids, 4(3), 145. DOI:
10.3390/fluids4030145 [PDF] Wei, T. W.*, Oprins, H., Cherman, V., Beyne, E., & Baelmans, M. (2019). Low-cost Energy Efficient On-chip Hotspot Targeted Microjet Cooling for High Power Electronics. IEEE Transactions on Components, Packaging and Manufacturing Technology. vol. 10, no. 4, pp. 577-589, April 2020. DOI:
10.1109/TCPMT.2019.2948522 [PDF] Wei, T. W.*, Oprins, H., Cherman, V., Van der Plas, G., De Wolf, I., Beyne, E., & Baelmans, M. (2019). Experimental characterization and model validation of liquid jet impingement cooling using a high spatial resolution and programmable thermal test chip. Applied thermal engineering, 152, 308-318. DOI:
10.1016/j.applthermaleng.2019.02.075 [PDF] Wei, T. W.*, Oprins, H., Cherman, V., Yang, S., De Wolf, I., Beyne, E., & Baelmans, M. (2019). Experimental Characterization of a Chip-Level 3-D Printed Microjet Liquid Impingement Cooler for High-Performance Systems. IEEE Transactions on Components, Packaging and Manufacturing Technology, 9(9), 1815-1824. DOI:
10.1109/TCPMT.2019.2905610 [PDF] Wei, T. W.*, Oprins, H., Cherman, V., De Wolf, I., Van der Plas, G., Beyne, E., & Baelmans, M. (2019, May). Thermal Analysis of Polymer 3D Printed Jet Impingement Coolers for High Performance 2.5 D Si Interposer Packages. In 2019 18th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITherm) (pp. 1243-1252). IEEE.
[PDF] Wei, T. W.*, Oprins, H., Cherman, V., Qian, J., De Wolf, I., Beyne, E., & Baelmans, M. (2018). High-Efficiency Polymer-Based Direct Multi-Jet Impingement Cooling Solution for High-Power Devices. IEEE Transactions on Power Electronics, 34(7), 6601-6612. DOI:
10.1109/TPEL.2018.2872904 [PDF] Oprins, H.*, Wei, T. W., et al., “A cold shower for chips [J]”, Chip Scale Review, Volume 22, Number 6, November, 2018: Page.26.
Wei, T. W., Qiu X., Lo J C C, Ricky L.*. Wafer level bumping technology for high voltage LED packaging[C]//2015 10th International Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT). IEEE, 2015: 54-57.
[PDF] Wei, T. W., C. Jian*, et al., Optimization and Evaluation of Sputtering Barrier/seed layer In Through Silicon Via for 3-D integration [J], Tsinghua Science and Technology, 2014, 19(2): 150-160. DOI:
10.1109/TST.2014.6787368 [PDF] Wei, T. W., Cai J.*, et al. Performance and reliability study of TGV interposer in 3D integration[C]//2014 IEEE 16th Electronics Packaging Technology Conference (EPTC). IEEE, 2014: pp. 601-605.
[PDF] Wei, T. W., Wang, Q., Liu, Z., Li, Y., Wang, D., Wang, T., & Cai, J*. (2012, December). A 3D integration testing vehicle with TSV interconnects. In 2012 14th International Conference on Electronic Materials and Packaging (EMAP) (pp. 1-5). IEEE.
[PDF]
Wei, T. W., Cai J.*, Wang Q., et al. Copper filling process for small diameter, high aspect ratio through silicon via (TSV)[C]//2012 13th International Conference on Electronic Packaging Technology & High Density Packaging. IEEE, 2012: 483-487. (Outstanding Paper Award)
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