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Donhee Ham (Korean함돈희; Hanja咸燉憙) is the John A. and Elizabeth S. Armstrong Professor of Engineering and Applied Sciences at Harvard University and Fellow of Samsung Electronics.

Biography and Work

Ham is from Busan, South Korea. He received his B.S. in physics from Seoul National University in 1996, graduating atop the College of Natural Sciences with Presidential Prize. After fulfilling his military duty in South Korea in 1997, he went to Caltech, where he earned his M.S. in physics in 1999 and his Ph.D. in electrical engineering in 2002. His PhD thesis on statistical physics of electrical circuits won the Caltech Charles Wilts Prize given to the best Electrical Engineering dissertation.[1] He joined Harvard in 2002 as assistant professor, and became associate professor in 2006, John L. Loeb Associate Professor of the Natural Sciences in 2007, Gordon Mckay Professor of Applied Physics and Electrical Engineering in 2009[2], and the John A. and Elizabeth S. Armstrong Professor of Engineering and Applied Sciences in 2023.

His research work is on CMOS-bio interface for neuroscience and biotechnology, machine intelligence and neuromorphic engineering, scalable nuclear magnetic resonance (NMR), integrated circuits, and beyond-CMOS electronics. Notable work includes: CMOS-neuroelectronic interfaces for massively parallel intracellular recording of mammalian neurons[3][4][5] and their application in machine intelligence;[6][7] CMOS-electrochemistry interfaces for biological cell screening[8] and arrayed pH localization for high-throughput biomolecular synthesis;[9] in-sensor and in-memory computing;[10][11][12][13][14][15][16][excessive citations] NMR scaling[17][18][19] that earned the MIT Technology Review Innovators Under 35 (TR35) recognition;[20] integrated circuit design for analog AI computing, frequency generation and synthesis, microprocessor thermal monitoring, RF transceivers, image sensing, and electrochemical/biological interfaces;[10][21][22][23][24][25][26][27][28][29][30][31][excessive citations] and low-dimensional electronics, such as graphene kinetic inductance measurements and light slowing by collective excitation of 2D electrons.[32][33][34][35] Ham is also known for his teaching.[36]

References

  1. ^ "Caltech Charles Wilts Prize". Archived from the original on January 31, 2023. Retrieved September 10, 2022.
  2. ^ "Wizard at circuits, physics". Harvard Gazette. December 3, 2009.
  3. ^ Abbott, J.; Ye, T.; Krenek, K.; Gertner, R. S.; Ban, S.; Kim, Y.; Qin, L.; Wu, W.; Park, H.; Ham, D. (February 2020). "A nanoelectrode array for obtaining intracellular recordings from thousands of connected neurons". Nature Biomedical Engineering. 4 (2): 232–241. doi:10.1038/s41551-019-0455-7. PMC 7035150. PMID 31548592.
  4. ^ Abbott, J.; Ye, T.; Qin, L.; Jorgolli, M.; Gertner, R. S.; Ham, D.; Park, H. (May 2017). "CMOS nanoelectrode array for all-electrical intracellular electrophysiological imaging". Nature Nanotechnology. 12 (5): 460–466. Bibcode:2017NatNa..12..460A. doi:10.1038/nnano.2017.3. PMID 28192391.
  5. ^ Spira, Micha (February 2020). "Parallel probing of intracellular neuron potentials". Nature Biomedical Engineering. 4 (2): 146–147. doi:10.1038/s41551-019-0467-3. PMID 32051574. S2CID 256718190.
  6. ^ Ham, Donhee; Park, Hongkun; Hwang, Sungwoo; Kim, Kinam (September 2021). "Neuromorphic electronics based on copying and pasting the brain". Nature Electronics. 4 (9): 635–644. doi:10.1038/s41928-021-00646-1. S2CID 240580331.
  7. ^ "Samsung Electronics Puts Forward a Vision To 'Copy and Paste' the Brain on Neuromorphic Chips". news.samsung.com.
  8. ^ "CytoTronics – CMOS-Powered Drug Discovery".
  9. ^ Jung, Han Sae; Jung, Woo-Bin; Wang, Jun; Abbott, Jeffrey; Horgan, Adrian; Fournier, Maxime; Hinton, Henry; Hwang, Young-Ha; Godron, Xavier; Nicol, Robert; Park, Hongkun; Ham, Donhee (July 29, 2022). "CMOS electrochemical pH localizer-imager". Science Advances. 8 (30): eabm6815. Bibcode:2022SciA....8M6815J. doi:10.1126/sciadv.abm6815. PMC 9328676. PMID 35895813.
  10. ^ a b Jung, S.; Lee, H.; Myung, S.; Kim, H.; Yoon, S. K.; Kwon, S. W.; Ju, Y.; Kim, M.; Yi, W.; Han, S.; Kwon, B.; Seo, B.; Lee, K.; Koh, G. H.; Lee, K.; Song, Y.; Choi, C.; Ham, D.; Kim, S. J. (January 2022). "A crossbar array of magnetoresistive memory devices for in-memory computing". Nature. 601 (7892): 211–216. Bibcode:2022Natur.601..211J. doi:10.1038/s41586-021-04196-6. PMID 35022590. S2CID 256820092.
  11. ^ Jang, Houk; Hinton, Henry; Jung, Woo-Bin; Lee, Min-Hyun; Kim, Changhyun; Park, Min; Lee, Seoung-Ki; Park, Seongjun; Ham, Donhee (August 2022). "In-sensor optoelectronic computing using electrostatically doped silicon". Nature Electronics. 5 (8): 519–525. doi:10.1038/s41928-022-00819-6. S2CID 245912889.
  12. ^ Jang, Houk; Liu, Chengye; Hinton, Henry; Lee, Min-Hyun; Kim, Haeryong; Seol, Minsu; Shin, Hyeon-Jin; Park, Seongjun; Ham, Donhee (July 23, 2020). "An atomically thin optoelectronic machine vision processor". Advanced Materials. 32 (36): 2002431. Bibcode:2020AdM....3202431J. doi:10.1002/adma.202002431. PMID 32700395. S2CID 220718153.
  13. ^ Shao, Qiming; Wang, Zhongrui; Yang, J. Joshua (February 2022). "Efficient AI with MRAM". Nature Electronics. 5 (2): 67–68. doi:10.1038/s41928-022-00725-x. S2CID 246961578.
  14. ^ Chai, Yang (August 2022). "Silicon photodiodes that multiply". Nature Electronics. 5 (8): 483–484. doi:10.1038/s41928-022-00822-x. S2CID 251790832.
  15. ^ Jung, Woo-Bin; Jung, Han Sae; Wang, Jun; Hinton, Henry; Fournier, Maxime; Horgan, Adrian; Godron, Xavier; Nicol, Robert; Ham, Donhee (September 9, 2022). "An aqueous analog MAC machine". Advanced Materials. 35 (37): 2205096. doi:10.1002/adma.202205096. PMID 35998945. S2CID 251767476.
  16. ^ "Samsung Demonstrates the World's First MRAM Based In-Memory Computing". news.samsung.com.
  17. ^ Ha, Dongwan; Paulsen, Jeffrey; Sun, Nan; Song, Yi-Qiao; Ham, Donhee (August 2014). "Scalable NMR spectroscopy with semiconductor chips". Proceedings of the National Academy of Sciences. 111 (33): 11955–11960. Bibcode:2014PNAS..11111955H. doi:10.1073/pnas.1402015111. PMC 4143061. PMID 25092330.
  18. ^ Lee, Hakho; Sun, Eric; Ham, Donhee; Weissleder, Ralph (August 2008). "Chip–NMR biosensor for detection and molecular analysis of cells". Nature Medicine. 14 (8): 869–874. doi:10.1038/nm.1711. PMC 2729055. PMID 18607350.
  19. ^ Lei, Ka-Meng; Ha, Dongwan; Song, Yi-Qiao; Westervelt, Robert M.; Martins, Rui; Mak, Pui-In; Ham, Donhee (January 21, 2020). "Portable NMR with parallelism". Analytical Chemistry. 92 (2): 2112–2120. doi:10.1021/acs.analchem.9b04633. PMID 31894967. S2CID 209539567.
  20. ^ "Donhee Ham | Innovators Under 35". www.innovatorsunder35.com. Retrieved September 11, 2022.
  21. ^ Ham, D.; Hajimiri, A. (June 2001). "Concepts and methods in optimization of integrated LC VCOs". IEEE Journal of Solid-State Circuits. 36 (6): 896–909. Bibcode:2001IJSSC..36..896H. doi:10.1109/4.924852.
  22. ^ Donhee Ham; Hajimiri, A. (March 2003). "Virtual damping and Einstein relation in oscillators". IEEE Journal of Solid-State Circuits. 38 (3): 407–418. Bibcode:2003IJSSC..38..407H. doi:10.1109/JSSC.2002.808283.
  23. ^ Ricketts, D.S.; Xiaofeng Li; Ham, D. (January 2006). "Electrical soliton oscillator". IEEE Transactions on Microwave Theory and Techniques. 54 (1): 373–382. Bibcode:2006ITMTT..54..373R. doi:10.1109/TMTT.2005.861652. S2CID 17388043.
  24. ^ Ricketts, D.S.; Xiaofeng Li; Nan Sun; Kyoungho Woo; Ham, D. (August 2007). "On the self-generation of electrical soliton pulses". IEEE Journal of Solid-State Circuits. 42 (8): 1657–1668. Bibcode:2007IJSSC..42.1657R. doi:10.1109/JSSC.2007.900291. S2CID 39579836.
  25. ^ Lee, T. H. (March 2006). "Electrical solitons come of age". Nature. 440 (7080): 36–37. doi:10.1038/440036a. PMID 16511480. S2CID 6572890.
  26. ^ Woo, Kyoungho; Liu, Yong; Nam, Eunsoo; Ham, Donhee (February 2008). "Fast-lock hybrid PLL combining fractional-N and integer-N modes of differing bandwidths". IEEE Journal of Solid-State Circuits. 43 (2): 379–389. Bibcode:2008IJSSC..43..379W. doi:10.1109/JSSC.2007.914281. S2CID 9402385.
  27. ^ Kyoungho Woo; Meninger, S.; Xanthopoulos, T.; Crain, E.; Dongwan Ha; Donhee Ham (February 2009). "Dual-DLL-based CMOS all-digital temperature sensor for microprocessor thermal monitoring". 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers. pp. 68–69, 69a. doi:10.1109/ISSCC.2009.4977311. ISBN 978-1-4244-3458-9. S2CID 3047333.
  28. ^ Sun, Nan; Liu, Yong; Lee, Hakho; Weissleder, Ralph; Ham, Donhee (May 2009). "CMOS RF biosensor utilizing nuclear magnetic resonance". IEEE Journal of Solid-State Circuits. 44 (5): 1629–1643. Bibcode:2009IJSSC..44.1629S. doi:10.1109/JSSC.2009.2017007. S2CID 2952770.
  29. ^ Sun, Nan; Yoon, Tae-Jong; Lee, Hakho; Andress, William; Weissleder, Ralph; Ham, Donhee (January 2011). "Palm NMR and 1-Chip NMR". IEEE Journal of Solid-State Circuits. 46 (1): 342–352. Bibcode:2011IJSSC..46..342S. doi:10.1109/JSSC.2010.2074630. S2CID 10471266.
  30. ^ Hinton, Henry; Jang, Houk; Wu, Wenxuan; Lee, Min-Hyun; Seol, Minsu; Shin, Hyeon-Jin; Park, Seongjun; Ham, Donhee (February 2022). "A 200 x 256 Image Sensor Heterogeneously Integrating a 2D Nanomaterial-Based Photo-FET Array and CMOS Time-to-Digital Converters". 2022 IEEE International Solid- State Circuits Conference (ISSCC). Vol. 65. pp. 1–3. doi:10.1109/ISSCC42614.2022.9731685. ISBN 978-1-6654-2800-2. S2CID 247523831.
  31. ^ Abbott, J.; Ye, T.; Krenek, K.; Qin, L.; Kim, Y.; Wu, W.; Gertner, R. S.; Park, H.; Ham, D. (September 2020). "The design of a CMOS nanoelectrode array with 4096 current-clamp/voltage-clamp amplifiers for intracellular recording/stimulation of mammalian neurons". IEEE Journal of Solid-State Circuits. 55 (9): 2567–2582. Bibcode:2020IJSSC..55.2567A. doi:10.1109/JSSC.2020.3005816. PMC 7983016. PMID 33762776.
  32. ^ Yoon, H.; Forsythe, C.; Wang, L.; Tombros, N.; Watanabe, K.; Taniguchi, T.; Hone, J.; Kim, P.; Ham, D. (August 2014). "Measurement of collective dynamical mass of Dirac fermions in graphene". Nature Nanotechnology. 9 (8): 594–599. arXiv:1401.4240. Bibcode:2014NatNa...9..594Y. doi:10.1038/nnano.2014.112. PMID 24952474. S2CID 10100418.
  33. ^ Yoon, H.; Yeung, K. Y.; Umansky, V.; Ham, D. (August 2012). "A Newtonian approach to extraordinarily strong negative refraction". Nature. 488 (7409): 65–69. Bibcode:2012Natur.488...65Y. doi:10.1038/nature11297. PMID 22859202. S2CID 4380552.
  34. ^ Friedman, R. S.; McAlpine, M. C.; Ricketts, D. S.; Ham, D.; Lieber, C. M. (April 2005). "High-speed integrated nanowire circuits". Nature. 434 (7037): 1085. doi:10.1038/4341085a. PMID 15858562. S2CID 4368700.
  35. ^ Xia, Fengnian (August 2014). "Electrons en masse". Nature Nanotechnology. 9 (8): 575–576. doi:10.1038/nnano.2014.161. PMID 25091446.
  36. ^ "Harvard Thinks Big 3 = 8 Really Big Ideas". Harvard Political Review. February 2012.