Arjun Yodh

Arjun Yodh
Born
Maryland
Academic background
EducationBSc, 1981, Cornell University
MS, PhD, 1986, Harvard University
ThesisHigh-resolution collision studies of ³P₁-state Zeeman coherences using photon echoes (1986)
Academic work
InstitutionsUniversity of Pennsylvania

Arjun Gaurang Yodh is an American physicist and the James M. Skinner Professor of Science at the University of Pennsylvania (Penn). Since 2022, he has been Chair of the Department of Physics and Astronomy, and from 2009 to 2020, he was the Director of the university's Laboratory for Research on the Structure of Matter (LRSM) and its affiliated National Science Foundation (NSF) supported Materials Research Science and Engineering Center (MRSEC). He currently conducts research in Biophotonics, especially development and clinical application of diffuse optics for noninvasive imaging and monitoring of biological tissues, and in Soft Condensed Matter Physics, particularly experimental measurements of interactions, structure, dynamics, phase transformations, and assembly in colloids, liquid crystals, and complex fluid drops.[1]

Early life and education

Born in Pittsburgh, Pennsylvania and raised in Silver Spring, Maryland, Yodh was inspired by his father's career as a physicist.[2] During his time at Springbrook High School, Yodh was recognized as a finalist in the 1977 Westinghouse Science Talent Search and runner-up for the best scientific paper at the Maryland Junior Science and Humanities Symposium.[3][4] He earned his Bachelor of Science degree in Applied and Engineering Physics from Cornell University in 1981, and he completed his M.S. (1982) and Ph.D. (1986) at Harvard University in the Division of Engineering and Applied Sciences.[5] His Ph.D. was carried out under the mentorship of Thomas W. Mossberg. Following his doctoral studies, Yodh completed a postdoctoral fellowship at AT&T Bell Laboratories, working first with Steven Chu and then with Harry W. K. Tom. His Ph.D. and postdoctoral research were primarily in the fields of atomic physics and nonlinear optics, i.e., AMO physics.[6]

Career

Yodh joined the University of Pennsylvania faculty in 1988 as an assistant professor of physics. His early work at Penn employed laser-based techniques to investigate a diverse range of physical systems.[5] This research explored the nature and nonlinear optical responses of solid-solid interfaces, molecular responses on surfaces to ultrashort light pulses, multiple light scattering in complex fluids, and the structure and dynamics of colloidal suspensions.[7] Yodh was recognized by awards during this time, including the Presidential Young Investigator Award (1990-95) of the National Science Foundation (NSF), the Office of Naval Research (ONR) Young Investigator Award (1991-94), and an Alfred P. Sloan Research Fellowship (1991).[7][8][9][10]

Yodh was promoted to associate professor in 1993, and he was promoted to full professor and appointed William Smith Term Professor in 1997.[11] In 2000, he became the James M. Skinner Professor of Science.[12] In 2009 Yodh was selected to be director of Penn's Laboratory for Research on the Structure of Matter (LRSM)[13] and its NSF supported Materials Research Science and Engineering Center (MRSEC); he served as director until 2020. Since 2022, Yodh has been Chair of the Department of Physics and Astronomy.[14][15][16]

In 2000, Yodh was elected Fellow of the American Physical Society (APS) for his work on diffusing light fields and the structural, dynamical, and spectroscopic properties of highly scattering materials.[17] In years thereafter, for various accomplishments, Yodh was elected Fellow of the Optical Society of America (OSA, now Optica)[18], of the American Association for the Advancement of Science (AAAS)[19], and of the American Institute for Medical and Biological Engineering (AIMBE).[20][21] Additionally, Yodh's research was recognized by the Langmuir Lecturer award (2006) of the American Chemical Society's Division of Colloid and Surface Chemistry[22], the Humboldt Research Award (2016)[23] of the Alexander von Humboldt Foundation in Germany, and the Michael S. Feld Biophotonics Award of Optica (2021).[24] In 2024, he was recognized by the University of Pennsylvania with the Provost's Award for Distinguished PhD Teaching and Mentoring.[19][25][26]

Research contributions

In the field of soft condensed matter physics, Yodh employs optical technologies such as laser tweezers, confocal and video microscopy, and multiple light scattering to study physics in colloids. His colloid publications report measurements of interparticle interactions, investigation of entropic forces, studies of the assembly and melting of ordered, partially ordered, and frustrated materials, studies of particle diffusion, and studies of structure, dynamics, softness, and rearrangements in colloidal glasses composed of swellable microgel particles.[27][28][29][30]

Yodh also investigates other complex fluids such as liquid crystals, carbon nanotube suspensions, and fluid drops. He has, for example, published papers about coffee rings in drying drops[31], shape transitions of drops containing liquid crystals, and solubilization/manipulation of carbon nanotubes in suspension.[32][33][34][35]

In the field of biomedical optics, Yodh has been most active in diffuse optics. In these problems, light travels through biological tissue in a manner like heat diffusion.[36] Yodh's publications helped to introduce and translate diffuse optical measurement technologies into clinical medicine and, for the work in total, he was recognized by the 2021 Michael S. Feld Biophotonics Award of the optical society (Optica).[22] Early on, Yodh and his collaborators published studies of tissue phantoms that identified connections between diffuse optics and traditional optical phenomena such as refraction, diffraction, scattering, fluorescence, and tomographic imaging.[37][38] Working with medical doctors, he helped translate these concepts for clinical breast cancer imaging and monitoring, as well as for therapy monitoring of other cancers. In parallel, Yodh and collaborators showed how to measure blood flow in tissues with diffuse optical correlation techniques[39], and then with clinical collaborators, he used the full palette of diffuse optical technologies to non-invasively probe cerebral blood flow and oxygen metabolism in the human brain during functional activation and in patients with a range of brain injuries.[40]

Selected publications

  • Islam, M. F.; Rojas, E.; Bergey, D. M.; Johnson, A. T.; Yodh, A. G. (2003). "High weight fraction surfactant solubilization of single-wall carbon nanotubes in water". Nano Letters. 3 (2): 269–273. doi:10.1021/nl025924u.
  • Yunker, P. J.; Still, T.; Lohr, M. A.; Yodh, A. G. (2011). "Suppression of the coffee-ring effect by shape-dependent capillary interactions". Nature. 476 (7360): 308–311. doi:10.1038/nature10344.
  • Durduran, T.; Choe, R.; Baker, W. B.; Yodh, A. G. (2010). "Diffuse optics for tissue monitoring and tomography". Reports on Progress in Physics. 73 (7) 076701. doi:10.1088/0034-4885/73/7/076701.
  • Yodh, A. G.; Chance, B. (1995). "Spectroscopy and imaging with diffusing light". Physics Today. 48 (3): 34–40. doi:10.1063/1.881445.
  • Ntziachristos, V.; Yodh, A. G.; Schnall, M.; Chance, B. (2000). "Concurrent MRI and diffuse optical tomography of breast after indocyanine green enhancement". Proceedings of the National Academy of Sciences of the United States of America. 97 (6): 2767–2772. doi:10.1073/pnas.04057059.

Awards and honors

  • 1990–1995: NSF Presidential Young Investigator Award
  • 1991: Alfred P. Sloan Research Fellowship
  • 1991-1994: ONR Young Investigator Award
  • 1997: William Smith Term Professor, University of Pennsylvania
  • 2000: James M. Skinner Professor of Science, University of Pennsylvania
  • 2000: Fellow, American Physical Society (APS)
  • 2000: Fellow, Optical Society of America (OSA, now Optica)
  • 2006: Langmuir Lecturer, American Chemical Society (ACS) Division of Colloid and Surface Chemistry
  • 2016: Humboldt Research Award, Alexander von Humboldt Foundation
  • 2017: Fellow, American Association for the Advancement of Science (AAAS)
  • 2021: Fellow, American Institute for Medical and Biological Engineering (AIMBE)
  • 2021: Michael S. Feld Biophotonics Award, Optica (formerly Optical Society of America)
  • 2024: Provost PhD Mentoring Prize, University of Pennsylvania

References

  1. ^ "05/26/09, Laboratory for Research on the Structure of Matter: Arjun Yodh - Almanac, Vol. 55, No. 34". almanac.upenn.edu. Retrieved 2026-01-26.
  2. ^ Barwick, Steven W.; Goodman, Jordan A.; Meshkov, Sydney (2020-01-01). "Gaurang Bhaskar Yodh". Physics Today. 73 (1): 64–64. doi:10.1063/PT.3.4396. ISSN 0031-9228. Archived from the original on 2025-08-23.
  3. ^ "Elite of High School Science". The Washington Post. 1977-03-06. ISSN 0190-8286. Retrieved 2026-01-26.
  4. ^ Serlstedt Jr., Albert (March 21, 1977). "Student wins state science honor". The Baltimore Sun. Retrieved November 14, 2021 – via newspapers.com.
  5. ^ a b "Arjun G. Yodh". Laser Focus World. March 1, 2008. Retrieved November 14, 2021.
  6. ^ "Arjun Yodh". University of Pennsylvania. Retrieved November 14, 2021.
  7. ^ a b "SAS Endowed Chairs..." University of Pennsylvania Almanac. September 23, 1997. Retrieved November 14, 2021.
  8. ^ "7/15/14, Arjun Yodh Reappointed Director of LRSM - Almanac, Vol. 61, No. 01". almanac.upenn.edu. Retrieved 2026-01-26.
  9. ^ "SAS Chairs". October 24, 2000. Retrieved November 14, 2021.
  10. ^ "2025 Sloan Research Fellows | Department of Physics and Astronomy". live-sas-physics.pantheon.sas.upenn.edu. Retrieved 2026-01-26.
  11. ^ "SEMINAR: Imaging and Spectroscopy of the Body Using Diffusing Light | Biomedical Engineering". bme.engr.uky.edu. Retrieved 2026-01-26.
  12. ^ Engineering, Penn. "Penn's Laboratory for Research on the Structure of Matter Awarded $22.6 Million NSF Grant". Penn Engineering. Retrieved 2026-01-26.
  13. ^ Reese, Jordan (May 13, 2009). "Arjun G. Yodh Named Director of Penn's Laboratory for Research on the Structure of Matter". Penn Today. Retrieved November 14, 2021.
  14. ^ "HONORS & Other Things". University of Pennsylvania Almanac. October 5, 1999. Retrieved November 14, 2021.
  15. ^ "Curriculum Vitae | Arjun G. Yodh at the University of Pennsylvania, Physics & Astronomy". web.sas.upenn.edu. Retrieved 2024-08-27.
  16. ^ Schiff, Nate (February 10, 1999). "U. pioneers cancer-detection technique". The Daily Pennsylvanian. Retrieved November 14, 2021.
  17. ^ "Surfactant Curtails Nanotube Clumping in Water". University of Pennsylvania Almanac. February 11, 2003. Retrieved November 14, 2021.
  18. ^ "05/26/09, Laboratory for Research on the Structure of Matter: Arjun Yodh - Almanac, Vol. 55, No. 34". almanac.upenn.edu. Retrieved 2026-01-26.
  19. ^ a b "Rajeev Alur and Arjun Yodh: AAAS Fellows". University of Pennsylvania. February 21, 2017. Retrieved November 14, 2021.
  20. ^ "Arjun Yodh Arjun G. Yodh, Ph.D. To be Inducted into Medical and Biological Engineering Elite - AIMBE". Retrieved 2026-01-26.
  21. ^ "Reappointed Director of LRSM, Professor Arjun Yodh". University of Pennsylvania. May 6, 2014. Retrieved November 14, 2021.
  22. ^ a b "Arjun Yodh named 2021 Michael S. Feld Biophotonics Award Recipient by The Optical Society". University of Pennsylvania. February 11, 2021. Retrieved November 14, 2021.
  23. ^ "Arjun G. Yodh: Humboldt Research Award". almanac.upenn.edu. Retrieved 2026-01-26.
  24. ^ "Arjun Yodh Receives Michael S. Feld Biophotonics Award". LRSM. Retrieved 2026-01-26.
  25. ^ "Arjun G. Yodh: Humboldt Research Award". University of Pennsylvania. March 15, 2016. Retrieved November 14, 2021.
  26. ^ "Arjun G. Yodh, Ph.D. To be Inducted into Medical and Biological Engineering Elite". American Institute for Medical and Biological Engineering. November 15, 2021. Retrieved November 14, 2021.
  27. ^ Lin, Keng-hui; Crocker, John C.; Prasad, Vikram; Schofield, Andrew; Weitz, D. A.; Lubensky, T. C.; Yodh, A. G. (2000-08-21). "Entropically Driven Colloidal Crystallization on Patterned Surfaces". Physical Review Letters. 85 (8): 1770–1773. doi:10.1103/PhysRevLett.85.1770. ISSN 0031-9007.
  28. ^ Alsayed, A. M.; Islam, M. F.; Zhang, J.; Collings, P. J.; Yodh, A. G. (2005-08-19). "Premelting at Defects Within Bulk Colloidal Crystals". Science. 309 (5738): 1207–1210. doi:10.1126/science.1112399.
  29. ^ Chen, Ke; Ellenbroek, Wouter G.; Zhang, Zexin; Chen, Daniel T. N.; Yunker, Peter J.; Henkes, Silke; Brito, Carolina; Dauchot, Olivier; van Saarloos, Wim; Liu, Andrea J.; Yodh, A. G. (2010-07-09). "Low-Frequency Vibrations of Soft Colloidal Glasses". Physical Review Letters. 105 (2). doi:10.1103/PhysRevLett.105.025501. ISSN 0031-9007.
  30. ^ Chen, Ke; Manning, M. L.; Yunker, Peter J.; Ellenbroek, Wouter G.; Zhang, Zexin; Liu, Andrea J.; Yodh, A. G. (2011-08-31). "Measurement of Correlations between Low-Frequency Vibrational Modes and Particle Rearrangements in Quasi-Two-Dimensional Colloidal Glasses". Physical Review Letters. 107 (10). doi:10.1103/PhysRevLett.107.108301. ISSN 0031-9007.
  31. ^ Yunker, Peter J.; Still, Tim; Lohr, Matthew A.; Yodh, A. G. (2011). "Suppression of the coffee-ring effect by shape-dependent capillary interactions". Nature. 476 (7360): 308–311. doi:10.1038/nature10344. ISSN 1476-4687.
  32. ^ Han, Yilong; Shokef, Yair; Alsayed, Ahmed M.; Yunker, Peter; Lubensky, Tom C.; Yodh, Arjun G. (2008). "Geometric frustration in buckled colloidal monolayers". Nature. 456 (7224): 898–903. doi:10.1038/nature07595. ISSN 1476-4687.
  33. ^ Alsayed, A. M.; Dogic, Z.; Yodh, A. G. (2004-07-29). "Melting of Lamellar Phases in Temperature Sensitive Colloid-Polymer Suspensions". Physical Review Letters. 93 (5). doi:10.1103/PhysRevLett.93.057801. ISSN 0031-9007.
  34. ^ Islam, M. F.; Rojas, E.; Bergey, D. M.; Johnson, A. T.; Yodh, A. G. (2003-02-01). "High Weight Fraction Surfactant Solubilization of Single-Wall Carbon Nanotubes in Water". Nano Letters. 3 (2): 269–273. doi:10.1021/nl025924u. ISSN 1530-6984.
  35. ^ Bryning, M. B.; Islam, M. F.; Kikkawa, J. M.; Yodh, A. G. (2005). "Very Low Conductivity Threshold in Bulk Isotropic Single-Walled Carbon Nanotube–Epoxy Composites". Advanced Materials. 17 (9): 1186–1191. doi:10.1002/adma.200401649. ISSN 1521-4095.
  36. ^ Yodh, Arjun; Chance, Britton (1995-03-01). "Spectroscopy and Imaging with Diffusing Light". Physics Today. 48 (3): 34–40. doi:10.1063/1.881445. ISSN 0031-9228.
  37. ^ O'Leary, M. A.; Boas, D. A.; Chance, B.; Yodh, A. G. (1995-03-01). "Experimental images of heterogeneous turbid media by frequency-domain diffusing-photon tomography". Optics Letters. 20 (5): 426. doi:10.1364/ol.20.000426. ISSN 0146-9592.
  38. ^ "Fluorescence lifetime imaging in turbid media", Fluorescence Lifetime Spectroscopy and Imaging, CRC Press, pp. 300–341, 2014-07-17, ISBN 978-0-429-19375-0, retrieved 2026-01-26{{citation}}: CS1 maint: work parameter with ISBN (link)
  39. ^ Boas, D. A.; Yodh, A. G. (1997-01-01). "Spatially varying dynamical properties of turbid media probed with diffusing temporal light correlation". JOSA A. 14 (1): 192–215. doi:10.1364/JOSAA.14.000192. ISSN 1520-8532.
  40. ^ Jain, Varsha; Buckley, Erin M; Licht, Daniel J; Lynch, Jennifer M; Schwab, Peter J; Naim, Maryam Y; Lavin, Natasha A; Nicolson, Susan C; Montenegro, Lisa M; Yodh, Arjun G; Wehrli, Felix W (2014-03-01). "Cerebral Oxygen Metabolism in Neonates with Congenital Heart Disease Quantified by MRI and Optics". Journal of Cerebral Blood Flow & Metabolism. 34 (3): 380–388. doi:10.1038/jcbfm.2013.214. ISSN 0271-678X. PMC 3948119. PMID 24326385.

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