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Ondrej Krivanek

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Ondrej L Krivanek FRS, photographed outside London in early 2020.

Ondrej L. Krivanek FRS (born Ondřej Ladislav Křivánek; August 1, 1950) is a Czech/British physicist resident in the United States, and a leading developer of electron-optical instrumentation. He won the Kavli Prize for Nanoscience in 2020 for his substantial innovations in atomic resolution electron microscopy.[1]

Life

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He was born in Prague, and got his primary and secondary education there. In 1968 he moved to the UK, where he graduated from Leeds University and obtained his Ph.D. in Physics from Cambridge University (Trinity College), and became a British citizen in 1975. His post-doctoral work at Kyoto University, Bell Laboratories and UC Berkeley established him as a leading high resolution electron microscopist, who obtained some of the first atomic resolution images of grain boundaries in semiconductors and of interfaces in semiconductor devices.[2]

Starting in the late 1970s, he designed a series of electron energy loss (EEL) spectrometers and imaging filters, first as a post-doc at UC Berkeley, then as an assistant professor at Arizona State University and a consultant to Gatan Inc., and later as director of R&D at Gatan.[3] These became highly successful, with over 500 installations world-wide. He also co-authored, with Channing Ahn, the EELS Atlas,[4] now a standard reference for electron energy loss spectroscopy, pioneered the design and use of slow-scan CCD cameras for electron microscopy,[5] and developed efficient microscope aberration diagnosis and tuning algorithms.[6] He also initiated the development and designed the first user interface of DigitalMicrograph, which went on to become the world's leading electron microscopy image acquisition and processing software.

The imaging filters he designed were corrected for second order aberrations and distortions, and he next took up the correction of third order aberrations, a key problem in electron microscopy. Following an unsuccessful application for funding in the US, he applied, successfully, for support to the Royal Society (jointly with L. Michael Brown FRS and Andrew Bleloch). He then took an unpaid leave of absence from Gatan to develop an aberration corrector for a scanning transmission electron microscope (STEM) in Cambridge UK, together with Niklas Dellby and others. In 1997, this led to the first STEM aberration corrector that succeeded in improving the resolution of the electron microscope it was built into.[7] Also in 1997 and with Niklas Dellby, he started Nion Co.,[8] where they produced a new corrector design. In 2000 this corrector became the first commercially delivered electron microscope aberration corrector in the world (to IBM TJ Watson Research Center[9]), and soon after delivery it produced the first directly interpretable sub-Å resolution images obtained by any type of an electron microscope.[10]

Nion correctors delivered to Oak Ridge National Laboratory produced the first directly interpretable sub-Å resolution electron microscope images of a crystal lattice[11] and the first EEL spectra of single atoms in a bulk solid.[12] Nion has since progressed onto designing and manufacturing whole scanning transmission electron microscopes that have produced many further world-leading results,[13] such as atomic-resolution elemental mapping[14] and analytical imaging in which every individual atom is resolved and identified.[15]

In 2013, Nion introduced a new design of a monochromator for STEM that allowed the first demonstration of vibrational/phonon spectroscopy in the electron microscope,[16] and can now reach 3 meV energy resolution at 20 kV. Used in tandem with the new Nion energy loss spectrometer,[17] the monochromator has led to many revolutionary results. These include a 2016 demonstration of damage-free vibrational spectroscopy of different hydrogen environments in a biological material (Guanine),[18] 2019 demonstrations of atomic resolution imaging using the phonon signal[19] and of detecting and mapping an amino acid different in just one 12C atom being substituted by 13C (isotopic shift),[20] and a 2020 detection of the vibrational signal from a single Si atom.[21]

He is currently President of Nion Co. and Affiliate Professor at Arizona State University.

Awards

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References

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  1. ^ Ondřej Křivánek - Hyde Park Civilizace | Česká televize (in Czech), retrieved 14 July 2023
  2. ^ O.L. Krivanek (1978) “High resolution imaging of grain boundaries and interfaces”, Proceedings of Nobel Symposium 47, Chemica Scripta 14, 213.
  3. ^ "Gatan, Inc: About Gatan". www.gatan.com. Archived from the original on 13 September 2007. Retrieved 12 January 2022.
  4. ^ C.C. Ahn and O.L. Krivanek (1983) "EELS Atlas – a reference guide of electron energy loss spectra covering all stable elements" (ASU HREM Facility & Gatan Inc, Warrendale, PA, 1983)
  5. ^ O.L. Krivanek and P.E. Mooney (1993) "Applications of slow scan CCD cameras in transmission electron microscopy", Ultramicroscopy 49, 95
  6. ^ O.L. Krivanek and G.Y. Fan (1994) "Application of slow-scan CCD cameras to on-line microscope control", Scanning Microscopy Supplement 6, 105
  7. ^ O.L. Krivanek, N. Dellby, A.J. Spence, R.A. Camps and L.M. Brown (1997) "Aberration correction in the STEM", IoP Conference Series No 153 (Ed. J M Rodenburg, 1997) p. 35. and O.L. Krivanek, N. Dellby and A.R. Lupini (1999) "Towards sub-Å electron beams", Ultramicroscopy 78, 1–11
  8. ^ Nion Company Electron Microscopy Instrumentation
  9. ^ [1][dead link‍]
  10. ^ P.E. Batson, N. Dellby and O.L. Krivanek (2002) “Sub-Ångstrom resolution using aberration corrected electron optics”, Nature 418, 617.
  11. ^ Nellist, P; Chisholm, F; Dellby, N; Krivanek, O; Murfitt, M; Szilagyi, Z; Lupini, A; Borisevich, A; Sides, W; Pennycook, S (17 September 2004). "Direct sub-angstrom imaging of a crystal lattice". Science. 305 (5691): 1741. doi:10.1126/science.1100965. PMID 15375260. S2CID 8064440. Retrieved 17 March 2022.
  12. ^ Varela, M; Findlay, S; Lupini, A; Christen, H; Borisevich, A; Dellby, N; Krivanek, O; Nellist, P; Oxley, M; Allen, L; Pennycook, S (March 2004). "Spectroscopic Imaging of Single Atoms Within a Bulk Solid". Phys. Rev. Lett. 92 (9): 095502. arXiv:cond-mat/0401156. Bibcode:2004PhRvL..92i5502V. doi:10.1103/PhysRevLett.92.095502. PMID 15089484. S2CID 4792946. Retrieved 16 March 2022.
  13. ^ [2][dead link‍]
  14. ^ D.A. Muller, L. Fitting Kourkoutis, M.F. Murfitt, J.H. Song, H.Y. Hwang, J. Silcox, N. Dellby and O. L. Krivanek. (2008) “Atomic-Scale Chemical Imaging of Composition and Bonding by Aberration-Corrected Microscopy”, Science 319, 1073.
  15. ^ O. L. Krivanek, M.F. Chisholm, V. Nicolosi, T.J. Pennycook, G.J. Corbin, N. Dellby, M.F. Murfitt, C.S. Own, Z.S. Szilagyi, M.P. Oxley, S.T. Pantelides, and S.J. Pennycook (2010) "Atom-by-atom structural and chemical analysis by annular dark field electron microscopy" Nature 464 (2010) 571.
  16. ^ Krivanek, Ondrej L.; Lovejoy, Tracy C.; Dellby, Niklas; Aoki, Toshihiro; Carpenter, R. W.; Rez, Peter; Soignard, Emmanuel; Zhu, Jiangtao; Batson, Philip E.; Lagos, Maureen J.; Egerton, Ray F.; Crozier, Peter A. (2014). "Vibrational spectroscopy in the electron microscope". Nature. 514 (7521): 209–212. Bibcode:2014Natur.514..209K. doi:10.1038/nature13870. PMID 25297434. S2CID 4467249.
  17. ^ T.C. Lovejoy; et al. (2018). "Advances in Ultra-High Energy Resolution STEM-EELS". Microscopy and Microanalysis. 24 (1): 446–447. doi:10.1017/S1431927618002726. S2CID 139712587.
  18. ^ Rez, Peter; Aoki, Toshihiro; March, Katia; Gur, Dvir; Krivanek, Ondrej L.; Dellby, Niklas; Lovejoy, Tracy C.; Wolf, Sharon G.; Cohen, Hagai (2016). "Damage-free vibrational spectroscopy of biological materials in the electron microscope". Nature Communications. 7: 10945. Bibcode:2016NatCo...710945R. doi:10.1038/ncomms10945. PMC 4792949. PMID 26961578.
  19. ^ Hage, F. S.; Kepaptsoglou, D. M.; Ramasse, Q. M.; Allen, L. J. (2019). "Phonon Spectroscopy at Atomic Resolution". Physical Review Letters. 122 (1): 016103. Bibcode:2019PhRvL.122a6103H. doi:10.1103/PhysRevLett.122.016103. PMID 31012678. S2CID 85547446.
  20. ^ Hachtel, Jordan A.; Huang, J.; Popovs, I.; Jansone-Popova, S.; Keum, J. K.; Jakowski, J.; Lovejoy, T. C.; Dellby, N.; Krivanek, O. L.; Idrobo, J. C. (February 2019). "Identification of site-specific isotopic labels by vibrational spectroscopy in the electron microscope". Science. 363 (6426): 525–528. Bibcode:2019Sci...363..525H. doi:10.1126/science.aav5845. PMID 30705191. S2CID 59564555.
  21. ^ Hage, F. S.; Radtke, G.; Kepaptsoglou, D. M.; Lazzeri, M.; Ramasse, Q. M. (2020). "Single-atom vibrational spectroscopy in the scanning transmission electron microscope". Science. 367 (6482): 1124–1127. Bibcode:2020Sci...367.1124H. doi:10.1126/science.aba1136. PMID 32139541. S2CID 212560636.
  22. ^ "Honorary Degrees 2023". University of Leeds. 18 July 2023. Retrieved 31 October 2023.
  23. ^ "Making progress in science is like hiking in mountains, says MU honorary doctor".
  24. ^ "2020 Kavli Prize in Nanoscience". www.kavliprize.org. 12 March 2021. Retrieved 14 December 2021.
  25. ^ "Ultramicroscopy | Ondrej Krivanek: A research life in EELS and aberration corrected STEM | ScienceDirect.com by Elsevier". www.sciencedirect.com. Retrieved 14 December 2021.
  26. ^ "History".
  27. ^ "Peter Duncumb Award for Excellence in Microanalysis — Microanalysis Society".
  28. ^ "Honorary Fellows".
  29. ^ "APS Fellow Archive".
  30. ^ "Fellows Directory | Royal Society".
  31. ^ List of Fellows of the Royal Society
  32. ^ "Microscopy Society of America - Awards & Scholarships: Society Awards". www.microscopy.org. Archived from the original on 19 March 2011.
  33. ^ RD Mag search [dead link‍]
  34. ^ "For the Record – Skiing". The Times. 20 December 1975.
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