SPECIAL TOPIC — Stephen J. Pennycook: A research life in atomic-resolution STEM and EELS |
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Making the link between ADF and 4D STEM: Resolution, transfer and coherence |
Peter D. Nellist1,† and Timothy J. Pennycook2 |
1 Department of Materials, University of Oxford, Oxford, UK; 2 EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium |
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Abstract Steve Pennycook is a pioneer in the application of high-resolution scanning transmission electron microscopy (STEM) and in particular the use of annular dark-field (ADF) imaging. Here we show how a general framework for 4D STEM allows clear links to be made between ADF imaging and the emerging methods for reconstructing images from 4D STEM data sets. We show that both ADF imaging and ptychographical reconstruction can be thought of in terms of integrating over the overlap regions of diffracted discs in the detector plane. This approach allows the similarities in parts of their transfer functions to be understood, though we note that the transfer functions for ptychographic imaging cannot be used as a measure of information transfer. We also show that conditions of partial spatial and temporal coherence affect ADF imaging and ptychography similarly, showing that achromatic interference can always contribute to the image in both cases, leading to a robustness to partial temporal coherence that has enabled high-resolution imaging.
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Received: 03 September 2024
Revised: 05 October 2024
Accepted manuscript online: 10 October 2024
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PACS:
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68.37.Ma
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(Scanning transmission electron microscopy (STEM))
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42.30.Va
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(Image forming and processing)
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42.30.Rx
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(Phase retrieval)
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87.64.Ee
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(Electron microscopy)
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Fund: We acknowledge funding from the European Research Council (ERC) under the European Union’s Horizon 2020 Research and Innovation Programme via Grant Agreement No. 802123-HDEM (TJP) and from the UK Engineering and Physical Sciences Research Council (EPSRC) via grant EP/M010708/1 (PDN). |
Corresponding Authors:
Peter D. Nellist
E-mail: peter.nellist@materials.ox.ac.uk
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Cite this article:
Peter D. Nellist and Timothy J. Pennycook Making the link between ADF and 4D STEM: Resolution, transfer and coherence 2024 Chin. Phys. B 33 116803
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[1] Howie A 1979 Journal of Microscopy 117 11 [2] McGibbon A J, Pennycook S J and Angelo J E 1995 Science 269 519 [3] Nellist P D and Pennycook S J 1996 Science 274 413 [4] Müller K, Krause F F, Béché A, Schowalter M, Galioit V, Löffler S, Verbeeck J, Zweck J, Schattschneider P and Rosenauer A 2014 Nat. Commun. 5 5653 [5] Lazić I, Bosch E G T and Lazar S 2016 Ultramicroscopy 160 265 [6] Krivanek O L, Dellby N and Lupini A R 1999 Ultramicroscopy 78 1 [7] Rodenburg J M and Bates R H T 1992 Phil. Trans. Roy. Soc. Lond. Ser. A: Phys. Eng. Sci. 339 521 [8] Hoppe W 1969 Acta Crystallographica Section A: Crystal Physics, Diffraction, Theoretical and General Crystallography 25 495 [9] Hawkes P W 1982 Ultramicroscopy 9 27 [10] Nellist P D and Pennycook S J 2000 Advances in Imaging and Electron Physics 113 147 [11] Loane R F, Xu P and Silcox J 1992 Ultramicroscopy 40 121 [12] Pennycook S J and Jesson D E 1990 Physical Review Letters 64 938 [13] Nellist P D and Pennycook S J 1999 Ultramicroscopy 78 111 [14] Song W, Perez-Osorio M A, Marie J J, Liberti E, Luo X, O’Leary C, House R A, Bruce P G and Nellist P D 2022 Joule 6 1049 [15] Maiden A M and Rodenburg J M 2009 Ultramicroscopy 109 1256 [16] Maiden A M, Humphry M J and Rodenburg J M 2012 J. Opt. Soc. Am. A 29 1606 [17] Müller-Caspary K, Krause F F, Grieb T, Löffler S, Schowalter M, Beché A, Galioit V, Marquardt D, Zweck J, Schattschneider P, Verbeeck J and Rosenauer A 2017 Ultramicroscopy 178 62 [18] Black G and Linfoot E H 1957 Math. Phys. Eng. Sci. 239 522 [19] Nellist P D and Pennycook S J 1998 Journal of Microscopy 190 159 [20] McGibbon A J, Pennycook S J and Jesson D E 1999 Journal of Microscopy 195 44 [21] Pennycook T J, Lupini A R, Yang H, Murfitt M F, Jones L and Nellist P D 2015 Ultramicroscopy 151 160 [22] Yang H, Rutte R N, Jones L, Simson M, Sagawa R, Ryll H, Huth M, Pennycook T J, Green M L H, Soltau H, Kondo Y, Davis B G and Nellist P D 2016 Nat. Commun. 7 12532 [23] Seki T, Ikuhara Y and Shibata N 2018 Ultramicroscopy 193 118 [24] Dwyer C and Paganin D M 2024 Phys. Rev. B 110 024110 [25] Chen Z, Jiang Y, Shao Y T, Holtz M E, Odstrčil M, Guizar-Sicairos M, Hanke I, Ganschow S, Schlom D G and Muller D A 2021 Science 372 826 [26] Nellist P D, McCallum B C and Rodenburg J M 1995 Nature 374 630 [27] Nellist P D and Pennycook S J 1998 Phys. Rev. Lett. 81 4156 [28] Nellist P D and Rodenburg J M 1994 Ultramicroscopy 54 61 [29] Pennycook T J, Martinez G T, Nellist P D and Meyer J C 2019 Ultramicroscopy 196 131 |
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