Abstract
Optically imaging atomic nuclei is a long-sought goal for scientific and applied research, but it has never been realized so far. We integrate aberration-corrected scanning transmission electron microscopy (STEM), the bremsstrahlung generation of X-ray photons, and the energy-dispersive X-ray spectroscopic (EDS) receiving and mapping of the photons into a new microscopy method of optical imaging, by which atomic nuclei of different materials are successfully imaged with X-ray photons. Moreover, this imaging method is shown to be workable with different STEM instruments and be capable of distinguishing atomic nuclei of different elements and resolving imaged size differences of atomic nuclei with the order of magnitude as small as 1 pm. Therefore, it is a general method that can image atomic nuclei and their evolutions in materials science, chemistry and physics.
摘要
原子核的光学成像是科学研究和应用研究长期追求的目标, 但迄今为止尚未实现. 本文中, 我们把球差校正的扫描透射电子显微术(STEM)、 X光子的韧致辐射产生以及对这些光子的能量色散X射线光谱(EDS)接收和面扫绘图集成为一种新的光学成像显微方法, 并通过该方法成功用X光子对不同材料的原子核实现成像. 而且, 研究表明该方法能用不同的STEM设备实施, 也能区分不同元素的原子核和分辨小至1皮米量级的原子核成像差异. 因此, 该方法是一种能对原子核及其在材料科学、 化学和物理中的演变进行成像的通用方法.
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References
Gambarotto D, Zwettler FU, Le Guennec M, et al. Imaging cellular ultrastructures using expansion microscopy (U-ExM). Nat Methods, 2019, 16: 71–74
Barwick B, Flannigan DJ, Zewail AH. Photon-induced near-field electron microscopy. Nature, 2009, 462: 902–906
Betzig E, Trautman JK. Near-field optics: microscopy, spectroscopy, and surface modification beyond the diffraction limit. Science, 1992, 257: 189–195
Liu Y, Lu Y, Yang X, et al. Amplified stimulated emission in upconversion nanoparticles for super-resolution nanoscopy. Nature, 2017, 543: 229–233
Huang B, Wang W, Bates M, et al. Three-dimensional superresolution imaging by stochastic optical reconstruction microscopy. Science, 2008, 319: 810–813
Kim S, Yu N, Ma X, et al. High external-efficiency nanofocusing for lens-free near-field optical nanoscopy. Nat Photonics, 2019, 13: 636–643
Loveland WD, Morrissey DJ, Seaborg GT. Modern Nuclear Chemistry, Second Edition. New Jersey: JohnWiley & Sons, Inc., 2015
Stock R. Encyclopedia of Nuclear Physics and its Applications. New York: Wiley-VCH Verlag GmbH & Co. KGaA., 2015
Li J, Yin HM, Li XB, et al. Surface evolution of a Pt-Pd-Au electrocatalyst for stable oxygen reduction. Nat Energy, 2017, 2: 17111
Zhang L, Han L, Liu H, et al. Potential-cycling synthesis of single platinum atoms for efficient hydrogen evolution in neutral media. Angew Chem Int Ed, 2017, 56: 13694–13698
Ma W, Liu X, Li C, et al. Rechargeable Al-CO2 batteries for reversible utilization of CO2. Adv Mater, 2018, 30: 1801152
Liu X, He J, Zhao S, et al. Self-powered H2 production with bi-functional hydrazine as sole consumable. Nat Commun, 2018, 9: 4365
Williams DB, Carter CB. Transmission Electron Microscopy—A Textbook for Materials Science. Berlin: Springer, 2009
Pennycook SJ, Nellist PD (Ed.). Scanning Transmission Electron Microscopy—Imaging and Analysis. Berlin: Springer, 2011
Reese GM, Spence JCH, Yamamoto N. Coherent bremsstrahlung from kilovolt electrons in zone axis orientations. Philos Mag A, 1984, 49: 697–716
Kontar EP, Emslie AG, Massone AM, et al. Electron-electron bremsstrahlung emission and the inference of electron flux spectra in solar flares. Astrophys J, 2007, 670: 857–861
Haug E. Bremsstrahlung and pair production in the field of free electrons. Z Naturforsch, 1975, 30a: 1099–1113
Egerton RF. Electron Energy-Loss Spectroscopy in The Electron Microscope, Third Edition. Berlin: Springer, 2009
Haugstad G. Atomic Force Microscopy: Understanding Basic Modes and Advanced Applications. New Jersey: JohnWiley & Sons, Inc., 2015
Urban KW. Studying atomic structures by aberration-corrected transmission electron microscopy. Science, 2008, 321: 506–510
Zhou J, Lin J, Huang X, et al. A library of atomically thin metal chalcogenides. Nature, 2018, 556: 355–359
Lin J, Zuluaga S, Yu P, et al. Novel Pd2Se3 two-dimensional phase driven by interlayer fusion in layered PdSe2. Phys Rev Lett, 2017, 119: 016101
Yu P, Lin J, Sun L, et al. Metal-semiconductor phase-transition in WSe2(1−x)Te2x monolayer. Adv Mater, 2017, 29: 1603991
Ma C, Cheng Y, Chen K, et al. Mesoscopic framework enables facile ionic transport in solid electrolytes for Li batteries. Adv Energy Mater, 2016, 6: 1600053
Ma C, Rangasamy E, Liang C, et al. Excellent stability of a lithiumion-conducting solid electrolyte upon reversible Li+/H+ exchange in aqueous solutions. Angew Chem Int Ed, 2015, 54: 129–133
Jeong JS, Odlyzko ML, Xu P, et al. Probing core-electron orbitals by scanning transmission electron microscopy and measuring the delocalization of core-level excitations. Phys Rev B, 2016, 93: 165140
Zhao Y, Yan X, Yang KR, et al. End-on bound iridium dinuclear heterogeneous catalysts on WO3 for solar water oxidation. ACS Cent Sci, 2018, 4: 1166–1172
Sun L, Yan X, Zheng J, et al. Layer-dependent chemically induced phase transition of two-dimensional MoS2. Nano Lett, 2018, 18: 3435–3440
Liu P, Guan P, Hirata A, et al. Visualizing under-coordinated surface atoms on 3D nanoporous gold catalysts. Adv Mater, 2016, 28: 1753–1759
Acknowledgements
We thank Prof. Peng Gao from Peking University for providing the SrTiO3 sample, Ketao Zang and Kai Wang from Tianjin University of Technology for assistance in experiments, and Dr. Qiang Xu from Delft University of Technology, Dr. Shu Miao from JEOL, Dr. Guang Yang from FEI and Prof. Li-Min Liu from Beihang University for helpful discussion. The authors also acknowledge the National Supercomputing Center in Shenzhen for providing the computational resources and materials studio (version 7.0, DMol3). This work was financially supported by the National Key R&D Program of China (2017YFA0700104), the National Science Fund for Distinguished Young Scholars (51825102), the National Natural Science Foundation of China (51971157, 51671145 and 51761165012), and Tianjin Science Fund for Distinguished Young Scholars (19JCJQJC61800).
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Author contributions Luo J proposed and designed ANXRI and its schemes of experiments and calculations, and he also supervised the project. Luo J and Xu J co-performed the main experiments and co-analyzed all experimental results, to which Ding Y contributed. He J performed the DFT calculations and analyzed the results, to which Luo J, Ding Y and Xu J contributed.
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Jie Xu received his BSc degree from the School of Materials Science and Engineering at Tianjin University of Technology, China, in 2016. His current interests include low-dimensional materials and their electron microscopy and optical imaging.
Jun Luo received his BSc (2001) and PhD (2006) degrees from Tsinghua University, China. Then, he worked as a postdoc at Warwick University and a research fellow at Oxford University, UK. In 2011, he joined Tsinghua University as an associate professor. In 2015, he moved to Tianjin University of Technology and is a full professor in the Center for Electron Microscopy. His research interests focus on low-dimensional materials and their electron microscopy and optical imaging.
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Xu, J., He, J., Ding, Y. et al. X-ray imaging of atomic nuclei. Sci. China Mater. 63, 1788–1796 (2020). https://doi.org/10.1007/s40843-020-1320-1
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DOI: https://doi.org/10.1007/s40843-020-1320-1