Featured
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Atomic imaging of zeolite-confined single molecules by electron microscopy
Using integrated differential phase contrast scanning transmission electron microscopy, the atomic imaging of single pyridine and thiophene molecules identifies host–guest interactions in zeolite ZSM-5 and their adsorption and desorption behaviours can be studied.
- Boyuan Shen
- , Huiqiu Wang
- & Fei Wei
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Article
| Open AccessNanoscale imaging of phonon dynamics by electron microscopy
A method for mapping phonon momenta reveals non-equilibrium phonon dynamics at nanoscale interfaces enabling study of actual nanodevices and aiding understanding of heat dissipation near nanoscale hotspots.
- Chaitanya A. Gadre
- , Xingxu Yan
- & Xiaoqing Pan
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Metastable hexagonal close-packed palladium hydride in liquid cell TEM
A metastable palladium hydride is synthesized where the unique environment in the liquid cell, namely the limited quantity of Pd precursors and the continuous supply of H, resulted in the formation of the hcp phase.
- Jaeyoung Hong
- , Jee-Hwan Bae
- & Dong Won Chun
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Real-space visualization of intrinsic magnetic fields of an antiferromagnet
Real-space visualization of the magnetic fields in antiferromagnetic haematite is achieved using atomic-resolution differential phase contrast scanning transmission electron microscopy in a magnetic-field-free environment.
- Yuji Kohno
- , Takehito Seki
- & Naoya Shibata
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Article
| Open AccessEmergent interface vibrational structure of oxide superlattices
The vibrational states emerging at the interface in oxide superlattices are characterized theoretically and at atomic resolution, showing the impact of material length scales on structure and vibrational response.
- Eric R. Hoglund
- , De-Liang Bao
- & James M. Howe
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Article |
Measuring phonon dispersion at an interface
Four-dimensional electron energy-loss spectroscopy measurements of the vibrational spectra and the phonon dispersion at a heterointerface show localized modes that are predicted to affect the thermal conductance and electron mobility.
- Ruishi Qi
- , Ruochen Shi
- & Peng Gao
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A single-molecule van der Waals compass
The orientation of a rotating para-xylene molecule in the nanochannel of a zeolite framework can be visualised by electron microscopy to determine the host–guest van der Waals interaction inside the channel.
- Boyuan Shen
- , Xiao Chen
- & Fei Wei
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Article |
Determining the three-dimensional atomic structure of an amorphous solid
A method that achieves atomic-resolution tomographic imaging of an amorphous solid enables detailed quantitative characterization of the short- and medium-range order of the three-dimensional atomic arrangement.
- Yao Yang
- , Jihan Zhou
- & Jianwei Miao
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Article |
Single-defect phonons imaged by electron microscopy
State-of-the-art electron energy-loss spectroscopy in a transmission electron microscope maps the detailed phonon spectra of single defects in silicon carbide
- Xingxu Yan
- , Chengyan Liu
- & Xiaoqing Pan
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Article |
Controlling free electrons with optical whispering-gallery modes
The coupling between light and relativistic free electrons is enhanced through phase matching of electrons with optical whispering-gallery modes in dielectric microspheres and through extended modal lifetimes.
- Ofer Kfir
- , Hugo Lourenço-Martins
- & Claus Ropers
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Article |
Coherent interaction between free electrons and a photonic cavity
The strong interaction of coherent free electrons with a photonic-crystal cavity enables the measurement of the lifetimes of the cavity modes and provides a technique for multidimensional near-field imaging and spectroscopy.
- Kangpeng Wang
- , Raphael Dahan
- & Ido Kaminer
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Article |
Short-range order and its impact on the CrCoNi medium-entropy alloy
Metal alloys consisting of three or more major elemental components show enhanced mechanical properties, which are now shown to be correlated with short-range order observed with electron microscopy.
- Ruopeng Zhang
- , Shiteng Zhao
- & Andrew M. Minor
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Engineering covalently bonded 2D layered materials by self-intercalation
The intercalation of native atoms into bilayer transition metal dichalcogenides during growth generates ultrathin, covalently bonded materials into which ferromagnetic ordering can be introduced.
- Xiaoxu Zhao
- , Peng Song
- & Kian Ping Loh
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Article |
Design and synthesis of multigrain nanocrystals via geometric misfit strain
Heteroepitaxy is used to precisely control the growth of Mn3O4 shells on the faces of a Co3O4 nanocube crystal, producing uniform grain boundary defects and highly ordered multigrain nanostructures.
- Myoung Hwan Oh
- , Min Gee Cho
- & Taeghwan Hyeon
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Article |
Real-space charge-density imaging with sub-ångström resolution by four-dimensional electron microscopy
A real-space imaging technique that combines scanning transmission electron microscopy with an angle-resolved pixellated fast-electron detector is used to image the charge distribution in SrTiO3, BiFeO3 and the junction between them.
- Wenpei Gao
- , Christopher Addiego
- & Xiaoqing Pan
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Letter |
Position and momentum mapping of vibrations in graphene nanostructures
Investigation of a free-standing graphene monolayer using a technique based on transmission electron microscopy allows identification of atomic vibrations characteristic of the bulk or the edge of the sample.
- Ryosuke Senga
- , Kazu Suenaga
- & Thomas Pichler
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Article |
Electron ptychography of 2D materials to deep sub-ångström resolution
Combining an electron microscope pixel-array detector that collects the entire distribution of scattered electrons with full-field ptychography greatly improves image resolution and contrast compared to traditional techniques, even at low beam energies.
- Yi Jiang
- , Zhen Chen
- & David A. Muller
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Letter |
Mapping vibrational surface and bulk modes in a single nanocube
Spatial mapping of optical and acoustic, bulk and surface vibrational modes in magnesium oxide nanocubes is demonstrated using a single electron probe.
- Maureen J. Lagos
- , Andreas Trügler
- & Philip E. Batson
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Letter |
Quantum coherent optical phase modulation in an ultrafast transmission electron microscope
The coherent manipulation of electron quantum states using light, commonly employed in atoms and molecules, is extended to the case of free electron beams using ultrafast transmission electron microscopy; this approach may enable a range of applications in ultrafast electron imaging and spectroscopy down to attosecond precision.
- Armin Feist
- , Katharina E. Echternkamp
- & Claus Ropers
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Letter |
Vibrational spectroscopy in the electron microscope
Recent advances in electron microscopy are shown to allow vibrational spectroscopy at high spatial resolution in a scanning transmission electron microscope, and also to enable the direct detection of hydrogen.
- Ondrej L. Krivanek
- , Tracy C. Lovejoy
- & Peter A. Crozier
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Letter |
Bonding and structure of a reconstructed (001) surface of SrTiO3 from TEM
A simple and accessible method of probing the nature of bonding on the very surface of a material is reported, using transmission electron microscopy: the technologically important compound strontium titanate is examined as an example.
- Guo-zhen Zhu
- , Guillaume Radtke
- & Gianluigi A. Botton
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Letter |
Electron tomography at 2.4-ångström resolution
An electron tomography method is demonstrated that can determine the three-dimensional structure of a gold nanoparticle at 2.4 Å resolution, including the locations of some of the individual atoms within the sample.
- M. C. Scott
- , Chien-Chun Chen
- & Jianwei Miao
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Research Highlights |
3D ripples in a 2D layer
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Letter |
Atom-by-atom structural and chemical analysis by annular dark-field electron microscopy
An imaging technique that could identify all the individual atoms, including defects, in a material would be a useful tool. Here an electron-microscopy approach to the problem, based on annular dark-field imaging, is described. A monolayer of boron nitride was studied, and three types of atomic substitution were identified. Careful analysis of the data enabled the construction of a detailed map of the atomic structure.
- Ondrej L. Krivanek
- , Matthew F. Chisholm
- & Stephen J. Pennycook
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News |
It's a wrap for bacteria
Atomically thin carbon sheets offer bacteria a protective shell in electron microscopes.
- Geoff Brumfiel