Energy-Filtering Transmission Electron Microscopy
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Mapping the chemistry in nanostructured materials by energy-filtering transmission electron microscopy (EFTEM).
Energy-filtered transmission electron microscopy (EFTEM) can be used to acquire elemental distribution maps at high lateral resolution within short acquisition times, which makes it quite efficient for a detailed characterization of nanostructures, as illustrated with examples concerning a nanostructured substituted La-based cermet compound and a nanoscale multilayer. In the first example, we s...
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Electron tomography is a three-dimensional technique well suited for characterizing fine-scale microstructural features on the order of 10-100 nm. Typically performed in a transmission electron microscope (TEM), it relies on successive image acquisition at multiple sample tilts. Images may be formed through various techniques including conventional and scanning transmission electron microscopy ...
متن کاملHigh-Resolution Surface Plasmon Imaging of Gold Nanoparticles by Energy Filtered Transmission Electron Microscopy
We demonstrate the imaging capabilities of energy-filtered transmission electron microscopy at high energy resolution in the low energy-loss region, reporting the first direct image of a surface plasmon of an elongated gold nanoparticle at energies around 1 eV. Using complimentary model calculations performed within the boundary element method approach we can assign the observed results to the ...
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Scanning transmission electron microscopy (STEM)-electron energy loss spectroscopy (EELS) has been used for studying local structure of the energy related materials. High resolution (Cs-corrected) STEM is regarded as a promising technique to observe morphological evolution and atomic arrangement inside single particles. Combining with EELS technique, one could probe the local chemical structure...
متن کاملHybridized metal slit eigenmodes as an illustration of Babinet's principle.
By energy-filtering transmission electron microscopy (EFTEM), we observe Fabry-Pérot-like surface plasmon resonances (SPRs) along the length of rectangular single and double slits drilled into free-standing thin silver films. These eigenmodes hybridize in closely situated slits. The nature of their lateral coupling is uncovered from finite-element simulations, which show that the symmetry and e...
متن کاملFirst application of Cc-corrected imaging for high-resolution and energy-filtered TEM.
Contrast-transfer calculations indicate that C(c) correction should be highly beneficial for high-resolution and energy-filtered transmission electron microscopy. A prototype of an electron optical system capable of correcting spherical and chromatic aberration has been used to verify these calculations. A strong improvement in resolution at an acceleration voltage of 80 kV has been measured. O...
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تاریخ انتشار 2007