The revealed gold nanoparticle is 1.1 nm in diameter and contains 68 gold atoms organised in a crystalline fashion at the centre of the particle. The result was supported by small-angle X-ray scattering done in
Electron microscopy is similar in principle to conventional light microscopy, with the exception that the wavelength of the electron beam used for imaging is close to the spacing of atoms in solid matter, about a tenth of a nanometre, in contrast with the wavelength of visible light, which is hundreds of nanometres. A crucial aspect of the new work is the irradiation of the nanoparticle with very few electrons to avoid perturbing the structure of the nanoparticle. The success of this approach opens the way to the determination of many more nanoparticle structures and to both fundamental understanding and practical applications.
The researchers involved in the work are
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OCTOBER 30, 2014
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