نتایج جستجو برای: electron energy loss spectroscopy
تعداد نتایج: 1449851 فیلتر نتایج به سال:
We report on a combined far- and near-field study of surface plasmon polaritons freestanding perforated gold films. The samples are fabricated by focused ion beam milling {a periodic hole array into} carbon membrane followed thermal evaporation plasma ashing the film. Optical transmission spectra show series characteristic features, which can be attributed to excitation modes via nanohole array...
Archaeological excavations at a U-shaped pyramid in the northern Lake Titicaca Basin of Peru have documented a continuous 5-m-deep stratigraphic sequence of metalworking remains. The sequence begins in the first millennium AD and ends in the Spanish Colonial period ca. AD 1600. The earliest dates associated with silver production are 1960 + or - 40 BP (2-sigma cal. 40 BC to AD 120) and 1870 + o...
Electron energy-loss spectroscopy can be used for detailed spatial and spectral characterization of optical excitations in metal nanoparticles. In previous electron energy-loss experiments on silver nanoparticles with radii smaller than 20 nm, only the dipolar surface plasmon resonance was assumed to play a role. Here, applying electron energy-loss spectroscopy to individual silver nanoparticle...
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