نتایج جستجو برای: scanning near field optical microscopy
تعداد نتایج: 1472455 فیلتر نتایج به سال:
INTERACTION OF AN ASYMMETRIC SCANNING NEAR FIELD OPTICAL MICROSCOPY PROBE WITH FLUORESCENT MOLECULES
Mapping electron-beam-injected trapped charge with scattering scanning near-field optical microscopy
The influence of the near-field probe-tip on a model sample consisting one-dimensional apertures is investigated using scanning optical microscopy (SNOM). We use finite-difference time-domain (FDTD) simulations combined with SNOM scans to show that has rather profound effect shape measured transmission intensity profiles. By taking into account perturbations introduced by probe, our newly devel...
We report an experimental analysis of the capabilities of scattering-type scanning near-field optical microscopy for mapping sub-surface features at varying depths. For the first time, we demonstrate experimentally that both the spatial resolution and depth contrast can be improved in subsurface microscopy by demodulating the measured near-field signal at higher harmonics of the probe's tapping...
The sub-wavelength THz emission point on a nonlinear electrooptical crystal, used in broadband THz near-field emission microscopy, is computationally modeled as a radiating aperture of Gaussian intensity profile. This paper comprehensively studies the Gaussian aperture model in the THz near-field regime and validates the findings with dual-axis knife-edge experiments. Based on realistic paramet...
Light microscopy has greatly advanced our understanding of nature. The achievable resolution, however, is limited by optical wavelengths to approximately 200 nm. By using imaging and labeling technologies, resolutions beyond the diffraction limit can be achieved for specialized specimens with techniques such as near-field scanning optical microscopy, stimulated emission depletion microscopy, an...
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