near-field surface scanning
Apertureless scanning near field optical microscope with sub-10nm resolution
... local field enhancement, but a 10– 20 nm thick gold or silver coating generally allows us to generate recordable near field optical ...optical field is centered at the tip apex and should ...
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Method of increasing spatial resolution of the scanning near field microwave microscopy
... it. Surface currents within the shielding also induce a secondary field and change the input ...particular field distribution, the external field is commonly assumed to be homogeneous, thus ...
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An investigation of phase mask diffraction patterns and fibre Bragg gratings with scanning near field optical microscopy
... difficult. Scanning in columns rather than rows could have solved the problem, except that thermal drift in the z-direction over the time taken to acquire a two- dimensional scan may have endangered the ...to ...
175
The application of scanning near field optical imaging to the study of human sperm morphology
... Recently, scanning near-field optical microscopy (SNOM), which belongs to the wide family of nanoscopic techniques, has opened up new routes for the investigation of biological ...
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Apertureless scanning near-field optical microscopy: a comparison between homodyne and heterodyne approaches
... the field scattered by the tip and the background scattered ...the near-field intensity or the complex field amplitude derived from the interfero- metric effects, but usually there is a subtle ...
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Measurement of the local optical phase and amplitude in photonic devices using scanning near field microscopy
... The most exploited method of height regulation used in SNOM is the shear force method. Of all the methods it is the least stringent on the properties of the sample. The method was first proposed by Betzig et al. [23], ...
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Near-Field-Far-Field Transformation Technique with Helicoidal Scanning for Elongated Antennas
... An innovative NF-FF transformation with helicoidal scanning has been developed in this paper by using an ellipsoidal modelling of the source, instead of the previously adopted spherical one. Such a modelling, ...
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Optical impedance matching studied with Scanning Near Field Optical Microscopy
... The m etal of choice to coat the fibres is alum inium due to its small skin depth for optical wavelengths (6 nm). The coating is applied to form a well defined ap ertu re at the end of the fiber tip and to minimise the ...
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Far Field Pattern Reconstruction from Positioning Errors Affected Near Field Data Acquired via Helicoidal Scanning
... mulas are employed to retrieve the NF data required by the corresponding classical NF-FF transformation from the acquired nonredundant ones. In this context, the for- mulas available for the direct reconstruction from ...
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Exploring surface wave interaction with angled defects in the near and far field
... characterising surface cracks, particularly by analysing the reflection or transmission of Rayleigh waves, which have both in-plane (IP) and out-of- plane (OP) components ...the surface has shown that the ...
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Polarization Properties in Apertureless Type Scanning Near Field Optical Microscopy
... Although polarization images were successfully mea- sured in Fig. 5, we have to mention that the measured sig- nals consist of two or more polarized light. Figure 6 shows the intensity and the phase measured by the ...
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Near field enhancements from angled surface defects : a comparison of scanning laser source and scanning laser detection techniques
... the near field enhancement behaviour was ...the surface waves in a thermoelastic manner a Nd:YAG laser with 10 ns rise time was ...generated surface waves ...out-of-plane surface ...
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Intragrain Defect Characterization Of Solar Grade Silicon Using Near-Field Scanning Optical Microscopy
... Near-field scanning optical microscopy (NSOM) is a submicron resolution characterization technique that provides both qualitative and quantitative information about the carrier lifetime and ...
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Imaging of InGaN inhomogeneities using visible apertureless. near-field scanning optical microscope
... for near-field measurements was presented ...the near-field signal could be due to the surface reflections of the incident light interfering with each other and with the ...
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Differential Near-Field Scanning Optical Microscopy
... principles of DNSOM. A square DNSOM aperture of 2 µm × 2 µm was assumed and the simulation scanned this aperture exactly over the sample surface. (a) The original image (a microscope image of a tissue sample with ...
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A study on the near field interactions of ultrasonic surface waves with surface breaking defects
... laser scanning sys- tem that can be used to identify and characterise surface-breaking cracks, with a focus towards partially-closed defects, in a variety of materials, through the use of ultrasonic ...
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Noise Removal Technique in Near-Field Millimeter-Wave Cylindrical Scanning Imaging System
... in near-field imaging is in milliwatt level, which is 1/1000 of the transmission power of an ordinary mobile phone, relieving the worry about adverse effect on the human ...the near-filed millimeter-wave ...
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Scanning near-field optical microscopy with white-light illumination: nanoscale imaging and spectroscopy of resonant systems.
... the near-field intensity distribution on the metal film surface outside the crystal for varying wavelengths of the incident light is shown for selected wavelengths in ...the field intensity ...
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Measurement of electric field intensities using scanning near field microwave microscopy
... external field is commonly assumed to be homogeneous, thus resulting in a single sensitivity coef- ficient, which is the ratio between the signal level induced in the antenna and the field ...as ...
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Study of shear force as a distance regulation mechanism for scanning near field optical microscopy
... for scanning near-field optical microscopy ~ SNOM ! are ...of surface features to tip size that gives rise to malfunctions of the shear-force distance regulation ...a surface with the ...
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