Optical interference images

Figure 2. Series of optical interference images showing the decay of a 1-D grating on a Ni(lOO) surface at 1219C[11]. The interference fringes represent contour intervals of 0.27pm. The...

Observation. The time of observation is about 2-4 hocus for vital preparation and several days for fixed preparations. All the preparations may be analyzed by 3-channel simultaneous detection to receive common complicated interference image of the object and details of its structure (see experiment 1) by receiving 20 visual slices (optical sections) or the complete volume (the information must be also quantitatively extracted) (see experiment 2) by computer modelling the images as well as mathematical analysis (experiments). 

The schematic processing steps for the two-layer deep-UV PCM system are shown in Table III for near-UV and e-beam exposures, resulting in capped and uncapped profiles respectively. Step 5a is required only for near-UV exposures to average out optical interference effects discussed in Section 6.2.a. Step 6a is used to enhance the AZ to PMMA adhesion and cap retention. Figure 15 shows uncapped 1 - nm lines in a 2 - /im thick PMMA layer. Figure 16 shows the capped image with 0.3 fim AZ on 2 -iLim PMMA. The AZ layer was delineated by a 30 - /iC/cm 25 - keV e-beam in both cases. 

Lee, E. S., Lee, J. Y., and Yoo, Y. S. 2007. Nonlinear optical interference of two successive coherent anti-Stokes Raman scattering signals for biological imaging applications. J. Biomed. Opt. 12 024010. 

The quality of pattern transfer differs greatly among the three modes of printing. As an example, a mask with parallel bundles of slits and spaces between slits with dimensions comparable with the slits can be considered. In this case, optical interference results in distorted images. The theoretical minimum dimension (for both space and slit) that allows resolvable interference peaks for contact or proximity printing is approximated by ... 

A great deal of recent interest is related to the Doppler capabilities of OCT for resolving blood flow [92,93], In principle, there is no reason why OCT or photorefractive imaging cannot perform similarly in this regard. The similar capabilities are a result of the fact that both techniques require an optical interference pattern to be created between two overlapping beams whose path lengths lie within the coherence length of the laser. The only difference between... 

Fig. 32 Optical setups of (a) the surface configuration and (b) the internal configuration. Typical interference images of the triazene polymer film obtained with (c) the surface configuration and (d) the internal configuration. Both images were acquired under the same conditions at 4.0//S after excitation with a fluence of 250 mj cm-2, and fringe movement to the right represents an etching for both configurations. REPRINTED WITH PERMISSION OF [Ref. 125], COPYRIGHT (1997) American Chemical Society...

Fig. 10.14 Ultraflat, homogeneous BCB sample measured in tip-scan mode the same sample spot remains in the laser focus while the tip is scanned [see schematic in inset of (d)]. (a) Reflectivity image, The fringes are due to an optical interference between cantilever and sample surface. The cantilever is not parallel to the sample surface, (b) Zoomed reflectivity image of tip region. Raman spectra were measured along...

During the last few years optical visualization techniques have also been introduced. Among them the total internal reflection fluorescence excitation (TIFR) microscopy [4] and optical interference-enhanced reflection microscopy [5] appear to be the most promising nonintrusive techniques. Their resolution, however, does not even approach the resolution of atomic force microscope and optical techniques may thus serve as an image survey of nanobubbles at 300 nm level (diameter) which is so far their resolution limit. 

Fig. 3 Cross-sectional TEM (left) and SEM (middle) images of a PS-based optical interference filter. (Right) Microcavity...

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