Optical microscopy usefulness

Takahashi S, Futamata M and Ko]ima I 1999 Spectroscopy with scanning near-field optical microscopy using photon tunnelling mode J. Microscopy 194 519... 

Near-Field Optical Microscopy Using a Metallic Nano-Tip... 

The nature of the phase formed in the slow coagulation experiment can be deduced on the basis of its thermal transitions, and from its X-ray diffraction pattern. In the DSC trace of the slowly coagulated PBT-MSA-water system shown in Figure 6, three endothermic transitions are observed between 90 °C and 240 °C. Corresponding transitions were observed by optical microscopy using a hot stage. Solid PBT fibers or films do not exhibit thermal transitions below about 650°C (1). 

Optical microscopy using a special low-temperature stage which can be evacuated to operate at pressures representative of freeze drying allows direct observation of materials during freezing and freeze drying, generally under... 

MRM has a long history of rodent brain imaging.The resolution of MRM is 1-2 orders of magnitude poorer than optical microscopy used in histopathology or in vivo optical studies in neurobiology. Nevertheless, with its nondestructive nature and its ability to acquire three-dimensional images of optically opaque samples, MRI has... 

Optical microscopy using polarized light gives a first hint on the crystallinity of the obtained structures. A typical result of optical micrographs obtained without polarization, parallel and perpendicular orientation of the polarizer and analyzer are shown in the Fig. 4. If the relative position of the polarizer and analyser is changed the different regions of the spherulites change their colour, while the... 

SSE at 255°C / mechanical properties TSE at 260-280°C / IV / SEM / DSC / selective solvent extraction / mechanical properties / rheology extruded at 280°C / DMA / DSC / mechanical properties / SEM / FTIR / optical microscopy TSE at 280°C / DMA / DSC / mechanical properties / Kalfoglou et al., 1995 SEM / FTIR / optical microscopy / use of recycle PET / ternary blends with FIDPE also prepared... 

S. Takahashi, M. Futamata, and 1. Koji-ma. Spectroscopy with Scanning Near-Field Optical Microscopy Using Photon Tunnelling Mode, J. Microsc. Oxford 194, 519 (1999)... 

Optical microscopy, using polarized reflected light, has been recognized as a very useful tool and has played a major role in studies of carbonization mechanisms and coke quality properties. Examination of a coke polished surface under a microscope reveals the presence of certain parts without optical activity (isotropic coke) and others with optical activity (anisotropic coke). The anisotropic carbon exhibits yellow, blue, and purple areas of various sizes, <1-200 )tm, and shapes (optical texture) with an interchange of color on rotation of the specimen. 

Optical microscopy using polarized light is a classic technique, and liquid crystal systems can show a variety of often very beautiful textures." The basic experimental procedure utilizes plane-polarized white light, passed through both the sample and a crossed analyser. Thus the parts of the sample with either isotropic optical properties or... 

Microscopy. The most common tool in examining cells and cell structures in tissue samples is the microscope. Optical microscopy uses visible light, which passes thought the object (a tissue section mounted on a glass slide) and the lenses to create a mj ni-fied image. The maximum resolution that can be achieved with light microscopes is 0.2 micrometers (pm). Transmission electron microscopes send a... 

Modified and unmodified PDMS surfaces were imaged en face by optical microscopy using a Zeiss Axiovert 135 microscope equipped with a CCD camera (ORCA-ER, Hamamatsu, Japan). 

Figure 23. Imaging methods from optical microscopy, using as an example a mounting medium with spherical, porous AI2O3 particles to adjust hardness, (a) BF, focused on section plane, (b) BF, focused beneath the section plane, (c) BF, specimen coated with thin gold film, (d) DF, specimen coated with thin gold fito. (e) POL, specimen coated with thin gold film. (0 Die, specimen coated with thin gold film.

Conservation of cell morphology is checked by optical microscopy, using a Leica DMRX microscope with a Nikon DXM1200 digital camera. 

S Takahashi, M Futamata, I Kojima. Spectroscopy with scanning near-held optical microscopy using photon tunnelling mode. J Microsc (Oxford) 194 519-522, 1999. 

The second step in the analysis involves identifying the extent of sample chemical heterogeneity. In order to do so, the unknown samples are imaged with conventional optical microscopy, using all available contrast-enhancement techniques (bright field, dark field, Die, polarized light, etc.). Regions of the sample that exhibit contrast are then sampled with the Raman microprobe in an attempt to correlate microscopic appearance... 

Bachelot, R., Gleyzes, R, and Boccara, A. C. (1997) Reflection-mode scanning near-field optical microscopy using an apertureless metallic tip, AppL Opt, 36, 2160-2170. 

Michaelis, J., Hettich, C., Mlynek, J., and Sandoghdar, V. (2000). Optical microscopy using a single-molecule light source. 

Optical microscopy used to characterize the micromorphologies of the sample surface (e.g. electrode cathode surface after the arc discharge) or... 

---