Earlier workers have used only light microscopy for hair studies, but advent of SEM has made possible analysis of hairs for ultra-structural details. Mammal hairs have been examined under SEM by other workers (Hausman, 1920; 1924; Short, 1978; Riggott and Wyatt, 1980) abroad. In India, few studies are available on SEM of hairs of mammals. Kopikar and Sabnis (1976, 1977) have done some work on s...

BACKGROUND Trichophyton rubrum (T.rubrum) caused onychomycosis is the most common nail fungal disease. The common diagnostic methods are direct microscopic examination and fungal culture. In this study we used scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to study the subungual ultrastructural changes in T. rubrum induced onychomycosis. METHODS Six outpatients ...

In this study we have compared the results of Scanning Electron Microscopy (SEM) with Light- and Stereomicroscopy in a series of small bowel biopsies in children. In 9 cases displaying features of partial or subtotal atrophy, Light and Dissecting-Microscopy yielded similar results. The distinction between coeliac and non-coeliac chronic diarrhoea was only possible on clinical grounds, and by th...

The cryo scanning electron microscopy (cryo-SEM) as well as high-pressure-freezing (HPF) belongs to cutting edge techniques in electron microscopy of hydrated samples [1]. However, their combination is not always easily applicable. Here, we present a way of combining high-pressure-freezing using EM PACT2 (Leica Microsystems) that fixes hydrated samples on a 1.4 mm sapphire discs and high resolu...

nanocrystals of zno were prepared by microwave irradiation using zn (ii) acetate and triethanol amin (tea) as the starting materials and water as solvent. the nanocrystals of zno with hexagonal (wurtzite) structure were characterized by x-ray powder diffraction (xrd), transmission electron microscopy (tem), scanning electron microscopy (sem), uv-vis absorption and ftir spectroscopy techniques.

The authors present scanning transmission electron microscopy STEM of carbon nanofibers CNFs on a bulk substrate using conventional scanning electron microscopy SEM without specimen thinning. By utilizing the electron beam tilted 85° from the substrate normal, bright-field STEM contrast is obtained for the CNFs on substrate with conventional SEM. Analysis of the observed contrast using Monte Ca...

OBJECTIVES Adhesion of resin composites to dentin is currently believed to result from impregnation of adhesive resin into superficially demineralized dentin. The purpose of this study was to use micro-Raman spectroscopy and scanning electron microscopy (SEM) to investigate the extent of resin penetration into etched dentin with single-step adhesive systems. METHODS Adhesive systems used were...

Scanning electron microscopy (SEM) is used to evaluate potential chromosome preparations and staining methods for application in high-resolution three-dimensional X-ray imaging. Our starting point is optical fluorescence microscopy, the standard method for chromosomes, which only gives structural detail at the 200 nm scale. In principle, with suitable sample preparation protocols, including con...

Progress in rational engineering of Li-ion batteries requires better understanding of the electrochemical processes and accompanying transformations in the electrode materials on multiple length scales. In spite of recent progress in utilizing transmission electron microscopy (TEM) to analyze these materials, in situ scanning electron microscopy (SEM) was mostly overlooked as a powerful tool th...

We report herein an investigation into dynamic magnetic clustering that occurs during immunoassays as biofunctionalized magnetic nanoparticles (BMNs) become associated with biotargets. We measure the dynamic effective relaxation time τeff(t) and use scanning electron microscopy (SEM) and transmission electron microscopy (TEM) to investigate the C-reactive protein (CRP) as it associates with the...