eTraining Introduction

Specimen Preparation

Leica Ultracut UCT

Histology

JEOL JSM-6400 SEM

Hitachi S-4700 FE-SEM

Hitachi FB-2000A FIB

Microanalysis

Veeco Dim 3000 AFM

Fluorescence Microscopes

Support

Powders

Jet Spraying

Jet spraying is another method that can be used. The jet spraying device is comprised of a hollow Plexiglass tube with a perpendicular hole drilled into its side. The tube bore is 15 mm and the drilled hole is 10 mm.

  1. The powder is introduced into the air stream through the side hole.
  2. Particles that are entrained in a stream of compressed air are sprayed onto the carbon tape-covered aluminum mount.
  3. The air driven particles spread into a pattern after leaving the tube.

An adequate distribution of particles is routinely achieved when the specimen mount is placed at a distance of 10 cm from the tube end. This is a good technique for particle counting in image analysis, as few particles are found that touch each other. The technique could, however, result in preferential orientation of the particles and/or may lead to a misrepresentation of the particle distribution. That is to say, very fine particles may not be represented on the final mount in the same proportion to the initial size distribution.

Jet Spraying Jet Spraying Jet Spraying

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