FORMING THE IMAGE OF THE SURFACE OF MEMBRANE FILTERS IN THE ELECTRON MICROSCOPE: A CONTRIBUTION

Abstract

Membrane filters are partially permeable layers made of cellulose esters which are employed to separate coarsely dispersed and colloidal particle sizes from substances. The electron microscope is necessary in many cases in order to make visible the particles separated by the filter. Since the membrane filter by reason of its film thickness ranging from 50 to 200 microns is impermeable to electrons, preparation problems result, and it is to the solution of these that the work concerns.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1967
Accession Number
AD0840890

Entities

People

  • H. J. Preussen

Organizations

  • United States Army Biological Warfare Laboratories

Tags

DTIC Thesaurus Topics

  • Biodegradable Plastics
  • Boundary Layer
  • Cellulose Esters
  • Electron Microscopes
  • Electrons
  • Filters
  • Filtration
  • Fluid Filters
  • Fluids
  • Government (Foreign)
  • Layers
  • Membranes
  • Microscopes
  • Particle Size
  • Particles
  • United States

Fields of Study

  • Chemistry

Readers

  • Aerosol Science/Aerosol Physics
  • Thin Film Deposition Science.
  • Underwater engineering and Marine Technology.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene