Visualization and measurement of nanometer dimension surface features using dental impression materials and atomic force microscopy

Abstract. We show that atomic force microscopy (AFM) phase images can reveal surface features of soil dust particles, which are not evident using other microscopic methods. The non-contact AFM method is able to resolve topographical structures in the nanometer range as well as to uncover repulsive atomic forces and attractive van der Waals' forces, and thus gives insight to surface properties. Though the method does not allow quantitative assignment in terms of chemical compound description, it clearly shows deposits of distinguishable material on the surface. We apply this technique to dust aerosol particles from the Sahara collected over the Atlantic Ocean and describe micro-features on the surfaces of such particles.

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Surface features on Sahara soil dust particles made visible by atomic force microscope (AFM) phase images

Atmospheric Measurement Techniques ◽

10.5194/amt-1-1-2008 ◽

2008 ◽

Vol 1 (1) ◽

pp. 1-8 ◽

Cited By ~ 7

Author(s):

G. Helas ◽

M. O. Andreae

Keyword(s):

Atomic Force Microscopy ◽

Chemical Compound ◽

Aerosol Particles ◽

Dust Particles ◽

Soil Dust ◽

Surface Features ◽

Force Microscopy ◽

Atomic Force ◽

Phase Images ◽

Micro Features

Abstract. We show that atomic force microscopy (AFM) phase images can reveal surface features of soil dust particles, which are not evident using other microscopic methods. The non-contact AFM method is able to resolve topographical structures in the nanometer range as well as to uncover repulsive atomic forces and attractive van der Waals' forces, and thus gives insight to surface properties. Though the method does not allow quantitative assignment in terms of chemical compound description, it clearly shows deposits of distinguishable material on the surface. We apply this technique to dust aerosol particles from the Sahara collected over the Atlantic Ocean and describe micro-features on the surfaces of such particles.

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Monitoring TiO2 Nanotubes Elaboration Condition, a Way for Obtaining Various Characteristics of Nanostructures

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.415.9 ◽

2009 ◽

Vol 415 ◽

pp. 9-12 ◽

Cited By ~ 20

Author(s):

Diana Portan ◽

D. Ionita ◽

Ioana Demetrescu

Keyword(s):

Atomic Force Microscopy ◽

Tio2 Nanotubes ◽

Surface Characteristics ◽

Electrolyte Composition ◽

Surface Features ◽

Force Microscopy ◽

Atomic Force ◽

Elaboration Condition

In this paper the elaboration and characterization of TiO2 nanotubes as a function of anodizing conditions are studied taking into consideration electrolyte composition and voltage. The obtained results show that the nanotubes dimensions and surface features depend on elaboration conditions. The technique of surface characteristics investigation (2D and 3 D images) was atomic force microscopy which permitted roughness and porosity evaluation.

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ATOMIC FORCE MICROSCOPY OF pH, IONIC STRENGTH AND CADMIUM EFFECTS ON SURFACE FEATURES OF HUMIC ACID

Understanding Humic Substances ◽

10.1016/b978-1-85573-815-7.50014-3 ◽

1999 ◽

pp. 87-99 ◽

Cited By ~ 1

Author(s):

C. Liu ◽

P.M. Huang

Keyword(s):

Atomic Force Microscopy ◽

Humic Acid ◽

Ionic Strength ◽

Surface Features ◽

Force Microscopy ◽

Atomic Force

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Investigation of Coated Coronary Stents

Materials Science Forum ◽

10.4028/www.scientific.net/msf.537-538.307 ◽

2007 ◽

Vol 537-538 ◽

pp. 307-314

Author(s):

Eszter Bognár ◽

György Ring ◽

János Dobránszky

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Atomic Force Microscopy ◽

Coronary Stents ◽

Surface Features ◽

Force Microscopy ◽

Atomic Force ◽

Eds Analysis ◽

Scanning Electron

In this study the main properties of coated coronary stents are shown, such as recoil, foreshortening, surface features and failures and the expansion properties. The types and the effects of active and passive coatings are introduced. The results of our examinations with different coated coronary stents are shown as well. The quality and the changing of the coatings were examined by different methods (stereomicroscopy, atomic force microscopy, scanning electron microscopy and EDS analysis).

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