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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
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Atomic Absorption Spectroscopy: Atomization Methods01:25

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Atomic Fluorescence Spectroscopy01:29

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Atomic fluorescence spectroscopy (AFS) is an analytical technique that involves the electronic transitions of atoms in a flame, furnace, or plasma being excited by electromagnetic (EM) radiation. When these atoms absorb energy, they become excited and subsequently release energy as they return to their original state. This emitted light, or "fluorescence," is observed at a right angle to the incident beam. Both absorption and emission processes transpire at distinct wavelengths, which...
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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction.
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Interactions at Aqueous Mineral Interfaces: Insights from Nonlinear Optical Spectroscopy and Atomic Force Microscopy.

Tobias Dickbreder1, Ellen H G Backus1

  • 1Faculty of Chemistry, Institute of Physical Chemistry, University of Vienna, Vienna, Austria; email: tobias.dickbreder@univie.ac.at, ellen.backus@univie.ac.at.

Annual Review of Physical Chemistry
|January 29, 2026
PubMed
Summary

Understanding mineral-water interfaces is crucial for technological and environmental processes. Combining nonlinear optical spectroscopy and atomic force microscopy (AFM) offers new insights into charged and neutral mineral-water interfaces.

Keywords:
atomic force microscopymineral-water interfacesnonlinear optical spectroscopysecond harmonic generationsum frequency generationsurface charge

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Area of Science:

  • Geochemistry
  • Surface Science
  • Physical Chemistry

Background:

  • Technological and environmental processes often occur at mineral-water interfaces.
  • Surface charge on minerals influences interfacial water structure and ion interactions.
  • Understanding these interfaces is essential for various scientific and industrial applications.

Purpose of the Study:

  • To review the combined use of nonlinear optical spectroscopy and atomic force microscopy (AFM) for investigating mineral-water interfaces.
  • To highlight the capabilities of these techniques in characterizing interfacial properties.
  • To advance the fundamental understanding of aqueous mineral interfaces.

Main Methods:

  • Nonlinear optical spectroscopy provides information on water orientation and dynamics.
  • Atomic force microscopy (AFM) resolves interfacial water density and forces.
  • Synergistic application of these techniques for comprehensive interface analysis.

Main Results:

  • Nonlinear optical spectroscopy and AFM offer complementary insights into interfacial phenomena.
  • These methods enable the study of both neutral and charged mineral-water interfaces.
  • Detailed characterization of water structure and ion behavior at interfaces is achievable.

Conclusions:

  • The combination of nonlinear optical spectroscopy and AFM is a powerful strategy for studying mineral-water interfaces.
  • This approach enhances our fundamental understanding of interfacial processes.
  • Further research utilizing these techniques will deepen knowledge of aqueous mineral systems.