Surface potential sensor


Surface Potential Sensor

The KSV NIMA Surface potential sensor complements data obtained with the Langmuir Trough to determine monolayer composition, molecular orientation, and degree of molecular dissociation or molecular interactions at the interface. The non-contact and non-destructive vibrating plate capacitor method ensures very good accuracy and reproducibility while maintaining minimal drift.


  • Determining effective dipole moments.

The sensor can be used to determine effective dipole moments through simple surface potential measurements of a compressed film.

  • Determining molecular orientation.

The provides information about molecular orientation by observing changes in surface potential and combining the data with surface pressure information.

  • Film electronic structure characterization.

Small changes in the electronic structure of molecules can be detected by measuring the change in surface potential.

  • Molecular structure characterization.

Quantify the effects of changes to molecular structure through positional offsets and peak values of the surface potential plots.

  • Complex formation monitoring.

Observe and follow complex formations between monolayers, sub-phase species or adsorbates.

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