The KSV NIMA Surface Potential Sensor (SPOT) is used for determining molecular orientation changes in Langmuir films. Together with the surface pressure sensor included in all KSV NIMA Langmuir and Langmuir-Blodgett Troughs, it gives an in-depth view of the Langmuir monolayer interactions.
Features & Benefits
Double the amount of data – all in one software: The KSV NIMA Surface Potential Sensor is operated with KSV NIMA LB Software and does not require any additional software. Both the surface pressure and surface potential are automatically plotted in the same graph for simple comparison.
Accurate and reproducible measurements: The non-contact and non-destructive vibrating plate capacitor method ensures excellent accuracy and reproducibility.
Easy set up: The KSV NIMA Surface Potential Sensor connects directly to the KSV NIMA Interface Unit used with KSV NIMA L and LB Troughs. It is easily installed with a simple plug-and-play operation. The sensor has a flexible stand allowing rapid and easy integration with a trough. Furthermore, the sensor is factory calibrated for a quick start-up
The KSV NIMA Surface Potential Sensor measures the potential difference above and below the film and is sensitive to the sum of all the individual dipole moments. The changes in surface potential are measured by detecting the potential difference between the vibrating plate, which is placed above the monolayer, and the counter electrode, which is immersed in the sub-phase below the monolayer.
The sensor allows complementing data from surface pressure—area isotherm measurements obtained from a Langmuir and Langmuir-Blodgett Trough. It allows the determination of monolayer composition, molecular orientation, degree of molecular dissociation and molecular interactions at the interface.
The KSV NIMA Surface Potential Sensor is recommended for use with a KSV NIMA Langmuir, Langmuir-Blodgett or Microscopy Trough to enable combined surface pressure and surface potential measurements. The SPOT can also be used with other troughs together with a KSV NIMA Interface Unit.