Brand: KSV NIMA Product: SPOT SURFACE POTENTIAL SENSOR
The KSV NIMA Surface Potential Sensor is a compact and highly sensitive characterization instrument that offers complementary data on the packing and orientation of Langmuir films. The KSV NIMA Surface Potential Sensor (SPOT ) measures the potential difference above and below the film.
The KSV NIMA Surface Potential Sensor allows complementing data from surface pressure - area isotherm measurements that are 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 most common applications are:
- Determining effective dipole moments - The KSV NIMA SPOT can be used to determine effective dipole moments through simple surface potential measurements of a compressed film. - Determining molecular orientation - The KSV NIMA SPOT can be use to obtain information on molecular orientation by observing changes in surface potential and combining the data with surface pressure information. - Film electronic structure characterization - Even the smallest change 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, subphase species or adsorbates.
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 subphase below the monolayer.