By detecting changes in the refractive index of the water surface in the presence of surfactant molecules, MicroBAM provides information on homogeneity, phase behavior and film morphology without the need for any external agents such as fluorescent dyes which could interfere with the Langmuir layer.
MicroBAM enables the visualization of Langmuir monolayers or adsorbate films at the air-water interface for example as a function of packing density.
Pre-deposition Langmuir-Blodgett layer quality check
Langmuir layer structure and behavior studies
Features & Benefits
The KSV NIMA MicroBAM is an easy-to-use instrument for non-invasive imaging of mono-molecular layers at the air-water interface. The good image quality and lateral resolution make it an ideal instrument for the visualization of morphological film parameters (e.g. compressed film homogeneity, domain size, shape and packing). Real-time observation and recording of film structure enables dynamic activity to be captured.
The KSV NIMA MicroBAM can be used with most KSV NIMA Langmuir and Langmuir-Blodgett Troughs, to provide real-time image measurements as a function of time or surface pressure. The KSV NIMA MicroBAM connects directly to the computer via USB making it remarkably easy to setup and use.
Chemical exfoliation of graphite is recognized as one of the most potential methods for producing graphene in industrial scale. The result of the exfoliation process is graphene oxide, which is known to disperse well in water due to its ionizable –COOH groups. In a study by Kim and coworkers (Kim et al., ‘J of American Chemical Society’ (2010), 132, pp. 8180-8186), the properties of graphene oxide were investigated by examining the amphiphilic nature of the molecule in a Langmuir trough.
Langmuir isotherms and Brewster angle microscopy were used to examine the properties and observe the formation of graphene oxide sheets at air-water interfaces. The study showed how monolayer imaging can improve solution processing and to help finding the optimal deposition parameters for graphene oxide materials.