Surface science and interfacial studies

The interfacial behaviour of thin molecular films and nanosurfaces is a direct consequence of changes in their structure. Dual Polarisation Interferometry (DPI), the core technology of the AnaLight instrument range, is an optical technique used to understand the real-time structure and behaviour of thin films and nanosurfaces through quantitative measurement at sub-nanometer resolution.

The unique, absolute measurements of thickness, density (RI) and mass provided by DPI enable the researcher to question and understand the links between thin film structure and interfacial behaviour at levels of resolution not available from other laboratory-based techniques. DPI has been successful across a range of thin film applications, including polymers, surfactants, fine chemicals, nanoparticles and biomolecules.

DPI is a near-field technique, so can probe surfaces in scattering and opaque solutions, such as colloids and emulsions, which often affect other metrology techniques. This means that the DPI user can carry out experiments in the conditions of choice with minimal constraints on experimental design.

Application areas for DPI within surface science include:

• Thin film and interfacial behaviour analysis

• Absorption and adsorption behaviour for FMCG R&D

• Surface assembly and Nanotechnology

• Biocompatibility of surfaces

I want to measure surface science and interfacial studies:

	AnaLight Quantum: The AnaLight Quantum provides DPI's high-resolution measurement performance in an entry-level system for the surface scientist.
	AnaLight Nano200: The AnaLight Nano200 is designed to bring DPI's high-resolution measurement performance into development and discovery research facilities with a range of surface science and surface scientist applications.
	AnaLight NanoFlex: The AnaLight NanoFlex brings DPI's high-resolution measurement performance into development and discovery facilities with a need for automated sample throughput in surface science and Nanotechnology applications.
	Zetasizer Nano: The Zetasizer Nano can characterize surfactant molecules in solution. Dynamic light scattering may be used to determine the homogeneity of your surfactant, micelles, or detergents.