Why choose MP-SPR for characterization of soft materials?

No water artifacts

While QCM (quartz crystal microbalance) instruments suffer from hydration effects as they measure wet mass, MP-SPR is an optical method and therefore, provides desired measurement of adsorbed molecules without solvent in interfacial layers (dry mass).

MP-SPR can be also used for measurement of swelling and hydration.

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Thickness and refractive index solved simultaneously

Thanks to our multiwavelength configuration with scanning angular range of almost 40 degrees, MP-SPR is capable of acquiring enough information to solve thickness and refractive index of the layer simultaneously using LayerSoLayerSolver™ - true layer characterizationlver™. This is possible even for nanolaminates. 

The most sensitive instrument for real-time adsorption kinetics on surfaces

Due to its plasmonic principle, MP-SPR is the most sensitive measurement for kinetics on surfaces. This is important in real-time measurements of nanoparticle adsorption kinetics, swelling and release.

From dry to wet state with the same configuration

Traditional SPR is developed to work in liquid. On the other hand, traditional ellipsometers work the best in air. Thanks to its goniometric configuration, MP-SPR works in both.

Cross-validation with microscopy and modelling possible

MP-SPR with electrochemistry, fluorescence or another specialty flow-cell allows for validation of measurements in-situ.

Thanks to its oil-free operation, same sample can be measured ex-situ with AFM, SEM or other techniques.

Results from MP-SPR are absolute and therefore can be directly related to physical properties, validated by established theoretical models, and can be confirmed also analytically.

MP-SPR measurements do not require vacuum

MP-SPR measurements can be performed at different pH, temperature (15 to 45 °C), electric potential. The measurements do not require vacuum.


 

Recommended MP-SPR instruments for thin solid films measurements:

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