Increasing output of reflectivity experiments on the structure of molecularly-thin layers

What is it about?

This work presents a new twin-compartment solid-liquid cell for neutron reflectometry. Instead of using a silicon substrate for only one sample area, the design splits the substrate into two independent compartments, so that two samples or two conditions can be measured side by side on the same mounted crystal. The paper describes the design and testing of three prototypes and demonstrates their use on different reflectometers with asymmetric bacterial model membranes, gold-coated substrates, and self-assembled supported lipid bilayers

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Photo by Carla on Unsplash

Photo by Carla on Unsplash

Why is it important?

Many solid-liquid neutron reflectometry experiments are limited not only by beam time, but also by sample preparation time, alignment time, substrate availability, and the need for scarce deuterated or biological materials. By allowing two experiments on the same substrate, the twin-compartment design increases throughput, reduces solvent and sample consumption, shortens preparation and alignment, and enables more reliable side-by-side comparisons and control experiments. In practice, it makes solid–liquid neutron reflectometry more efficient and better suited to both current and next-generation instruments

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