Insplorion provides nanoplasmonic sensors, which enable ultrasensitive measurements of refractive index changes close to (< 30 nm from) the sensor surface. The sensors can be coated with a range of materials, which allows studies of how surface chemistry influences processes such as molecular adsorption and thin film phase transitions. Insplorion offers also plasmonic nanostructures of various types and sizes, allowing the user to perform systematic studies of how surface processes are influenced by the surface topography/structure.
• NPS is ideally suited to study the influence of surface topography and/or chemistry on surface processes.
• Surface chemistry, structure and curvature influence molecular adsorption as well as the structure and composition of adsorbed layers.
• A variety of sensor coatings is available, providing the possibility to tailor the surface chemistry.
• Insplorion offers sensors with different surface structure and curvature by varying the size and shape of the plasmonic nanostructures.
Insplorion’s nanostructured sensors are produced in a state of the art clean room facility, which guarantees stability, reproducibility and well controlled surface chemistry. The nanostructures cover the whole sensor area, forming a quasi random pattern on the surface. The structures are uniform in size and shape. On Insplorion’s standard sensors, the nanostructures are made of gold but other metals are available upon request. The nanostructures can be ordered uncoated or covered by a thin top coating.
Acoulyte sensors are QCM-D sensors with a SiO2 spacer layer deposited on the top gold electrode. The NPS structure is then deposited on top of this layer. The sensor surface can be covered by a top coating if desired. The diameter of the Acoulyte sensors is 14 mm. The NPS sensing structures are evenly distributed over the surface.
There are two standard sensor structures, which are disks mounted on the surface and disks embedded in the surface, creating a flat surface. But there are a variety of other structures made upon request, such as cones, truncated cones, caves, spherical facetted particles, rings, holes and wells. You can read more about the structures in the Insplorions Sensors brochure.