Video: Demonstration of spin coating with flexible foil substrates
In this video you can see how a flexible piece of aluminium foil adheres to the substrate chuck while spin coating without the need for vacuum. This is ideal for depositing graphene onto metal foils without defects imposed by a vacuum, for example. The foil is washed with isopropanol before spin coating an organic semiconducting polymer onto the surface.
A common query with our vacuum-free spin coating system is how the substrate stays in place without vacuum. The substrates are held in place primarily by friction between the bottom and sides of the substrate with the surface and edges of the vacuum-free substrate chuck respectively.
We recommend that you choose substrate chuck with recesses that match your most commonly used substrate sizes. However, provided the substrate is a good fit within the recess on at least two sides, or has at least 3 points of contact, even irregularly shaped substrates can be spin coated onto with high fidelity.
In a related video, we achieved success spin coating onto parafilm for a bit of fun (and to demonstrate the robustness of the process).