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 during spin coating - without the need for vacuum. This is ideal for depositing graphene onto metal foils without defects imposed by a vacuum. The foil is washed with isopropanol before spin coating an organic semiconducting polymer onto the surface.
One of the FAQs we get about our vacuum-free spin coating system is "How does the substrate stay 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 chucks with recesses that match your most commonly-used substrate sizes. However, provided that 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 degrees of precision.
In a related video , we successfully accomplished spin coating onto parafilm to demonstrate the robustness of the process (and have some fun)