I haven't the equipment or the time to measure the degree and spectrum of the "blackness". Suffice it to say, you can still see a very dim spot if you shine a variety of lasers of different wavelengths onto the surface. Naturally, the substrate, PET film, heats up and burns when you do this.
I made this material in 2013 and there has been no noticeable change in its properties since then. Fabricated by a continuous process, this film could be made for a few cents per square meter. A machine designed for this specific application would cost about 6 million dollars US. I would like to be more specific, but this material was made under an NDA with a large semiconductor company and I'm not sure if this application would be covered under it. ------- Original Message ------- On Tuesday, May 30th, 2023 at 2:33 PM, Andrew Meulenberg <mules...@gmail.com> wrote: > depending on its degree and spectrum of "blackness" (and cost?), it > could have many applications. Did it retain its properties as the > oxide grew? >
