13 Nov uv reflectivity of aluminum
You would get little corrosion resistance (rust prevention) from very thin coatings, but for indoor use you may not need it. Yes – an integrating sphere is used to measure the reflectance. Good luck. If your company produces specular anodized aluminum sheet with specular reflectances between 87% to 95% I would be very interested in receiving some information from your company. PTFE is naturally very low energy absorbing between 200-2000 nm and almost all of the energy is either reflected or transmitted. Presumably, they would have done tests to determine that their chemistry brightens as good as or better than generic solutions. We are still working on specific cleaning procedures depending on the application. But with some alloys and thicker anodizing the difference may not amount to much. The only way to get uniform energy distribution is with a perfect sphere with 100% Lambertian distribution material (create an integrating sphere). It is most definitely gold plating. NASA uses gold electroplating (or sometimes gold sputtering) on satellite-mounted infrared telescopes. For the reflective media, typical pore volume runs between 30-40% and the pore sizes will vary from sub-micron to several microns in diameter. We also use third-party cookies that help us analyze and understand how you use this website. Necessary cookies are absolutely essential for the website to function properly. All of the high reflectivity materials can also be found on the Reflectivity page. Good luck. link Here you would want to choose a material with decent reflection vs. absorption and something that will structurally function. : I'm trying to come up with a quote for additional panels; need info. You would probably have good color with 1/4 micron (10 millionths of an inch) if the gold is plated on a bright nickel layer. Is it prone to biofilm formation? Yes, good quality costume jewelry is sometimes called "micron gold": 1 micron thickness, and good color can be seen at 1/4 of that thickness on polished jewelry. 1 micron is .00004", Thanks Willie. Post your own question ... Are you sure it's plating over powder coating rather than the reverse? This choice raised the question of which side to use. I don't have data about how well it actually works, if at all -- but they should. 1/2 micron is .0000005 meters or approx., as per your conversion factor, .00002". I attach some photos. These cookies do not store any personal information. The product can also be cut into sheets, die-cut into specific part geometries, or rolled into tube form. Perhaps a supplier of proprietary bright dip solutions like Phosbrite by Albright & Wilson can help you. While this is fine for telescopes, the cost of gold probably makes this impractical for more mundane products. Any clues where I might find this information? I work for a coil anodizer, specializing in clear sheet for the lighting market. Although the current products will respond to wavelengths above and below this value, they will in general take longer to change color. }, How do I purchase the dosimeters mentioned in the webinar, and are there special ones for different wavelengths? Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. This absorbed energy will begin to break down the material, so we therefore do not recommend it being used below 210 nm. Fluence (UV Dose) Required to Achieve Incremental Log Inactivation of Bacteria, Protozoa, Viruses and Algae, the chart on the Porev Virtek PTFE Reflectivity. Only close to around 700-870 nm, there is a moderate reflection drop down to slightly below 80%. The difference between the selected Porex Virtek PTFE material (e.g PMR05) and PMR20 will be transmitted energy. Dosimeters are tuned for specific wavelengths. Polycarbonate specifically will be damaged by almost all UV energy if not properly treated. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful. What is the difference in exposure time for a virus vs a bacterium? These measurements were done using an integrating sphere, over a 250–2500 nm range.
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