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planety_vuki
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What is easiest-to-obtain photoresist on which a minimum-feature-size of 1um can be integrated ?
planety_vuki said:What is easiest-to-obtain photoresist on which a minimum-feature-size of 1um can be integrated ?
berkeman said:What equipment do you have that you will use with this photoresist?
planety_vuki said:Well, first I want to practice on selective etching a copper printed board, using photoresist and UV lamp, all of these s easy to find, only I don't know what photoresist to buy and where to buy. Then with I want to use a lens to will focus masked light to make things smaller but not very small so that clean room is necessity.
I always wanted to be able to make microscopic structures myself. I saw the micro eiffel tower in the internet and that impressed me. I mean I'm not going to try to make integrated circuit, but simply metallic structures like eiffel tower or other tiny models.
berkeman said:BTW, for DIY projects like this, the Make Magazine website is a great resource:
http://blog.makezine.com/search/?q=etching+copper
planety_vuki said:But non of those DIYs use a photoresist. They just somehow cover some part of copper and so only uncovered part etches away. I need a photoresist, positive or negative doesn't matter, important is easy to find.
berkeman said:At least some of the copper clad boards come with photoresist already on them. Here are some supplies from Jameco that were referred to in the MAKE article on PCB etching:
https://www.jameco.com/webapp/wcs/s...141x/4K&ddkey=https:StoreCatalogDrillDownView
Can you use such boards with the photoresist already on them? That will probably be a lot more uniform coating than you can apply yourself...
And I did a Google search from the Jameco website for photoresist, and got lots of useful hits:
https://www.jameco.com/webapp/wcs/s...01&freeText=photoresist&search_type=jamecoall
Does any of that help?
EDIT -- at that Jameco search page, type photoresist into the Item #1 Google Search option box...
planety_vuki said:To make a micro 3D structure I will need to apply a layer of photoresist and shine masked light then apply another layer and repeat... Layer by layer s structure will be comleted. Then i will just dissolve unexposed part (or exposed part, depends on tone of photoresist) and reveal 3D structure. Then I'll observe my creation under microscope :D
The idea of buying ready photoresist applied copper clads is good idea but I don't know If i'll be able to strip the photoresists from them and use it.
A photoresist is a light-sensitive material used in the process of photolithography to create patterns on a surface. It is commonly used in the semiconductor and electronics industries for the production of microchips and other electronic components.
You can find a photoresist supplier by searching online for companies that specialize in supplying materials for the semiconductor and electronics industries. You can also ask for recommendations from colleagues or industry professionals.
There are two main types of photoresist: positive and negative. Positive photoresists become more soluble in a developer solution when exposed to light, while negative photoresists become less soluble in a developer solution when exposed to light. There are also different categories of photoresists based on their chemical composition and intended use.
The right photoresist for your project will depend on several factors, including the type of material you are applying it to, the desired resolution and pattern, and the processing techniques you will be using. It is best to consult with a photoresist supplier or a knowledgeable colleague to determine the best option for your specific project.
Yes, it is important to follow safety precautions when handling photoresist, as it can be harmful if ingested or comes into contact with skin or eyes. Always wear protective gear, such as gloves and goggles, and follow the instructions provided by the manufacturer for safe handling and disposal of the material.