As mentioned in the above answer, the thickness you will get depends a lot on the wettability of your solvent to the specific substrate. Other than that, if you know your viscosity of the solution, you can calculate the layer thickness (there are tools available for that). But by far the fastest way is to just start experimenting with your specific system. Maybe chlorobenzene or some less volatile solvent would be a good idea. Chloroform could simply evaporate away before the film has time to form.
As mentioned in the above answer, the thickness you will get depends a lot on the wettability of your solvent to the specific substrate. Other than that, if you know your viscosity of the solution, you can calculate the layer thickness (there are tools available for that). But by far the fastest way is to just start experimenting with your specific system. Maybe chlorobenzene or some less volatile solvent would be a good idea. Chloroform could simply evaporate away before the film has time to form.
Hi...for 100nm thickness you can take conc. between 5-10 mg/ml and RPM 2-5k. To be more precise(according to my experience) for 5mg/ml in chloroform, RPM 3k will give thickness less than 100nm. Also it depends on substrate sometime. if you take Si, you get very thin at the same speed. So you have to be very careful. Now you can start with 5mg/ml and 3k RPM and then you can optimize.
Hi...for 100nm thickness you can take conc. between 5-10 mg/ml and RPM 2-5k. To be more precise(according to my experience) for 5mg/ml in chloroform, RPM 3k will give thickness less than 100nm. Also it depends on substrate sometime. if you take Si, you get very thin at the same speed. So you have to be very careful. Now you can start with 5mg/ml and 3k RPM and then you can optimize.
As mentioned in the above answer, the thickness you will get depends a lot on the wettability of your solvent to the specific substrate. Other than that, if you know your viscosity of the solution, you can calculate the layer thickness (there are tools available for that). But by far the fastest way is to just start experimenting with your specific system. Maybe chlorobenzene or some less volatile solvent would be a good idea. Chloroform could simply evaporate away before the film has time to form.
As mentioned in the above answer, the thickness you will get depends a lot on the wettability of your solvent to the specific substrate. Other than that, if you know your viscosity of the solution, you can calculate the layer thickness (there are tools available for that). But by far the fastest way is to just start experimenting with your specific system. Maybe chlorobenzene or some less volatile solvent would be a good idea. Chloroform could simply evaporate away before the film has time to form.
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Hi...for 100nm thickness you can take conc. between 5-10 mg/ml and RPM 2-5k. To be more precise(according to my experience) for 5mg/ml in chloroform, RPM 3k will give thickness less than 100nm. Also it depends on substrate sometime. if you take Si, you get very thin at the same speed. So you have to be very careful. Now you can start with 5mg/ml and 3k RPM and then you can optimize.
Hi...for 100nm thickness you can take conc. between 5-10 mg/ml and RPM 2-5k. To be more precise(according to my experience) for 5mg/ml in chloroform, RPM 3k will give thickness less than 100nm. Also it depends on substrate sometime. if you take Si, you get very thin at the same speed. So you have to be very careful. Now you can start with 5mg/ml and 3k RPM and then you can optimize.
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