Bare Conductive’s Electric Paint is just like any other water-based paint, except that it conducts electricity! This means that you can paint wires or sensors directly onto almost any material around you, including paper, wood, plastic and glass.
The Electric Paint 10ml Pen is perfect for small scale projects where detail is important, or for painting, soldering or repairing small breaks. You will find it in some of our kits where creating a nice small circuit is necessary.
Nontoxic, solvent free and water soluble, Electric Paint Pens are great for prototyping, and safe for makers of all ages. Once applied the paint dries quickly at room temperature, and can be removed with soap and water.
Want to make it more intelligent? Try Electric Paint alongside microcontrollers like the Touch Board, Arduino, Raspberry Pi, MaKey MaKey, or LilyPad.
Conductivity And Resistance
Our Electric Paint has a sheet resistance of approximately 55 ohms/square at 50 micron film thickness. If applied using a brush or screen-printed by hand, this decreases to approximately 32 ohms/square.
This means that if you have a square patch of the paint that is 50 microns thick, with any side length, the resistance from one side to the other will be 55 ohms. If you double the length compared to the width, the resistance will also double to 110 ohms. If you halve the length compared to the width, the resistance will halve to 27.5 ohms.
Wikipedia has a great page with further explanation of sheet resistance (and why it is used for materials applied in thin layers) here. There is also more practical information on using the paint in Bare Conductive's Application Notes.