how to generate electrostatic?

Hello naim87

Do you have any "Certain Materials" in mind?

If not, you don't actually need a battery at all, just friction and effort.

Try these material pairs:

1. Amber + Wool
   
2. Glass + Silk
3. Fur + Amber
4. Plastic comb + Dry Hair
5. There are many others.

Have a look at: http://en.wikipedia.org/wiki/Electrostatic_generator

You should find out how to make yourself a simple Van de Graaff generator which can generate a million volts and more - Note that as the charge builds up on the upper charged conductor, the effort re4quired to turn the belt and get the electrons up to that conductor increases proportionally. (you have to do the work, to get the result)

If your hair and the air is dry, comb your hair with a plastic comb, and you should find the comb is charged enough to [attract small pieces of tissue paper, plus your hair should stand on end, because of mutual repulsion of like charges.

As I am unsure whether the above information is what you are seeking, please advise further.

Kind Regards....

thanz for the explanation, it is very helpful. May you assist me with the right web page about the material pairs that can produce effective electrostatic charge.I would also want to know what type of charge that can be produced by the material, which negative and which positive. I would like to invent something small but can produce very highly both negative and positive charge electrostatic. By using that Van de Graaff generator, it need space. That why i would like to seek for the alternative way. Hopefully you can assist me more. thanz.

Hello naim87

If you want something very small, and capable of generating around 40kV, enough for a spark some 8mm long, try a piezoelectric gas lighter.

Refer: http://en.wikipedia.org/wiki/Piezoelectricity

If you are intending to generate both (+) and (-) charges simultaneously, remember to keep them separated, or else they cancel each other out.

An interesting example of static electricity discharge, can be seen in a darkened room, where you pull adhesive tape apart suddenly.

The discharge takes place across the ever-increasing gap, just where the tape separates from the roll.

PVC Insulation tape is best, but plain household adhesive tape, or masking tape, works quite OK for showing this effect.

Have fun experimenting.

Kind Regards....

Thanz for the tips, It is a very nice info..