Does it exist any material which can get sticky when electrically charged?

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Asdfa

I'm currently working in a stunning gadget project: a real batclaw. Batman uses this gadget in his films for reaching the roofs in matter of seconds. The gadget consists in 3 parts. A powerful rope launcher, a rope and the claw. I think that using a claw makes this gadget imprecise and risky so I was wondering wether I could use some sticky material. Does it exist any material which can get sticky when electrically charged, just like the geckos when they climb?
Thanks in advanced.
Fah King Genios yes I already thought about electromagnetism but it wouldn't work fine. The purpose of this gadget is to climb fastly to the roofs. 99.9 % of the buildings on earth haven't got any metal piece with an enough size in the right place to achieve this. I need something with similar characteristics as electromagnets but which works with other kinds of materials like stone or bricks, not just metals.

Sorry for my bad English, I'm from Spain.

Answer
yes, its called an electromagnet... when you run a current or electricity through it, it becomes very sticky to other metal

Does it exist any material which gets sticky when electrically charged?

Asdfa

I'm currently working in a stunning gadget project: a real batclaw. Batman uses this gadget in his films for reaching the roofs in matter of seconds. The gadget consists in 3 parts. A powerful rope launcher, a rope and the claw. I think that using a claw makes this gadget imprecise and risky so I was wondering wether I could use some sticky material. Does it exist any material which can get sticky when electrically charged, just like the geckos when they climb?
Thanks in advanced.

Answer
I have never heard of a material that does this!

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