# Can chemicals change crystal structure by only touching?

Are there any known, or suspected compounds that take the crystal structure of what ever object they are touching, i.e. if it touches $\ce{NaCl}$ it would turn into a face centered cubic crystal structure.

• What do you mean by touching? Rubbing to crystals and wow now they have the same structure? May 2, 2015 at 21:10
• @Mithoron sort of, but like a liquid crystal, more like: Oops spilled this, OMG its now a the structure of that randomly placed salt on the floor May 2, 2015 at 21:21