| http://www.w3.org/ns/prov#value | - The first material is commonly an insulating material, but may be semiconducting or of any material which is such as to hold the applied electric charge for a sufficient length of time to permit the method of the invention to take place. [0018] In addition to the locally charged regions, deposition of the second material may be assisted by application of an electrostatic precipitation field. [0019
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