| http://www.w3.org/ns/prov#value | - Examples of useful detectable elements include, but are not limited to, isotopes of elements otherwise desirably present in the completed device, e.g., aluminum, nitrogen, boron, phosphorus, gallium, oxygen, vanadium, titanium, germanium, silicon, carbon or combinations of these, and isotopes of carbon and silicon in particular are utilized in certain embodiments of the invention.
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