| http://www.w3.org/ns/prov#value | - The core 11 is an optical fiber in FIG. 1a and a hollow or solid pyramidal tip in FIG. 1b, attached to a flexible microfabricated cantilever 14 of the kind used in scanning force microscopy, often referred to as ???atomic force microscopy??? or AFM. The opaque coating material typically is a highly reflective metal such as aluminum or silver, having a typical thickness of 100-300 nm.
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