| http://www.w3.org/ns/prov#value | - FIG. 26A is a detailed cross sectional view of one embodiment of a ???nano-sandwich Einzel??? lens 230 of the nano-emitter system 200 of FIG. 24A. Referring to FIG. 26A, lens 230 comprises annular metal electrode 240, above and below which are disposed upper metal membrane electrode 334, and primary electron beam acceleration electrode 232 respectively.
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