IGF::OT::IGF IN THIS PROPOSED PHASE II, SCIENTIC AND VANDERBILT UNIVERSITY WILL DEVELOP A NOVEL VACUUM FIELD EMISSION DIFFERENTIAL AMPLIFIER (VFEDA) USING LOW ELECTRON AFFINITY NANODIAMOND (ND) MATERIAL AS ELECTRON EMITTERS FOR HIGH-POWER ELECTRONIC APPLICATION IN HARSH ENVIRONMENTS. THE ND-VFEDA IS A FUNDAMENTAL CIRCUIT BUILDING BLOCK FOR VACUUM INTEGRATED CIRCUITS (VICS) IDEALLY SUITED FOR HIGH RADIATION AND SPACE APPLICATIONS. THE PROPOSED HIGH-POWER ND-VFEDA WILL BE CAPABLE OF OPERATING OVER A WIDE-TEMPERATURE RANGE (-125 C TO 450 C), POSSESS TOLERANCE TO EXTREME DOSES OF IONIZING RADIATION AND DELIVER THE LONG-TERM RELIABILITY AND STABILITY NEEDED TO SUCCESSFULLY EXECUTE ENVIRONMENTALLY STRESSFUL SPACE SCIENCE MISSIONS.