Murnane (with Kapteyn) develops tabletop coherent EUV/soft-X-ray sources via high-harmonic generation and uses them for attosecond science and lensless coherent diffractive imaging (ptychography), achieving nanometer-scale, element-specific imaging of materials, nanostructures and dynamics. For context, this complements the established paradigm of NV-diamond ensemble magnetometry (Hahn-echo/DEER, nanoscale NMR, T1 relaxometry) operating near pT/√Hz sensitivity.