Nitrogen vacancy diamonds have emerged as sensitive solid-state magnetic field sensors capable of producing diffraction limited and sub-diffraction field images.Here,for the first time,to our knowledge,we extend those...Nitrogen vacancy diamonds have emerged as sensitive solid-state magnetic field sensors capable of producing diffraction limited and sub-diffraction field images.Here,for the first time,to our knowledge,we extend those measurements to high-speed imaging,which can be readily applied to analyze currents and magnetic field dynamics in circuits on a microscopic scale.To overcome detector acquisition rate limitations,we designed an optical streaking nitrogen vacancy microscope to acquire two-dimensional spatiotemporal kymograms.We demonstrate magnetic field wave imaging with micro-scale spatial extent and~400μs temporal resolution.In validating this system,we detected magnetic fields down to 10μT for 40 Hz magnetic fields using single-shot imaging and captured the spatial transit of an electromagnetic needle at streak rates as high as 110μm/ms.This design has the capability to be readily extended to full 3D video acquisition by utilizing compressed sensing techniques and a potential for further improvement of spatial resolution,acquisition speed,and sensitivity.The device opens opportunities to many potential applications where transient magnetic events can be isolated to a single spatial axis,such as acquiring spatially propagating action potentials for brain imaging and remotely interrogating integrated circuits.展开更多
基金National Science Foundation(CMMI-1826078)GrantováAgentura?eskéRepubliky(GA20-28980S)+5 种基金Cancer Prevention and Research Institute of Texas(RP180588)NSF Graduate Research Fellowship(279451)National Institutes of Health(1R01GM127696,1R21CA269099,1R21GM142107)Army Medical Research(W81XWH2010777)Air Force Office of Scientific Research(17RHCOR483,20RHCOR051,FA9550-15-1-0517,FA9550-20-1-0366,FA9550-20-1-0367)U.S.Air Force(FA8650-19-C-6024)。
文摘Nitrogen vacancy diamonds have emerged as sensitive solid-state magnetic field sensors capable of producing diffraction limited and sub-diffraction field images.Here,for the first time,to our knowledge,we extend those measurements to high-speed imaging,which can be readily applied to analyze currents and magnetic field dynamics in circuits on a microscopic scale.To overcome detector acquisition rate limitations,we designed an optical streaking nitrogen vacancy microscope to acquire two-dimensional spatiotemporal kymograms.We demonstrate magnetic field wave imaging with micro-scale spatial extent and~400μs temporal resolution.In validating this system,we detected magnetic fields down to 10μT for 40 Hz magnetic fields using single-shot imaging and captured the spatial transit of an electromagnetic needle at streak rates as high as 110μm/ms.This design has the capability to be readily extended to full 3D video acquisition by utilizing compressed sensing techniques and a potential for further improvement of spatial resolution,acquisition speed,and sensitivity.The device opens opportunities to many potential applications where transient magnetic events can be isolated to a single spatial axis,such as acquiring spatially propagating action potentials for brain imaging and remotely interrogating integrated circuits.
