6533b838fe1ef96bd12a3efd
RESEARCH PRODUCT
Solution nuclear magnetic resonance spectroscopy on a nanostructured diamond chip
Ilja FescenkoPauli KehayiasPauli KehayiasLykourgos BougasAndrey JarmolaAlexander NeumannF. M. BenitoSteven R. J. BrueckDmitry BudkerVictor M. AcostaAbdelghani LaraouiNazanin MosavianJanis Smitssubject
Magnetic Resonance SpectroscopyPhysics - Instrumentation and DetectorsScienceGeneral Physics and AstronomyFOS: Physical sciences02 engineering and technologyengineering.material01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyArticlelaw.inventionMicrometrelawPhysics - Chemical Physics0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)Physical Sciences and Mathematics010306 general physicsSpectroscopyPhysicsChemical Physics (physics.chem-ph)Quantum PhysicsMultidisciplinarySpinsCondensed Matter - Mesoscale and Nanoscale Physicsbusiness.industryDopingQDiamondGeneral ChemistryNuclear magnetic resonance spectroscopyInstrumentation and Detectors (physics.ins-det)021001 nanoscience & nanotechnologyLaserJarmola [BRII recipient]3. Good healthMagnetic fieldNanostructuresengineeringOptoelectronicsddc:500Diamond0210 nano-technologybusinessQuantum Physics (quant-ph)description
We demonstrate nuclear magnetic resonance (NMR) spectroscopy of picoliter-volume solutions with a nanostructured diamond chip. Using optical interferometric lithography, diamond surfaces were nanostructured with dense, high-aspect-ratio nanogratings, enhancing the surface area by more than a factor of 15 over mm^2 regions of the chip. The nanograting sidewalls were doped with nitrogen-vacancy (NV) centers so that more than 10 million NV centers in a (25 micrometer)^2 laser spot are located close enough to the diamond surface (5 nm) to detect the NMR spectrum of 1 pL of fluid lying within adjacent nanograting grooves. The platform was used to perform 1H and 19F NMR spectroscopy at room temperature in magnetic fields below 50 mT. Using a solution of CsF in glycerol, we demonstrate that 4 +/- 2 x 10^12 19F spins in a 1 pL volume, can be detected with a signal-to-noise ratio of 3 in 1 s integration. This represents nearly two orders of magnitude improvement in concentration sensitivity over previous NV and picoliter NMR studies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-08-04 |