Magnetic resonance force detection using a membrane resonator
| Autor: | W. Ruchotzke, A. Belding, Jeremy Cardellino, Nicolas Scozzaro, E. C. Blomberg, P. C. Hammel, Vidya P. Bhallamudi, Denis V. Pelekhov, Brendan McCullian |
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| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Biophysics Magnetic resonance force microscopy FOS: Physical sciences 02 engineering and technology 01 natural sciences Biochemistry Resonator chemistry.chemical_compound Nuclear magnetic resonance Quality (physics) 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Sensitivity (control systems) 010306 general physics Image resolution Condensed Matter - Mesoscale and Nanoscale Physics business.industry Detector 021001 nanoscience & nanotechnology Condensed Matter Physics Membrane Silicon nitride chemistry Optoelectronics 0210 nano-technology business |
| Zdroj: | Journal of magnetic resonance (San Diego, Calif. : 1997). 271 |
| ISSN: | 1096-0856 |
| Popis: | The availability of compact, low-cost magnetic resonance imaging instruments would further broaden the substantial impact of this technology. We report highly sensitive detection of magnetic resonance using low-stress silicon nitride (SiN$_x$) membranes. We use these membranes as low-loss, high-frequency mechanical oscillators and find they are able to mechanically detect spin-dependent forces with high sensitivity enabling ultrasensitive magnetic resonance detection. The high force detection sensitivity stems from their high mechanical quality factor $Q\sim10^6$ combined with the low mass of the resonator. We use this excellent mechanical force sensitivity to detect the electron spin magnetic resonance using a SiN$_x$ membrane as a force detector. The demonstrated force sensitivity at 300 K is 4 fN/$\sqrt{\mathrm{Hz}}$, indicating a potential low temperature (4 K) sensitivity of 25 aN/$\sqrt{\mathrm{Hz}}$. Given their sensitivity, robust construction, large surface area and low cost, SiN$_x$ membranes can potentially serve as the central component of a compact room-temperature ESR and NMR instrument that has superior spatial resolution to conventional approaches. |
| Databáze: | OpenAIRE |
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