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arXiv 1302.2977cond-mat.mes-hall
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纳米傅里叶变换MRI

Nanoscale Fourier-transform MRI

John M. Nichol, Tyler R. Naibert, Eric R. Hemesath, Lincoln J. Lauhon, Raffi Budakian

摘要:

我们报告了一种纳米级脉冲核磁共振成像和光谱学的方法。周期性射频脉冲用于在固体有机样品的统计极化中产生时间相关性。通过施加一系列强磁场梯度脉冲对自旋密度进行空间编码,所述强磁场梯度脉冲是通过将电流聚焦通过纳米尺度的金属收缩而产生的。我们演示了这种技术,使用硅纳米线机械振荡器作为磁共振传感器图像1H自旋在聚苯乙烯样品。我们得到一个二维投影的样品质子密度与约10 nm的分辨率。

英文摘要:

We report a method for nanometer-scale pulsed nuclear magnetic resonance imaging and spectroscopy. Periodic radiofrequency pulses are used to create temporal correlations in the statistical polarization of a solid organic sample. The spin density is spatially encoded by applying a series of intense magnetic field gradient pulses generated by focusing electric current through a nanometer-scale metal constriction. We demonstrate this technique using a silicon nanowire mechanical oscillator as a magnetic resonance sensor to image 1H spins in a polystyrene sample. We obtain a two-dimensional projection of the sample proton density with approximately 10-nm resolution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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