The alignment of the nuclear spins in parahydrogen can be transferred to other molecules, where it enhances NMR signals by several orders of magnitude. This approach enables NMR even in the absence of magnetic fields, and offers unprecedented opportunities in physics, chemistry, biology and medicine.
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Münnemann, K., Spiess, H. The art of signal enhancement. Nature Phys 7, 522–523 (2011). https://doi.org/10.1038/nphys2004
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DOI: https://doi.org/10.1038/nphys2004
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