According to the latest news from the official website of the University of Leiden in the Netherlands, the researchers developed a new type of nuclear magnetic resonance microscopy (NMR), which is one thousand times more sensitive than the existing NMR microscope and can observe the relaxation time of copper nuclei at the nanosecond scale. It is expected to bring better observation instruments for medical diagnosis and basic physics research.
The research team published in the recent scientific literature preprint online database website pointed out that in order to test the sensitivity of the new microscope, they tested the atomic nucleus spin lattice relaxation time of copper at 42 millimeters, showing Sensitivity is a thousand times higher than the current world's highest recorded nuclear magnetic resonance microscope.
The researchers explained that the nucleus is charged and spins around their axes, and they act like tiny electromagnets to generate their own magnetic fields. If the knee is injured, the doctor will look at the joint through a magnetic resonance imaging (MRI) to determine what is wrong. Put your knees in a uniform magnetic field and the nucleus will point in the same direction along the axis. The MRI then sends a specific RF wave through the knee, causing some axes to flip, and those nucleus will recover after the RF signal is terminated. These radio frequency waves reveal the location of the atoms and provide the doctor with accurate knee images.
Magnetic resonance imaging is the medical application of nuclear magnetic resonance. Based on the same principle, physicists can also use this technique to study basic material phenomena, one of which is the so-called "relaxation time", which is the time when the nucleus recovers and provides a lot of information about the properties of matter.
The researchers point out that NMR microscopy provides new techniques for physicists to study the rational mechanisms behind physical processes at the atomic level, such as the strange behavior of special systems in extremely cold conditions. The breakthrough in NMR technology will eventually promote the development of medical magnetic resonance instruments. Gemma Vignal, a Ph.D. student at the School of Physics at Leiden University, said that if this technique is used to study the brains of Alzheimer's patients, it can reach the molecular level and see how iron is immobilized in proteins.
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