U.S. successfully develops micro-magnetic resonance sensors

the U.SNational Institute ofStandardsand Technology has developed an ultra-sensitive micro-magnetic resonance sensor that can react to very small samples, a technology that takes the detection sensitivity of mrsiat to a new level and will be used in a wide range of applications in chemical analysisThe findings were published recently in the Proceedings of the National Academy of SciencesNuclear Magnetic Resonance (NMR) technology can directly study the structure of proteins, nucleic acids and other molecules with relative molecular mass (less than 20,000 Daltons) in solutions and living cells without damaging cells, with the advantage of detecting the microstructure and interaction of liquids and solids in a non-invasive manner, but in the past, mrThe new technology allows MRI testing to be performed with very high sensitivityScientists place dissometric sensors side by side with microfluidic channels on top of a silicon chip that detects magnetic signals when water flows through hydrogen atoms in water moleculesThe advantages of volume and precision make it possible to even detect weak magnetic resonance signals from small atomic samples in adjacent microchannelsExperts say that the most effective time for MRI tests is when the size and location of the sensor and the sample are close to that momentAs a result, new sensors are very efficient at screening many chemicals and contribute to the rapid generation of new drugs, and the biomedical imaging field has proven the usefulness of this technologyThe "remote NUCLEAR magnetic resonance" technology developed on this basis can detect the flow of small amounts of liquid gas inside soft materials such as biotissue and porous rock, expanding its application in the field of industrial processing and petroleum exploration(Zhang Mengran)