In a new work, the authors created a wearable X-ray detector from non-toxic metal-organic frameworks
Most X-ray detectors are built into massive and stationary instruments, such as a tomograph. The authors of the new work decided to make their design more universal.
For example, round detectors can be used insome applications for radiation monitoring, as well as for medical imaging. In addition, previously it was not possible to make the detector completely free of heavy metals: the structures still contained lead.
During their new work, the authors mixeda solution of nickel chloride salt and 2,5-diaminobenzene-1,4-dithiol (DABDT) for several hours to create a MOF (metal-organic framework structure) in which the nickel would bind the DABDT molecules.
The team then placed a nickel-containing MOFbetween gold film electrodes, one of which was on a flexible plastic surface. This was needed to make a flexible X-ray detector. To do this, the researchers used copper wires to carry current from each pixel of a 12x12 matrix and coated the entire device with a flexible silicone-based polymer.
The authors believe that their device will help create the next generation of universal radiology equipment.
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