Researchers have invented an adhesive, elastic patch capable of performing ultrasounds.
, study coauthor and postdoctoral researcher Hongjie Hu explained that the group “integrated an array of ultrasound elements into a soft elastomer matrix and used wavy serpentine stretchable electrodes to connect these elements,” thus creating a conformable patch for portable medical monitoring.
According to the team’s paper, the device is composed of a 16-by-16 array of transducer elements connected via a seven-layer electrode. This is all protected by a waterproof and biocompatible silicone elastomer. A backing layer made from a composite of silver-epoxy helps absorb excessive vibrations to broaden bandwidth capabilities and improve resolution.
One significant challenge the team initially encountered involved the actual manufacturing of the patch. Traditional fabrication methods often require high-temperature bonding procedures that thermally damage the device’s sensitivity. To solve this problem, Xu’s team replaced their patch’s soldering paste with a conductive epoxy that bonded at room temperature, thus avoiding any burn-related problems.
Already, the team’s patch shows promise across a number of medical areas and research. Among the potential usages: monitoring the progression of cancerous cells, which often stiffen as they spread; assessing sports injuries affecting tendons, ligaments, and muscles; and analyzing the efficacy of treatments for liver and cardiovascular diseases alongside chemotherapy results.
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