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Scientists from Queen Mary College of London (QMUL) have showcased a lab-in-a-backpack, designed to supply a low-cost moveable answer for COVID-19 testing — and powered by upcycling outdated pc onerous drives into open supply Arduino-powered centrifuges.
“We’re excited for the potential of this cellular lab to do COVID-19 assessments and the chance to democratize entry to cheap testing expertise,” says corresponding creator Stoyan Smoukov, professor at QMUL, of the work. “It’s made doable by our philosophy of making low-cost devices at any time when doable from advances in electronics, or current devices.”
Simply $51 in components sufficiently small to slot in a backpack is sufficient for high-sensitivity COVID-19 testing. (📷: Lin et al.)
Based mostly on the reverse transcription loop-mediated isothermal amplification (RT-LAMP) testing methodology, which provides comparable sensitivity to PCR testing, the backpack incorporates all the things required to course of six saliva samples in 90 minutes at a price in chemical compounds of $3.50 per pattern processed – lower than half the most cost effective off-the-shelf LAMP check.
Key to the “lab,” which prices simply $51 excluding the backpack through which it’s saved, is a compact centrifuge dubbed “CentriDrive,” constructed from upcycled pc onerous drives salvaged from e-waste streams and pushed by Arduino Nano microcontrollers. The CentriDrive may be pushed from a chargeable battery, or linked to an car battery to be used in-the-field.
The center of the package is a centrifuge system constructed from discarded onerous drives, dubbed CentriDrive. (📷: Lin et al.)
“Reuse is a excessive worth choice for vitality and supplies sustainability, and we’re glad that relatively than exporting electronics waste to growing international locations, we are able to export methods to empower folks and switch waste pc onerous drives right into a centrifuge,” Smoukov says. “The COVID-19 check is a well timed utility, however we additionally consider with this CentriDrive package folks may carry out a big array of routine blood and urine assessments, offering a centrifuge away from central hospital amenities.”
“On this examine, utilizing the LAMP check methodology together with a low-cost centrifuge, we supplied a cheap, speedy and correct methodology for the detection of COVID-19,” says lead creator Emily Lin. “It won’t solely present a viable and cheap check package for areas corresponding to Africa, the place modern options are significantly necessary in the course of the COVID-19 pandemic; it will also be utilized in resource-rich areas, for instance, in highschool school rooms to display how you can check for COVID-19.”
The design of the Arduino Nano-powered CentriDrive has been launched as open {hardware}. (📷: Lin et al.)
“Combining open entry science with open supply {hardware} lets everybody on the earth to check this for themselves with minimal sources,” Smoukov provides. “Maybe this royalty-free invention will let folks tinker and educate themselves and others on how completely different blood or virus assessments work, or the simplicity and value benefit could encourage folks to base an organization round it.”
The workforce’s work has been revealed underneath open-access phrases within the journal PLOS One.
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