Nearly all disease take time and money to diagnose . A fresh test that overwork a quirk of physics could make lineage test for certain disease quicker , cheaper , and easily execute in virtually any setting .
When light moves through water , or windowpane Methedrine , it bends slightly . This is a familiar phenomenon to virtually everyone , and it happens with crystals that have a regular and round-eyed structure .
A less familiar phenomenon isbirefringence . This materialize when watch glass have a somewhat more complicated structure . When a low-cal wave remove one of these crystals , part of it is crumpled at one slant , and part of it is dead set at another angle . Essentially the light-colored wave is cleave in two . Its two character travel through the center at different angles , at different swiftness , and are polarized in different way .
double refraction is not a factor when swooning move through origin . come out a drop of line of descent on top of a horizontally polarizing filter , then put a vertically polarizing filter on top of it , and all the lighting will be blocked out . However , tot up some enzymes to the line and they take form vitreous silica . These vitreous silica polarise the light in two different direction , which means that same drop of blood , squished between polarizers , will of a sudden allow light through — and it will let it through in a sure traffic pattern .
With the correct enzymes , the pattern will commute calculate on the presence of glucose or cholesterol , HIV or Ebola , or even malaria . The pattern envision above is the one that emerges if the Ebola computer virus is present in the blood . And it ’s visible to the bare eye . trial like this mean that technicians can make diagnosis with just a couple of cheap polarise filters ( sunglass are polarise filter ) , some line of descent , enzymes , and the ability to know patterns .
At a prison term when healthcare price are going up , the ability to name people everywhere , with little money and small equipment , could make a magnanimous difference . Let ’s hope we see more low-toned - cost healthcare engineering science like this in the future .
[ Source : Lipidic Cubic Phases as a Versatile Platform for the Rapid Detection of Biomarkers , computer virus , Bacteria , and Parasites , Diagnostics with Birefringence ]
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