Aussie scientists develop paper that tells blood type
Victoria, Australia (4E) – A team of scientists from Monash University in Australia has developed a paper that can tell a person’s blood type in text.
The 1 x 1 inch paper is a sensor made from a water-repellent layer with windows shaped in the letters corresponding to the blood types A, B, AB and O.
When blood touches the paper, its antigen reacts with the sensor and clots. The letter corresponding to the blood type then appears.
The blood typing paper also has windows for the minus and plus symbols to indicate if the blood type’s Rh factor is positive or negative.
The device, which can prove to be useful during emergencies, is also inexpensively manufactured, as it was made using regular inkjet printers.
Professor Wei Shen of Monash University, who led the research team, said the idea was inspired by a scene in the film “Harry Potter and the Chamber of Secrets” where, when Harry writes a question in Tom Riddle’s diary, the diary swiftly responds with a written answer.
“We found that more than 80 percent of the population… could not interpret the result even if the result from a perfectly functioned blood typing assay was presented to them,” Shen told the BBC. “But with a device that can spell out the patient’s blood type in written text, people will know their blood type easily,” he further added.
Not only is this innovation easy to use, it is also cheaper compared to blood typing services provided by hospitals and pathological laboratories worldwide. To add to that, Shen said it works faster, and with the same accuracy as advanced technologies offer.
This study was published in the journal Angewandte Chemie in April.