Employing nanoscale devices that use electromagnetism, researchers found that the devices were sensitive enough to discern the mass of viruses a hundred billion times lighter than a human hair strand. Image credit: Wikimedia CommonsResearchers from the University of Waterloo have developed a new and inexpensive process for measuring tiny objects that could pave the way for more accurate sensors to be used in the fields of medical research and gas detection.
Employing nanoscale devices that use electromagnetism, researchers found that the devices were sensitive enough to discern the mass of viruses a hundred billion times lighter than a human hair strand.
"Medical researchers would finally have a more accurate tool for detecting viruses and bacteria, and that could lead to better clinical diagnosis," said Hassan Askari, a researcher and Ph.D candidate at Waterloo.
Additionally, researchers found that the new process — involving a sensor composed of a magnetic particle fixed to a small resonator plate and coil — could potentially enough generate electricity to power the sensor itself, thereby reducing interference and improving accuracy.
"The concept is very beautiful," said Askari, who co-authored the research with Ehsan Asadi, also a Ph.D student at Waterloo. "If we can optimize the design, the hope is we can develop a self-powered mass sensor."
The research is published in the journal Measurement.
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