'I thought the sensor was destroyed, but later realised that the sample was outperforming every other sample we've ever made.' 🍶💧 How a postgraduate's accidental spill discovers a single drop can revolutionize nanosensor manufacturing 🧪🔬
Macquarie University engineers have developed a new technique to make the manufacture of nanosensors far less carbon-intensive, much cheaper, more efficient, and more versatile, substantially improving a key process in this trillion-dollar global industry.
The nanoparticles assemble themselves into a network held together by weak natural bonds which can leave so many gaps between nanoparticles that they fail to transmit electrical signals, so the sensor won't function. However, the new technique discovered by the Macquarie team bypasses this heat-intensive process, allowing nanosensors to be made from a much broader range of materials.
The new method was discovered after the study's lead author, postgraduate student Jayden Chen, accidentally splashed some ethanol onto a sensor while washing a crucible, in an incident that would usually destroy these sensitive devices. "It was like Goldilocks -- three microlitres was too little and did nothing effective, 10 microlitres was too much and wiped the sensing layer out, five microlitres was just right!"
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