I just can't wrap my head around this development--not because it's so big, but because it's so tiny.
To put this in perspective, it turns out that the thinnest human head hair is about 10,000 times thicker than this new needle. Obviously, the majority of us won't find any use for a needle of this size. However, this is a breakthrough device with applications for biophysical research.
The nanoneedle is designed to penetrate the membrane of a living cell for the targeted delivery of one or more molecules into the cytoplasm or the nucleus. In addition, it can be used as an electrochemical probe and as an optical biosensor.… Read more