Have you ever wondered what a virus sounds like? Or what noise a bacterium makes when it moves between hosts? If the answer is yes, you may soon get your chance to find out, thanks to the development of the world’s tiniest ear. The “nano-ear,” a microscopic particle of gold trapped by a laser beam, can detect sound a million times fainter than the threshold for human hearing.
Looking at this from a completely scientific perspective, this is exciting news. But with the advent of new technology, sometimes there are downsides – like when the technology gets into the wrong hands.
It’s still at the experimental stage, but this could lead to far more sensitive surveillance microphones in the future. The required laser beam could be carried by a difficult-to-detect optical fiber strand to the sensor. Combined with DSP and advanced acoustic signal processing algorithms, this could represent a major security threat.
We already know that listening and viewing devices can be planted in homes and offices or people can carry audio listening devices on their clothing, etc. However, all of this requires a bit of work or being within a reasonable range of proximity to your target. Even then, the listening/recording quality may not be perfect. Can you imagine what a scary world this would be if people’s ears could be devised to be listening devices – not to mention with superb hearing capability? This sounds like some espionage Sci-Fi movie to me. Read the full article »





