Chen and colleagues (from my home town) write about “Plasmon-Assisted Audio Recording”, which records and replays sound using tiny “arrays of gold, pillar-supported bowtie nanoantennas”.
As they note, the technique is analogous to storing sound on photographic film, which was pioneered seventy years ago.
The experiments show that this form of storage is thousands of times denser than conventional magnetic recordings.
It’s early days, of course, but very promising.
Cool stuff. Nice work all.
- Chen, Hao, Abdul M. Bhuiya, Qing Ding, and Jr Kimani C. Toussaint, Plasmon-Assisted Audio Recording. Sci. Rep., 5 03/16/online 2015. http://dx.doi.org/10.1038/srep09125