Nanoacoustics Comes Quietly [Guest Editorial]

In this special issue, four articles were gathered to report and review recent developments in nanoacoustics. Specifically, Li et al. present the development of a new low-cost and portable nanophotonic sensor to measure mechanical or environmental quantities, such as acoustic, bending, stretching, or temperature changes, suggesting the potential of nanoacoustics for wearable, portable electronics for applications in the Internet of Things.