| 摘要 |
An apparatus includes an electromagnetic signal device (712), a medium, and a sound wave generator (714). The sound wave generator (714) includes a carbon nanotube structure. The electromagnetic signal device (712) transmits an electromagnetic signal (720) to the carbon nanotube structure (714). The carbon nanotube structure (714) converts the electromagnetic signal (720) into heat. The heat transfers to the medium and causes a thermoacoustic effect. |
