Probe orientation and shielding can separate real buck-regulator output-voltage ripple from radiated switching noise.

High-frequency electrical nerve modulation employs kilohertz-range alternating currents or bursts to achieve reversible and local control of neural conduction. By exploiting biophysical interactions ...

Active metadevices integrated with semiconductors. (a) Hybrid silicon-metallic resonators for all-optical ultrafast active metamaterials. (b) Broadband metamaterial frequency switch with femtosecond ...