For pt. I see ibid., vol. 50, no. 7, p. 857 (2003). A new method for directional velocity estimation is investigated through a number of flow rig measurements. The method uses beam-formation along the ...

Conventional light-emitting diodes (LEDs) always pursue the high brightness required for solid-state lighting. However, they always exhibit very low frequency bandwidth of tens MHz. In this letter, we ...