The invention is a method of training grapevines comprising dividing fruiting canes into three horizontal zones and two vertical zones. CdS nanoparticles formed in the presence of an amine-terminated dendrimer show blue emission. The light distribution device has at least one optical modulation device having a two-dimensional array of individual elements that can be controlled individually in order to change the angular distribution of the light incident on the optical modulation device. A sense and measurement coil, which is fabricated on the same substrate as the inductor, provides the capability to measure the magnetic field or flux produced by the inductor.