A process for preparing N-acyl, N-sulfonyl and N-phosphoryl substituted isoserine esters in which a metal or an ammonium alkoxide is reacted with a -lactam. The filling tube has a closed end and a plurality of orifices defined in the tube radially. The seed layer includes first, second, and third portions. In one embodiment the nanoparticles comprise a plurality of nanosilver fibers braided, woven or otherwise interwoven to form at least a portion of the primary section. The phase difference between any two successive symbols after modulation is less than or equal to \u03c02. Each of the plurality of stages generates multi signals for diving a pixel circuit of a display device.