The invention relates to an optical waveguide device that includes a waveguide phase modulator. The present invention first receives the data. Also disclosed is a method of detecting reactive antibodies in serum by contacting serum with cells modified to incorporate a peptide-lipid construct, where the peptide is an epitope of the antibody, and determining the degree of aggluthination of the cells. The PL material absorbs a portion of the first EM radiation emitted by the organic EL material and emits a second EM radiation having a second spectrum. The present disclosure also provides a method for converting a non-NFC device to a device having NFC capability.