The present invention relates to a reflective communication system that allows information from wireless communication devices, such as radio-frequency identification devices, to be reflectively communicated to a receiver in lieu of using a separate communication system. Specifically, the pre-spreading device has an opening therein such that a distance between the opening and the outer periphery of the pre-spreading device forms a shelf to direct grain toward the opening to provide a uniform distribution of the grain. In one embodiment, the hollow cubes can be formed from an emulsion having aqueous droplets with an interfacial layer encasing an aqueous core. Through this approach, the problems associated with the convolution of a finite laser beam with a desired profile for a microlens are overcome.