An optical interferometric measuring instrument comprises a laser light source 12, an interferometer portion 14, a reflecting mirror 20, a bellows driving carriage 30, and a fixed portion 34. Carbon nanomaterials are stabilized and uniformly dispersed in a solvent and mechanically mixed with conductive silver ink. A polymer and a carbon nanotube are dispersed in a dispersion medium and on a filled liquid in a Langmuir trough, to obtain a carbon nanotube-based structure constituted of a carbon nanotube and the polymer wound around its rounded surface. A communications server computer coupled to the communications network for communicating the fact that the data on the server has been updated by communicating a client to client message from the client computer that updated the data on the data server computer to other client computers thereby prompting said other client computers to request updated data from the data server computer.