Method of inferring the existence of light by means of a measurement of the electrical characteristics of a nanotube bound with a dye, and detection arrangement

A method of inferring the existence of light by means of a measurement of the electrical characteristics of a nanotube bound to a dye comprises the following steps of: bringing a nanotube derivatized with a dye into contact with two conductor tracks; measuring an electrical parameter of the nanotube via the two conductor tracks without exposure to light; irradiating the dye bound to the nanotube with light; measuring the electrical parameter of the nanotube via the two conductor tracks with exposure to light; establishing the difference between the value of the electrical parameter which was measured without exposure to light and the corresponding parameter which was measured with exposure to light; inferring, as a function of the difference established, whether light is present.