Abstract: A microfluidic device comprising: —a first wall comprising a first substrate on which a plurality of closed patterns is grafted, —a second wall, facing the first wall, comprising a second substrate, —a plurality of nucleic acids grafted either on the first substrate or on the second substrate, wherein each nucleic acid comprises a barcode that encodes the position of the nucleic acid on said first or second substrate, wherein at least the plurality of closed patterns or the second substrate is made of an actuatable hydrogel which is swellable between a retracted state and a swollen state in which the closed patterns and the second substrate come into contact.

Abstract: The box has a cover (2) and a base (1) with internal supports (25) positioning the optical fibers of splitters circumferentially; a support (24a/24b) for an unbalanced optical splitter (242) and a support (24a/24b) for a balanced optical splitter (241); and a support (26) for a set (23) of optical adapters for connectors (230) of optical cables, comprising an adapter for an optical signal input, an adapter for re-distributing the optical signal, and adapters for feeding the optical signal to a consumer unit, in which the unbalanced splitter (242) is fed by the optical signal input connector generating: an optical signal of greater power, feeding the optical signal redistribution connector; an optical signal of lesser power feeding the balanced optical splitter (241) that orients the split optical signals to the supply connectors of a consumer unit.