We deal here with three metastable systems: 1° – the dowser texture, 2° supertwisted cholesterics and 3° hypotwisted cholesterics. outline remarkable properties of tropisms texture stemming from its low symmetry, we show that, using setups called Dowsons Colliders, nematic monopoles can be nucleated, set into motion brought collisions in texture. Subsequently, point out that nucleation dislocat...