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Technique de réalisation/Apport scientifique :

The image showcases a distinct, bright, and textured track running horizontally across a smooth, dark background. This central track is the path irradiated by the laser. Within this path, you can clearly see numerous small, elongated microcrystals. A key feature is the remarkable orientation of these crystals. They are not randomly arranged but form a repeating, V-shaped pattern along the entire length of the track. This organized structure strongly suggests that the crystals grew in a controlled manner, following the direction of the moving laser beam. The edges of the main track are slightly diffuse, with a fine, powder-like scatter of material, indicating the energetic and highly localized nature of the laser-matter interaction. The overall image powerfully illustrates the process of solvent-free laser-induced crystallization, transforming the glycine into an ordered, crystalline state precisely along the laser’s path.

Descriptif technique :

Direct crystallization of alpha-glycine induced by a femtosecond laser.

Provenance : Institut de Chimie Moléculaire et des Matériaux (ICMMO), Université Paris Saclay.