The intense beams of X-ray light at the user facilities operated by the PSI Center for Photon Science shed light on the smallest structures of matter.
Lab News & Scientific Highlights
Antiferrodistortive and ferroeletric phase transitions in freestanding films of SrTiO3
Epitaxially grown thin films are commonly used to strain engineer electronic properties by the choice of a substrate, and therefore do not match bulk properties (leading to properties that deviate from the bulk material). Free standing ultrathin oxide films are expected to preserve the bulk-like properties due to the absence of substrate influence. However, we show that this expectation is not fulfilled with ultrathin free standing SrTiO3, as they get ferroelectric at 80K.
Mapping the Nanoscale Architecture of Functional Materials
A new X-ray technique reveals the 3D orientation of ordered material structures at the nanoscale, allowing new insights into material functionality.
Déchiffrer l’énigme des protéines
Cette année, le prix Nobel de chimie est attribué à trois chercheurs qui ont contribué de manière déterminante à déchiffrer le code des protéines, ces importants éléments constitutifs de la vie. Mais pour que des applications puissent être développées à partir de ces connaissances, par exemple dans le domaine médical, des centres de recherche comme le PSI sont indispensables.