Demonstration of Feasibility of X-Ray Free Electron Laser Studies of Dynamics of Nanoparticles in Entangled Polymer Melts

The recent advent of hard x-ray free electron lasers (XFELs) opens new areas of science due to their exceptional brightness, coherence and time structure. In principle, such sources enable studies of dynamics of condensed matter systems over times ranging from femtoseconds to seconds. However, the s...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Scientific reports 2014-08, Vol.4 (1), p.6017-6017, Article 6017
Hauptverfasser: Carnis, Jerome, Cha, Wonsuk, Wingert, James, Kang, Jinback, Jiang, Zhang, Song, Sanghoon, Sikorski, Marcin, Robert, Aymeric, Gutt, Christian, Chen, San-Wen, Dai, Yeling, Ma, Yicong, Guo, Hongyu, Lurio, Laurence B., Shpyrko, Oleg, Narayanan, Suresh, Cui, Mengmeng, Kosif, Irem, Emrick, Todd, Russell, Thomas P., Lee, Hae Cheol, Yu, Chung-Jong, Grübel, Gerhard, Sinha, Sunil K., Kim, Hyunjung
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The recent advent of hard x-ray free electron lasers (XFELs) opens new areas of science due to their exceptional brightness, coherence and time structure. In principle, such sources enable studies of dynamics of condensed matter systems over times ranging from femtoseconds to seconds. However, the studies of “slow” dynamics in polymeric materials still remain in question due to the characteristics of the XFEL beam and concerns about sample damage. Here we demonstrate the feasibility of measuring the relaxation dynamics of gold nanoparticles suspended in polymer melts using X-ray photon correlation spectroscopy (XPCS), while also monitoring eventual X-ray induced damage. In spite of inherently large pulse-to-pulse intensity and position variations of the XFEL beam, measurements can be realized at slow time scales. The X-ray induced damage and heating are less than initially expected for soft matter materials.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep06017