Rich Dynamics in Diblock Copolymers

2004 ◽  
Vol 856 ◽  
Author(s):  
G. Fytas
Keyword(s):  
Phase Diagram ◽  
Structure Factor ◽  
Diblock Copolymers ◽  
Photon Correlation Spectroscopy ◽  
Dynamic Structure ◽  
High Molecular Mass ◽  
Correlation Spectroscopy ◽  
Dynamic Structure Factor ◽  
Photon Correlation ◽  
Composition Fluctuations

ABSTRACTThe dynamic structure factor S(q, t) of ultra-high molecular mass diblock copolymers BC in a common solvent was systematically investigated by photon correlation spectroscopy in different regimes of the phase diagram. Through proper probing of the composition fluctuations in symmetric and asymmetric BC the different relaxation mechanisms were identified and the influence of the disorder to order (ODT) transition was assessed. In the disordered regime, S(q, t) sensitively depends on the composition polydispersity of BC and the proximity to ODT complementing the real phase morphology of BC. The dynamic response of BC is therefore predictable.

Dynamic Structure Factor of Diblock Copolymers in the Ordering Regime

1997 ◽  
Vol 30 (20) ◽  
pp. 6280-6294 ◽  
Author(s):  
A. N. Semenov ◽  
S. H. Anastasiadis ◽  
N. Boudenne ◽  
G. Fytas ◽  
M. Xenidou ◽  
...  
Keyword(s):  
Structure Factor ◽  
Diblock Copolymers ◽  
Dynamic Structure ◽  
Dynamic Structure Factor

scholarly journals Hard X-Ray Photon Correlation Spectroscopy Methods for Materials Studies

2018 ◽  
Vol 48 (1) ◽  
pp. 167-190 ◽  
Author(s):  
Alec R. Sandy ◽  
Qingteng Zhang ◽  
Laurence B. Lurio
Keyword(s):  
Photon Correlation Spectroscopy ◽  
Condensed Matter ◽  
Dynamic Structure ◽  
Correlation Spectroscopy ◽  
Fourth Generation ◽  
Photon Correlation ◽  
X Ray ◽  
The Past ◽  
Materials Research ◽  
The Impact

Understanding and designing sophisticated new materials require measurements of not only their average structural properties but also their dynamic behavior. X-ray photon correlation spectroscopy (XPCS) provides this information by characterizing fluctuations in condensed matter across a broad range of length scales and timescales. Over the past two decades, XPCS has provided a wide variety of results in the study of materials properties. In this review, we provide an overview of coherence, photon correlation spectroscopy, and the dynamic structure factor as well as information on the mechanics of XPCS experiments. We highlight the impact that this infrastructure has had on materials research and the bright future that is forthcoming with the anticipated upgrade of many third-generation synchrotron sources to fourth-generation multibend achromat sources.

Dynamic structure factor of homogeneous diblock copolymers solutions

2002 ◽  
Vol 183 (1) ◽  
pp. 185-190
Author(s):  
P. Holmqvist ◽  
S. Pispas ◽  
N. Hadjichristidis ◽  
G. Fytas
Keyword(s):  
Structure Factor ◽  
Diblock Copolymers ◽  
Dynamic Structure ◽  
Dynamic Structure Factor

Dynamic Structure Factor of Diblock Copolymers Solutions in the Disordered State. 3. The Non-Mean-Field Regime

2003 ◽  
Vol 36 (3) ◽  
pp. 830-838 ◽  
Author(s):  
P. Holmqvist ◽  
S. Pispas ◽  
N. Hadjichristidis ◽  
G. Fytas ◽  
R. Sigel
Keyword(s):  
Structure Factor ◽  
Diblock Copolymers ◽  
Mean Field ◽  
Dynamic Structure ◽  
Dynamic Structure Factor ◽  
Mean Field Regime

scholarly journals Single Chain Dynamic Structure Factor of Linear Polymers in an All-Polymer Nano-Composite

2016 ◽  
Vol 49 (6) ◽  
pp. 2354-2364 ◽  
Author(s):  
Arantxa Arbe ◽  
José A. Pomposo ◽  
Isabel Asenjo-Sanz ◽  
Debsindhu Bhowmik ◽  
Oxana Ivanova ◽  
...  
Keyword(s):  
Structure Factor ◽  
Dynamic Structure ◽  
Dynamic Structure Factor ◽  
Linear Polymers ◽  
Single Chain ◽  
Nano Composite ◽  
Chain Dynamic
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