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@ARTICLE{Quevedo:90874,
author = {Quevedo, W. and Peth, C. and Busse, G. and Scholz, M. and
Mann, K. and Techert, S. and DESY},
title = {{T}ime-resolved soft x-ray diffraction reveals transient
structural distortions of ternary liquid crystals},
journal = {International journal of molecular sciences},
volume = {10},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {PHPPUBDB-17381},
pages = {4754-4771},
year = {2009},
abstract = {Home-based soft X-ray time-resolved scattering experiments
with nanosecond time resolution (10 ns) and nanometer
spatial resolution were carried out at a table top soft
X-ray plasma source (2.2-5.2 nm). The investigated system
was the lyotropic liquid crystal
C(16)E(7)/paraffin/glycerol/formamide/IR 5. Usually, major
changes in physical, chemical, and/or optical properties of
the sample occur as a result of structural changes and
shrinking morphology. Here, these effects occur as a
consequence of the energy absorption in the sample upon
optical laser excitation in the IR regime. The liquid
crystal shows changes in the structural response within few
hundred nanoseconds showing a time decay of 182 ns. A
decrease of the Bragg peak diffracted intensity of $30\%$
and a coherent macroscopic movement of the Bragg reflection
are found as a response to the optical pump. The Bragg
reflection movement is established to be isotropic and
diffusion controlled (1 micros). Structural processes are
analyzed in the Patterson analysis framework of the
time-varying diffraction peaks revealing that the
inter-lamellar distance increases by 2.7 A resulting in an
elongation of the coherently expanding lamella crystallite.
The present studies emphasize the possibility of applying
TR-SXRD techniques for studying the mechanical dynamics of
nanosystems.},
cin = {HASYLAB(-2012) / FS-SCS},
ddc = {570},
cid = {$I:(DE-H253)HASYLAB_-2012_-20130307$ /
I:(DE-H253)FS-SCS-20131031},
pnm = {Facility (machine) DORIS/PETRA (POF1-DORIS-PETRA-20130405)},
pid = {G:(DE-H253)POF1-DORIS-PETRA-20130405},
experiment = {EXP:(DE-H253)DORISIII(machine)-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:20087463},
pmc = {pmc:PMC2808009},
UT = {WOS:000272191200008},
doi = {10.3390/ijms10114754},
url = {https://bib-pubdb1.desy.de/record/90874},
}