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@PHDTHESIS{Roedig:331060,
author = {Roedig, Philip},
othercontributors = {Weckert, Edgar and Chapman, Henry N.},
title = {{A} {N}ew {F}ixed-{T}arget {A}pproach for {S}erial
{C}rystallography at {S}ynchrotron {L}ight {S}ources and
{X}-ray {F}ree {E}lectron {L}asers},
school = {Universität Hamburg},
type = {Dr.},
address = {Hamburg},
publisher = {Verlag Deutsches Elektronen-Synchrotron},
reportid = {PUBDB-2017-07483, DESY-THESIS-2017-027},
series = {DESY-THESIS},
pages = {185},
year = {2017},
note = {Universität Hamburg, Diss., 2016},
abstract = {In the framework of this thesis, a new method for
high-speed fixed-target serial crystallography experiments
and its applicability to biomacromolecular crystallography
at both synchrotron light sources and X-ray free electron
lasers (XFELs) is presented. The method is based on a sample
holder, which can carry up to 20,000 microcrystals and which
is made of single-crystalline silicon. Using synchrotron
radiation, the structure of Operophtera brumata cytoplasmic
polyhedrosis virus type 18 polyhedrin, lysozyme and cubic
insulin was determined by collecting X-ray diffraction data
from multiple microcrystals. Data collection was shown to be
possible at both cryogenic and ambient conditions. For
room-temperature measurements, both global and specific
indications of radiation damage were investigated and
characterized. Due to the sieve-like structure of the chip,
the microcrystals tend to arrange themselves according to
the micropore pattern, which allows for efficient sampling
of the sample material. In combination with a high-speed
scanning stage, the sample holder was furthermore shown to
be highly suitable for serial femtosecond crystallography
experiments. By fast raster scanning of the chip through the
pulsed X-ray beam of an XFEL, structure determination of a
virus, using the example of bovine enterovirus type 2, has
been demonstrated at an XFEL for the first time. Hit rates
of up to $100\%$ were obtained by the presented method,
which refers to a reduction in sample consumption by at
least three orders of magnitude with respect to common
liquid-jet injection methods used for sample delivery. In
this way, the typical time needed for data collection in
serial femtosecond crystallography is significantly
decreased. The presented technique for sample loading of the
chip is easy to learn and results in efficient removal of
the surrounding mother liquor, thereby reducing the
generated background signal. Since the chip is made of
single-crystalline silicon, in principle no diffuse
background contribution is caused by the chip itself.},
cin = {FS-PS},
cid = {I:(DE-H253)FS-PS-20131107},
pnm = {6215 - Soft Matter, Health and Life Sciences (POF3-621)},
pid = {G:(DE-HGF)POF3-6215},
experiment = {EXP:(DE-MLZ)External-20140101},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)29 / PUB:(DE-HGF)11},
doi = {10.3204/PUBDB-2017-07483},
url = {https://bib-pubdb1.desy.de/record/331060},
}