Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low dose X-ray speckle visibility spectroscopy reveals nanoscale
  dynamics in radiation sensitive ionic liquids   X-ray radiation damage provides a serious bottle neck for investigating
{\mu}s to s dynamics on nanometer length scales employing X-ray photon
correlation spectroscopy. This limitation hinders the investigation of real
time dynamics in most soft matter and biological materials which can tolerate
only X-ray doses of kGy and below. Here, we show that this bottleneck can be
overcome by low dose X-ray speckle visibility spectroscopy. Employing X-ray
doses of 22 kGy to 438 kGy and analyzing the sparse speckle pattern of count
rates as low as 6.7x10-3 per pixel we follow the slow nanoscale dynamics of an
ionic liquid (IL) at the glass transition. At the pre-peak of nanoscale order
in the IL we observe complex dynamics upon approaching the glass transition
temperature TG with a freezing in of the alpha relaxation and a multitude of
milli-second local relaxations existing well below TG. We identify this fast
relaxation as being responsible for the increasing development of nanoscale
order observed in ILs at temperatures below TG.

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The categories of this paper are: physics
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
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The categories of this paper are: math
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an