Contact Info

Adam P. Hitchcock

Canada Research Chair

in Materials Research
CLS-CCRS
B.I.M.R
McMaster University
Hamilton, ON
Canada L8S 4M1
V: +1 905 525-9140
    x24729
F: +1 905 521-2773
E: aph@mcmaster.ca
U: unicorn.mcmaster.ca
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4D IMAGING OF ZnO / Al2O3 AEROGELS

WHO:  Juan Wu, Xiaohui Zhu, Adam Hitchcock, Chemistry &Chemical Biology, BIMR, McMaster University; D.A. Shapiro (ALS, LBNL); J.R.I. Lee, T. van Buuren, M.M. Biener, S.A Gammon, T.T Li, T.F. Baumann (LLNL)

WHERE:  Advanced Light Source, 5.3.2.1 Nanosurveyor I (ptychography)
                  Canadian Light Source Scanning Transmission X-ray Microscope (STXM)
 
WHEN: Nov 2016, Mar 2017                        POSTED:  20 July 2017

WHAT: STXM and ptychographic spectro-tomography of ZnO/Al2O3 aerogels

Aerogels are ultra low density (0.04 g/cm3) which can act as porous supports, filters, etc. When coated with catalytically active materials such as ZnO, they can for a tunable functional material. Chemical mapping in 3D is needed to provide feedback on processes such as atomic layer deposition (ALD) that are used to functionalize aerogels. In collaboration with scientists at LLNL and LBNL, we have applied scanning transmission X-ray microcopy (STXM) and ptychography spectro-tomography to perform 4D imaging of ZnO/Al2O3 aerogels. The figure compares volume renderings of the STXM and ptychography spectro-tomo results. 2D ptychography resolution of 14 nm was achieved.

OTHER INFORMATION: Movie of the ptychography aerogel 4D imaging.

Publication: in preparation

 

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