See if you can find the 8 differences in each set of images.
The night sky
Scanning electron microscope image of tin droplets on a textured ZnO:Al substrate. This is used for growing silicon nanowires for photovoltaic applications.
Soumyadeep Misra, LPICM-CNRS, École Polytechnique, France
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20170415145645-87485-mediumThumb-S0883769416001810_figu1g.jpg?pub-status=live)
June 2016 answer key
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20170415145645-94152-mediumThumb-S0883769416001810_figu2g.jpg?pub-status=live)
NiSb2
NiSb2 obtained by solid-state synthesis and used as a negative electrode for Na-ion batteries.
Claire Villevieille, Paul Scherrer Institute, Switzerland
Answers will be published in the October 2016 issue.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary-alt:20170415145645-72514-mediumThumb-S0883769416001810_figu3g.jpg?pub-status=live)