Nano birds in the sky
Colorized and rotated scanning electron micrograph of cadmium oxide nanosheets deposited on a silicon substrate. Several nanosheets are agglomerated, and look like birds flying in the sky. The nanosheets are formed by a vapor-solid process using CdO powder as a source with Ar flow at an elevated temperature.
Jaebum Joo
Answers will be in the February 2012 issue.
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October 2011 answer key
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