CHEN 1000 Nanotech lecture 7 notes

CHEN 1000 Nanotech lecture 7 notes - NOTD NOTD In Lean...

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1 NOTD In Lean Times, Biotech Grains Are Less Taboo By Andrew Pollack (Published: April 21, 2008) Soaring food prices and global grain shortages are bringing new pressures on governments, food companies and consumers to relax their longstanding resistance to genetically engineered crops. In Japan and South Korea, some manufacturers for the first time have begun buying genetically engineered corn for use in soft drinks, snacks and other foods. Until now, to avoid consumer backlash, the companies have paid extra to buy conventionally grown corn. But with prices having tripled in two years, it has become too expensive to be so finicky. In the United States, wheat growers and marketers, once hesitant about adopting biotechnology because they feared losing export sales, are now warming to it as a way to bolster supplies…Even in Europe, where opposition to what the Europeans call Frankenfoods has been fiercest, some prominent government officials and business executives are calling for faster approvals of imports of genetically modified crops. Thanks to Caitlin Wren Biomineralization • Many organisms need “hard” parts to provide protection or structural support. • However, not many materials are available, mostly ceramics like calcium phosphate or calcium carbonate. • To make this limited selection of materials perform many functions, organisms create nanocomposite materials using ceramic particles in conjunction with organic molecules. • This is an example of “templating.” The molecules self-organize to directs the growth of the ceramic particles. Clicker Question Which of the following is NOT an example of templating ? A: using a stencil to print neat letters on a sign.
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CHEN 1000 Nanotech lecture 7 notes - NOTD NOTD In Lean...

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