Chemical Peels For Molecular Films | September 24, 2012 Issue - Vol. 90 Issue 39 | Chemical & Engineering News
 
 
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Volume 90 Issue 39 | p. 8 | News of The Week
Issue Date: September 24, 2012

Chemical Peels For Molecular Films

Lithography: Method generates patterned arrays by yanking molecules from surfaces
Department: Science & Technology
News Channels: Nano SCENE, Materials SCENE
Keywords: soft lithography, molecular arrays, chemical patterning, alkanethiols

A new method peels molecules off surfaces to create patterned arrays, rather than printing them onto surfaces as in conventional soft lithography (Science, DOI: 10.1126/science.1221774).

By removing patches of molecules, the technique can generate molecular arrays with 40-nm features. That resolution is higher than is possible with many soft lithography techniques, which add molecules to surfaces. Furthermore, compounds printed onto bare substrates by conventional methods tend to spread, . . .

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