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Rewritable and pH‐Sensitive Micropatterns Based on Nanoparticle “Inks”
Author(s) -
Wang Dawei,
Lagzi István,
Wesson Paul J.,
Grzybowski Bartosz A.
Publication year - 2010
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201001053
Subject(s) - nanoparticle , nanotechnology , stamping , materials science , computer science , metallurgy
Rewritable micropatterns based on nanoparticle “inks” are created in gel substrates by wet stamping. The colors of the patterns depend on pH, reflect the degree of nanoparticle aggregation, and can be written using acids and erased using bases. Micropatterns imprinted with salts are “permanent” but can change color upon pH changes; these patterns act as multiple‐use pH sensors.