prof.
Paul E. Laibinis del Dept of Chemical Engineering del Massachusetts Institute
of Tecnology (USA),
Tailoring Surfaces for
Adsorption of Halides, DNA and Other Species.
New Approaches for
Chemical Sensing and Delivery.
The use of self-assembly at surfaces has
provided a powerful method for tailoring a variety of interfacial
properties. This talk will present new
approaches for generating sensors and manipulating fluidic delivery by using
adsorption events involving ions, small molecules, and pieces of DNA. For these various processes, the chemical
tailoring of surface at the nanoscopic level is required for providing these
functions. By the discussed methods, we
are able to generate a halide sensor that employs a monoatomic metal coating
for its operation, controllably move microliter-size drops on surfaces by an
acid-base reaction, and provide a new means for attaching oligonucleotides to
surfaces as end-linked strands by a base pairing process.