title: Stimuli responsive release of metalic nanoparticles on semiconductor substrates.
abstract: Optically active metal nanoparticles have been of recent and broad interest for applications to biomarker detection because of their ability to enable high sensitivity enhancements in various optical detection techniques. Here, we report stimuli responsive release of metallic nanoparticles on a semiconductor thin film array structure based on pH change. The metallic nanoparticles are obtained by a simple redox procedure on the semiconductor surface. This approach allows controlling nanoparticle surface coatings in situ for biomolecule conjugation, such as DNA probes on nanoparticles, and rapid stimuli responsive release of these nanoparticles upon pH change.
authors.affiliation: Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
authors.forename: Miguel
authors.initials: M
authors.lastname: Santiago-Cordoba
authors.forename: Özge
authors.initials: Ö
authors.lastname: Topal
authors.forename: David L
authors.initials: DL
authors.lastname: Allara
authors.forename: A Kaan
authors.initials: AK
authors.lastname: Kalkan
authors.forename: Melik C
authors.initials: MC
authors.lastname: Demirel
mesh_terms: D001483:Base Sequence; D015342:DNA Probes / Q000737:chemistry / Q000235:genetics; D055029:Inverted Repeat Sequences; D053768:Metal Nanoparticles / Q000737:chemistry*; D012666:Semiconductors; D012834:Silver / Q000737:chemistry
chemical_list: D015342:DNA Probes; D012834:Silver