title: Ion detection with photonic crystal microcavities.
abstract: We have experimentally demonstrated a cation and anion sensor by using short linear photonic crystal microcavities with an embedded quantum dot active region. The photonic crystal microcavity covered with an ion-selective polymer forms a submicrometer optical detection system sensitive to small changes of perchlorate anion (ClO4(-)) and calcium cation (Ca2+) concentrations.
authors.affiliation: Solid State Electronics Laboratory, Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan 48109-2122, USA. chakrast@eecs.umich.edu
authors.forename: S
authors.initials: S
authors.lastname: Chakravarty
authors.forename: J
authors.initials: J
authors.lastname: Topol'ancik
authors.forename: P
authors.initials: P
authors.lastname: Bhattacharya
authors.forename: S
authors.initials: S
authors.lastname: Chakrabarti
authors.forename: Y
authors.initials: Y
authors.lastname: Kang
authors.forename: M E
authors.initials: ME
authors.lastname: Meyerhoff