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    Fakultätskolloquium / Colloquium of the Faculty of Engineering, Prof. Janata, Georgia Institute of Science and Technology

    Startdatum: 20.09.2018
    Startzeit: 16:00
    Stoppzeit: 17:30

    Beschreibung: 

    Dear colleagues, students & friends of the Faculty of Engineering,

    Dean Prof. Oliver Paul and Prof. Margit Zacharias would like to cordially invite you to the colloquium of the Faculty of Engineering:

    Prof. Jiri Janata
    School of Chemistry and Biochemistry, Georgia Institute of Science and Technology
    Title:  "INTEGRATED ELECTRONICS IN CHEMICAL ANALYSIS"

    Date: Thursday, September 20, 2018
    Time: 16:00 (s.t.)
    Place: Faculty of Engineering, Georges-Köhler-Allee 101, 79110 Freiburg,
    Building 101, Room 02 016/18 (2nd floor)

    Abstract
    Integration of chemical recognition elements with solid state electronic devices has been subject of intense interest for over four decades, with some notable achievements achieved in electroanalytical chemistry. Initially, the “chemistry” has been added to more or less conventional silicon electronics with advantages in miniaturization, noise reduction and promise of multivariate analysis. That was the era of chemically sensitive field-effect transistors (CHEMFET), i.e. ion-sensitive field-effect transistors and enzymatic field-effect transistors (ENFET). Later, it has been recognized that modulation of electronic properties of organic semiconductors leads to creation of solid state work function sensors for gases, again based on the conventional silicon platform.
    All chemically sensitive silicon based CHEMFETs are high input impedance potentiometric sensors. In such case the transistor current passes only through silicon, which is protected from the environment by nearly ideal passivation with silicon dioxide/silicon nitride. The corollary of this fact is that WF of silicon does not change and the WF-FET sensors do not require separate reference electrode.

    Presenter
    Jiri Janata is Professor Emeritus in the School of Chemistry and Biochemistry, Georgia Institute of Science and Technology. Between 1991 and 1997 he was an Associate Director of Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, in Richland, Washington. Prior to that appointment he was Professor of Materials Science and Professor of Bioengineering at the University of Utah for 17 years.
    He was born in Czechoslovakia where he received his Ph.D. degree in analytical chemistry from the Charles University (Prague) in 1965. His current interests include interfacial chemistry, chemical sensors with particular emphasis on development of atomic metal clusters. Web: http://www.chemistry.gatech.edu/faculty/janata/janata.html

    We are looking forward to meeting you!

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