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Titolo:
Capacitive biosensors
Autore:
Berggren, C; Bjarnason, B; Johansson, G;
Indirizzi:
Univ Lund, Ctr Chem, Dept Analyt Chem, S-22100 Lund, Sweden Univ Lund Lund Sweden S-22100 em, Dept Analyt Chem, S-22100 Lund, Sweden
Titolo Testata:
ELECTROANALYSIS
fascicolo: 3, volume: 13, anno: 2001,
pagine: 173 - 180
SICI:
1040-0397(200103)13:3<173:CB>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
SELF-ASSEMBLED MONOLAYERS; SURFACE-PLASMON RESONANCE; GOLD ELECTRODES; STRUCTURAL CHARACTERIZATION; IMPEDIMETRIC IMMUNOSENSOR; ALKANETHIOL MONOLAYERS; IMPEDANCE ANALYSIS; DNA HYBRIDIZATION; THIOL MONOLAYERS; ANTIBODY;
Keywords:
immunosensors; DNA biosensors; nucleic acids; non-labeled analytes; capacitance; impedance; self-assembly;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Berggren, C Univ Lund, Ctr Chem, Dept Analyt Chem, POB 124, S-22100 Lund, Sweden Univ Lund POB 124 Lund Sweden S-22100 4, S-22100 Lund, Sweden
Citazione:
C. Berggren et al., "Capacitive biosensors", ELECTROANAL, 13(3), 2001, pp. 173-180

Abstract

Work on a new type of biosensor, in which changes in the dielectric properties of an electrode surface are detected, started during the late 80s. Thebinding of an analyte to an immobilized affinity element can be detected directly without the need for a label or an indicating reaction. The changescan be determined by measuring the electrical capacitance or impedance either by using interdigitated electrodes or more commonly by potentiostatic methods. Capacitive biosensors have been used for detection of antigens, antibodies, proteins, DNA fragments and heavy metal ions. Extremely low detection limits, down below 10(-15) M, have been reached with plugged, self-assembled recognition layers.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 13:18:13