Supercapacitive Admittance Tomoscopy

A sensor for measuring adsorption on a substrate has been designed including a contactless detection scheme, called supercapacitive admittance tomoscopy (SCAT). The sensor comprises a thin dielectric layer with two parallel band electrodes on the one side and a chemically modified surface on the other onto which the adsorption of molecules occurs. Upon application of a high frequency ac voltage between the two electrodes, a capacitive coupling is established across the dielectric layer, and the admittance measured depends on the surface state of the chemically modified interface. On the basis of this principle, a flow sensor has been developed to measure sensorgrams to follow the dynamics of the adsorption and has been tested for the adsorption of IgG on the modified surface.


Published in:
J. Am. Chem. Soc, 127, 38, 13300
Year:
2005
Laboratories:




 Record created 2005-11-07, last modified 2018-01-27

External link:
Download fulltext
Publisher's version
Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)