Title :
Instrumentation with attoFarad resolution for electrochemical impedance measurements on molecular biosensors
Author :
Carminati, Marco ; Sampietro, Marco ; Ferrari, Giorgio ; Gozzini, Fabio
Author_Institution :
Dipt. di Elettron. e Inf., Politec. di Milano, Vinci, Italy
Abstract :
Sub-attoFarad capacitance resolution is experimentally reached, demonstrating the suitability of the proposed instrumentation for the development of impedimetric molecular biosensors. The modular design of the system is illustrated along with novel analog solutions (providing high sensitivity over a DC-1MHz bandwidth), digital lock-in elaboration techniques and their impact on the final instrument resolution.
Keywords :
biosensors; capacitance; electric impedance measurement; attoFarad resolution; capacitance resolution; digital lock-in elaboration; electrochemical impedance measurements; impedimetric molecular biosensors; instrument resolution; Bandwidth; Biosensors; Capacitance; Feedback; Frequency; Impedance measurement; Instruments; Nanobioscience; Signal design; Signal resolution;
Conference_Titel :
Research in Microelectronics and Electronics, 2009. PRIME 2009. Ph.D.
Conference_Location :
Cork
Print_ISBN :
978-1-4244-3733-7
Electronic_ISBN :
978-1-4244-3734-4
DOI :
10.1109/RME.2009.5201360
