nanoHUB-U Nanobiosensors L3.7: Sensitivity - Amperometric Sensors - Glucose Sensors I





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Published on Feb 19, 2014

Table of Contents:
00:09 Lecture 3.7: Amperometric Sensors - Glucose Sensors I
00:24 Three types of sensors
03:00 A short history of sensors
03:49 A glucose sensor
04:58 Basics of a amperometric sensor
08:17 Glucose sensing
09:17 Why amperometric sensors?
11:52 Outline
11:59 Let us start with the cell on the left
12:12 Spontaneous reaction
13:48 Spontaneous reaction and the driving force
14:51 Driving a motor by chemical energy
17:19 Forced oxidation-reduction
20:27 Electrolysis: forced oxidation-reduction
22:18 Outline
22:20 The issue of reference electrode
23:07 Without a Reference Electrode ...
23:41 The purpose of reference electrode
24:12 A three electrode cell
24:34 Outline
24:37 Current proportional to H2O2 concentration
27:18 Validation of H2O2 response
28:57 Conclusion

This video is part of the nanoHUB-U course "Principles of Electronic Nanobiosensors". (https://nanohub.org/courses/PEN)

This course provides an in-depth analysis of the origin of the extra-ordinary sensitivity, fundamental limits, and operating principles of modern nanobiosensors. The primary focus is the physics of biomolecule detection in terms of three elementary concepts: response time, sensitivity, and selectivity. And, it potentiometric, amperometric, and cantilever-based mass sensors to illustrate the application of these concepts to specific sensor technologies.

For more details see http://nanohub.org/u


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