nanoHUB-U Nanobiosensors L4.4: Selectivity - Noise Transducers





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Published on Feb 15, 2016

Table of Contents:
00:09 Lecture 4.4: Selectivity - Noise in Transducers
01:04 Outline
02:10 Selectivity issue due to biomolecules
04:29 Noise is also a Selectivity Problem
06:10 Noise in various lectures
07:16 Recall: Three types of sensors
08:45 Noise in Potentiometric Sensors
12:05 Noise in Amperometric Sensor
12:28 Noise in Cantilever Sensors
13:07 White noise and Pink Noise
14:28 Outline
14:30 Thermal (White) Noise in a Resistor
17:45 White noise from various sources
19:21 Origin of Pink Noise: Trapping/Detrapping
20:46 1/f noise
22:04 Example of 1/f noise
23:10 Outline
23:23 Selectivity: A problem of Information theory?
23:42 Resampling for improved SNR
25:13 White noise and Pink Noise
26:20 Signal averaging improves SNR dramatically
27:34 Conclusions

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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