Table of Contents:
00:09 Lecture 4.2: Selectivity - Physics of Sequential Adsorption
01:05 Classical approach to selectivity
02:47 Selectivity classified
04:02 Outline
04:27 100% surface coverage is impossible
06:50 Even after long incubation, surface coverage is suboptimal
08:52 Outline
08:53 1D sensor surface: Classical adsorption
11:21 Asymptotic limits of 1D RSA
13:26 Derivation: Time-dependent RSA
15:46 Derivation: Time-dependent RSA in 1D
17:38 Time-dependence RSA in 1D
18:40 Continuum vs. lattice
19:58 Outline
19:59 Time-dependent RSA on 2D surfaces
20:50 Surface coverage and passivation
22:41 Spatial notion of selectivity
24:00 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
