Table of Contents:
00:09 Lecture 2.6: Beating the Limits -- Droplet Evaporation
01:24 Outline
01:47 A 'Mendeleev Table' for bionsensors
02:41 Strategies to beat the diffusion limit
04:00 Biomimetics: Droplet on a leaf and coffee stain
06:33 Technology: Super-hydrophobic surfaces
08:57 Theory of droplet evaporation
13:17 Supersensitive droplet sensor
15:11 How to create a droplet: Basics
17:01 Derivation of Young's Equation
20:01 Corrugation improves hydrophobicity
21:33 Droplet evaporation enhances sensitivity
23:05 Geometry of diffusion & phase space of biosensors
23:39 Response time for various geometries
23:59 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
