
- •Lecture 2.1: Shape of a Surface
- •Outline
- •Nanobiosensors have high sensitivity
- •Geometry is Important, but exactly how ?
- •Basic concepts: dimension of a surface
- •Classification of surfaces
- •Example: Regular 1D fractals
- •Regular and irregular 1D fractals
- •Dimension of quasi-2D Fractal
- •Same DF, but different geometry
- •Dimension of a irregular fractal surface
- •Irregular to regular surfaces
- •Outline
- •Settling time defines the fundamental limits of detection (Lectures 5-10)
- •Sensitivity defines transducer-specific limits of detection (Lectures 11-22)
- •Selectivity defines the practical limits of detection (Lectures 22-30)
- •Geometry is the key for nanobiosensing
- •Conclusions

Principles of Electronic Nanobiosensors
Unit 2: Settling Time
Lecture 2.1: Shape of a Surface
By Muhammad A. Alam
Professor of Electrical and Computer Engineering Purdue University
alam@purdue.edu
1
Outline
•Recap of lecture 1.3
•Shape of a object described by fractals
–Regular fractals
–Irregular fractals
•Outline of the course
•Summary and conclusion
Alam, Principles of Nanobiosensors, 2013 |
2 |

Nanobiosensors have high sensitivity
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Is there something fundamental about the geometry?
Alam, Principles of Nanobiosensors, 2013 |
3 |

Geometry is Important, but exactly how ?
Berg, 1963
Geometry of electrostatics |
Geometry of diffusion |
Alam, Principles of Nanobiosensors, 2013 |
4 |