Optical Sensors
Indian Institute of Technology Roorkee and NPTEL via Swayam
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Overview
INTENDED AUDIENCE : Physics, Nanotechnology, Biosciences, Electrical Engineering, Electrooptic Engineering, PhotonicsPREREQUISITES : Basic knowledge of Optics (Geometrical optics, Interference, Diffraction, polarization, etc.)INDUSTRY SUPPORT : Photonic Sys
Syllabus
COURSE LAYOUT
Week 1 : Lecture 1: Introduction to sensors and biosensors:Characteristics and components of optical biosensors,varioustransduction mechanisms, Optical probing parameters Lecture 2: Performance parameters, Fabrication and functionalization methods of optical biosensors Lecture 3: Basic optics for optical biosensing-I:Electromagnetic waves in free space: –Maxwell’s equations,
EM Wave equations, Power density, Polarization, ScatteringWeek 2 : Lecture 4: Basic optics for optical biosensing-II: Electromagnetic waves in matter Dielectrics, Reflection
and transmission at interface: Fresnel equations, Polarization by reflection – Brewster angle sensor Lecture 5: Basic optics for optical biosensing-III: Electromagnetic waves in matter Total internal reflection- TIR sensors,
Evanescent wave sensing, factors affecting performance, importance of penetration depth, waveguide sensors using TIR Lecture 6: Basic optics for optical biosensing-IV: Electromagnetic waves in matter Absorption and dispersion,
conductors: Drude model for the metal dielectric function and introduction to plasmonsWeek 3 : Lecture 7: Plasmonic sensors: Propagating versus localized plasmons, Optimized sensor configurations, Electromagnetic
field enhancements, plasmon enhanced sensors Lecture 8: Basic optics for optical biosensing-V: Interference and diffraction Interference and interferometry, Airy function for
single layer, Mach Zehnder Interferometer for sensing, Fabry Perot Interferometer for sensing.Week 4 : Lecture 9: Review of biomaterial optics:Biomaterial Structures EM Waves Absorption in Tissue, Chirality, polarization
rotation and dichroism, Lecture 10: Review of sensing applications: Scattering–Elastic (Rayleigh), –Inelastic (Raman); Fluorescence, Some real life
optical biosensors, Sensing at terahertz.
Taught by
Prof. Sachin Kumar Srivastava
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