SURFACE PLASMON RESONANCE NANOLASERS
HARIPRASAD.K
S7B

OVERVIEW
INTRODUCTION
WHAT IS SPR?
SURFACE PLASMON SPECTROSCOPY
LASER BASICS
SPASER
THEORY OF SPASER
COMPARING LASER & SPASER
DEMONSTRATION OF SPASER
ADVANTAGES
APPLICATIONS
CONCLUSION & FUTURE SCOPE
REFERENCES



Introduction
Surface plasmons
oscillations of electrons
found in boundary b/w metal & dielectric
intensity max across the surface

How to excite a SP?
....etc

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At an interface between two transparent media of different refractive index (glass and water), light coming from the side of higher refractive index is partly reflected and partly refracted. Above a certain critical angle of incidence, no light is refracted across the interface, and total internal reflection is observed. While incident light is totally reflected the electromagnetic field component penetrates a short (tens of nanometers) distance into a medium of a lower refractive index creating an exponentially detenuating evanescent wave. If ....etc

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PRESENTED By:
Mohammad Hossein Banitaba


History of surface plasmon resonance
• Since its first observation by Wood in 1902 ,the physical phenomenon of surface plasmon resonance (SPR) has found its way into practical applications in sensitive detectors, capable of detecting sub-monomolecular coverage.
• Wood observed a pattern of ‘‘anomalous’’ dark and light bands in the reflected light, when he shone polarized light on a mirror with a diffraction grating on its surface.
• a complete explanat ....etc

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presented by:
Sanjay Vasoya


Nanoparticles for Nanomedicine
Targeted Delivery to Tumors
Many Different Length Scales
Relative Size of Nanoparticles
Making Gold Nanoparticles
Fluorophores and Drugs Selectively Dissociate Inside Cells
Control of Surface Charge
Investigating Delivery Using Cylindroids
Nanoparticles in Cylindroids
How Does Particle Charge Affect Tissue Penetration?
Engineering Approach:
Targeted Intratumoral Therapy
• Quantify tumor microenvironments
• Develop v ....etc

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Surface plasmon resonance
ABSTRACT

Surface plasmon resonance (SPR) is a phenomenon occurring at metal surfaces(typically gold and silver) when an incident light beam strikes the surface at a particular angle.Depending on the thickness of a molecular layer at the metal surface,the SPR phenomenon results in a graded reduction in intensity of the reflected light.Biomedical applications take advantage of the exquisite sensitivity of ....etc

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The effect of sub surface defects in surface roughness monitoring through ultrasonic flaw detector.
Objective
 To study the effect of sub surface defects in surface roughness monitoring through ultrasonic flaw detector.
 To study the sizing of defects.
Ultrasound Concepts
• All sound waves, whether audible or ultrasonic, are mechanical vibrations involving movement of the medium in which they are traveling. A sound wave may be transmitted through any material which behaves in an elastic manner.
....etc

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At an interface between two transparent media of different refractive index (glass and water), light coming from the side of higher refractive index is partly reflected and partly refracted. Above a certain critical angle of incidence, no light is refracted across the interface, and total internal reflection is observed. While incident light is totally reflected the electromagnetic field component penetrates a short (tens of nanometers) distance into a medium of a lower refractive index creating an exponentially detenuating evanescent wave. If ....etc

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Charged Magnetic Nanoparticles for enhancing gene transfection
Presented By
O.A.NAZEER HUSSAIN
S7 AE&I
College Of Engineering, Trivandrum
2007-11 batch



Overview
Introduction
Experiments
Results
Discussion
Conclusion
Introduction
Gene Transfection
Deliberately introducing nucleic acids into cells.
“Infection by transformation”

Viral methods
Carrier Viruses.
‘Virus Transduction’.




Non-Viral methods
Chemical based transfe ....etc

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ABSTRACT

Surface plasmon resonance (SPR) is a phenomenon occurring at metal surfaces(typically gold and silver) when an incident light beam strikes the surface at a particular angle.Depending on the thickness of a molecular layer at the metal surface,the SPR phenomenon results in a graded reduction in intensity of the reflected light.Biomedical applications take advantage of the exquisite sensitivity of SPR to the refractive index of the medium next to the metal surface, which makes it possible to measure accurately the adsorption of molecul ....etc

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please send me material, related to separation of nanoparticles from an airstream , i urgently need the material for my seminars. it will be very grateful of you. My emailid is [email protected] ....etc

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