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Optical Fiber communication
Optical Fiber communication

... that allows total internal reflection of light through the core. The index of the cladding is less than 1%, lower than that of the core. Light injected into the Fiber and striking core to cladding interface at greater than the critical angle, reflects back into core, since the angle of incidence and ...
Week4-figs
Week4-figs

... Historical Development: Ray Optics → Wave Optics → EM Optics → Quantum Optics. • Ray Optics is an approximation of Wave Optics in which wavelength short compared to other dimensions (focal lengths, diameter of optical components, etc.) so that Diffraction can be ignored. ...
Light -1 - Physics
Light -1 - Physics

... All objects emit electromagnetic radiation as a result of thermal motion of their molecules; this radiation, called thermal radiation, is a mixture of different wavelengths. Unlike mechanical waves, which need the oscillating particles of a medium such as water or air to be transmitted, electromagne ...
Solution Derivations for Capa #12
Solution Derivations for Capa #12

... over the surface of a sphere. Thus, by finding the ratio of the detector’s surface are to the sphere’s surface area, it is possible to determine the amount of power originally present. P0 4πR2 where R is the radius from the source emitting the waves. In #6, the detector was a distance d from the det ...
Phys 12 Investigating the Photoelectric Effect 1a) List three
Phys 12 Investigating the Photoelectric Effect 1a) List three

A tutorial for designing fundamental imaging systems
A tutorial for designing fundamental imaging systems

... When we design optical systems, we need to decide specifications of optical systems. We need to decide following basic specifications, (1) Magnification and focal length, (2) Resolution and depth of focus. (1) Magnification and focal length We should decide magnification of designed system according ...
Study the Effect of the Sugar Solutions on the Rotation of the
Study the Effect of the Sugar Solutions on the Rotation of the

... and then the cuvette was filled with different concentrations of sugar solution. The analyzer adjusts to get the new laser power (maximum laser power) and measured the analyzer angle. 3- The observed rotation angle (analyzer angle) for different concentration of the sugar solution for (red, green, a ...
Reflecting And Refracting Light
Reflecting And Refracting Light

... that the light rays come together to a point. A diverging lens bends light so it spreads light apart instead of coming together. ...
Invisibility Cup - Purdue Engineering
Invisibility Cup - Purdue Engineering

Optical Mineralogy: Introduction
Optical Mineralogy: Introduction

Total Internal Reflection - Halton Catholic District
Total Internal Reflection - Halton Catholic District

... • Diamond has a critical angle of 24.4o. (index of refraction = 2.42, slows down light a lot) • A badly cut diamond will not allow light to internally reflect a few times. • Usually good diamonds have a high refractive index which means that diamonds have a very small critical angle. So a great dea ...
Hücre Membran Yapısı - mustafaaltinisik.org.uk
Hücre Membran Yapısı - mustafaaltinisik.org.uk

... obstacle clusters, (B) or by the cytoskeleton, (C) directed motion, and (D) free random diffusion (Jacobson et al Science, (1995) 268: p 1441 ...
Measurements at the Speed of Ultrasound
Measurements at the Speed of Ultrasound

... the pipe. If the pipe geometry is uniform, then reflections occur only when a defect or other discontinuity is encountered. The angle-beam wedge is used routinely nowadays to inspect welds and to find cracks or disbonds. Depending on the wedge angle, one can launch shear or Rayleigh (surface) or La ...
Ref. “Optical Materials”
Ref. “Optical Materials”

... The International Materials Institute for New Functionality in Glass (IMI-NFG) was established in August 2004 through an initiative of the National Science Foundation for enhancing research collaborations between US researchers and educators and their counterparts worldwide. It is also a collaborati ...
Synthesis and Characterization of Optically Active Zn
Synthesis and Characterization of Optically Active Zn

... The intensity variations within different pH solutions 3-12, of coated thin film on 5cm length of optic fiber with 0.5M concentration is shown in Fig. 3(I). The transmission in terms of intensity increases after coating resulting in good interaction of light with coating. The mechanism of fiber opti ...
Broad Band Two-Dimensional Manipulation of Surface Plasmons
Broad Band Two-Dimensional Manipulation of Surface Plasmons

... the distance between the edges which is not much larger than the SPP propagation length. We repeat the previous experiment with two unparallel slits (the slit width is around 300 nm and the angle between the slits is about 6°). As shown in Figure 3a, the contrast of the interference pattern is virtu ...
No Slide Title
No Slide Title

... The analyte is excited by light commonly at 253.7 nm from a low pressure mercury lamp. The light is absorbed and the molecule is excited and it gives off light of a different wavelength. This wavelength is monitored by a detector which sits at right angles to the UV light source used to excite the a ...
A crash course in optics
A crash course in optics

Optics-Optical Instruments_ppt_RevW10
Optics-Optical Instruments_ppt_RevW10

... • Lenses and mirrors with spherical surfaces are easy to make and understand, but they do not actually focus all incoming rays to a single point. This effect is called spherical aberration and is responsible for the “fish eye” distortion seen through a clear marble. • Newton understood this effect a ...
Slides for circular dichroism
Slides for circular dichroism

... Therefore molecules have a “handedness” higher order structures have a “hand” associated with it ...
Interference3
Interference3

... the surface of a denser medium is equal in magnitude to the coefficient of reflection from the surface of a rarer medium but opposite in sign. • Intensity of reflected light is the same for a ray incident from either side of the boundary. • Negative sign in amplitude indicates a phase change of  oc ...
Diffraction and Interference
Diffraction and Interference

... • Why is blue light used to view tiny objects in an optical microscope? • Blue light is shorter wavelength, so diffracts less compared to other colors of visible light. ...
The diffraction of light by sound waves of high
The diffraction of light by sound waves of high

... other hand, the optical length of C'D' is greater than that of CD, for the refractive index is minimum along CD. A simple consideration of the above shows that the difference between the optical lengths of A'B' and C'D' is less than that between those of AB and CD. As this difference gives twice the ...
A simple experiment on diffraction of light by interfering liquid
A simple experiment on diffraction of light by interfering liquid

... solid black line in Fig. 2兲 results in a similar water wave with a different 共increased兲 amplitude compared to the water wave produced by a single pin. On the other hand, in the region perpendicular to the line joining the sources, we can see a lattice-like structure. Therefore, the diffraction patt ...
Spoof Surface Plasmon Polariton Modes Propagating Along
Spoof Surface Plasmon Polariton Modes Propagating Along

... the concept of metamaterials. THz surface waves with stronger localization than expected for Sommerfeld waves have, for example, been observed on thin metallic meshes [21]. For planar interfaces structured with 2-D arrays of holes or 1-D arrays of grooves, it can be shown that this effective surface ...
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Surface plasmon resonance microscopy



Surface Plasmon Resonance Microscopy (SPRM) is a label free analytical tool that combines the surface plasmon resonance of metallic surfaces with imaging of the metallic surface.The heterogeneity of the refractive index of the metallic surface imparts high contrast images, caused by the shift in the resonance angle.SPRM can achieve a thickness sensitivity of few tenths of nanometer and lateral resolution achieves values of micrometer scale.SPRM is used to characterize surfaces, self-assembled monolayers, multilayer films, metal nanoparticles, oligonucleotides arrays, binding and reduction reactions.Surface Plasmon polaritons are surface electromagnetic waves coupled to oscillating free electrons of a metallic surface that propagate along a metal/dielectric interface.Since polaritons are highly sensitive to small changes in the refractive index of the metallic material,it can be used as a biosensing tool that does not require labeling. SPRM measurements can be made in real-time.Wang and collaborators studied the binding kinetics of membrane proteins in single cells.The experimental setup of an SPRM can be seen in the Figure 1, where an adherent cell is grown on a gold film and placed in an inverted microscope, p-polarized light was used to create the surface plasmons on the gold film and a CCD camera was used to create the SPR image.
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