14_04_2014 - IB Phys..
... Total Internal Reflection • When a ray of light travels from a denser to a rarer medium such that the angle of incidence is greater than the critical angle, the ray reflects back into the medium. This is called total internal reflection. ...
... Total Internal Reflection • When a ray of light travels from a denser to a rarer medium such that the angle of incidence is greater than the critical angle, the ray reflects back into the medium. This is called total internal reflection. ...
FIB – an easy tool for fabrication of high quality plasmonic structures
... SPPs cannot be excited directly by incident electromagnetic radiation. One of the possible ways for their excitation is scattering of an incident electromagnetic wave on surface perturbations: holes, grooves and slits. In this example, an observation of interference of SPPs on the slits prepared by ...
... SPPs cannot be excited directly by incident electromagnetic radiation. One of the possible ways for their excitation is scattering of an incident electromagnetic wave on surface perturbations: holes, grooves and slits. In this example, an observation of interference of SPPs on the slits prepared by ...
Dielectric screening and band-structure effects in low
... The calculated photon-energy dependence of the normal emission intensity 共Jscr for the screened field and Jwos without screening兲 from the surface states on Al共100兲 and on Be共0001兲 is compared to the measurements in Figs. 2共c兲 and 2共d兲. The spectra with screened exciting field are in good agreement ...
... The calculated photon-energy dependence of the normal emission intensity 共Jscr for the screened field and Jwos without screening兲 from the surface states on Al共100兲 and on Be共0001兲 is compared to the measurements in Figs. 2共c兲 and 2共d兲. The spectra with screened exciting field are in good agreement ...
Surface Plasmon Polaritons Excited By Electromagnetic Waves
... surface sources to be present [2, 3]. Equivalent surface sources are also introduced in the method of moments (MoM) to correctly describe the effects of external fields on field solutions in some region of interest[4]. The presence of a surface current leads to a discontinuity of the tangential H fi ...
... surface sources to be present [2, 3]. Equivalent surface sources are also introduced in the method of moments (MoM) to correctly describe the effects of external fields on field solutions in some region of interest[4]. The presence of a surface current leads to a discontinuity of the tangential H fi ...
Laser Vibrometer Measurements of Objects Immersed
... beams interfere constructively. If the path difference is exactly in-between these values, then the beams interfere destructively. Constructive interference results in high intensity on the photodetector, destructive interference in low intensity. Since the light reflecting from the object double pa ...
... beams interfere constructively. If the path difference is exactly in-between these values, then the beams interfere destructively. Constructive interference results in high intensity on the photodetector, destructive interference in low intensity. Since the light reflecting from the object double pa ...
Properties of Light and Visual Function
... Wavelength- (l m,nm) Distance from peak to peak, trough to trough or any repeatable position. It is inversely proportional to the amount of energy the atom gives up. So, short wavelengths have high energy. ...
... Wavelength- (l m,nm) Distance from peak to peak, trough to trough or any repeatable position. It is inversely proportional to the amount of energy the atom gives up. So, short wavelengths have high energy. ...
Imaging properties of supercritical angle
... image space when the field distribution in the focal region of the sample space is known, see for example Ref. [7]. However, this approach fails when the involved optics cannot be described by some simple relationship between plane wave modes in sample space and in image space. In that case, one usu ...
... image space when the field distribution in the focal region of the sample space is known, see for example Ref. [7]. However, this approach fails when the involved optics cannot be described by some simple relationship between plane wave modes in sample space and in image space. In that case, one usu ...
Cristaux Photoniques, PO-014 Ecole doctorale photonique Romuald
... • Resolution is limited by the sphere astigmatism and field of view • Analysis is delicate • Experiment does not discriminate between true propagating slow modes and localised defect modes ...
... • Resolution is limited by the sphere astigmatism and field of view • Analysis is delicate • Experiment does not discriminate between true propagating slow modes and localised defect modes ...
Global measurement of water waves by Fourier transform
... concentration control. For measuring the global FSD caused by the interaction of surface waves impinging on a single fixed vortex, Vivanco and Melo (2004) scanned the whole surface measuring at each point the deflection of a reflected laser beam. Although the method provides for a measure of the amp ...
... concentration control. For measuring the global FSD caused by the interaction of surface waves impinging on a single fixed vortex, Vivanco and Melo (2004) scanned the whole surface measuring at each point the deflection of a reflected laser beam. Although the method provides for a measure of the amp ...
39 Steps
... affects the fraction of the light emitted by the specimen that can be collected. This is also true for light from the laser. Objective magnification is inversely related to the diameter of the objective lens entrance pupil. The objective will only function properly if the entire entrance pupil is fi ...
... affects the fraction of the light emitted by the specimen that can be collected. This is also true for light from the laser. Objective magnification is inversely related to the diameter of the objective lens entrance pupil. The objective will only function properly if the entire entrance pupil is fi ...
Huygens` and Fermat`s Principles – Application to reflection
... front propagates without distortion (or with a negligible amount) i.e. light travels in straight lines ...
... front propagates without distortion (or with a negligible amount) i.e. light travels in straight lines ...
Reflection of Light
... • Most objects that you can see are nonluminous (you can see them because they reflect light to your eyes). • Most non-luminous objects have rough surfaces and will reflect light in a manner that reveals their shape, colour, and texture. • Some non-luminous objects reflect light is such a way that ...
... • Most objects that you can see are nonluminous (you can see them because they reflect light to your eyes). • Most non-luminous objects have rough surfaces and will reflect light in a manner that reveals their shape, colour, and texture. • Some non-luminous objects reflect light is such a way that ...
Interference
... The Physics of Structural Colour • Light reflects from slightly different places along the surface. An optical path difference is introduced ...
... The Physics of Structural Colour • Light reflects from slightly different places along the surface. An optical path difference is introduced ...
Lecture 1 - Engineering
... Wave Equation (derived from Maxwell’s equations) c t Any function that satisfies this eqn is a wave ...
... Wave Equation (derived from Maxwell’s equations) c t Any function that satisfies this eqn is a wave ...
Biomolecular and cellular research devices.
... molecules can take place with no or very little change of wavelength. The intensity of the scattered light depends on molecular weight and also scattering angle which can be used for estimation of the macromolecule shape. Raman spectrometry. In scattering of photons a small change of wavelength oc ...
... molecules can take place with no or very little change of wavelength. The intensity of the scattered light depends on molecular weight and also scattering angle which can be used for estimation of the macromolecule shape. Raman spectrometry. In scattering of photons a small change of wavelength oc ...
Chapter 23: Electromagnetic waves What will we learn in this chapter?
... For larger angles than θcrit the sine is not properly defined, the light is trapped in the lower material and reflected back. Total internal reflection: If nb < na a ray is reflected back into the material if the angle of incidence is greater than θcrit = arcsin(nb /na ). ...
... For larger angles than θcrit the sine is not properly defined, the light is trapped in the lower material and reflected back. Total internal reflection: If nb < na a ray is reflected back into the material if the angle of incidence is greater than θcrit = arcsin(nb /na ). ...
Chapter 23: Electromagnetic waves What will we learn in this chapter?
... For larger angles than θcrit the sine is not properly defined, the light is trapped in the lower material and reflected back. Total internal reflection: If nb < na a ray is reflected back into the material if the angle of incidence is greater than θcrit = arcsin(nb /na ). ...
... For larger angles than θcrit the sine is not properly defined, the light is trapped in the lower material and reflected back. Total internal reflection: If nb < na a ray is reflected back into the material if the angle of incidence is greater than θcrit = arcsin(nb /na ). ...
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.