Mimicking the colourful wing scale structure of the
... incidence the artificial replica appears green, while it, d, reflects blue at grazing incidence, showing some iridescence (scale bars 5 mm). e, Under a light microscope, the concavity edges appear turquoise, while the centres and interstitial regions are yellow (left); between crossed polarisers onl ...
... incidence the artificial replica appears green, while it, d, reflects blue at grazing incidence, showing some iridescence (scale bars 5 mm). e, Under a light microscope, the concavity edges appear turquoise, while the centres and interstitial regions are yellow (left); between crossed polarisers onl ...
Tunable properties of light propagation in photonic liquid crystal fibers
... sions. When effective refractive index of LC is higher than that silica glass, the light is guided by the PBG mechanism, but with temperature the indices contrast diminishes and, consequently, the PBG effect disappears due to the matching between solid-core and cladding refractive indices. The trans ...
... sions. When effective refractive index of LC is higher than that silica glass, the light is guided by the PBG mechanism, but with temperature the indices contrast diminishes and, consequently, the PBG effect disappears due to the matching between solid-core and cladding refractive indices. The trans ...
Components of Optical Instruments, Cont…
... A prism is a wavelengths selector that depends on the dispersion ability of the incident radiation by the prism material. Dispersion: The variation of refractive index with wavelength, or frequency. Polychromatic light: is composed of several wavelengths, so dispersion of these wavelengths will be d ...
... A prism is a wavelengths selector that depends on the dispersion ability of the incident radiation by the prism material. Dispersion: The variation of refractive index with wavelength, or frequency. Polychromatic light: is composed of several wavelengths, so dispersion of these wavelengths will be d ...
Optics 101 for non-optical engineers
... Basic Optical Terms / Definitions Diffraction = As a wavefront of light passes by an opaque edge or through an opening, secondary weaker wavefronts are generated. These secondary wavefronts will interfere with the primary wavefront as well as each other to form various diffraction patterns. Diffrac ...
... Basic Optical Terms / Definitions Diffraction = As a wavefront of light passes by an opaque edge or through an opening, secondary weaker wavefronts are generated. These secondary wavefronts will interfere with the primary wavefront as well as each other to form various diffraction patterns. Diffrac ...
Downloaded
... The photocurrent characteristics of a diarylethene (DAE) film were investigated. The photocurrents were attributed to the dissociation of electric carriers from the excited molecules in the DAE film. We demonstrated the on-off property of the photocurrent according to the isomerization state. Result ...
... The photocurrent characteristics of a diarylethene (DAE) film were investigated. The photocurrents were attributed to the dissociation of electric carriers from the excited molecules in the DAE film. We demonstrated the on-off property of the photocurrent according to the isomerization state. Result ...
Essential Questions and Answers: What is light? Light is a form of
... Light is a form of energy that travels freely through space. It is a type of electromagnetic radiation, just like radio waves, infrared radiation and x-rays. We can only see part of the range of electromagnetic radiation (the spectrum). The part we can see is visible light. ...
... Light is a form of energy that travels freely through space. It is a type of electromagnetic radiation, just like radio waves, infrared radiation and x-rays. We can only see part of the range of electromagnetic radiation (the spectrum). The part we can see is visible light. ...
Diode-Array UV Solar Spectroradiometer Implementing
... are configured in the ‘on’ position and determination of device specific parameters such as spectral range, spectral resolution, and bandwidth is possible. The spectral range is tunable using the angular adjustment of the grating. The angle was then adjusted to cover the range of 270 nm to 425 nm us ...
... are configured in the ‘on’ position and determination of device specific parameters such as spectral range, spectral resolution, and bandwidth is possible. The spectral range is tunable using the angular adjustment of the grating. The angle was then adjusted to cover the range of 270 nm to 425 nm us ...
2. Link Margin Calculations
... An optical transmitter is typically modelled as a point source or as a very small surface area radiating light (this calculation is typically independent of the wavelength/spectrum profile of the optical source and the equations apply to any individual wavelengths or combination of wavelengths). Bar ...
... An optical transmitter is typically modelled as a point source or as a very small surface area radiating light (this calculation is typically independent of the wavelength/spectrum profile of the optical source and the equations apply to any individual wavelengths or combination of wavelengths). Bar ...
optical properties of dielectric mirrors, produced by large area glass
... durability of the thin (roughly 80-100 nm thick) silver layer. This kind of mirror is the so-called second surface mirror (SSM), having the highly reflective active material on the back side of the substrate. In order to get better adhesion of the Ag, the glass surface has to be polished and washed ...
... durability of the thin (roughly 80-100 nm thick) silver layer. This kind of mirror is the so-called second surface mirror (SSM), having the highly reflective active material on the back side of the substrate. In order to get better adhesion of the Ag, the glass surface has to be polished and washed ...
Polarized light and polarizers
... metallic wires, placed in a plane perpendicular to the incident beam. Electromagnetic waves with electric fields aligned parallel to the wires induce the movement of electrons along the length of the wires. Since the electrons are free to move, the polarizer behaves in a similar manner as the surfac ...
... metallic wires, placed in a plane perpendicular to the incident beam. Electromagnetic waves with electric fields aligned parallel to the wires induce the movement of electrons along the length of the wires. Since the electrons are free to move, the polarizer behaves in a similar manner as the surfac ...
White top-emitting organic light-emitting diodes using one
... general, due to the differences in the refractive index between the cathode metal of the TEOLED device and air, some of light emitted inside of the TEOLED device cannot be extracted through the semitransparent cathode metal by Snell's law. That is, when the light passes through from a medium with a ...
... general, due to the differences in the refractive index between the cathode metal of the TEOLED device and air, some of light emitted inside of the TEOLED device cannot be extracted through the semitransparent cathode metal by Snell's law. That is, when the light passes through from a medium with a ...
Valer Tosa
... propagation. This is due to the balance between the divergent lens created by the electron plasma and the convergence of the beam. When the cell is placed in the focus or after the focus, i.e. in the diverging beam, an initial flat radial distribution tends to form but is gradually destroyed with in ...
... propagation. This is due to the balance between the divergent lens created by the electron plasma and the convergence of the beam. When the cell is placed in the focus or after the focus, i.e. in the diverging beam, an initial flat radial distribution tends to form but is gradually destroyed with in ...
Specifying an Aspheric Surface
... anamorphic asphere, which has additional higher-order terms in two orthogonal directions. Also, a toroid, or toric, form exists which has the effective shape of a doughnut with two radii. Applications and Benefits The majority of optical systems are based on the use of spherical components because t ...
... anamorphic asphere, which has additional higher-order terms in two orthogonal directions. Also, a toroid, or toric, form exists which has the effective shape of a doughnut with two radii. Applications and Benefits The majority of optical systems are based on the use of spherical components because t ...
Chapter 35
... to each other by half of a wavelength. When such two waves are added together, they will cancel each other at all time, because a positive amplitude and a negative amplitude of the same magnitude exist at the same spatial location at the same time. So one gets no wave at the end as a result! Thus in ...
... to each other by half of a wavelength. When such two waves are added together, they will cancel each other at all time, because a positive amplitude and a negative amplitude of the same magnitude exist at the same spatial location at the same time. So one gets no wave at the end as a result! Thus in ...
ECE 182 POLARIZATION
... where no - refractive index of ordinary ray, ne - refractive index of extraordinary ray, d thickness of plate, and λ – wavelength. Since nλ is the path difference between the two rays, n can be considered as the retardation expressed in fractions of a wavelength. For example, n = 1/4 for a quarter-w ...
... where no - refractive index of ordinary ray, ne - refractive index of extraordinary ray, d thickness of plate, and λ – wavelength. Since nλ is the path difference between the two rays, n can be considered as the retardation expressed in fractions of a wavelength. For example, n = 1/4 for a quarter-w ...
X-ray Optics - Studentportalen
... Since the complex refractive index determines absorptivity, transmitivity and reflectivity, these optical properties can be derived with this information: this is also done at this very useful homepage. Absorption The absorption coefficient, , defined in the Beer-Lambert law, which describes how t ...
... Since the complex refractive index determines absorptivity, transmitivity and reflectivity, these optical properties can be derived with this information: this is also done at this very useful homepage. Absorption The absorption coefficient, , defined in the Beer-Lambert law, which describes how t ...
OPTICAL CONSTANTS OF URANIUM NITRIDE IN THE XUV
... control of the nitrogen pressure in this range. Some change in plumbing of the system allowed more accurate control. The last two samples (UN004 and UN005) were sputtered at a nitrogen partial pressure of about 10-5 torr. Section 2.2 discusses characterization of the films to ensure that they are i ...
... control of the nitrogen pressure in this range. Some change in plumbing of the system allowed more accurate control. The last two samples (UN004 and UN005) were sputtered at a nitrogen partial pressure of about 10-5 torr. Section 2.2 discusses characterization of the films to ensure that they are i ...
L09 Instru Spectrofluorometery
... Then to measure the intensity of the monochromatic emitted light, we’ll use a photocell *detector*(the photocell in UV designed to measure I° and It and take the ratio but here in spectrofluorometer it will measure the intensity of the monochromatic emitted light). Note the design of the spectrofluo ...
... Then to measure the intensity of the monochromatic emitted light, we’ll use a photocell *detector*(the photocell in UV designed to measure I° and It and take the ratio but here in spectrofluorometer it will measure the intensity of the monochromatic emitted light). Note the design of the spectrofluo ...
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.