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Correlated diffraction and fluorescence in the backscattering
... their rainforests severely limits the population of these insects and all birdwings” are classified as vulnerable or endangered 关6兴. The specimens used for our studies were all certified to have been obtained through commercial breeding or taken from the historical samples of the Hungarian Natural H ...
... their rainforests severely limits the population of these insects and all birdwings” are classified as vulnerable or endangered 关6兴. The specimens used for our studies were all certified to have been obtained through commercial breeding or taken from the historical samples of the Hungarian Natural H ...
Suppression of optical damage at 532 nm in
... beam propagating through Sample 1 distorts along the Z axis and preferentially smears toward the –Z direction [4]. This type of unidirectional photorefractive distortion is consistent with a diffusion dominant mechanism such as the bulk photovoltaic effect [15]. Interestingly, the smearing of the be ...
... beam propagating through Sample 1 distorts along the Z axis and preferentially smears toward the –Z direction [4]. This type of unidirectional photorefractive distortion is consistent with a diffusion dominant mechanism such as the bulk photovoltaic effect [15]. Interestingly, the smearing of the be ...
Design and FDTD Simulation of Photonic Crystal k
... In this section, we first discuss the relation of the beam propagation in the PC and the position of the output end of the k-vector prism. Although the k-vector prism utilizes the deflection of the k vector, the deflection of the S vector always exists simultaneously. The beam propagation in the PC ...
... In this section, we first discuss the relation of the beam propagation in the PC and the position of the output end of the k-vector prism. Although the k-vector prism utilizes the deflection of the k vector, the deflection of the S vector always exists simultaneously. The beam propagation in the PC ...
TEM - UiO
... Dark field images (two beam condition) If a sample is crystalline, many of the electrons will undergo elastic scattering from the various (hkl) planes. This scattering produces many diffracted beams. If any of these diffracted beams is allowed to pass through the objective aperture a dark field imag ...
... Dark field images (two beam condition) If a sample is crystalline, many of the electrons will undergo elastic scattering from the various (hkl) planes. This scattering produces many diffracted beams. If any of these diffracted beams is allowed to pass through the objective aperture a dark field imag ...
LAB 1 - SIMPLE DIFFRACTION, FOURIER OPTICS AND ACOUSTO
... through the center of the iris that is integrated in the spatial filter. You should use the tilt settings to back-reflect this into the laser, not the vertical or horizontal adjustment knobs. Now placing the screen in front of the spatial filter (such as a business card from the supplies drawer), sl ...
... through the center of the iris that is integrated in the spatial filter. You should use the tilt settings to back-reflect this into the laser, not the vertical or horizontal adjustment knobs. Now placing the screen in front of the spatial filter (such as a business card from the supplies drawer), sl ...
Directional Reflection measurements on
... In the case of a aluminium coated mirror, this systematic error typically is in the order of only 0.05% - 0.4%, depending on the wavelength, polarisation and θ . An example of a calibration of a second surface reference mirror is shown in Fig. 4. ...
... In the case of a aluminium coated mirror, this systematic error typically is in the order of only 0.05% - 0.4%, depending on the wavelength, polarisation and θ . An example of a calibration of a second surface reference mirror is shown in Fig. 4. ...
Acoustooptic interaction of two light beams in a paratellurite crystal
... Light diffraction by ultrasound in crystals is widely employed in optoelectronics to control luminous fluxes [1–4]. Paratellurite (TeO2) crystals, which exhibit an extremely high acoustooptic (AO) quality are applied in AO devices [1–5]. This material allows realization of anisotropic diffraction ch ...
... Light diffraction by ultrasound in crystals is widely employed in optoelectronics to control luminous fluxes [1–4]. Paratellurite (TeO2) crystals, which exhibit an extremely high acoustooptic (AO) quality are applied in AO devices [1–5]. This material allows realization of anisotropic diffraction ch ...
Activating Nonreducible Oxides via Doping
... methodology and therefore require a finite conductivity of the sample. Because most nonreducible oxides are insulators even in the doped state, we have mimicked their properties by growing oxide films on metal single crystals. We have focused on the thickness range of 10−50 ML, thick enough to suppres ...
... methodology and therefore require a finite conductivity of the sample. Because most nonreducible oxides are insulators even in the doped state, we have mimicked their properties by growing oxide films on metal single crystals. We have focused on the thickness range of 10−50 ML, thick enough to suppres ...
Holographic low-energy electron diffraction
... from that form the reference wave, whilst those resulting from subsequent single scattering contribute to the object wave in first order. This is different from the LEED case where the first-order (holographic) object wave undergoes a double-scattering process, though if one groups together all scat ...
... from that form the reference wave, whilst those resulting from subsequent single scattering contribute to the object wave in first order. This is different from the LEED case where the first-order (holographic) object wave undergoes a double-scattering process, though if one groups together all scat ...
X-ray Optics - Studentportalen
... In the hard X-ray range it is easy to find scattering plane where this condition is fulfilled. Here one also uses that the penetration length of the photons are large, so that many crystal planes contribute to the scattering: thus the resolving power can become very large. At ESRF (ID16 and ID28) on ...
... In the hard X-ray range it is easy to find scattering plane where this condition is fulfilled. Here one also uses that the penetration length of the photons are large, so that many crystal planes contribute to the scattering: thus the resolving power can become very large. At ESRF (ID16 and ID28) on ...
A negative permeability material at red light
... impedance η = η ′ + ιη ′′ . To obtain these parameters, the complex values of the transmitted and reflected fields should be available either from optical experiments or simulations [1,2]. In addition, along with its effective n and η , the layer can be characterized by its effective permittivity ε ...
... impedance η = η ′ + ιη ′′ . To obtain these parameters, the complex values of the transmitted and reflected fields should be available either from optical experiments or simulations [1,2]. In addition, along with its effective n and η , the layer can be characterized by its effective permittivity ε ...
Novel biosensor for detecting Hemoglobin and its oxidation state
... There has been a great deal of interest in sensing using the surface and guided modes of a stratified medium. Usually such sensors make use of the attenuated total reflection dip, which heralds the excitation of the surface/guided mode [13]. The angular or the spectral location of the dip is extreme ...
... There has been a great deal of interest in sensing using the surface and guided modes of a stratified medium. Usually such sensors make use of the attenuated total reflection dip, which heralds the excitation of the surface/guided mode [13]. The angular or the spectral location of the dip is extreme ...
Total Reflection X-Ray Fluorescence Spectrometer
... so that the origin of the LS is placed on the apparent focus spot of the x-ray tube. In this setup the intensity of the excitation beam is increased comparing with the prototype instrument, because the distance between x-ray source and a sample is reduced and the intensity at the focus spot is much ...
... so that the origin of the LS is placed on the apparent focus spot of the x-ray tube. In this setup the intensity of the excitation beam is increased comparing with the prototype instrument, because the distance between x-ray source and a sample is reduced and the intensity at the focus spot is much ...
Water-Induced Negative Electron Affinity on Diamond (100)
... in Figure 2. There appears to be almost a single peak at about 532 eV, which is assigned to hydroxyl (-OH) groups from the study of oxygen on diamond surfaces by Makau et al.,31 for exposures up to 100 000 L. After the maximum dosage at about atmospheric pressure, a shoulder at about 533 eV appears, ...
... in Figure 2. There appears to be almost a single peak at about 532 eV, which is assigned to hydroxyl (-OH) groups from the study of oxygen on diamond surfaces by Makau et al.,31 for exposures up to 100 000 L. After the maximum dosage at about atmospheric pressure, a shoulder at about 533 eV appears, ...
Document
... (f) Diffraction patterns to probe structure Examples: - difference in diffraction angles from CDs and DVDs - diffraction pattern to determine thickness of hair - diffraction pattern from complex gratings (textiles etc) - principle of holography ...
... (f) Diffraction patterns to probe structure Examples: - difference in diffraction angles from CDs and DVDs - diffraction pattern to determine thickness of hair - diffraction pattern from complex gratings (textiles etc) - principle of holography ...
UV-light microscope: improvements in optical imaging for a
... system is given by d 0.5l/NA, where l and NA are the wavelength of light and numerical aperture, respectively. Applying NA ¼ 0.12 for the IMS 1280 microscope system, d is estimated to be 1.8 mm and 1.5 mm, for blue-LED and UV-light illumination, respectively. These values are comparable to the est ...
... system is given by d 0.5l/NA, where l and NA are the wavelength of light and numerical aperture, respectively. Applying NA ¼ 0.12 for the IMS 1280 microscope system, d is estimated to be 1.8 mm and 1.5 mm, for blue-LED and UV-light illumination, respectively. These values are comparable to the est ...
Scanning Electron Microscopy Primer - CharFac
... beam current. Also, a very small aperture will display diffraction effects (dD). The wave nature of electrons gives rise to a circular diffraction pattern rather than a point in the Gaussian image plane. Manufacturers utilize apertures of a diameter that are a compromise of reducing spherical aberra ...
... beam current. Also, a very small aperture will display diffraction effects (dD). The wave nature of electrons gives rise to a circular diffraction pattern rather than a point in the Gaussian image plane. Manufacturers utilize apertures of a diameter that are a compromise of reducing spherical aberra ...
surface properties
... Droplets of liquids therefore tend to be spherical, because a sphere is the shape with the smallest surface-to-volume ratio. However, there may be other forces present that compete against the tendency to form this ideal shape, and in particular gravity may flatten spheres into puddles or oceans. Su ...
... Droplets of liquids therefore tend to be spherical, because a sphere is the shape with the smallest surface-to-volume ratio. However, there may be other forces present that compete against the tendency to form this ideal shape, and in particular gravity may flatten spheres into puddles or oceans. Su ...
Reflection high-energy electron diffraction
Reflection high-energy electron diffraction (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample, which distinguishes RHEED from other materials characterization methods that also rely on diffraction of high-energy electrons. Transmission electron microscopy, another common electron diffraction method samples the bulk of the sample due to the geometry of the system. Low-energy electron diffraction (LEED) is also surface sensitive, but LEED achieves surface sensitivity through the use of low energy electrons.