Mixing by internal waves quantified using combined PIV/PLIF
... convenient technique to measure the velocity field. As to the density field, in general, in studies of internal waves, the synthetic Schlieren technique is used to measure the density gradient field, associated with wave propagation. Combined PIV–Schlieren measurements have permitted to describe the ...
... convenient technique to measure the velocity field. As to the density field, in general, in studies of internal waves, the synthetic Schlieren technique is used to measure the density gradient field, associated with wave propagation. Combined PIV–Schlieren measurements have permitted to describe the ...
Semicunductor by saradindu ghose for plus 2 physics
... JFETs are commonly used to amplify small ac signals. One reason for using a JFET instead of a bipolar transistor is that very high input impedance, Zin, can be obtained. A big disadvantage, however, is that the voltage gain, AV, obtainable with a JFET is much smaller. JFET amplifier configurations a ...
... JFETs are commonly used to amplify small ac signals. One reason for using a JFET instead of a bipolar transistor is that very high input impedance, Zin, can be obtained. A big disadvantage, however, is that the voltage gain, AV, obtainable with a JFET is much smaller. JFET amplifier configurations a ...
Mechanisms of structural colour in the Morpho butterfly: cooperation
... correlation causes a modulation corresponding to the diffraction spots due to the interference between neighbouring ridges, while the decrease in the number of effective layers is related to the transmission loss at the other layers. The remaining difference of the large angular range in the experim ...
... correlation causes a modulation corresponding to the diffraction spots due to the interference between neighbouring ridges, while the decrease in the number of effective layers is related to the transmission loss at the other layers. The remaining difference of the large angular range in the experim ...
Ultra-low power parametric frequency conversion in a silicon
... and is limited by the tunable filters used in our experimental setup. Note that the time scale of the operation of the device is limited by the bandwidth of the resonator. The devices demonstrated here can be used for optical data rates as high as 10 Gbit/s [27]. We measure the FWM efficiency as a f ...
... and is limited by the tunable filters used in our experimental setup. Note that the time scale of the operation of the device is limited by the bandwidth of the resonator. The devices demonstrated here can be used for optical data rates as high as 10 Gbit/s [27]. We measure the FWM efficiency as a f ...
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... been fabricated by direct laser writing in chalcogenide glasses in 2 h.[12] 3D photonic nanostructures operating at near-infrared and longer wavelengths larger than 100 µm × 100 µm × 100 µm with uniformity have been fabricated via laser lithography.[15] However, these 3D nanostructures typically hav ...
... been fabricated by direct laser writing in chalcogenide glasses in 2 h.[12] 3D photonic nanostructures operating at near-infrared and longer wavelengths larger than 100 µm × 100 µm × 100 µm with uniformity have been fabricated via laser lithography.[15] However, these 3D nanostructures typically hav ...
Overlay Network Andreas Holmqvist, Alexander Kronstrand Information Coding
... possible in optics since you cannot store light. Today optical buffering is done by delaying light with different techniques, some of them are fiber loops, slowing light using meta-materials, semiconductors and slowing light using photonic crystals.[7] Conversion of communication signals from light ...
... possible in optics since you cannot store light. Today optical buffering is done by delaying light with different techniques, some of them are fiber loops, slowing light using meta-materials, semiconductors and slowing light using photonic crystals.[7] Conversion of communication signals from light ...
Interferometry
Interferometry is a family of techniques in which waves, usually electromagnetic, are superimposed in order to extract information about the waves. Interferometry is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, remote sensing, biomolecular interactions, surface profiling, microfluidics, mechanical stress/strain measurement, and velocimetry.Interferometers are widely used in science and industry for the measurement of small displacements, refractive index changes and surface irregularities. In analytical science, interferometers are used in continuous wave Fourier transform spectroscopy to analyze light containing features of absorption or emission associated with a substance or mixture. An astronomical interferometer consists of two or more separate telescopes that combine their signals, offering a resolution equivalent to that of a telescope of diameter equal to the largest separation between its individual elements.