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Selective Trapping or Rotation of Isotropic Dielectric Microparticles
Selective Trapping or Rotation of Isotropic Dielectric Microparticles

... (diameter of 11.325 μm) and the circularly polarized light can be safely considered as a plane wave at the sample plane. Figure 4a shows four recorded frames at t = 1, 2, 3, and 4 s extracted from the movie clip when the PAS is excited by lefthanded circular plane wave to generate the focusing near ...
Biosensing under an applied voltage using optical waveguide
Biosensing under an applied voltage using optical waveguide

Engineering nonlinearities in nanoscale optical systems
Engineering nonlinearities in nanoscale optical systems

... air or ncladding ⬃ 1.45 for silica), results in very tight light confinement. Such strong light confinement lets Si guided-wave devices be scaled down to ultrasmall cross sections, i.e., ⬍0.1 µm2. These devices are termed Si photonic wires (SPWs). This reduction to nanoscale cross section, which is ...
Replication of Holograms with Corn Syrup by Rubbing
Replication of Holograms with Corn Syrup by Rubbing

... Corn syrup (Karo®) is composed of a variety of complex sugars and other compounds in smaller proportions. The main chemical components of any processed honey varieties are fructose and glucose [4]. The fructose and glucose in honey are simple molecules and not chemically bonded as in the sucrose mol ...
Deconvolution Microscopy
Deconvolution Microscopy

... The greatest limitation of optical microscopy is spatial resolution, which is in the range of the wavelength of light used. The ultimate goal of cell microscopy is to capture the activity of cell components. In this respect, the resolution of limited numerical aperture wide-field microscopy may not ...
Semiconductor optical amplifier-based all-optical gates
Semiconductor optical amplifier-based all-optical gates

... conversion eases the recovery from link or node failures by allowing for local rather than global reconfigurations in the network, e.g., [8]–[14]. Thus, there are very good arguments for pursuing efficient wavelength conversion. The cross-gain modulated (XGM) gate is extremely simple to assemble. It ...
Flatland optics - Weizmann Institute of Science
Flatland optics - Weizmann Institute of Science

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... imaging. Of particular interest has been the study of fluorescent xenobiotics in human skin using two-photon fluorescence laser scanning microscopy. The background is the desire to develop new non-invasive tools to study topical drug delivery and improve the understanding of mechanisms involved in con ...
Inducing and Controlling Particle Motion in an Optical Trap
Inducing and Controlling Particle Motion in an Optical Trap

2015/1/6 1 Chapter 28 Liquid Chromatography High
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... 28D-2 Method Development in Partition Chromatography Column Selection: the polarity of the stationary phase is matched roughly with that of the analytes; a mobile phase of considerably different polarity is then used for elution. In summary, polarities for solute, mobile phase, and stationary phase ...
Double Negative Materials (DNM) - Institute for Defense Analyses
Double Negative Materials (DNM) - Institute for Defense Analyses

Heterogeneous Time Dependent Static Light Scattering
Heterogeneous Time Dependent Static Light Scattering

Far-field optical microscope with nanometer-scale
Far-field optical microscope with nanometer-scale

... nanometer-scale resolution would be produced. Very recently a microscope built on this principle has been reported 6, and experimental proofs of its resolution of at least 50 nm, which is equal to approximately λ/10 and far supersedes resolution of any other known far-field optical microscope have b ...
blah
blah

... In the first group, we consider three high energy and narrow peaks (3–9 meV) at 1.337, 1.329, and 1.319 eV. The origin of these PL lines in either not purposely or slightly doped InSe has not been a subject of intensive research and the authors that studied this semiconductor attributed them to free ...
Nonlinear Microstructure Fibers
Nonlinear Microstructure Fibers

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Femtosecond pulse propagation in silicon waveguides: Variational

... formalism for studying the parametric effects on a femtosecond pulse inside a SOI waveguide. The main limitation of the variational technique is that it requires the functional form of the pulse shape to remain the same even though the parameters of the pulse such as its amplitude, width, phase, and ...
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Measurement and correction of aberrations in light and electron
Measurement and correction of aberrations in light and electron

... compensated for by using an active element integrated into the beam path which is functioning as a corrector. The optimal settings for this corrector need to be determined without excessive damage to the sample. In particular, for sensitive biological samples, the potential gain for signal and/or re ...
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Optical switches

Heriot-Watt University Multi-millijoule few-cycle mid
Heriot-Watt University Multi-millijoule few-cycle mid

... As can be seen from Fig. 1b spectrally broadened due to SPM in YAG 94-fs pulses are self-compressed by a factor of 3 to 30 fs, which at 3.9 mm wavelength corresponds to less than 3 optical cycles. Note that in order to highlight the broadening of the spectrum ordinate axis in Fig. 1c the spectra are ...
Long period grating based biosensor for the detection of Escherichia
Long period grating based biosensor for the detection of Escherichia

... Several schemes based on the label-free methods, like evanescent wave coupling in grating couplers (Horváth et al., 2003), leaky optical waveguides (Zourob et al., 2005) and SPR (Bae et al., 2004; Oh et al., 2005; Taylora et al., 2005; Homola, 2006) for the detection of E. coli have been proposed in ...
Abstract
Abstract

13 - Atomic Physics
13 - Atomic Physics

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Dispersion staining



The optical properties of all liquid and solid materials change as a function of the wavelength of light used to measure them. This change as a function of wavelength is called the dispersion of the optical properties. The graph created by plotting the optical property of interest by the wavelength at which it is measured is called a dispersion curve.The dispersion staining is an analytical technique used in light microscopy that takes advantage of the differences in the dispersion curve of the refractive index of an unknown material relative to a standard material with a known dispersion curve to identify or characterize that unknown material. These differences become manifest as a color when the two dispersion curves intersect for some visible wavelength. This is an optical staining technique and requires no stains or dyes to produce the color. Its primary use today is in the conformation of the presence of asbestos in construction materials but it has many other applications.
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