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Modellistica 3D di Componenti Cellulari
Modellistica 3D di Componenti Cellulari

... regular. . . . these pores, or cells, . . . were indeed the first microscopical pores I ever saw, and perhaps, that were ever seen, for I had not met with any Writer or Person, that had made any mention of them before this. . . ...
Structural, optical, and electronic properties of magnetron
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Ellipsometry Data Analysis: a Tutorial - EECS @ UMich
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... Data representations Calculation of reflection from thin films Modeling of optical functions (n and k) Fitting ellipsometry data ...
Sample questions on optical fibre section of course
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... 12. Sattler, E., et al. (2013). "Optical coherence tomography in dermatology." J Biomed Opt 18(6): 061224. 13. Jang, I. K., et al. (2005). "In vivo characterization of coronary atherosclerotic plaque by use of optical coherence tomography." Circulation 111(12): 1551-1555. 14. Vakoc, B. J., et al. (2 ...
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... The corresponding modulation of the coherent scattering length density b1 is two orders of magnitude larger than in the best PNR materials reported up to now!! b1 = (bN), due to phase separation of the constituent compounds (b) can be large even if (N) is relatively small !!! M. Fally, I. Dreve ...
Optical fibers are not affected by interference
Optical fibers are not affected by interference

... operate in the near infrared (the main wavelengths used in fibers are 1300nm and 1550nm, along with 850nm for some applications); they can emit light at 850nm and 1300nm. They also have the advantages of long lifetimes and being cheap. Unfortunately they are large compared to the cross-section of a ...
nonlinear optics in photonic structures - Dipartimento SBAI
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Optical forces on small magnetodielectric particles
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... The full width at half maximum of the strongest hyperfine component of the sodium D2 line at 589.0 nm is 100 MHz. A beam of light passes through a gas of sodium with an atom density of 11017 m-3. Calculate: (i) The peak absorption coefficient due to this absorption line. (ii ) The frequency at whic ...
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... The rays with the same incident angle i form a fringe with the same order. (2) If i = constant, Optical path difference depends on the thickness — equal thickness interference. ...
ABCD law for Gaussian laser beams
ABCD law for Gaussian laser beams

... especially if the beam waist is small. This tendency competes with the focusing effect of the lens, and a new beam waist can occur at a wide range of locations, depending on the exact outcome of this competition. The ABCD law for Gaussian beams takes care of all of this. A Gaussian beam is character ...
UNIVERSITAT POLITÈCNICA DE CATALUNYA
UNIVERSITAT POLITÈCNICA DE CATALUNYA

Ultrafast Nonlinear Optics - University of Arizona Math
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... of nonparaxial and backward wave generation for regularization. However they ignore linear and nonlinear dispersion! • All physical collapse regularization mechanisms to date involve either dispersive regularization, plasma limiting or, possibly, nonlinear saturation. • Bidirectional UPPE provides a ...
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Tandem-Phase-Modulator-Based Optical Isolator in Silicon
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... The problem with this design is that the isolation is narrow band. The backwards propagating light is distributed to other frequencies, and thus if a broadband input is applied to this device, no isolation is observed, as shown in the top row of Fig. 3. Our proposed new design is shown in Figs. 1 (b ...
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... cables. They are more commonly used compared to flat cables. A coaxial cable consists of a conductor covered with a suitable insulation. A shield wire is wrapped on this insulation which serves as the second conductor also. The shield wire is then again covered with a suitable insulation which also ...
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Density Functional Calculation - Gazi University Journal of Science
Density Functional Calculation - Gazi University Journal of Science

... band gap values of these crystals are given in Table 3. The valance band in our calculations is composed of the 3s and 3p -states of the Cl, the 2s and 2p –states of the O atom, and the 6s –states of the Bi atom, while the conduction band consists of the 6p –states of the Bi atom. As can be seen in ...
Advanced Applications
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... Dichroic Atomic Vapor Spectroscopy (DAVS) utilizes the Zeeman effect to create a signal suitable for laser locking. A Rubidium or Potassium vapor cell is placed in a weak longitudinal magnetic field. Laser light travels through a Glan-Taylor Polarizer prior to entering the vapor cell, thereby ensuri ...
Two-dimensional modulational instability in photorefractive media M Saffman , Glen McCarthy
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... This latter expression shows clearly the decline of the instability growth rate with increasing angle away from the x̂ axis. In order to verify the reliability of the linear approximation discussed above we resorted to numerical analysis of the full two-dimensional model governing propagation of opt ...
A Distributed Pressure Sensing System to Prevent Bowel Perforations
A Distributed Pressure Sensing System to Prevent Bowel Perforations

... sensing system on the insertion tube of the colonoscope could alert an endoscopist when they are on the verge of causing a perforation. The scope of this project is to design and test a distrubted pressure sensor suitable for application on a colonoscope. Micro-bend optical sensors were chosen for t ...
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Optical tweezers



Optical tweezers (originally called ""single-beam gradient force trap"") are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch to physically hold and move microscopic dielectric objects similar to tweezers. Optical tweezers have been particularly successful in studying a variety of biological systems in recent years.
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