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Liquid–Solid Solutions01:29

Liquid–Solid Solutions

The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...
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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
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A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
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Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
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Robust two-dimensional spatial solitons in liquid carbon disulfide.

Edilson L Falcão-Filho1, Cid B de Araújo, Georges Boudebs

  • 1Departamento de Física, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil. elff@df.ufpe.br

Physical Review Letters
|February 7, 2013
PubMed
Summary

Researchers demonstrated near-infrared (2+1)D solitons in liquid carbon disulfide, driven by third- and fifth-order nonlinear optical effects. These self-reinforcing light waves propagated diffraction-free for extended distances, confirming theoretical predictions.

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Area of Science:

  • Nonlinear Optics
  • Condensed Matter Physics
  • Photonics

Background:

  • Nonlinear optical phenomena are crucial for advanced light manipulation.
  • Solitons, self-reinforcing wave packets, are key to applications like optical communications.
  • Understanding higher-order nonlinearities is essential for controlling soliton behavior.

Purpose of the Study:

  • To demonstrate the excitation of (2+1)D solitons in the near-infrared spectrum.
  • To investigate the role of third- and fifth-order nonlinear susceptibilities in soliton formation.
  • To experimentally validate soliton propagation characteristics in liquid carbon disulfide.

Main Methods:

  • Experimental excitation of solitons using a near-infrared laser source.
  • Observation of soliton propagation over multiple Rayleigh lengths.
  • Numerical simulations employing a nonlinear Schrödinger-type equation.

Main Results:

  • Successful demonstration of (2+1)D soliton excitation in liquid carbon disulfide.
  • Observed soliton propagation free from diffraction for over 10 Rayleigh lengths.
  • Experimental results supported by numerical calculations, highlighting the contribution of third- and fifth-order nonlinearities.

Conclusions:

  • The simultaneous contribution of third- and fifth-order nonlinear susceptibilities enables (2+1)D soliton excitation.
  • Observed long-distance, diffraction-free propagation validates the soliton behavior in this nonlinear medium.
  • Numerical and experimental findings confirm the theoretical model for soliton dynamics.