Zur Theorie der Str�mungsdoppelbrechung von Kolloiden und gro�en Molek�len in L�sung

Peterlin, A.; Stuart, H. A.

doi:10.1007/bf01325633

Cited by 206 publications

(85 citation statements)

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“…The theory was extended in order to analyze the magneto-rotation of micron-sized particles dispersed in a liquid medium (e.g. Beams 1932;Peterlin & Stuart 1936;Buckingham & Polple 1956;Twersky 1969;Maret et al 1985;Yamagishi & Date 1989). The thermal agitation of the liquid molecule is assumed to randomize the grain direction.…”

Section: Samplementioning

confidence: 99%

Magneto-rotation experiments of micron-sized particles dispersed in a diffused gas medium oriented to reproduce the dust alignment in the interstellar region

Uyeda

Sakakibara

Tanaka

2003

A&A

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Abstract. The magneto-rotations were detected for graphite single-crystal grains dispersed in the diffused gas media for the first time in the pressure range between 300 Pa to 10 5 Pa at a temperature, T = 293 K. Full alignment was achieved at a field intensity of 14 mT for the graphite crystal of 3 × 10 −12 grms in weight at 300 Pa. The results were consistent with the Langevin theory, in which the balance between field-induced anisotropy energy and the thermal agitation energy were assumed to drive the process. The achieved experimental procedure provides a technical basis to reproduce the magnetic alignment in the diffused and low temperature condition of the star-formation region, considering that the contemporary experiments on magneto-rotation are performed on particles suspended in the liquid media. The experiments at low temperatures below 160 K can be performed only in the gas medium. The field intensity to achieve magnetic alignment is expected to be considerably small at molecular cloud temperature, due to the decrease of thermal agitation energy and due to the temperature dependence of the paramagnetic anisotropy following the Curie-Weiss law.

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Section: Samplementioning

confidence: 99%

Magneto-rotation experiments of micron-sized particles dispersed in a diffused gas medium oriented to reproduce the dust alignment in the interstellar region

Uyeda

Sakakibara

Tanaka

2003

A&A

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“…= 2.1 and of water c1 = 79. The potential energy I/ of non-conducting long rods in an electric field El in z-direction is given by [4,5]: gives a time dependent distribution functionfof the rod axis (D is the rotational diffusion coefficient) [4]:…”

Section: Sans Cross-section and Equation Of Motionmentioning

confidence: 99%

Transient SANS Studies on p‐Tetrafluorethylen (p‐TFE)

Baumann

Kalus

Neubauer

et al. 1989

Ber Bunsenges Phys Chem

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Dlfyusion : Neutron Scattering / Nonequilibriutn Phenomena I Solutions Time dependent anisotropic small-angle neutron scattering (SANS) patterns of p-TFE fibrilles are presented. In the experiment the fibrilles were exposed to a parallel AC-electric field in which the on and off cycle time had been adjusted to the orientation time of the fibrilles. The time resolution of the experiment was 40 ms. By an analysis of the time evolution of the SANS pattern relaxation times for alignment T, and randomisation T: were deduced. Both times, being equal within the error bars, are around 150 ns. The scattering curve for the fibrilles could only be fitted with the assumption of considerable polydispersity of their diameter.

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“…Theoretical studies of Coffey and Paranjape [10], Morita [11], Morita and Watanabe [12] and those of Alexiewicz [13] on the dielectric relaxation and KEB in alternating and unidirectional fields have already appeared. Peterlin and Stuart [14] obtained solutions of the electric birefringence in a sinusoidal electric field E(t) = Ε0 cos(ωt) for the cases of pure induced dipole and pure permanent dipole orientations. The solutions are limited to infinitely small fields.…”

Section: Introductionmentioning

confidence: 99%

Arbitrary Order Perturbation Expansion Applied to Steady-State Nonlinear Kerr Effect Relaxations in Coupled AC and DC Weak Fields

Hounkonnou

Ronveaux

1992

Acta Phys. Pol. A

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The steady state response of the nonlinear Kerr effect to a small ac field superimposed on a dc field is analysed using second-order perturbation theory. We justify the truncature effect entailed in solving the infinite set of differential equations that yield the electric polarization and birefringence, and hence draw inferences from the appearance of single and double harmonics as the fundamental frequencies of nonlinear Kerr effect. Tle addition of small inertial effects in the solution of this phenomenon results in the appearance of a contribution within the master matrix which is proportional to the square of the frequency corresponding to the order of perturbation. The study is based on the Smoluchowski equation of rotational Brownian motion.

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Zur Theorie der Str�mungsdoppelbrechung von Kolloiden und gro�en Molek�len in L�sung

Cited by 206 publications

References 0 publications

Magneto-rotation experiments of micron-sized particles dispersed in a diffused gas medium oriented to reproduce the dust alignment in the interstellar region

Magneto-rotation experiments of micron-sized particles dispersed in a diffused gas medium oriented to reproduce the dust alignment in the interstellar region

Transient SANS Studies on p‐Tetrafluorethylen (p‐TFE)

Arbitrary Order Perturbation Expansion Applied to Steady-State Nonlinear Kerr Effect Relaxations in Coupled AC and DC Weak Fields

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