Dynamic light scattering at low rates of shear

نویسندگان

  • B. J. Ackerson
  • N. A. Clark
چکیده

2014 Dynamic light scattering as a probe of fluctuations for systems undergoing steady linear shear is examined. Several approximations are made to calculate the intensity correlation function for a dense system of independent particles or fluctuations at low rates of shear. In this limit the intensity correlation function is similar in structure to the equilibrium intensity correlation function ; however, the signal to background factor becomes correlation time dependent. The result is tested experimentally by measuring the intensity correlation function for a dilute solution of Brownian particles undergoing shear. The feasibility of using dynamic light scattering as a probe of fluctuations in sheared systems is discussed. J. Physique 42 (1981) 929-936 JUILLET 1981,

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Entrapment–D-(+)-Glucose Water Nanodroplet: Synthesis and Dynamic Light Scattering

In the present research, the D-(+)-Glucose–confined water nanodroplets with mean size in the range of 6-11 nm were synthesized at D-(+)-Glucose different concentrations by AOT reverse micelles (RMs) method as a function of mass fraction of droplet (MFD) at the constant water-to-surfactant molar ratio ( W=40). The dynamic light scattering of the nano-sized water droplets containing the D-(+)-Glu...

متن کامل

Anisotropic Small Angle Light and Neutron Scattering from a Lyotropic Lamellar Phase under Shear

The influence of shear on the lamellar phase of a semi-dilute solution (36il (w /w) of tetra ethylenglycol dodecylether (CH3[CH2]11 [OCH2CH2]40H, C12E4) in water was investigated by Small Angle Light Scattering (SALS), Small Angle Neutron Scattering (SANS) and rheology. A plateau modulus was determined by low amplitude oscillatory shear experiments. A strong scattering peak perpendicular to the...

متن کامل

Scattering investigation of multiscale organization in aqueous solutions of native xanthan.

The hierarchical morphology of xanthan solutions is analyzed by light and neutron scattering in a broad range of concentrations in order to connect their morphology to their well-documented dynamic properties. Static light scattering inside the semidilute regime is dominated by the form factor of individual xanthan chains while at higher concentrations chain interconnections appear to modify th...

متن کامل

Effect of tocopherol on Pluronic microemulsions: turbidity studies and Dynamic light scattering and dynamic surface tension measurements

The development and design of the biocompatible and biodegradable thermodynamically stable micellar and microemulsion transparent dispersions to reduce the free and unbounded drugs concentration in the blood is a basic challenge in field of drug efficacy and bioavailability of drugs. In the current work, solubilization capacity of the drug (Tocopherol), oil (Ethyl Butyrate), and oil+drug (1:1 m...

متن کامل

Diffusing - wave spectroscopy in a shear flow

We present a new technique for measuring velocity gradients for laminar shear flow, using dynamic light scattering in the strongly multiple-scattering regime. We derive temporal autocorrelation functions for multiply scattered light, taking into account particle displacements arising from deterministic shear flow and random Brownian motion. The laminar shear flow and Brownian motion are charact...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016