Structural Properties and Phase Behavior in Colloidal Suspensions

Released on by Stephen A. Barr
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  • Structural Properties and Phase Behavior in Colloidal Suspensions Book Detail

  • Author : Stephen A. Barr
  • Release Date : 2010
  • Publisher :
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  • File Size : 27,27 MB
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Structural Properties and Phase Behavior in Colloidal Suspensions by Stephen A. Barr PDF Summary

Book Description: In this dissertation I present my research on the effective interactions of colloidal particles induced by a smaller species, as well as the structure of colloidal particles undergoing freeze casting. In this research I have used a wide variety of computational techniques in order to understand these systems. Specifically, in Chapter 2 I study nanoparticle haloing in a system of silica microspheres and highly charged polystyrene nanoparticles. Computer simulations are employed to determine the effective microsphere0́3 microsphere potential induced by the nanoparticles. From these simulations I am also able to determine the degree of nanoparticle adsorption on the microsphere surface. In Chapter 3 I investigate the depletion interaction in a system of charged microspheres and rigid rods. The effect of both rod concentration and screening length is explored. In Chapter 4 I study the effective interactions between charged colloids in the presence of multivalent counterions. The role of colloid charge is investigated and the onset of like-charged attraction is determined and compared with theoretical predictions. In order to study this system, I extended the geometric cluster algorithm to efficiently simulate systems interacting through the Coulomb potential. In Chapter 5 computer simulations are employed to elucidate the experimentally observed crystal phases of the Q and MS-2 virus particles in solution with multivalent salt and non-adsorbing polymer. Freeze casting is studied in Chapter 6. In this process colloidal particles are pushed by an advancing ice front. I use molecular dynamics simulations to study the dynamics of the colloidal particles and the resulting structures formed. iii

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Soft Matter, Volume 2

Soft Matter, Volume 2

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Soft Matter encompasses a wide range of systems of varying components, including synthetic and biological polymers, colloids, and amphiphiles. The distinguishin

Phase Transitions in Colloidal Suspensions

Phase Transitions in Colloidal Suspensions

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The first five articles in this issue emphasize equilibrium phases and structures. The hard sphere properties of sterically stabilized particle suspensions are