Comment on “Evaluation of surface tension and Tolman length as a function of droplet radius from experimental nucleation rate and supersaturation ratio: Metal vapor homogeneous nucleation” [J. Chem. Phys. 124, 014506 (2006)]

2010 ◽  
Vol 133 (4) ◽  
pp. 047101 ◽  
Author(s):  
J. Liu ◽  
S. C. Garrick
Keyword(s):  
Surface Tension ◽  
Nucleation Rate ◽  
Homogeneous Nucleation ◽  
Metal Vapor ◽  
Chem Phys ◽  
Droplet Radius ◽  
Supersaturation Ratio ◽  
Tolman Length

scholarly journals Eliminating the Pre-exponential Factor in Classical Nucleation Theory

2019 ◽  
pp. 1-6
Author(s):  
John H. Jennings
Keyword(s):  
Molecular Weight ◽  
Surface Tension ◽  
Nucleation Rate ◽  
Homogeneous Nucleation ◽  
Polymer Concentration ◽  
Nucleation Theory ◽  
Classical Nucleation Theory ◽  
Low Molecular Weight ◽  
Exponential Factor ◽  
New Equation

Blander and Katz give a formula in classical nucleation theory, J = A exp K, for homogeneous nucleation (liquid-->gas). Jennings proved that dlnA/dK = 1/6K for all pure liquids by combining two theories, taking the limit as polymer concentration-->0. This gives lnA = (1/12)ln(K2) + C, where C is the integration constant. The conjecture is that C is a constant for fluids of low molecular weight.  We used data for 7 sample solvents, and solved for C. The surface tension drops out in C, which makes C more accurate, as the surface tension is difficult to get at 0.89Tc, the limit of superheat. Tc = critical point in Kelvin. All quantities are evaluated at the limit of superheat, which is approximately 0.89Tc for solvents. C = 74.77 ± 0.33 for the 7 solvents (not all alkanes). This eliminates the prefactor A, streamlining J: ln J = (1/12)ln(K2) + 74.77 + K is the exact new equation.  A computer can more easily be used to calculate J, the nucleation rate.

Surface tension of sulfur nanoparticles as determined from homogeneous nucleation experiments

2016 ◽  
Vol 97 ◽  
pp. 1-21 ◽  
Author(s):  
A.A. Onischuk ◽  
S.V. Valiulin ◽  
S.V. Vosel ◽  
V.V. Karasev ◽  
V.D. Zelik ◽  
...  
Keyword(s):  
Surface Tension ◽  
Homogeneous Nucleation ◽  
Sulfur Nanoparticles
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