Relevant bibliographies by topics / Homogeneous nucleation theory

Academic literature on the topic 'Homogeneous nucleation theory'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Homogeneous nucleation theory.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Homogeneous nucleation theory"

1

Oxtoby, D. W. "Homogeneous nucleation: theory and experiment." Journal of Physics: Condensed Matter 10, no. 4 (February 2, 1998): 897. http://dx.doi.org/10.1088/0953-8984/10/4/019.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Oxtoby, D. W. "Homogeneous nucleation: theory and experiment." Journal of Physics: Condensed Matter 4, no. 38 (September 21, 1992): 7627–50. http://dx.doi.org/10.1088/0953-8984/4/38/001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zhukhovitskii, D. I. "Size‐corrected theory of homogeneous nucleation." Journal of Chemical Physics 101, no. 6 (September 15, 1994): 5076–80. http://dx.doi.org/10.1063/1.467364.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hartmann, S., D. Niedermeier, J. Voigtländer, T. Clauss, R. A. Shaw, H. Wex, A. Kiselev, and F. Stratmann. "The Leipzig Cloud Interaction Simulator (LACIS): operating principle and theoretical studies concerning homogeneous and heterogeneous ice nucleation." Atmospheric Chemistry and Physics Discussions 10, no. 11 (November 1, 2010): 25577–617. http://dx.doi.org/10.5194/acpd-10-25577-2010.

Full text
Abstract:
Abstract. At the Leipzig Cloud Interaction Simulator (LACIS) experiments investigating homogeneous and heterogeneous nucleation of ice (particularly immersion freezing in the latter case) have been carried out. Here both the physical LACIS setup and the numerical model developed to design experiments at LACIS and interpret their results are presented in detail. Combining results from the numerical model with experimental data, it was found that for the experimental parameter space considered, classical homogeneous ice nucleation theory is able to predict the freezing behavior of highly diluted ammonium sulfate solution droplets, while classical heterogeneous ice nucleation theory, together with the assumption of a constant contact angle, fails to predict the immersion freezing behavior of surrogate mineral dust particles (Arizona Test Dust, ATD). The main reason for this failure is the compared to experimental data apparently overly strong temperature dependence of the nucleation rate coefficient. Assuming, in the numerical model, Classical Nucleation Theory (CNT) for homogeneous ice nucleation and a CNT-based parameterization for the nucleation rate coefficient in the immersion freezing mode, recently published by our group, it was found that even for a relatively effective ice nucleating agent such as pure ATD, there is a temperature range where homogeneous ice nucleation is dominant. The main explanation is the apparently different temperature dependencies of the two freezing mechanisms. Finally, reviewing the assumptions made during the derivation of the parameterization, it was found that the assumption of constant temperature during ice nucleation and the chosen nucleation time were highly justified, underlining the applicability of both the method to determine the fitting coefficients in the parameterization equation, and the validity of the parameterization concept itself.
APA, Harvard, Vancouver, ISO, and other styles
5

Hartmann, S., D. Niedermeier, J. Voigtländer, T. Clauss, R. A. Shaw, H. Wex, A. Kiselev, and F. Stratmann. "Homogeneous and heterogeneous ice nucleation at LACIS: operating principle and theoretical studies." Atmospheric Chemistry and Physics 11, no. 4 (February 25, 2011): 1753–67. http://dx.doi.org/10.5194/acp-11-1753-2011.

Full text
Abstract:
Abstract. At the Leipzig Aerosol Cloud Interaction Simulator (LACIS) experiments investigating homogeneous and heterogeneous nucleation of ice (particularly immersion freezing in the latter case) have been carried out. Here both the physical LACIS setup and the numerical model developed to design experiments at LACIS and interpret their results are presented in detail. Combining results from the numerical model with experimental data, it was found that for the experimental parameter space considered, classical homogeneous ice nucleation theory is able to predict the freezing behavior of highly diluted ammonium sulfate solution droplets, while classical heterogeneous ice nucleation theory, together with the assumption of a constant contact angle, fails to predict the immersion freezing behavior of surrogate mineral dust particles (Arizona Test Dust, ATD). The main reason for this failure is the compared to experimental data apparently overly strong temperature dependence of the nucleation rate coefficient. Assuming, in the numerical model, Classical Nucleation Theory (CNT) for homogeneous ice nucleation and a CNT-based parameterization for the nucleation rate coefficient in the immersion freezing mode, recently published by our group, it was found that even for a relatively effective ice nucleating agent such as pure ATD, there is a temperature range where homogeneous ice nucleation is dominant. The main explanation is the apparently different temperature dependencies of the two freezing mechanisms. Finally, reviewing the assumptions made during the derivation of the CNT-based parameterization for immersion freezing, it was found that the assumption of constant temperature during ice nucleation and the chosen ice nucleation time were justified, underlining the applicability of the method to determine the fitting coefficients in the parameterization equation.
APA, Harvard, Vancouver, ISO, and other styles
6

Smolík, Jiří, and Vladimír Ždímal. "Homogeneous Nucleation of Supersaturated Vapors. A Comparison of Experimental Results with Theory." Collection of Czechoslovak Chemical Communications 58, no. 12 (1993): 2831–35. http://dx.doi.org/10.1135/cccc19932831.

Full text
Abstract:
Some theories of homogeneous nucleation based on liquid droplet model were tested by comparing with experimental supersaturations of naphthalene, phthalic anhydride, stearic acid, bis(2-ethylhexyl) phthalate, and bis(2-ethylhexyl) sebacate required to bring about the rate of homogeneous nucleation of about 5 drops/cm3 s-1. It was found that except for highly polar substance phthalic anhydride, the classical (Becker-Doring) theory of homogeneous nucleation, if suitably scaled, yielded fairly good predictions of the nucleation behaviour.
APA, Harvard, Vancouver, ISO, and other styles
7

Ito, Kimihisa. "Thermochemical Explanation of Classical Homogeneous Nucleation Theory." Materia Japan 36, no. 12 (1997): 1127–30. http://dx.doi.org/10.2320/materia.36.1127.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kalikmanov, V. I., and M. E. H. van Dongen. "Semiphenomenological theory of homogeneous vapor–liquid nucleation." Journal of Chemical Physics 103, no. 10 (September 8, 1995): 4250–55. http://dx.doi.org/10.1063/1.470662.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Katz, J. L. "Homogeneous nucleation theory and experiment: A survey." Pure and Applied Chemistry 64, no. 11 (January 1, 1992): 1661–66. http://dx.doi.org/10.1351/pac199264111661.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Shen, Vincent K., and Pablo G. Debenedetti. "A kinetic theory of homogeneous bubble nucleation." Journal of Chemical Physics 118, no. 2 (January 8, 2003): 768–83. http://dx.doi.org/10.1063/1.1526836.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Homogeneous nucleation theory"

1

Reinhardt, Aleks. "Computer simulation of the homogeneous nucleation of ice." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:9ec0828b-df99-42e1-8694-14786d7578b9.

Full text
Abstract:
In this work, we wish to determine the free energy landscape and the nucleation rate associated with the process of homogeneous ice nucleation. To do this, we simulate the homogeneous nucleation of ice with the mW monatomic model of water and with all-atom models of water using primarily the umbrella sampling rare event method. We find that the use of the mW model of water, which has simpler dynamics compared to all-atom models of water, but is nevertheless surprisingly good at reproducing experimental data, results in very reasonable agreement with classical nucleation theory, in contrast to some previous simulations of homogeneous ice nucleation. We suggest that previous simulations did not observe the lowest free energy pathway in order parameter space because of their use of global order parameters, leading to a deviation from classical nucleation theory predictions. Whilst monatomic water can nucleate reasonably quickly, all-atom models of water are considerably more difficult to simulate, primarily because of their slow dynamics of ice growth and the fact that standard order parameters do not work well in driving nucleation when such models are being used. In this thesis, we describe a local, rotationally invariant order parameter that is capable of growing ice homogeneously in a biassed simulation without the unnatural effects introduced by global order parameters, and without leading to non-physical chain-like growth of 'ice' clusters that results from a naïve implementation of the standard Steinhardt-Ten Wolde order parameter. We have successfully used this order parameter to force the growth of ice clusters in simulations of all-atom models of water. However, although ice growth can be achieved, equilibrating simulations with all-atom models of water is extremely difficult. We describe several approaches to speeding up the equilibration in all-atom models of water to enable the computation of free energy profiles for homogeneous ice nucleation.
APA, Harvard, Vancouver, ISO, and other styles
2

Dingilian, Kayane Kohar. "Homogeneous Nucleation of Carbon Dioxide (CO2) in Supersonic Nozzles." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1607019789125519.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Altman, Igor, and n/a. "Peculiarities of Nanoparticle Formation and Implications to Generation of Environmental Aerosols." Griffith University. School of Environmental Engineering, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051111.122816.

Full text
Abstract:
This Thesis considers peculiarities of nanoparticle formation from the gas in different systems. The main role of the surface condensation in the nanoparticle growth in metal flames was established through a series of experiments and was described by the developed model. The stagnation of the post-nucleation nanoparticle growth was experimentally revealed and theoretically explained. The influence of generation conditions on the post-processing nanoparticle properties was examined. The non-isothermal approach to correct the homogeneous nucleation theory was developed. The results of this work can be summarized in 3 categories: (1) Nanoparticle formation in metal flames. In this work, it was demonstrated that the surface condensation is a main process responsible for nanooxides growth during metal combustion. It was shown that the rate of this condensation growth is consistent with the exponential law, which could lead to the formation of the lognormal particle size distribution in the system, where the Brownian coagulation is suppressed. The post-nucleation stagnation of the nanoparticle growth was found. The particle overheating was suggested as a cause of the growth stagnation. The found stagnation leads to the accumulation of the supercritical clusters in the system generating nanoparticles. The role of these supercritical clusters in the nanoparticle agglomeration was considered. (2) Study of properties of nanoparticles generated in different metal flames. The light absorption, photoluminescence and magnetic properties of nanoparticles produced in different metal flames were examined. The significant broadening of the absorption edge was found in nanooxides produced by direct metal combustion. This broadening allowed one to excite the unforeseen photoluminescence from these nanoparticles. The significant light absorption in the visible light found in the titania particles produced by metal combustion allows one to consider these particles as a prospective photocatalyst. The unusual optical properties revealed were related to the extreme conditions of the nanoparticle formation, namely, to high energy release (about 5 eV per condensing molecule). The stabilization of spinel structure was found in iron oxide particles synthesized by iron combustion. It allowed one to produce nanoparticles with magnetization close to the high-limit value of the bulk. (3) Approach to correct the homogeneous nucleation theory. The existing homogeneous nucleation theory implies that nucleation occurs at isothermal conditions, i.e. subcritical clusters have the same temperature as the ambient gas does. However, the theory overestimates the actual nucleation rate and underestimates the critical cluster size. It is understandable that due to release of the latent heat of condensation, the cluster temperature in the nucleating system should be higher than the environment temperature. In this work, it was suggested the method to account for the cluster overheating during nucleation. It was demonstrated that the consistent description of the detailed balance in the nucleating system may allow one to evaluate magnitudes of overestimation of the actual nucleation rate and underestimation of the number of molecules in the critical cluster, usually obtained by the isothermal nucleation theory. The numerical estimates are in good agreement with the wellknown experimental results. The implications of the results to generation of atmospheric aerosols were discussed.
APA, Harvard, Vancouver, ISO, and other styles
4

Altman, Igor. "Peculiarities of Nanoparticle Formation and Implications to Generation of Environmental Aerosols." Thesis, Griffith University, 2005. http://hdl.handle.net/10072/366347.

Full text
Abstract:
This Thesis considers peculiarities of nanoparticle formation from the gas in different systems. The main role of the surface condensation in the nanoparticle growth in metal flames was established through a series of experiments and was described by the developed model. The stagnation of the post-nucleation nanoparticle growth was experimentally revealed and theoretically explained. The influence of generation conditions on the post-processing nanoparticle properties was examined. The non-isothermal approach to correct the homogeneous nucleation theory was developed. The results of this work can be summarized in 3 categories: (1) Nanoparticle formation in metal flames. In this work, it was demonstrated that the surface condensation is a main process responsible for nanooxides growth during metal combustion. It was shown that the rate of this condensation growth is consistent with the exponential law, which could lead to the formation of the lognormal particle size distribution in the system, where the Brownian coagulation is suppressed. The post-nucleation stagnation of the nanoparticle growth was found. The particle overheating was suggested as a cause of the growth stagnation. The found stagnation leads to the accumulation of the supercritical clusters in the system generating nanoparticles. The role of these supercritical clusters in the nanoparticle agglomeration was considered. (2) Study of properties of nanoparticles generated in different metal flames. The light absorption, photoluminescence and magnetic properties of nanoparticles produced in different metal flames were examined. The significant broadening of the absorption edge was found in nanooxides produced by direct metal combustion. This broadening allowed one to excite the unforeseen photoluminescence from these nanoparticles. The significant light absorption in the visible light found in the titania particles produced by metal combustion allows one to consider these particles as a prospective photocatalyst. The unusual optical properties revealed were related to the extreme conditions of the nanoparticle formation, namely, to high energy release (about 5 eV per condensing molecule). The stabilization of spinel structure was found in iron oxide particles synthesized by iron combustion. It allowed one to produce nanoparticles with magnetization close to the high-limit value of the bulk. (3) Approach to correct the homogeneous nucleation theory. The existing homogeneous nucleation theory implies that nucleation occurs at isothermal conditions, i.e. subcritical clusters have the same temperature as the ambient gas does. However, the theory overestimates the actual nucleation rate and underestimates the critical cluster size. It is understandable that due to release of the latent heat of condensation, the cluster temperature in the nucleating system should be higher than the environment temperature. In this work, it was suggested the method to account for the cluster overheating during nucleation. It was demonstrated that the consistent description of the detailed balance in the nucleating system may allow one to evaluate magnitudes of overestimation of the actual nucleation rate and underestimation of the number of molecules in the critical cluster, usually obtained by the isothermal nucleation theory. The numerical estimates are in good agreement with the wellknown experimental results. The implications of the results to generation of atmospheric aerosols were discussed.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental Engineering
Full Text
APA, Harvard, Vancouver, ISO, and other styles
5

McClurg, Richard Beatty. "Homogeneous nucleation theory." Thesis, 1997. https://thesis.library.caltech.edu/173/1/McClurg_rb_1997.pdf.

Full text
Abstract:
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. This thesis is composed of a brief preface followed by six chapters addressing various aspects of homogeneous nucleation theory. In the preface, I motivate the need for improved theoretical approaches to resolve the discrepancies between current theory and experiment. The remaining chapters are collected research papers which are in print, in press, or to be submitted as of the writing of the thesis. They were written in collaboration with one or both of my advisors. In Chapter 2, we review current nucleation theories in a statistical mechanical framework. This framework allows us to identify the errors of the various models and to point out internal inconsistencies in some of them. In Chapters 3 and 4, we develop methods to calculate the partition function and thermodynamic properties for noble gas clusters. The methods allow us to describe the asymptotic approach of cluster properties toward the bulk limit with increasing cluster size and to calculate the nucleation rate for supersaturated noble gas vapors. We then apply the methods to the homogeneous nucleation of condensed mercury from a supersaturated vapor in Chapter 5. Chapters 6 and 7 contain portions of the theoretical groundwork needed to extend atomistic nucleation theories to molecular systems. Chapter 6 is a development of a one-dimensional hindered rotor partition function. It sets the stage for the two and three-dimensional hindered rotor partition functions needed to model molecular solids. In Chapter 7 we construct a model for the charge distribution of [...]. We chose this icosahedral molecule as an ideal plastic crystalline substances. The plastic crystals are solids with translational symmetry, but having weak orientational symmetry due largely to their highly symmetric molecular charge distributions. Thus, plastic crystals are ideal hindered rotors in multiple dimensions. I conclude the thesis with some brief comments on my assertion that molecules which form plastic crystals will provide a fruitful common ground for theoretical and experimental investigations of homogeneous nucleation phenomena.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Homogeneous nucleation theory"

1

Autumn School on "Theory of Homogeneous Nucleation in First-Order Phase Transitions" (1st 1986 Ticino, Switzerland). Thermodynamics and kinetics of first-order phase transitions: Selected lectures of the First Autumn School on "Theory of Homogeneous Nucleation in First-Order Phase Transitions," Tessin, 14.-17., 10. 1986. Rostock: Wilhelm-Pieck-Universität, Sektion Physik, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Abraham, Farid. Homogeneous Nucleation Theory: The Pretransition Theory of Vapor Condensation. Elsevier Science & Technology Books, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Homogeneous nucleation theory"

1

Katz, Joseph L., and Marc D. Donohue. "A Kinetic Approach to Homogeneous Nucleation Theory." In Advances in Chemical Physics, 137–55. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470142592.ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Wilemski, Gerald. "Homogeneous Binary Nucleation Theory and the Structure of Binary Nanodroplets." In Nucleation and Atmospheric Aerosols, 267–77. Dordrecht: Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6475-3_55.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Laaksonen, Ari, and Jussi Malila. "Homogeneous gas–liquid nucleation theory." In Nucleation of Water, 45–70. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-12-814321-6.00012-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Mcclurg, R. B., and R. C. Flagan. "Statistical-mechanical basis for the 1/S correction to classical homogeneous nucleation theory." In Nucleation and Atmospheric Aerosols 1996, 81–84. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008042030-1/50017-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Harrison, Roger G., Paul W. Todd, Scott R. Rudge, and Demetri P. Petrides. "Crystallization." In Bioseparations Science and Engineering. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780195391817.003.0012.

Full text
Abstract:
Crystallization is the process of producing crystals from a homogeneous phase. For biochemicals, the homogeneous phase from which crystals are obtained is always a solution. Crystallization is similar to precipitation in that solid particles are obtained from a solution. However, precipitates have poorly defined morphology, while in crystals the constituent molecules are arranged in three-dimensional arrays called space lattices. In comparison to crystallization, precipitation occurs at much higher levels of supersaturation and rates of nucleation but lower solubilities. These and other differences between crystallization and precipitation are highlighted in Table 9.1. Because of these differences and because the theory of crystallization that has been developed is different from that for precipitation, crystallization is considered separately from precipitation. Crystallization is capable of producing bioproducts at very high purity (say, 99.9%) and is considered to be both a polishing step and a purification step. Polishing refers to a process needed to put the bioproduct in its final form for use. For some bioproducts, such as antibiotics, this final form must be crystalline, and sometimes it is even necessary that a specific crystal form be obtained. In some instances, the purification that can be achieved by crystallization is so significant that other more expensive purification steps such as chromatography can be avoided. There are actually two very different applications of crystallization in biotechnology and bioproduct engineering: crystallization for polishing and purification, and crystallization for crystallography. In the latter case, the goal is a small number of crystals with good size (0.2–0.9 mm) and internal quality. Although it has become common to crystallize proteins for characterization of their three-dimensional structure by x-ray diffraction, this is performed only at small scale in the laboratory, and the knowledge about how to crystallize proteins at large scale in a production process is less developed. However, many antibiotics and other small biomolecules are routinely crystallized in production scale processes. This chapter is oriented toward the use of crystallization in processes that can be scaled up.
APA, Harvard, Vancouver, ISO, and other styles
6

Bunker, Bruce C., and William H. Casey. "Nucleation and Growth of Solid Oxide and Hydroxide Phases." In The Aqueous Chemistry of Oxides. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199384259.003.0013.

Full text
Abstract:
In this chapter, we consider what happens when solids begin to form from solution. To grow solids from solution, solution conditions are changed from a condition in which all species are completely soluble to a condition in which they are insoluble. In the context of hydrolysis diagrams, the solution composition moves in pH and total dissolved metal concentration from a regime below a solubility or saturation limit (given by the bold solid line in Figs. 5.2 and 5.3) to a regime above this limit where the solution is supersaturated. Supersaturated solutions are inherently unstable and have the potential to generate hydroxide or oxide solids. Sometimes these solutions can be maintained in a metastable state in which precipitation does not occur immediately. However, Mother Nature eventually reduces the energy of the solution by forming a stable mixture of solids plus solution species. As solids form, soluble complexes are removed from solution until concentrations drop back to the solubility limit. The precipitation of a solid from an aqueous solution is a surprisingly complex process, involving nucleation and growth phenomena that occur at nanometer-length scales. Nucleation involves reactions between oligomers to form new clusters or particles that are sufficiently large that they do not redissolve spontaneously via the reversible reactions denoted in hydrolysis diagrams. Homogeneous and heterogeneous nucleation processes represent events that occur within the bulk solution or at the interface of another phase, respectively. Growth involves the addition of monomers to clusters in solution or oligomers to existing particles or surfaces. The combination of nucleation and growth phenomena can lead to oxides exhibiting a bewildering range of sizes, shapes, and crystal structures. How do metal complexes decide whether to form a new particle or add to an existing particle? What determines the size, shape, and crystal structure of evolving particles? Do the particles aggregate with one another in an organized fashion? Because nucleation typically involves extremely rapid (<1 millisecond) events involving objects that are extremely small (on the order of a nanometer), it is difficult to probe such phenomena at a molecular level.
APA, Harvard, Vancouver, ISO, and other styles
7

Veesler, S., and R. Boistelle. "Diagnostic of Pre-Nucleation and Nucleation By Spectroscopic Methods and Background on the Physics of Crystal Growth." In Crystallization of Nucleic Acids and Proteins. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780199636792.003.0015.

Full text
Abstract:
Unlike the crystallization of small inorganic molecules, the problem of protein crystallization was first approached by trial and error methods without any theoretical background. A physico-chemical approach was chosen because crystallographers and biochemists needed criteria to rationally select crystallization conditions. In fact, the problem of the production of homogeneous and structurally perfect protein crystals is set the same as the production of high-quality crystals for opto-electronic applications, because, in both cases, the crystal growth mechanisms are the same. Biological macromolecules and small organic molecules follow the same rules concerning crystallization even if each material exhibits specific characteristics. This chapter introduces the fundamentals of crystallization: supersaturation, nucleation, and crystal growth mechanisms. Phase diagrams are presented in Chapter 10. Special attention will be paid to the behaviour of the macromolecules in solution and to the techniques used for their analysis: light scattering (LS), small angle X-ray scattering (SAXS), small angle neutron scattering (SANS), and osmotic pressure (OP). Before obtaining any nucleation or growth, it is necessary to dissolve the biological macromolecules under consideration in some good solvent. However, it may immediately be asked whether a good solvent is a solvent in which the material is highly soluble, or in which nucleation is easily controlled, or in which growth is fast, or solvent in which the crystals exhibit the appropriate morphology. In practice, the choice of the solvent often depends on the nature of the material to be dissolved, taking into account the well known rule which says that ‘like dissolves like’. This means that, for dissolution to occur, it is necessary that the solute and the solvent exchange bonds: between an ion and a dipole, a dipole and another dipole, hydrogen bonds, and/or Van der Waals bonds. Therefore, the nature of the bonds depends on both the nature of the solute and the solvent which can be dipolar protic, dipolar aprotic, or completely apolar. Once the material has dissolved, the solution must be supersaturated in order to observe nucleation or growth. The solution is supersaturated when the solute concentration exceeds its solubility. There are several ways to achieve supersaturation.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Homogeneous nucleation theory"

1

Edwards, Jack, Kuo-Cheng Lin, Michael Ryan, and Campbell Carter. "Simulation of Supercritical Ethylene Condensation Using Homogeneous Nucleation Theory." In 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-97.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Itkin, Andrey L. "Molecular theory of homogeneous nucleation using a more sophisticated kinetic." In The 15th international conference on nucleation and atmospheric aerosols. AIP, 2000. http://dx.doi.org/10.1063/1.1361808.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bykov, Nikolay Y., and Yuriy E. Gorbachev. "Application of DSMC method for size-corrected theory of homogeneous nucleation." In 28TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS 2012. AIP, 2012. http://dx.doi.org/10.1063/1.4769689.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Planková, Barbora, Jan Hrubý, and Václav Vinš. "Prediction of the homogeneous droplet nucleation by the density gradient theory and PC-SAFT equation of state." In NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference. AIP, 2013. http://dx.doi.org/10.1063/1.4803213.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Biet, Thorsten. "Homogeneous nucleation of n-pentanol and droplet growth: A quantitative comparison of experiment and theory." In The 15th international conference on nucleation and atmospheric aerosols. AIP, 2000. http://dx.doi.org/10.1063/1.1361858.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Zeifman, M. I. "Applicability of the Homogeneous Nucleation Theory to the Condensation in Free Gas Expansions." In RAREFIED GAS DYNAMICS: 24th International Symposium on Rarefied Gas Dynamics. AIP, 2005. http://dx.doi.org/10.1063/1.1941587.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Xi, Xi, Hong Liu, Chang Cai, Ming Jia, and Weilong Zhang. "Analytical Investigation on the Homogeneous Nucleation in a Mono-Component and Bi-Component Droplet." In ASME 2019 6th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/mnhmt2019-3968.

Full text
Abstract:
Abstract The work attempts to analyze the performance of homogeneous nucleation by using the non-equilibrium thermodynamics theory and the classical nucleation theory. A nucleation rate graph was constructed under a wide range of operating temperature conditions. The results indicate that the superheat limit temperature (SLT) estimated by the modified homogeneous nucleation sub-model is in good agreement with the experimental results. The nucleation rate increases exponentially with the liquid temperature rise when the liquid temperature exceeds the SLT under atmospheric pressure. The superheated temperature needed to trigger the bubble nucleation decreases with the elevated ambient pressure.
APA, Harvard, Vancouver, ISO, and other styles
8

Suh, Donguk, and Kenji Yasuoka. "Kinetic Analysis on Nanoparticle Condensation by Molecular Dynamics." In ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icnmm2012-73140.

Full text
Abstract:
Condensation on a cubic seed particle was simulated by classical molecular dynamics. Seed size and supersaturation ratio of the system were the factors that were examined in order to observe the effects of the dimension of seeds and thermodynamic conditions. Two stages of nucleation were observed in the phenomenon, where the first stage is from the seed growth and the second from homogeneous nucleation. Therefore, the nucleation rate and growth rate were each calculated by the Yasuoka-Matsumoto method. As seed size increased the growth rate decreased, but there was no clear seed influence on the homogeneous nucleation characteristics. Besides the classical nucleation theory, cluster formation free energy and kinetic analysis were conducted. The free energy in the exponential term of the classical nucleation theory and that obtained from the cluster formation free energy showed different characteristics.
APA, Harvard, Vancouver, ISO, and other styles
9

Suh, Donguk, and Kenji Yasuoka. "Molecular Dynamics Simulation of Three-Dimensional Heterogeneous Nucleation." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44407.

Full text
Abstract:
Nanoparticle growth based on three-dimensional heterogeneous nucleation was simulated by classical molecular dynamics. To collectively observe the effects of the dimension of seeds and thermodynamic conditions, seed size and system supersaturation ratio were the factors that were examined to see if they influenced the nucleation rates. Two stages were found to exist within the system, where the first stage is from the seed growth and the second from homogeneous nucleation. The Yasuoka-Matsumoto method was used to calculate the rates. The homogeneous nucleation characteristics coincided with the classical nucleation theory, but heterogeneous nucleation showed an irregular form, which at the current state cannot not be fully understood. Kinetic analysis was also performed to calculate the critical nucleus size and better understand the seed growth characteristics. All in all, the seed effects were insignificant to the overall nucleation characteristics for this system.
APA, Harvard, Vancouver, ISO, and other styles
10

Liu, Chao, Xiaobo Wu, and Hualing Zhang. "Molecular Dynamics Simulation of Bubble Nucleation in Superheated Liquid." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22129.

Full text
Abstract:
The bubble homogeneous nucleation in superheated liquid argon is studied by molecular dynamics simulation in NVT ensemble. L-J potential is adopted for the interaction of argon atom. The simulated particle numbers of argon atom is 10976. The non-dimensional size of simulated box is 27.8×27.8×27.8. The initial non-dimensional temperature and density are 0.4 and 0.51 separately. The results show that the bubble homogeneous nucleation is divided into the waiting process, the appearing process of numerous small bubble nucleuses and the aggregation process of small bubble nucleuses. By fitting simulated data, we find that the bubble nucleation rate is eight orders of magnitudes bigger than the result of classic nucleation theory. The bubble nucleation rate increases along with the increasing of density and superheated temperature, which agrees well with one of classic nucleation theory.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Homogeneous nucleation theory"

1

Lindow, Steven E., Shulamit Manulis, Dan Zutra, and Dan Gaash. Evaluation of Strategies and Implementation of Biological Control of Fire Blight. United States Department of Agriculture, July 1993. http://dx.doi.org/10.32747/1993.7568106.bard.

Full text
Abstract:
The main objective of this study was to develop data that would facilitate a consistently effective method of biological control of fire blight disease to be developed and to enable its implementation for disease control by ensuring its compatibility with variations in the biological, environmental, and chemical conditions present in pear orchards. As considerable information on the pathogen and biological control of fire blight was already gathered from studies in California and elsewhere, an emphasis was placed on investigating the genetics and ecology of Erwinia amylovora, the causal agent of fire blight in Israel. Studies of plasmid profile, virulence on several host, serological characteristics, as well as DNA fingerprints with selected primers all revealed E. amylovora strains in Israel to be homogeneous. Strains did vary in their resistance to streptomycin, with those from more northern locations being resistant while those in the southern costal plain were all sensitive to streptomycin. Resistance appeared to be conferred by chromosomal mutations as in streptomycin-resistant strains in California. The biological control agent Pseudomonas fluorescens strain A506 colonized flowers of both the Costia and Spodona pear cultivars in Israel as well as Bartlett pear in California. Flowers that were open at the time of spray inoculation of trees subsequently harbored from 105 to 107 cells of strain A506 per flower, while those that opened subsequent to spraying developed population sizes of about 105 cells/flower within 5 days. The incidence of fire blight infections were reduced about 3-fold in several trials in which moderate amounts of disease occurred in the plot areas; this degree of biological control is similar to that observed in California and elsewhere. On two occasions warm and moist weather that favored disease led to epidemics in which nearly all flowers became infected and which was so severe that neither P. fluorescens strain A506 nor chemical bactericides reduced disease incidence. A novel method for identifying antagonistic microorganisms for biological control of fire blight and other diseases was developed. A bacterial ice nucleation gene was introduced into E. amylovora to confer an Ice+ phenotype and the population sizes of this modified pathogen on flowers that had been pre-treated with potential control agents was estimated by measuring the freezing temperature of colonized flowers. Antagonistic strains that prevented the growth of E. amylovora in flowers were readily detected as those in which flowers froze at a low temperature. The method is both rapid and unbiased and several bacterial strains with substantial biological control potential have been identified using this method.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Homogeneous nucleation theory' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography