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Strong Impact of Particle Size Polydispersity on the Thermal Conductivity of Yukawa Crystals.

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Title: Strong Impact of Particle Size Polydispersity on the Thermal Conductivity of Yukawa Crystals.
Authors: Tretiakov, Konstantin V.1,2 (AUTHOR) tretiakov@ifmpan.poznan.pl, Hyżorek, Krzysztof3 (AUTHOR) krzysztof.hyzorek@gmail.com
Source: Materials (1996-1944). Oct2024, Vol. 17 Issue 20, p4955. 10p.
Subjects: Face centered cubic structure, Colloidal crystals, Debye length, Crystal models, Particle dynamics
Abstract: Control of thermal transport in colloidal crystals plays an important role in modern technologies. A deeper understanding of the governing heat transport processes in various systems, such as polydisperse colloidal crystals, is required. This study shows how strongly the particle size polydispersity of a model colloidal crystal influences the thermal conductivity. The thermal conductivity of model colloidal crystals has been calculated using molecular dynamics simulations. The model crystals created by particles interacting through Yukawa (screened-Coulomb) interaction are assumed to have a face-centered cubic structure. The influence of the Debye screening length, contact potential, and particle size polydispersity on the thermal conductivity of Yukawa crystals was investigated. It was found that an increase in particle size polydispersity causes a strong—almost fivefold—decrease in the thermal conductivity of Yukawa crystals. In addition, the obtained results showed that the effect of the particle size polydispersity on reducing the thermal conductivity of Yukawa crystals is stronger than changes in values of the Debye screening length or the contact potential. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Strong Impact of Particle Size Polydispersity on the Thermal Conductivity of Yukawa Crystals.
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Oct2024, Vol. 17 Issue 20, p4955. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Face+centered+cubic+structure%22">Face centered cubic structure</searchLink><br /><searchLink fieldCode="DE" term="%22Colloidal+crystals%22">Colloidal crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Debye+length%22">Debye length</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+models%22">Crystal models</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+dynamics%22">Particle dynamics</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Control of thermal transport in colloidal crystals plays an important role in modern technologies. A deeper understanding of the governing heat transport processes in various systems, such as polydisperse colloidal crystals, is required. This study shows how strongly the particle size polydispersity of a model colloidal crystal influences the thermal conductivity. The thermal conductivity of model colloidal crystals has been calculated using molecular dynamics simulations. The model crystals created by particles interacting through Yukawa (screened-Coulomb) interaction are assumed to have a face-centered cubic structure. The influence of the Debye screening length, contact potential, and particle size polydispersity on the thermal conductivity of Yukawa crystals was investigated. It was found that an increase in particle size polydispersity causes a strong—almost fivefold—decrease in the thermal conductivity of Yukawa crystals. In addition, the obtained results showed that the effect of the particle size polydispersity on reducing the thermal conductivity of Yukawa crystals is stronger than changes in values of the Debye screening length or the contact potential. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/ma17204955
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      – Code: eng
        Text: English
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      – SubjectFull: Face centered cubic structure
        Type: general
      – SubjectFull: Colloidal crystals
        Type: general
      – SubjectFull: Debye length
        Type: general
      – SubjectFull: Crystal models
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      – SubjectFull: Particle dynamics
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              Text: Oct2024
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              Y: 2024
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