相关实验视频

Updated: Jun 17, 2025

Revealing Dynamic Processes of Materials in Liquids Using Liquid Cell Transmission Electron Microscopy

Revealing Dynamic Processes of Materials in Liquids Using Liquid Cell Transmission Electron Microscopy

Published on: December 20, 2012

结晶层的生长与嵌入的碳基颗粒从泡的平板电脑基纳米流体

¹Nanotechnology and Advanced Materials Program, Energy and Building Research Center, Kuwait Institute for Scientific Research, 13109, Safat, Kuwait. nmali@kisr.edu.kw.

Scientific reports

|August 9, 2024

概括

这项研究检查了碳基纳米流体中的晶体层生长. 蒸水基纳米流体显示出更好的稳定性和增强的导热性,在海水基悬浮液中结晶性增加.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
流体动力学流体动力学

背景情况:

液体中的结晶可以增强传热能力.
纳米流体提供了改善热性能的潜力.
基于碳的泡片被用来创造新的纳米流体.

研究的目的:

为了研究从碳基泡片中获得的纳米流体中的晶体层生长.
描述这些纳米流体的分散稳定性,热导率和结晶行为.
为了比较纳米流体在蒸水 (DW) 和海水 (SW) 的性能.

主要方法:

使用多壁碳纳米管 (MWCNTs),二二硫酸 (SDS),单基酸 (NaH2PO4) 和碳酸 (Na2CO3) 制造泡片.
在DW和SW中制备MWCNT悬浮液 (0.050.15体积%)
分散稳定性,导热性和晶体层增长的表征.

主要成果:

与基于SW的对应物相比,基于DW的纳米流体显示出更高的分散稳定性.
对于0.05%体积%的DW基悬浮物,观察到最佳的长期稳定性.
在热导率上实现了显著的增加 (3.29%在DW中,3.13%在SW中在0.15体积%MWCNTs).
在含量>0.05%MWCNT的纳米流体中开始结晶,在较高度的SW基悬浮液中加速增长.

结论:

该研究成功开发和表征了基于碳的纳米流体,用于潜在的传热应用.
纳米流体的稳定性和结晶受到基液 (DW与SW) 和MWCNT度的影响.
对优化泡剂成分的进一步研究可以提高结晶控制和热性能.

关键词:

结晶化结晶化结晶化分散稳定性分散稳定性热剂是一种热剂.在 MWCNTs 中.暂停暂停暂停导热性导热性导热性导热性导热性

更多相关视频

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Optimization of Crystal Growth for Neutron Macromolecular Crystallography

Optimization of Crystal Growth for Neutron Macromolecular Crystallography

Published on: March 13, 2021

相关概念视频

Crystal Growth: Principles of Crystallization

Crystal Growth: Principles of Crystallization

Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...

Recrystallization: Solid–Solution Equilibria

Recrystallization: Solid–Solution Equilibria

Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...