相关实验视频
Updated: Jul 1, 2025
07:20
Trapping of Micro Particles in Nanoplasmonic Optical Lattice
Published on: September 5, 2017
6.6K
填充液体的纳米孔材料的导热性:潜在的分子机制和拉特尔效应
Nikolas Ferreira de Souza1,2, Cyril Picard2, Luís Fernando Mercier Franco1
1School of Chemical Engineering, Department of Chemical Systems Engineering, University of Campinas, 13083-852 Campinas, Brazil.
The journal of physical chemistry. B
|March 4, 2024
概括
研究人员探索了纳米孔质材料中的"声"效应,发现液体吸附可以将导热率降低高达30%. 这一发现为设计用于能源和环境应用的先进材料提供了新的见解.
科学领域:
- 材料科学 材料科学 材料科学
- 热力学是一种热力学.
- 纳米技术 纳米技术
背景情况:
- 纳米孔状材料对于能源和环境解决方案至关重要,在吸附,分离和催化中具有应用.
- 纳米孔状固体在流体吸附过程中的热行为,特别是
- 雷特尔雷特尔是什么意思 雷特尔雷特尔是一个
- 效果,并没有很好地理解.
- 经典模型无法准确预测这些复杂的流体/固体系统中的热传递.
研究的目的:
- 调查调节电流的参数.
- 雷特尔雷特尔是什么意思 雷特尔雷特尔是一个
- 在充满液体的纳米孔状固体中产生作用.
- 开发一个分子框架,以了解流体吸附和声子传输之间的相互作用.
- 为纳米孔状复合材料的导热率提供预测模型.
主要方法:
- 一个Lennard-Jones流体的分子模拟被限制在一个全焦岩中.
- 流体/流体,流体/固体和固体/固体相互作用强度的系统变化.
- 分析流体密度和质量密度对热传输的影响.
主要成果:
- 确定了控制流体吸附和声子传输之间的合的关键参数.
- 证明了这一点.
- 雷特尔雷特尔是什么意思 雷特尔雷特尔是一个
- 由于流体/固体碰撞,这种效应会导致导热率下降 (高达30%).
- 开发了一个统计物理模型,根据声音速度和声寿命变化解释观察到的热行为.
结论:
- 一个简单的统计物理模型成功地合理化了受流体限制的纳米孔状固体的热行为.
- 这是一个很棒的节目,这是一个很棒的节目.
- 雷特尔雷特尔是什么意思 雷特尔雷特尔是一个
- 效应提供了一个调整纳米孔材料热导电性的机制.
- 这些发现使得能够设计新的应用程序,利用流体-纳米孔材料相互作用进行热管理.
相关概念视频
01:17Viscosity
5.9K
When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. This property of fluids is called fluid viscosity. In this example, water has a lower viscosity than honey and maple syrup.
The SI unit of viscosity is...
The SI unit of viscosity is...
5.9K
01:17Theory of Metallic Conduction
1.3K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
1.3K
01:23Steady, Laminar Flow in Circular Tubes
203
Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is...
203