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相关概念视频

Contact Angle01:13

Contact Angle

12.5K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
12.5K
Frictional Force01:07

Frictional Force

8.1K
When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
8.1K
Mechanisms of Heat Transfer II01:20

Mechanisms of Heat Transfer II

3.3K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.3K
Mechanisms of Heat Transfer01:14

Mechanisms of Heat Transfer

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Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
374
Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

4.3K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.3K
Mechanism of heat transfer01:19

Mechanism of heat transfer

1.2K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
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相关实验视频

Updated: Jul 24, 2025

Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel
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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

Published on: March 29, 2018

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粘附能量可以优化软/硬材料接口的接口热阻吗?

Xiaxia Cheng1,2, Dongyi He2, Man Zhou1

  • 1School of Mechanical and Electrical Engineering, Guilin University of Electronic Technology, Guilin 541004, China.

Nano letters
|July 10, 2023
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种用于软/硬材料接口的新型弹性体复合材料,实现高粘附度和声匹配,以显著降低电子包装和传感器的接口热阻 (ITR).

关键词:
粘附能量是粘附的能量.接口 接口 接口 接口接口的热电阻 接口的热电阻软/硬材料可以分为软/硬材料.

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Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization

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Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
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相关实验视频

Last Updated: Jul 24, 2025

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Preparation and High-temperature Anti-adhesion Behavior of a Slippery Surface on Stainless Steel

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Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization
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Thin Film Composite Silicon Elastomers for Cell Culture and Skin Applications: Manufacturing and Characterization

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Atomic Force Microscopy Cantilever-Based Nanoindentation: Mechanical Property Measurements at the Nanoscale in Air and Fluid
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科学领域:

  • 材料科学 材料科学 材料科学
  • 接口科学 接口科学
  • 热力工程是热力工程中的一个.

背景情况:

  • 接口热阻 (ITR) 对电子包装,传感器和医药至关重要.
  • 同时实现高粘附能量和声子光谱匹配,以减少软/硬接口的ITR是具有挑战性的.

研究的目的:

  • 设计一种弹性体复合材料,优化粘附能量和声子光谱的匹配,以减少ITR.
  • 开发一个模型,将粘附能和ITR相关联起来.

主要方法:

  • 使用聚氨 - 硫酸共聚合物和微小球形制造弹性体复合物.
  • 界面属性的表征,包括粘附能量和ITR.
  • 开发一个基于物理的模型,将粘附能量与ITR联系起来.

主要成果:

  • 开发的复合材料表现出高粘附能量 (>1000 J/m2) 和良好的声子光谱与硬材料相匹配.
  • 实现了0.03mm2·K/W的显著低的界面热阻 (ITR).
  • 定量模型证实了粘附能在确定ITR中的关键作用.

结论:

  • 工程弹性体复合材料有效地减少ITR在软/硬接口通过优化粘附能量和声子光谱匹配.
  • 开发的模型为设计具有量身定制的热性质的接口提供了一个框架.
  • 这种方法为界面工程提供了一个新的策略,可能会改变界面科学中的范式.