相关实验视频
Updated: Jul 18, 2025
08:29
Thermal Measurement Techniques in Analytical Microfluidic Devices
Published on: June 3, 2015
9.7K
使用纳米结构的钻石基板进行热管理的模拟
Tingting Liu1, Kaiwen Zheng1, Tao Tao1
1Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China.
Micromachines
|August 26, 2023
概括
钻石纳米结构增强化 (GaN) 功率装置中的散热. 这项研究证明了它们在降低设备温度和提高先进热管理可靠性的有效性.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 热管理 热管理
背景情况:
- 基于化 (GaN) 的动力设备正在迅速发展,导致尺寸更小,功率密度更高.
- 在GaN设备中的功率密度增加会导致显著的热聚合,损害设备的可靠性和稳定性.
- 有效的热管理对于现代功率电子设备的性能和寿命至关重要.
研究的目的:
- 研究使用具有纳米结构的钻石基板来改善GaN电源设备的热管理.
- 设计和制造钻石纳米结构,以提高散热效率.
- 评估纳米结构钻石基板对GaN设备温度和性能的影响.
主要方法:
- 运用计算模拟来分析具有钻石纳米结构的GaN设备的热性能.
- 制造具有特定纳米结构的钻石基板,特别是方形纳米柱.
- 模拟结果的实验验证,评估散热能力.
主要成果:
- 钻石基板与2000纳米高度的方形纳米柱体证明了最佳的散热.
- 纳米结构的整合有效地减少了GaN设备中的热积累.
- 观察到显著的温度下降,从121°C下降到114°C.
结论:
- 钻石微/纳米结构基板为GaN设备的先进热管理提供了可行的解决方案.
- 开发的纳米结构基板显著提高了散热效率.
- 这项研究为开发具有增强热稳定的下一代GaN电源设备提供了有价值的指导方针.
相关概念视频
01:20Mechanisms 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
01:14Mechanisms of Heat Transfer
360
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...
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...
360
01:19Mechanism 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...
1.2K
01:14Mechanisms 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