贝叶斯优化低温非热等离子喷气烧结纳米墨的贝叶斯优化
Zhongyu Cheng1, Ke Wang2, Ali M N Tanvir1
1Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States.
ACS applied materials & interfaces
|August 20, 2024
概括
贝叶斯优化 (BO) 和机器学习 (ML) 确定了氧化 (ITO) 薄膜非热等离子喷射烧结的最佳条件. 这种方法在低温下显著提高了电导率,为传统炉烧结提供了更快的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 等离子体物理学的物理学
背景情况:
- 灵活的电子设备需要先进的制造方法来制造基于纳米材料的油墨.
- 印刷纳米粒子薄膜的高温烧结受到基板热敏度的限制.
- 非热等离子喷气烧结为纳米粒子薄膜制造提供了低温替代方案.
研究的目的:
- 应用贝叶斯优化 (BO) 和机器学习 (ML) 来优化非热介电屏障放电 (DBD) 等离子喷气烧结变量.
- 为了确定氧化 (ITO) 薄膜中增强电导性的最佳加工条件.
- 展示适用于热敏基板的低温烧结技术.
主要方法:
- 利用贝叶斯优化 (BO) 与机器学习 (ML) 结合,探索七个关键的等离子喷气烧结变量.
- 根据BO/ML反进行了代实验,以改进烧结参数.
- 烧结的氧化 (ITO) 薄膜的电导率和基质峰值温度的测量.
主要成果:
- 在五轮优化后,在等离子喷气烧结ITO膜的电导率上实现了99.2%的增加.
- 在最佳条件下,电导率达到传统烧炉 (300°C) 的81.4%.
- 烧结过程是三倍更快,基质的峰值温度低于47°C.
结论:
- 贝叶斯优化有效地确定了复杂的等离子喷气烧结过程的最佳参数.
- 非热等离子喷气烧结是一种可行,快速,低温的方法,用于制造导电纳米材料薄膜.
- 这种方法显示出在热敏材料上制造灵活电子设备的巨大潜力.
相关概念视频
01:25Atomic Absorption Spectroscopy: Atomization Methods
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...
01:25Adsorption Isotherms II
Brunauer, Emmett, and Teller (BET) introduced a theory in 1938 that modified Langmuir's assumptions to explain multilayer physical adsorption. This theory is applicable to Type II isotherms and provides a more realistic picture of adsorption processes. The BET theory assumes a uniform solid surface with localized adsorption sites, where adsorption at one site doesn't affect adsorption at neighboring sites. This theory also allows for the possibility of additional molecules being adsorbed on top...