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arXiv 2001.05594physics.chem-ph
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单个孤立碳纳米颗粒的热发射光谱:颗粒尺寸、材料、电荷、激发波长和热历史的影响

Thermal Emission Spectroscopy of Single, Isolated Carbon Nanoparticles: Effects of Particle Size, Material, Charge, Excitation Wavelength, and Thermal History

Bryan A. Long, Daniel J. Rodriguez, Chris Y. Lau, Madeline Schultz, Scott L. Anderson

摘要:

结果显示,在1000至2100 K的温度范围内,单独捕获的碳纳米颗粒(NPs)的热发射。我们探索的影响的大小和波长依赖性的发射率,λ(λ),NP的大小和电荷和类型的碳材料,包括石墨,石墨烯,金刚石,炭黑,和碳量子点。此外,它被发现,加热的纳米粒子,特别是到1900 K以上的温度,导致在发射性能的显着变化,这是由于退火和升华引起的表面和缺陷位点的分布的变化。

英文摘要:

Results are presented for thermal emission from individually trapped carbon nanoparticles (NPs) in the temperature range from 1000 to 2100 K. We explore the effects on the magnitude and wavelength dependency of the emissivity, epsilon (lambda), of the NP size and charge and of the type of carbon material, including graphite, graphene, diamond, carbon black, and carbon dots. In addition, it is found that heating the NPs, particularly to temperatures above 1900 K, results in significant changes in the emission properties, which is attributed to changes in the distribution of surface and defect sites caused by annealing and sublimation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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