Thermal Emission Spectroscopy of Single, Isolated Carbon Nanoparticles: Effects of Particle Size, Material, Charge, Excitation Wavelength, and Thermal History
| Autor: | Scott L. Anderson, Madeline Schultz, Bryan A. Long, Chris Y. Lau, Daniel J. Rodriguez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Materials science Carbon Nanoparticles FOS: Physical sciences Charge (physics) 02 engineering and technology Thermal emission Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials General Energy Physics - Chemical Physics Thermal Magnitude (astronomy) Particle size Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|