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Thermal radiation from C(N)+ and La@C(N)+
1Department of Physics, Göteborg University, SE-41296 Göteborg, Sweden.
The Journal of Chemical Physics
|August 13, 2005
Summary
Researchers measured radiative cooling in fullerene fragments using a time-of-flight mass spectrometer. Emissivity values align with surface plasmon calculations, showing no significant difference between empty and endohedral fullerenes.
Area of Science:
- Physical chemistry
- Materials science
- Nanotechnology
Background:
- Fullerenes are carbon-based nanomaterials with unique electronic properties.
- Understanding their radiative cooling is crucial for applications in electronics and energy.
Purpose of the Study:
- To measure the radiative cooling of charged fullerene and endohedral fullerene fragments.
- To compare experimental emissivity with theoretical calculations based on surface plasmons.
- To investigate differences in radiative emission between empty and endohedral fullerenes.
Main Methods:
- Utilized a time-of-flight mass spectrometer to measure radiative cooling.
- Analyzed metastable decay influenced by radiative cooling.
- Extracted emissivity values from experimental data.
Main Results:
- Measured emissivity values ranged from 4x10^-4 to 13x10^-4.
- Experimental emissivity showed good agreement with calculations considering the low-energy surface plasmon tail.
- No significant differences in emission behavior were observed between empty and endohedral fullerenes.
Conclusions:
- Radiative cooling in fullerenes can be accurately measured via metastable decay.
- Surface plasmon interactions play a key role in fullerene radiative cooling.
- The encapsulation of atoms within fullerenes does not substantially alter their radiative emission properties.