微波辐射对不同直径多壁碳纳米管的影响
Effects of Microwave Irradiation on Multiwalled Carbon Nanotubes of Different Diameters
摘要：
我们研究了不同直径的多壁碳纳米管在2.45 GHz微波下发射的可见光和红外辐射。光谱的比较表明，具有较大直径的多壁碳纳米管比具有较小直径的多壁碳纳米管发射更大强度的辐射。此外，多壁碳纳米管在几个微波照射循环的过程中继续发射可见光和红外辐射，而发射的辐射强度没有降低。拉曼D-带与G-带峰值强度比的比较显示，微波照射并没有显著影响多壁碳纳米管的缺陷密度。我们的实验结果表明，多壁碳纳米管可能具有用于照明技术的潜力，并且由多壁碳纳米管在微波场中的极化引起的欧姆加热可能是观测到的可见光和红外辐射的发射的原因。
英文摘要：
We have studied the visible and infrared radiation emitted by multi-walled carbon nano-tubes of different diameters when exposed to 2.45 GHz microwaves. A comparison of the spectra suggests that multi-walled carbon nano-tubes with larger diameters emit radiation of greater intensity than those with smaller diameters. Furthermore, the multi-walled carbon nano-tubes continued to emit visible and infrared radiation over the course of several microwave-irradiation cycles, with no degradation in the intensity of the emitted radiation. A comparison of Raman D- to G-band peak-intensity ratios revealed that microwave-irradiation did not significantly impact the multi-walled carbon nano-tubes' defect densities. The results of our experiments suggest that multi-walled carbon nano-tubes may have the potential for use in lighting technologies, and that ohmic heating caused by the polarization of the multi-walled carbon nano-tubes in the microwave field is likely responsible for the observed emissions of visible and infrared radiation.
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。
