碳基红外吸收剂的光声特性
Photoacoustic characteristics of carbon-based infrared absorbers
摘要：
我们提出了一个实验比较常见的高吸收碳基材料的光声响应。与光声功率探测器和傅里叶变换红外（FTIR）光谱相关的参数进行了比较：我们覆盖了从可见红光到远红外（633 nm到25 um）的宽波长范围和低声频（< 1 kHz）的范围。所研究的材料包括基于蜡烛烟灰的涂层、黑色油漆涂层和两种不同的碳纳米管涂层。其中，低成本的烟尘吸收剂在整个测量范围内产生了最高的光声响应。
英文摘要：
We present an experimental comparison of photoacoustic responsivities of common highly absorbing carbon-based materials. The comparison was carried out with parameters relevant for photoacoustic power detectors and Fourier-transform infrared (FTIR) spectroscopy: we covered a broad wavelength range from the visible red to far infrared (633 nm to 25 um) and the regime of low acoustic frequencies (< 1 kHz). The investigated materials include a candle soot-based coating, a black paint coating and two different carbon nanotube coatings. Of these, the low-cost soot absorber produced clearly the highest photoacoustic response over the entire measurement range.
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