Absorption Spectroscopy and Imaging from the Visible through Mid-Infrared with 20 nm Resolution
Absorption Spectroscopy and Imaging from the Visible through Mid-Infrared with 20 nm Resolution
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DOI：
10.1021/ac504672t
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发表时间：
2015-03-17
影响因子：
7.4
通讯作者：
Centrone, Andrea
中科院分区：
文献类型：
--
作者：
Katzenmeyer, Aaron M.;Holland, Glenn;Centrone, Andrea
通过光热诱导共振技术，实现了从可见光到中红外波长的吸收光谱和图谱，空间分辨率超过了衍射的限制。相关的振动(化学)和电学性质与地形同步获得，分辨率与波长无关，约为20纳米，使用单一的实验室规模的仪器。这标志着报告的PTIR的最高分辨率，通过比较高度和PTIR图像确定，并首次将其扩展到近红外和可见光波长。
Absorption spectroscopy and mapping from visible through mid-IR wavelengths has been achieved with spatial resolution exceeding the limit imposed by diffraction via the photothermal induced resonance technique. Correlated vibrational (chemical), and electronic properties are obtained simultaneously with topography with a wavelength-independent resolution of approximate to 20 nm using a single laboratory-scale instrument. This marks the highest resolution reported for PTIR, as determined by comparing height and PTIR images, and its first extension to near-IR and visible wavelengths.