Photothermal spectroscopy using multilayer cantilever for chemical detection

被引：24
作者：
Li, GM
Burggraf, LW
Baker, WP
机构：
[1] USAF, Inst Technol, Dept Engn Phys, Wright Patterson AFB, OH 45344 USA
[2] USAF, Inst Technol, Dept Math & Stat, Wright Patterson AFB, OH 45344 USA
来源：
APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 09期
关键词：
D O I：
10.1063/1.125988
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Photothermal spectroscopy is demonstrated using a high-aspect-ratio multilayer cantilever to measure adsorbed dimethyl methylphosphonate, which has an optical absorbance of similar to 10(-5) in the near infrared range. Detection sensitivity was 160 pW for a reed of 6 mm in length, 2 mm in width, and 10 mu m. Sensitivity of the cantilever is compared to a thermal diffusion model that accounts for conduction loss through the cantilever clamp and to air along the length of the cantilever surface. [S0003-6951(00)02309-3].
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页码：1122 / 1124
页数：3
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