2008年12月
Interference terahertz label-free imaging for protein detection on a membrane
OPTICS EXPRESS
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- 巻
- 16
- 号
- 26
- 開始ページ
- 22083
- 終了ページ
- 22089
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OE.16.022083
- 出版者・発行元
- OPTICAL SOC AMER
We demonstrate a highly sensitive imaging method combined a terahertz time-domain spectroscopy and an interference effect for label-free protein detection on a polyvinylidene difluoride membrane. The method is based on terahertz time-domain spectroscopy and uses an interference effect. Biotin is linked to the membrane using poly ethylene glycol or poly ethylene glycol methyl ether to prevent it from being washed off. Binding of the biotin with streptavidin is then observed by measuring the terahertz signal change due to the variation of the membrane refractive index. We demonstrate the detection of the binding streptavidin protein in gradually decreasing concentrations, down to 27 ng mm(-2), using the image recorded at 1.5 THz. (C) 2008 Optical Society of America
- リンク情報
- ID情報
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- DOI : 10.1364/OE.16.022083
- ISSN : 1094-4087
- Web of Science ID : WOS:000262200700096