| A solution-based nano-plasmonic sensing technique by using gold nanorods. | |
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MedLine Citation:
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PMID: 22479700 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We have successfully demonstrated a novel sensing technique for monitoring the variation of solution concentrations and measuring the effective dielectric constant in a medium by means of an ultra-small and label-free nanosensor, the mechanism of which is based on the localized surface plasmon resonance (LSPR) of gold nanorods. The nanorods are fabricated in a narrow size distribution, which is characterized by transmission electron microscopy and optical absorption spectroscopy. In addition, we employ a simple analytical calculation to examine the LSPR band of the absorption spectrum, which provides excellent consistency with aspect ratio. The plasmonic sensing is performed by detecting the diffusion process and saturation concentration of hexadecyltrimethylammonium bromide in water, and tracing the effective dielectric constants of the medium simultaneously. This promising sensing and analytical technique can be easily used for investigating the nano-scale variations of mixing or reaction process in a micro/nanofluidic channel or the biological interaction in the cytoplasm of the cell. |
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Authors:
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Fu Han Ho; Yung-Han Wu; Masaki Ujihara; Toyoko Imae |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-5 |
Journal Detail:
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Title: The Analyst Volume: - ISSN: 1364-5528 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372652 Medline TA: Analyst Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan, R.O.C. fuhanho@mail.ntust.edu.tw. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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