News Column

Investigators at CeNS Detail Findings in DNA Research

June 24, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- Research findings on DNA Research are discussed in a new report. According to news reporting originating in Munich, Germany, by NewsRx journalists, research stated, "We report that plasmonic nanoantennas made by DNA origami can be used as reliable and efficient probes for surface-enhanced Raman spectroscopy (SERS). The nanoantenna is built up by two gold nanoparticles that are linked together by a three-layered DNA origami block at a separation distance of 6 nm in order to achieve plasmonic coupling and the formation of a plasmonic 'hot spot."

The news reporters obtained a quote from the research from CeNS, "The plasmonic properties of the hybrid structure are optically characterized by dark-field imaging and polarization-dependent spectroscopy. SERS measurements on molecules that are embedded in the DNA origami that bridges the nanoantenna gap were performed in order to demonstrate the excellent performance of these structures for enhancing spectroscopic signals. A strong enhancement of the Raman signal was recorded from measurements on single hot spots compared to measurements in bulk."

According to the news reporters, the research concluded: "Finally, we show that the laser polarization with respect to the dimer orientation has a strong impact on the SEAS performance."

For more information on this research see: Plasmonic DNA-Origami Nanoantennas for Surface-Enhanced Raman Spectroscopy. Nano Letters, 2014;14(5):2914-2919. Nano Letters can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Nano Letters - www.pubs.acs.org/journal/nalefd)

Our news correspondents report that additional information may be obtained by contacting P. Kuhler, LMU Munchen, CeNS, D-80539 Munich, Germany. Additional authors for this research include E.M. Roller, R. Schreiber, T. Liedl, T. Lohmuller and J. Feldmann (see also DNA Research).

Keywords for this news article include: Munich, Europe, Germany, DNA Research

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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