Liang Tsai-ping

Kuo-Huang, Han

doi:10.1093/gmo/9781561592630.article.48754

Cited by 1 publication

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“…Probably, its most significant application is its use in nanosensors. Most of the strategies used to turn a plasmonic device into a sensor are based on the shift of the resonant position of the LSP [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] or in exploiting hot spots to increase spectroscopic signals. [23][24][25][26] In this respect, there is a growing interest in using interacting plasmonic systems to measure distances at the nanoscale.…”

Section: Introductionmentioning

confidence: 99%

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Excitation-Transfer Plasmonic Nanosensors Based on Dynamical Phase Transitions

2012

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Dynamical Phase transitions (DPTs) describe the abrupt change in the dynamical properties of open systems when a single control parameter is slightly modified. Recently we found that this phenomenon is also present in a simple model of a linear array of metallic nanoparticles (NPs) in the form of a localized-delocalized DPT. In this work we show how to take advantage of DPTs in order to design a new kind of plasmonic sensor which should own some unique characteristics. For example, if it were used as plasmon ruler it would not follow the so called universal plasmon ruler equation [Nano Letters 2007, 7, 2080-2088], exhibiting instead an on-off switching feature. This basically means that a signal should only be observed when the control/measured parameter, i.e. a distance in the case of plasmon rulers, has a very precise and pre-determined value. Here, we demonstrate their feasibility and unique characteristics, showing that they combine high sensitivity with this on-off switching feature in terms of different distances and local dielectric constants. This property has the potentiality to be used in the design of new plasmonic devices such as plasmonic circuits activated only under certain environmental conditions.

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Section: Introductionmentioning

confidence: 99%

“…7 Only when NPs are almost touching each other, there are some deviations, nonfitable to exponential, of the UPRE. 13,14 There is another kind of plasmon rulers that is now being actively investigated. They are based on a different principle, the fluorescence resonance energy transfer (FRET).…”

Section: Introductionmentioning

confidence: 99%