Electric Field Assisted Surface Plasmon-Coupled Directional Emission: An Active Strategy on Enhancing Sensitivity for DNA Sensing and Efficient Discrimination of Single Base Mutation

2011 ◽  
Vol 133 (6) ◽  
pp. 1787-1789 ◽  
Author(s):  
Shuo-Hui Cao ◽  
Tang-Tang Xie ◽  
Wei-Peng Cai ◽  
Qian Liu ◽  
Yao-Qun Li
Keyword(s):  
Electric Field ◽  
Surface Plasmon ◽  
Dna Sensing ◽  
Single Base ◽  
Active Strategy ◽  
Directional Emission

GENERATION OF ULTRASHORT ELECTRON BUNCHES IN NANOSTRUCTURES BY FEMTOSECOND LASER PULSES

2007 ◽  
Vol 17 (03) ◽  
pp. 571-576
Author(s):  
A. GLADUN ◽  
V. LEIMAN ◽  
A. ARSENIN ◽  
O. MANNOUN ◽  
V. TARAKANOV
Keyword(s):  
Thin Film ◽  
Laser Radiation ◽  
Femtosecond Laser ◽  
Electric Field ◽  
Surface Plasmon ◽  
Laser Pulses ◽  
Photoelectric Effect ◽  
Femtosecond Laser Pulses ◽  
Electron Bunches ◽  
Internal Photoelectric Effect

We present numerical investigation of anomalous internal photoelectric effect which is realized in thin film (< 100 nm) structures by surface plasmon (SP) excitation and its interaction with primary laser radiation. SP electric field gain and electron temperature in the SP field have been calculated.

scholarly journals Tunable and Anisotropic Dual-Band Metamaterial Absorber Using Elliptical Graphene-Black Phosphorus Pairs

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Yijun Cai ◽  
Shuangluan Li ◽  
Yuanguo Zhou ◽  
Xuanyu Wang ◽  
Kai-Da Xu ◽  
...  
Keyword(s):  
Electric Field ◽  
Surface Plasmon ◽  
Infrared Region ◽  
Metamaterial Absorber ◽  
Black Phosphorus ◽  
Dual Band ◽  
Polarization Sensitivity ◽  
Surface Plasmon Resonances ◽  
Field Distributions ◽  
Plasmon Resonances

AbstractWe numerically propose a dual-band absorber in the infrared region based on periodic elliptical graphene-black phosphorus (BP) pairs. The proposed absorber exhibits near-unity anisotropic absorption for both resonances due to the combination of graphene and BP. Each of the resonances is independently tunable via adjusting the geometric parameters. Besides, doping levels of graphene and BP can also tune resonant properties effectively. By analyzing the electric field distributions, surface plasmon resonances are observed in the graphene-BP ellipses, contributing to the strong and anisotropic plasmonic response. Moreover, the robustness for incident angles and polarization sensitivity are also illustrated.

scholarly journals Use of Surface Plasmon-Coupled Emission to Measure DNA Hybridization

2004 ◽  
Vol 9 (3) ◽  
pp. 208-215 ◽  
Author(s):  
Joanna Malicka ◽  
Ignacy Gryczynski ◽  
Zygmunt Gryczynski ◽  
Joseph R. Lakowicz
Keyword(s):  
Surface Plasmon ◽  
Dna Hybridization ◽  
Silver Film ◽  
Angle Of Incidence ◽  
New Approach ◽  
Real Time Measurement ◽  
Directional Emission ◽  
Highly Sensitive ◽  
Resonance Coupling ◽  
Efficient Transfer

The authors describe a new approach to measuring DNA hybridization based on surface plasmon-coupled emission (SPCE). SPCE is the resonance coupling of excited fluorophores with electron motions in thin metal films, resulting in efficient transfer of energy through the film and radiation into the glass substrate. The authors evaluated the use of SPCE for detection of DNA hybridization. An unlabeled capture biotinylated oligonucleotide was attached near the surface of a thin (50 nm) silver film using streptavidin. The authors then measured the emission intensity of single-stranded Cy5-labeled DNA upon binding to a complementary oligomer attached to a silver film. Hybridization could be detected by an increase in SPCE, which appeared as light radiated into the substrate at a sharply defined angle near 73 degrees from the normal. The largest signals were observed when the excitation angle of incidence equaled the surface plasmon wavelength, but directional emission was also observed without excitation by the surface plasmon evanescent field. The increased intensity is due to proximity to the metal surface, so that hybridization can be detected without a change in the quantum yield of the fluorophore. These results indicate that SPCE can provide highly sensitive real-time measurement of DNA hybridization.

Low Electric Field Intensity and Thermotropic Tuning Surface Plasmon Band Shift of Gold Island Film by Liquid Crystals

2012 ◽  
Vol 116 (4) ◽  
pp. 2720-2727 ◽  
Author(s):  
Jing Xie ◽  
Xuemin Zhang ◽  
Zenghui Peng ◽  
Zhanhua Wang ◽  
Tieqiang Wang ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Electric Field ◽  
Surface Plasmon ◽  
Field Intensity ◽  
Electric Field Intensity ◽  
Island Film ◽  
Surface Plasmon Band ◽  
Band Shift ◽  
Plasmon Band
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