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Experimental and numerical studies on the receiving gain enhancement modulated by a sub-wavelength plasma layer

Plasma Science and Technology 2018年第9期20卷 133-139页

作者： Fanrong KONG Qiuyue NIE Guangye XU Xiaoning ZHANG Shu LIN Binhao JIANG School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin 150001People＇s Republic of China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin 150001People＇s Republic of China School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150001 People＇s Republic of China

A novel technique based on sub-wavelength plasma structure effects on enhancement of RF communication signals on a receiving antenna is carried out in this paper in laboratory experiments and analyzed by corresponding numerical *** intensification on receiving signal gain up to -10 d B in comparison with that without the plasma modulation is observed experimentally in -1 GHz RF band,with an effective enhancement bandwidth of -340 MHz and the fractional bandwidth of -34%.Then,the optimal modulation parameters of plasma are further studied by a numerical *** is shown that the number density,the layer thickness,and the collision frequency of the plasma,as well as the relative distance between the plasma layer and antenna synergistically affect the *** to the metallic antenna with the same overall dimension,the modulated antenna covered by the subwavelength plasma structure features higher receiving efficiency and lower radar cross section in the studied RF *** mechanism of the reception enhancement is further revealed by analyzing characteristics of electromagnetic scattering and electric field distribution in the subwavelength plasma *** results then exhibit scientific significance and application potential of sub-wavelength plasma modulation on compact receiving antennas with higher performance and better feature of radar stealth.

关键词： sub-wavelength plasma structure electromagnetic radiation modulation receiving gain enhancement local surface plasmon resonance

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A vivid Au-porous anodic alumina composite film with the inverted taper structure for label-free detection

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Nano Research 2023年第7期16卷 9997-10003页

作者： Zhumin Yu Kai Zhao Lin Li Changqing Ye Yuxiang Dong Yanlin Song School of Materials Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190China

localized surface plasmon resonance(LSPR)has been widely used in medical detection because of its time effectiveness,noninvasiveness,high sensitivity,and relatively simple fabrication *** anodic alumina(PAA)can be regarded as a plasma substrate for label-free detection due to its unique two-dimensional *** this work,a vivid Au-PAA composite film with the inverted taper structure was developed by multi-step anodic oxidation and pore-widening processes followed by magnetron sputtering with Au nanoparticles(AuNPs).The highly saturated and bright structural color was generated by the synergistic effect of photonic and plasmonic ***,various Au-PAA composite films with structural colors altering from purple to red were obtained via adjusting the height/diameter ratio of *** from the inverted taper structure,light trap characteristics were effectively enhanced by increasing the incident light and reducing the diffuse *** addition,a finite difference time domain(FDTD)model was proposed to predict the relationship between the reflectance peak and the height of the composite film,and the simulated data were in good agreement with the experimental *** a proof of concept,labelfree detections of various reagents(water,ethanol,glycol,glycerol,and glucose),the concentration of glucose(refractive index sensitivity of 376 nm/RIU,RIU:refractive index unit),and thrombin(detection limit of 0.1×10^(-7)mol/L)were realized by the Au-PAA composite *** vivid Au-PAA composite film provides a very powerful tool for in-situ label-free bio-detection.

关键词： porous anodic alumina local surface plasmon resonance label-free detection inverted taper structure

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Fluorescence enhancement of radix angelica dahurica by binding to single silver sphere

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Chinese Physics B 2015年第5期24卷 583-586页

作者：王青如史强李淑红王文军 School of Physical Science and Information Technology Liaocheng University Shandong Provinical Key Laboratory of Optical Communication Science and Technology

We present a theoretical study of the influence of a single silver sphere on the fluorescence of radix angelica dahurica, which is a kind of traditional Chinese medicine. The enhancement factors of the excitation and the relaxation processes are deduced. The excitation can be enhanced more than 100 times at 315 nm. The enhancement factor of the emission can reach up to 9 at a center wavelength of 400 nm.

关键词： silver sphere local surface plasmon resonance fluorescence enhancement radix angelica dahurica

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Study on surface Enhancement Fluorescence Effect of gold Nanoparticle Assembly Structure on Rough Copper Substrate surface

Study on Surface Enhancement Fluorescence Effect of gold Nan...

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第十九届全国光散射学术会议

作者： You Chen Xing Zhao Zhu Lu Qingyan Han Wei Gao Jun Dong School of Electronic Engineering Xi’an University of Posts and Telecommunications

＜正＞Gold nanoparticles（Au NPs）with different particle densities were assembled on copper substrate by simple mechanical polishing and self-assembly methods to prepare Au/Cu composite nanostructured SEF active

关键词： Complex nanostructure local surface plasmon resonance surface enhanced fluorescence

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The study of enhanced fluorescence effect from complex nanostructure decorated with the native oxide layer

The study of enhanced fluorescence effect from complex nanos...

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第十九届全国光散射学术会议

作者： Jun Dong You Chen Zhongyu Wang Wei Gao Jianxia Qi Qing Yan Han School of Electronic Engineering Xi’an University of Posts and Telecommunications

＜正＞The complex nanostructure,consisting of silver nanoparticles（AgNPs）and mechanically polished nanostructure copper surface（MPNCS）,was fabricated with physically polished and spin coating *** distance between

关键词： The complex nanostructure native oxide layer local surface plasmon resonance surface enhanced fluorescence

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