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您的检索式：作者名="YIJIA GENG"
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| 1 | Boosting a sub-10 nm nanogap array by plasmon-triggered waveguide resonance显示文摘Gap-type metallic nanostructures are widely used in catalytic reactions,sensors,and photonics because the hotspot effect on these nanostructures supports giant local electromagnetic field enhancement.To achieve hotspots,researchers devote themselves to reducing gap distances,even to 1 nm.However,current techniques to fabricate such narrow gaps in large areas are still challenging.Herein,a new coupling way to boost the sub-10 nm plasmonic nanogap array is developed,based on the plasmon-triggered optical waveguide resonance via near-field coupling.This effect leads to an amplified local electromagnetic field within the gap regions equivalent to narrower gaps,which is evidenced experimentally by the surface-enhanced Raman scattering intensity of probed molecules located in the gap and the finite-difference time-domain numerical simulation results.This study provides a universal strategy to promote the performance of the existing hotspot configurations without changing their geometries. | YU TIAN HAILONG WANG YIJIA GENG LILI CONG YU LIU WEIQING XU SHUPING XU | 2020 | Photonics Research2020，8，12： | 0 |
| 2 | A Smartphone-assisted Paper-based Analytical Device for Fluorescence Assay of Hg2+显示文摘Rapid,efficiency and portable detection systems in low-resource settings with limited laboratory equipment and technical expertise are urgently needed.Herein,an integrated platform composed of a paper-based analytical device and a smartphone detection system for Hg^2+ onsite testing was developed.Nitrogen-doped carbon dots(N-CDs)were synthesized by a simple hydrothermal method using citric acid as the carbon source and ethanediamine as the nitrogen source,which gave out bright blue fluorescence under the excitation at 350 nm UV light and the absolute fluorescence quantum yield was 17.1%.The fluorescence of the prepared N-CDs can be effectively quenched by Hg^2+.In addition,an external attachment of smartphone for illumination and external light interference was designed to trace the fluorescence signals,and a software application of Android system with simple operation program was developed to perform snapshot and image processing.The smartphone-assisted detection system was combined with the N-CDs decorated paper chip to achieve the sensitive detection of Hg^2+ in water samples.This integrated method for reliable sensing of Hg^2+ shows a good linear detection range of 10–800μmol/L(R2=0.9595)with detection limit of 1.07×10^?8 mol/L. | YE Jiavven GENG Yijia CAO Fanghao SUN Dan XU Shuping CHANG Jingjing XU Weiqing CHEN Qidan | 2019 | Chemical Research in Chinese Universities2019，35，6： | 0 |
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