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Full-Text Articles in Engineering
Analysis Of Nonlinear Graphene Plasmonics Using Surface Integral Equations, Ling Ling Meng, Tian Xia, Xiaoyan Y.Z. Xiong, Li (Lijun) Jun Jiang, Weng Cho Chew
Analysis Of Nonlinear Graphene Plasmonics Using Surface Integral Equations, Ling Ling Meng, Tian Xia, Xiaoyan Y.Z. Xiong, Li (Lijun) Jun Jiang, Weng Cho Chew
Electrical and Computer Engineering Faculty Research & Creative Works
Graphene plasmonics have attracted significant attention in the past few years due to the remarkable optical and electrical properties of graphene. A highly effective method based on surface integral equations (SIE) in the frequency domain is proposed to describe both linear and nonlinear effects of graphene efficiently and accurately. Graphene, a centrosymmet-ric material, can possess second harmonic generation (SHG) when the conductivity is nonlocal. In this work, the fundamental harmonic (FH) of a graphene wrapped particle is studied as the first benchmark by introducing a conducting surface in SIE. Then it is modified to analyze a graphene-based patch antenna in …
Effective Room-Temperature Ammonia-Sensitive Composite Sensor Based On Graphene Nanoplates And Pani, Zongbiao Ye, Yan Chen, Bohao Liu, Yuanjie Su, Zhi Chen, Huiling Tai, Yadong Jiang
Effective Room-Temperature Ammonia-Sensitive Composite Sensor Based On Graphene Nanoplates And Pani, Zongbiao Ye, Yan Chen, Bohao Liu, Yuanjie Su, Zhi Chen, Huiling Tai, Yadong Jiang
Electrical and Computer Engineering Faculty Publications
The graphene nanoplate (GN)-polyaniline (PANI) composite was developed via in-situ polymerization method and simultaneously assembled on interdigital electrodes (IDEs) at low temperature for ammonia (NH3) detection. The assembled composite sensor showed excellent sensing performance toward different concentrations of NH3, 1.5 of response value and 123 s/204 s for the response/recovery time to 15 ppm NH3. Meanwhile, an interesting supersaturation phenomenon was observed at high concentration of NH3. A reasonable speculation was proposed for this special sensing behavior and the mechanism for enhanced sensing properties was also analyzed.