This paper presents the evaluation of the capacitance of an isolated elliptical plate and two parallel elliptical plates. Integral equations are formed by relating the previously unknown charges on the elliptical plat...This paper presents the evaluation of the capacitance of an isolated elliptical plate and two parallel elliptical plates. Integral equations are formed by relating the previously unknown charges on the elliptical plates and the potential on the metallic plates. The integral equations are solved by applying the method of moments based on the pulse function and point matching. The elements of the matrix in the method of moments are found by dividing the structure into triangular subsections. The matrix equation is solved in order to compute the unknown charges on each subsection. Numerical results on the capacitance as a function of the geometrical parameters of the ellipse are presented.展开更多
We theoretically investigate the influence of the shape of nanoholes on plasmonic behaviours in coupled elliptical metallic nanotube arrays by the finite-difference time-domain （FDTD） method. We study the structure ...We theoretically investigate the influence of the shape of nanoholes on plasmonic behaviours in coupled elliptical metallic nanotube arrays by the finite-difference time-domain （FDTD） method. We study the structure in two cases： one for the array aligned along the minor axis and the other for the array aligned along the major axis. It is found that the optical properties and plasmonic effects can be tuned by the effective surface charges as a result of the variation in the minor axis length. Based on the localized nature of electric field distributions, we also clearly show that the presence of localized plasmon resonant modes originates from multipolar plasmon polaritons and a large magnitude of opposing surface charges build up in the gap between adjacent nanotubes.展开更多
The patient was a 41-year-old woman experiencing severe lumbago for several years. The physician-in-charge referred her for dental treatment because examination did not reveal any specific abnormality in her lower bac...The patient was a 41-year-old woman experiencing severe lumbago for several years. The physician-in-charge referred her for dental treatment because examination did not reveal any specific abnormality in her lower back. Prior to the treatment, the patient could barely bend forward and backward because of serious back pain. Her body flexibility and lower back pain improved when a gold alloy cast crown was placed near her feet. However, when the crown was covered with aluminum foil, it was again very difficult for her to bend her body forward and backward. These results suggested that her body reacted positively because good electromagnetic waves emitted by the crown were absorbed by the body. The alloy used to make the crown was chosen using the Bi-Digital O-Ring Test. Moreover, the shape, contact strength, and occlusion (biting condition) of the crown were also determined by the Bi-Digital O-Ring Test. After the crown was placed on her upper right first molar, her lumbago completely disappeared and did not recur for >5 years of follow-up. The effectiveness of electromagnetic waves on the condition of the body, as in this case, has not often been acknowledged in modern medicine, and the underlying mechanism remains unclear;therefore, further research is required.展开更多
文摘This paper presents the evaluation of the capacitance of an isolated elliptical plate and two parallel elliptical plates. Integral equations are formed by relating the previously unknown charges on the elliptical plates and the potential on the metallic plates. The integral equations are solved by applying the method of moments based on the pulse function and point matching. The elements of the matrix in the method of moments are found by dividing the structure into triangular subsections. The matrix equation is solved in order to compute the unknown charges on each subsection. Numerical results on the capacitance as a function of the geometrical parameters of the ellipse are presented.
基金Project supported by the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20100162110068)the Graduate Education Innovation Project of Central South University (Grant No. 2010ssxt010)the Hunan Provincial Innovation Foundation for Postgraduate (Grant No. CX2009B029)
文摘We theoretically investigate the influence of the shape of nanoholes on plasmonic behaviours in coupled elliptical metallic nanotube arrays by the finite-difference time-domain （FDTD） method. We study the structure in two cases： one for the array aligned along the minor axis and the other for the array aligned along the major axis. It is found that the optical properties and plasmonic effects can be tuned by the effective surface charges as a result of the variation in the minor axis length. Based on the localized nature of electric field distributions, we also clearly show that the presence of localized plasmon resonant modes originates from multipolar plasmon polaritons and a large magnitude of opposing surface charges build up in the gap between adjacent nanotubes.
文摘The patient was a 41-year-old woman experiencing severe lumbago for several years. The physician-in-charge referred her for dental treatment because examination did not reveal any specific abnormality in her lower back. Prior to the treatment, the patient could barely bend forward and backward because of serious back pain. Her body flexibility and lower back pain improved when a gold alloy cast crown was placed near her feet. However, when the crown was covered with aluminum foil, it was again very difficult for her to bend her body forward and backward. These results suggested that her body reacted positively because good electromagnetic waves emitted by the crown were absorbed by the body. The alloy used to make the crown was chosen using the Bi-Digital O-Ring Test. Moreover, the shape, contact strength, and occlusion (biting condition) of the crown were also determined by the Bi-Digital O-Ring Test. After the crown was placed on her upper right first molar, her lumbago completely disappeared and did not recur for >5 years of follow-up. The effectiveness of electromagnetic waves on the condition of the body, as in this case, has not often been acknowledged in modern medicine, and the underlying mechanism remains unclear;therefore, further research is required.
基金supported by the National Natural Science Foundation of China(Grant Nos.12141202 and 12202205)Fundamental Research Funds for the Central Universities(Grant No.30919011401).
