African entrepreneurs are committed to develop clean energy andprotect the environmentTHE 22nd Conference of the Parties（COP22）to the United Nations Framework Convention on Climate Change held in Marrakech,Morocco w...African entrepreneurs are committed to develop clean energy andprotect the environmentTHE 22nd Conference of the Parties（COP22）to the United Nations Framework Convention on Climate Change held in Marrakech,Morocco was dubbed the＂COP of action,＂but it was also the＂COP for Africa,＂providing the opportunity for the continent to lead the way in renewable energy development to fight climate change.展开更多
In this letter, we propose a method for the numerical calculations of the femtosecond laser pulse passed through a subwavelength aperture. The time-dependent laser pulse is decomposed into a series of monochromatic si...In this letter, we propose a method for the numerical calculations of the femtosecond laser pulse passed through a subwavelength aperture. The time-dependent laser pulse is decomposed into a series of monochromatic simple harmonic waves. For the light field of the harmonic wave with a single frequency, the numerical calculation is made based on the solution of the Green's integral equation set of the electromagnetic waves. Such numerical solution is iterated for all the waves with different frequencies, and all the numerical solutions are transformed into the light fields in the time domain by inverse Fourier transform. The light intensity distributions transmitted the subwavelength aperture are calculated and the results show the propagation of the light field is along the direction of the medium interface.展开更多
Fourier transform method is used to obtain an approximate solution of Green's tensor to homogeneous and transversely isotropic media like unidirectional fiber re-inforced composites and austenitic stainless steel...Fourier transform method is used to obtain an approximate solution of Green's tensor to homogeneous and transversely isotropic media like unidirectional fiber re-inforced composites and austenitic stainless steel materials in order to provide the theoretical basis for the scattering problems. A comparison to homogeneously isotropic media is presented and a brief discussion of the main features of the solution is given展开更多
文摘African entrepreneurs are committed to develop clean energy andprotect the environmentTHE 22nd Conference of the Parties（COP22）to the United Nations Framework Convention on Climate Change held in Marrakech,Morocco was dubbed the＂COP of action,＂but it was also the＂COP for Africa,＂providing the opportunity for the continent to lead the way in renewable energy development to fight climate change.
文摘In this letter, we propose a method for the numerical calculations of the femtosecond laser pulse passed through a subwavelength aperture. The time-dependent laser pulse is decomposed into a series of monochromatic simple harmonic waves. For the light field of the harmonic wave with a single frequency, the numerical calculation is made based on the solution of the Green's integral equation set of the electromagnetic waves. Such numerical solution is iterated for all the waves with different frequencies, and all the numerical solutions are transformed into the light fields in the time domain by inverse Fourier transform. The light intensity distributions transmitted the subwavelength aperture are calculated and the results show the propagation of the light field is along the direction of the medium interface.
文摘Fourier transform method is used to obtain an approximate solution of Green's tensor to homogeneous and transversely isotropic media like unidirectional fiber re-inforced composites and austenitic stainless steel materials in order to provide the theoretical basis for the scattering problems. A comparison to homogeneously isotropic media is presented and a brief discussion of the main features of the solution is given
