According to the common Glan-Taylor prism's design feature, Fresnel formulae and Brewster's law, a novel Glan -Taylor prism was designed and fabricated. In the new prism, the structure angles of second half we...According to the common Glan-Taylor prism's design feature, Fresnel formulae and Brewster's law, a novel Glan -Taylor prism was designed and fabricated. In the new prism, the structure angles of second half were modified to proper values so that extraordinary ray is incident on with Brewster angle. In order to minimize the deviation angle of the new prism, an additional angle was designed. Theory and experiments have confirmed that the transmittance of the new prism is higher than that of a common one in a wide wavelength range and the interference effect will not occur in the new prism. Experimentally, its deviation angle is smaller than 3′in the wavelength range of 540-670 nm.展开更多
Three electrodeposited Fe-Ni,Fe-Co,and Fe-Ni-Co cores of thin film transformer are prepared on silicon(100) substrates,which are sputtered a 90 nm thick film of Cu acting as the seed layer.The core films consisting of...Three electrodeposited Fe-Ni,Fe-Co,and Fe-Ni-Co cores of thin film transformer are prepared on silicon(100) substrates,which are sputtered a 90 nm thick film of Cu acting as the seed layer.The core films consisting of Fe-Ni 20:80,Fe-Co 60:40 and Fe-Ni-Co 10:60:30,respectively,are deposited using direct current electrodeposition.The surface texture,electrical and magnetic properties are surveyed by scanning electron microscopy(SEM),superconducting quantum interference device(SQUID),etc.The wave transmission ability and efficiency of thin film transformer with these cores,inputting the sine wave,are compared.All the analyses indicate that FeNi alloy films display the optimal magnetic properties and excellent transformer performance.展开更多
The tin whiskers spontaneously grew from the NdSn3 intermetallic compound(IMC) after exposure to ambient conditions.One such fine tin whisker with a diameter of about 600 nm was observed by transmission electron micro...The tin whiskers spontaneously grew from the NdSn3 intermetallic compound(IMC) after exposure to ambient conditions.One such fine tin whisker with a diameter of about 600 nm was observed by transmission electron microscope(TEM).The results showed the whisker was a perfect β-Sn single-crystal without dislocations or low angle grain boundaries.The whisker growth axis was calculated as [111].There were interference fringes in the bright-field image of the tin whisker,which reflected the existence of growth stress in the whisker.A 15-18 nm native tin-oxide film on the tin whisker containing many crystal defects was also found.The new results are helpful in understanding the tin whisker growth mechanism.展开更多
A new sub-micron photolithography tool has been realized by utilizing the interference of surface plasmon waves(SPWs) on the near surface of a silver(Ag)-clad ultraviolet(UV) planar waveguide.A laser beam with a wavel...A new sub-micron photolithography tool has been realized by utilizing the interference of surface plasmon waves(SPWs) on the near surface of a silver(Ag)-clad ultraviolet(UV) planar waveguide.A laser beam with a wavelength of 325 nm was incident into the waveguide core,and suffered a series of total internal reflections on the interfaces between the waveguide core and the cladding layers.The incident light and the reflected light induced two beams of SPWs traveling in contrary directions,which interfered with each other and formed a standing wave as a sub-micron photolithography tool.A near-field scanning optical microscope(NSOM) was employed to measure the intensity distribution of the stationary wave field of the near surface of the Ag layer of the waveguide,anastomosed with theoretical values acquired by use of finite difference time domain(FDTD) simulations.And with this sub-micron photolithography tool a SMG with a period of 79.3 nm,in good agreement with the theoretical value of 80.1 nm,was inscribed on the surface of a self-processing hybrid SiO2/ZrO2 solgel film for the first time.展开更多
文摘According to the common Glan-Taylor prism's design feature, Fresnel formulae and Brewster's law, a novel Glan -Taylor prism was designed and fabricated. In the new prism, the structure angles of second half were modified to proper values so that extraordinary ray is incident on with Brewster angle. In order to minimize the deviation angle of the new prism, an additional angle was designed. Theory and experiments have confirmed that the transmittance of the new prism is higher than that of a common one in a wide wavelength range and the interference effect will not occur in the new prism. Experimentally, its deviation angle is smaller than 3′in the wavelength range of 540-670 nm.
基金supported by the National Natural Science Foundation of China (Grant No. 60874101)
文摘Three electrodeposited Fe-Ni,Fe-Co,and Fe-Ni-Co cores of thin film transformer are prepared on silicon(100) substrates,which are sputtered a 90 nm thick film of Cu acting as the seed layer.The core films consisting of Fe-Ni 20:80,Fe-Co 60:40 and Fe-Ni-Co 10:60:30,respectively,are deposited using direct current electrodeposition.The surface texture,electrical and magnetic properties are surveyed by scanning electron microscopy(SEM),superconducting quantum interference device(SQUID),etc.The wave transmission ability and efficiency of thin film transformer with these cores,inputting the sine wave,are compared.All the analyses indicate that FeNi alloy films display the optimal magnetic properties and excellent transformer performance.
基金supported by the National Natural Science Foundation of China (Grant No 50871119)
文摘The tin whiskers spontaneously grew from the NdSn3 intermetallic compound(IMC) after exposure to ambient conditions.One such fine tin whisker with a diameter of about 600 nm was observed by transmission electron microscope(TEM).The results showed the whisker was a perfect β-Sn single-crystal without dislocations or low angle grain boundaries.The whisker growth axis was calculated as [111].There were interference fringes in the bright-field image of the tin whisker,which reflected the existence of growth stress in the whisker.A 15-18 nm native tin-oxide film on the tin whisker containing many crystal defects was also found.The new results are helpful in understanding the tin whisker growth mechanism.
基金supported by the Natural Science Foundation of Guangdong Province, China (Grant Nos.8251063101000007, 10151063101000009,and 9451063101002082)the Scientific and Technological Plan of Guangdong Province (Grant Nos.2008B010200004, 2010B010600030, and 2009B011100003)the National Natural Science Foundation of China (Grant Nos.61078046 and 60977048)
文摘A new sub-micron photolithography tool has been realized by utilizing the interference of surface plasmon waves(SPWs) on the near surface of a silver(Ag)-clad ultraviolet(UV) planar waveguide.A laser beam with a wavelength of 325 nm was incident into the waveguide core,and suffered a series of total internal reflections on the interfaces between the waveguide core and the cladding layers.The incident light and the reflected light induced two beams of SPWs traveling in contrary directions,which interfered with each other and formed a standing wave as a sub-micron photolithography tool.A near-field scanning optical microscope(NSOM) was employed to measure the intensity distribution of the stationary wave field of the near surface of the Ag layer of the waveguide,anastomosed with theoretical values acquired by use of finite difference time domain(FDTD) simulations.And with this sub-micron photolithography tool a SMG with a period of 79.3 nm,in good agreement with the theoretical value of 80.1 nm,was inscribed on the surface of a self-processing hybrid SiO2/ZrO2 solgel film for the first time.
