Different mass percent polyacrylonitrile （PAN）-polyethylene oxide （PEO） gels were prepared and irradiated by an electron beam （EB） with energy of 1.0 MeV to the dose ranging from 13 kGy to 260 kGy. The gels were...Different mass percent polyacrylonitrile （PAN）-polyethylene oxide （PEO） gels were prepared and irradiated by an electron beam （EB） with energy of 1.0 MeV to the dose ranging from 13 kGy to 260 kGy. The gels were analysed by using Fourier transform infrared spectrum, gel fraction and ionic conductivity （IC） measurement. The results show that the gel is crosslinked by EB irradiation, the crosslinking degree rises with the increasing EB irradiation dose （ID） and the mass percents of both PAN and PEO contribute a lot to the crosslinking; in addition, EB irradiation can promote the IC of PAN-PEO gels. There exists an optimum irradiation dose, at which the IC can increase dramatically. The IC changes of the PAN-PEO gels along with ID are divided into three regions： IC rapidly increasing region, IC decreasing region and IC balanced region. The cause of the change can be ascribed to two aspects, gel capturing electron degree and crosslinking degree. By comparing the IC-ID curves of different mass percents of PAN and PEO in gel, we found that PAN plays a more important role for gel IC promotion than PEO, since addition of PAN in gel causes the IC-ID curve sharper, while addition of PEO in gel causes the curve milder.展开更多
s:The wheat seeds are pretreated by means of super low energy ionic beams(500eV).Field planting and indoor trial raising as well as the electrophoreses analsis of isodynamic enzyme of the wheat have shown:isodynamic e...s:The wheat seeds are pretreated by means of super low energy ionic beams(500eV).Field planting and indoor trial raising as well as the electrophoreses analsis of isodynamic enzyme of the wheat have shown:isodynamic enzyme belt is changed,and the effective wheat ear numbers as well as the output per mu are also evidently increased. Maximum increase in production in small scale test can be up to 21 8%.展开更多
We fabricated a silver ion emitter based on the solid state electrolyte film of RbAg4 I5 prepared by pulsed laser deposition. The RbAg4 I5 target for PLD process was mechano-chemically synthesized by high-energy ball ...We fabricated a silver ion emitter based on the solid state electrolyte film of RbAg4 I5 prepared by pulsed laser deposition. The RbAg4 I5 target for PLD process was mechano-chemically synthesized by high-energy ball milling in Ar atmosphere using β-AgI and RbI as raw materials. The ion-conducting properties of RbAg4 I5 were studied by alternating current(AC) impedance spectroscopy and the ionic conductivity at room temperature was estimated 0.21 S/m. The structure, morphology, and elemental composition of the RbAg4 I5 film were investigated. The Ag+ ion-conducting property of the prepared superioni-conductor film was exploited for ion–beam generation. The temperature and accelerating voltage dependences of the ion current were studied. Few nA current was obtained at the temperature of 196?C and the accelerating voltage of 10 kV.展开更多
With the aim of producing all-solid-state electrochromic mirrors, La<sub>0.67–x</sub>Li<sub>3x</sub>TiO<sub>3 </sub>(LLTO) and the WO<sub>3</sub> were prepared by elect...With the aim of producing all-solid-state electrochromic mirrors, La<sub>0.67–x</sub>Li<sub>3x</sub>TiO<sub>3 </sub>(LLTO) and the WO<sub>3</sub> were prepared by electron beam deposition. The LLTO (with x = 0.11) powder was synthesized by thermally ball-grinding method and the Li<sup>+</sup> ionic conductivity of the LLTO ceramic targets was found to be of ca. 3.25 × 10<sup>–3</sup> S/cm. Using LLTO targets for e-beam evaporation, 300 nm-thick films with the Li<sup>+</sup> ionic conductivity of 5.50 × 10<sup>–5</sup> S/cm were deposited. Combining LLTO films with WO<sub>3</sub>/ITO and LiMn<sub>2</sub>O<sub>4</sub> layers, all-solid-state electrochromic mirrors with a laminar structure of Al/LiMn<sub>2</sub>O<sub>4</sub>/LLTO/WO<sub>3</sub>/ITO were prepared. The reversible reflectance of the mirrors was well controlled by applying polarized potentials onto the ITO electrode. The obtained results suggest useful applications for electrochromic windows working as a smart reflectance mirror that can be used for auto rear-view mirrors.展开更多
基金Project supported by the National Basic Research Program of China (Grant No.2010CB832902)the Key Program of the National Natural Science Foundation of China (Grant No.10835010)the Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences (Grant No.KJCX2-YW-N35)
文摘Different mass percent polyacrylonitrile （PAN）-polyethylene oxide （PEO） gels were prepared and irradiated by an electron beam （EB） with energy of 1.0 MeV to the dose ranging from 13 kGy to 260 kGy. The gels were analysed by using Fourier transform infrared spectrum, gel fraction and ionic conductivity （IC） measurement. The results show that the gel is crosslinked by EB irradiation, the crosslinking degree rises with the increasing EB irradiation dose （ID） and the mass percents of both PAN and PEO contribute a lot to the crosslinking; in addition, EB irradiation can promote the IC of PAN-PEO gels. There exists an optimum irradiation dose, at which the IC can increase dramatically. The IC changes of the PAN-PEO gels along with ID are divided into three regions： IC rapidly increasing region, IC decreasing region and IC balanced region. The cause of the change can be ascribed to two aspects, gel capturing electron degree and crosslinking degree. By comparing the IC-ID curves of different mass percents of PAN and PEO in gel, we found that PAN plays a more important role for gel IC promotion than PEO, since addition of PAN in gel causes the IC-ID curve sharper, while addition of PEO in gel causes the curve milder.
文摘s:The wheat seeds are pretreated by means of super low energy ionic beams(500eV).Field planting and indoor trial raising as well as the electrophoreses analsis of isodynamic enzyme of the wheat have shown:isodynamic enzyme belt is changed,and the effective wheat ear numbers as well as the output per mu are also evidently increased. Maximum increase in production in small scale test can be up to 21 8%.
基金Project supported by the National Natural Science Foundation of China(Grant No.11875210)China Postdoctoral Science Foundation(Grant No.2018M640724)+1 种基金the International Cooperation Program of Guangdong Provincial Science and Technology Plan Project(Grant No.2018A050506082)the Talent Project of Lingnan Normal University,China(Grant No.ZL1931)
文摘We fabricated a silver ion emitter based on the solid state electrolyte film of RbAg4 I5 prepared by pulsed laser deposition. The RbAg4 I5 target for PLD process was mechano-chemically synthesized by high-energy ball milling in Ar atmosphere using β-AgI and RbI as raw materials. The ion-conducting properties of RbAg4 I5 were studied by alternating current(AC) impedance spectroscopy and the ionic conductivity at room temperature was estimated 0.21 S/m. The structure, morphology, and elemental composition of the RbAg4 I5 film were investigated. The Ag+ ion-conducting property of the prepared superioni-conductor film was exploited for ion–beam generation. The temperature and accelerating voltage dependences of the ion current were studied. Few nA current was obtained at the temperature of 196?C and the accelerating voltage of 10 kV.
文摘With the aim of producing all-solid-state electrochromic mirrors, La<sub>0.67–x</sub>Li<sub>3x</sub>TiO<sub>3 </sub>(LLTO) and the WO<sub>3</sub> were prepared by electron beam deposition. The LLTO (with x = 0.11) powder was synthesized by thermally ball-grinding method and the Li<sup>+</sup> ionic conductivity of the LLTO ceramic targets was found to be of ca. 3.25 × 10<sup>–3</sup> S/cm. Using LLTO targets for e-beam evaporation, 300 nm-thick films with the Li<sup>+</sup> ionic conductivity of 5.50 × 10<sup>–5</sup> S/cm were deposited. Combining LLTO films with WO<sub>3</sub>/ITO and LiMn<sub>2</sub>O<sub>4</sub> layers, all-solid-state electrochromic mirrors with a laminar structure of Al/LiMn<sub>2</sub>O<sub>4</sub>/LLTO/WO<sub>3</sub>/ITO were prepared. The reversible reflectance of the mirrors was well controlled by applying polarized potentials onto the ITO electrode. The obtained results suggest useful applications for electrochromic windows working as a smart reflectance mirror that can be used for auto rear-view mirrors.
