Efficiency of detection of Cs<Superscript>+</Superscript> and Cl<Superscript>−</Superscript> ions with a ВЭУ-7-2 microchannel electron multiplier

The absolute values of the efficiency of detection of Cs⁺ and Cl^- ions with energies of 1600 eV have been measured with a ВЭУ-7-2 microchannel electron multiplier. The relative detection efficiencies as functions of the potential of the input surface of the microchannel plate have been assessed. It has been revealed that the absolute values of the efficiency of detection of Cl^- and Cs⁺ ions differ significantly and amount to 36 and 6%, respectively, at input ion currents of ≤2 × 10^?14 A.     

基于S7-1200升降横移式三层立体车库控制系统设计

随着城市机动车辆的增加,车多与车位少的矛盾日益突出,特别是没有地下车库的小区,车辆乱停、道路拥挤,消防、应急通道被占用等情况时有发生,严重影响了城市交通和居民安全。该文设计了一种全地上3×3×3三维矩阵结构的立体停车库,可停21辆车。该车库的系统软件采用S7-1200为控制核心,模块化设计,实现了车库的智能控制,能节约用地,有效缓解城市住宅小区车位少、停车难的问题。     

电场驱动μ-3D打印蜡基微流控模具

提出了一种基于电场驱动微尺度3D打印制备蜡基材料微结构的工艺。通过脉冲直流产生自激发静电场驱动皮升级体积石蜡微滴喷射沉积成形;研究了打印参数如气压、电场强度、脉冲频率及占空比等因素对于蜡模打印的影响;优化实验参数,制作了可用于PDMS转印的石蜡微模板,模板线宽为61.25 μm,高度为44.13 μm;结合微转印技术和等离子改性技术制作了微米级微流道芯片样件,并通过实验验证了其具备微流控芯片的基本特征。