针对蔡司快速超高分辨激光共聚焦显微镜(LSM 900 with Airyscan2)的成像性能优化问题,该研究系统探究了激光功率、探测器增益、像素驻留时间、平均采样次数及Airyscan成像模式选择等关键参数对分辨率、信噪比(SNR)及成像速度的协同影响...针对蔡司快速超高分辨激光共聚焦显微镜(LSM 900 with Airyscan2)的成像性能优化问题,该研究系统探究了激光功率、探测器增益、像素驻留时间、平均采样次数及Airyscan成像模式选择等关键参数对分辨率、信噪比(SNR)及成像速度的协同影响。通过设计多组对比实验,量化了不同参数组合下的成像性能指标,提出了一套兼顾高分辨率、高信噪比与快速成像的优化策略。结果显示,在Airyscan SR模式下,通过平衡激光功率(0.1%~50%)、探测器增益(550~850 V)及像素驻留时间(0.5~4.0μs)、平均采样次数(0~8次),可实现xy方向分辨率≤120 nm。该研究为超分辨成像参数优化提供了可操作的参数优化框架,对生物医学超分辨成像研究具有重要参考价值。展开更多
Although metallic interconnects have many advantages,the formation of Cr2O3 scale and the evaporation of Cr(Ⅵ)species from alloys will greatly degrade the solid oxide fuel cell(SOFC)performance.In this paper,the elec...Although metallic interconnects have many advantages,the formation of Cr2O3 scale and the evaporation of Cr(Ⅵ)species from alloys will greatly degrade the solid oxide fuel cell(SOFC)performance.In this paper,the electrochemical impedance spectroscopy(EIS)and the cathode polarization method of galvanostatic current interruption were employed to investigate the deposition mechanism of chromium with the electrochemical behavior of LSM cathode in the presence of chromia-forming alloys.The results show that the dissociative adsorption and the diffusion of oxygen on the LSM surface were inhibited by the gaseous chromium species and the migration processes of oxygen ions into YSZ electrolyte were inhibited by the solid chromium species deposited on the YSZ surface.展开更多
文摘Although metallic interconnects have many advantages,the formation of Cr2O3 scale and the evaporation of Cr(Ⅵ)species from alloys will greatly degrade the solid oxide fuel cell(SOFC)performance.In this paper,the electrochemical impedance spectroscopy(EIS)and the cathode polarization method of galvanostatic current interruption were employed to investigate the deposition mechanism of chromium with the electrochemical behavior of LSM cathode in the presence of chromia-forming alloys.The results show that the dissociative adsorption and the diffusion of oxygen on the LSM surface were inhibited by the gaseous chromium species and the migration processes of oxygen ions into YSZ electrolyte were inhibited by the solid chromium species deposited on the YSZ surface.
