Multi-domain High-Resolution Platform for Integrated Spectroscopy and Microscopy Characterizations

In recent decades,materials science has experienced rapid development and posed increasingly high requirements for the characterizations of structures,properties,and performances.Herein,we report on our recent establishment of a multi-domain(energy,space,time)highresolution platform for integrated spectroscopy and microscopy characterizations,offering an unprecedented way to analyze materials in terms of spectral(energy)and spatial mapping as well as temporal evolution.We present several proof-of-principle results collected on this platform,including in-situ Raman imaging(high-resolution Raman,polarization Raman,low-wavenumber Raman),time-resolved photoluminescence imaging,and photoelectrical performance imaging.It can be envisioned that our newly established platform would be very powerful and effective in the multi-domain high-resolution characterizations of various materials of photoelectrochemical importance in the near future.

基于功能性近红外光谱血氧测量系统研究进展

【目的】对功能性近红外光谱(functionalnear-infraredspectroscopy,f NIRS)技术检测组织血氧饱和度的基本原理及主要检测血氧技术研究进展进行综述,为未来该技术在医学领域的发展提供参考。【方法】通过查阅文献资料,从检测原理、检测技术分类及优缺点方面对f NIRS技术在血氧检测方面的应用进行归纳总结。【结果】在阐明f NIRS技术检测血氧的基本原理基础上,探讨了连续波光谱、频域光谱、时域分辨光谱等3种f NIRS检测血氧技术的原理和特点,并对它们的优缺点进行了比较。【结论】f NIRS技术具有便携性好、无创伤性、时间分辨率和空间分辨率较高、对被试动作的容忍度高等优点,今后可结合蒙特卡罗方法分析光子在组织中的传播与分布规律,从而进一步加深人们对生物医学光子学领域的理解并推进f NIRS技术在医学中的应用。