紫蓝光有机发光材料在全彩显示和照明领域具有广阔的应用前景。但是该类材料需要宽能隙，因此开发高效的紫蓝色材料是一项巨大的挑战。本文利用10H?吩噻嗪5，5?二氧化物（2OPTZ）作为弱受体、N?苯基?2?萘胺（PNA）作为供体，设计合成了两个具有D?π?A型结构的紫蓝色材料，命名为2OPTZ?PNA和2OPTZ?BP?PNA。通过延长给受体之间的π共轭长度，使局域态和电荷转移态被优化，并且薄膜中的绝对量子产率从14%提高到33%。此外，利用2OPTZ?BP?PNA制备的非掺杂器件呈现紫蓝光（436 nm）发射，半峰全宽为54 nm，色坐标为（0.155，0.046），外量子效率为4.1%。鉴于此，本文提供了一种制备高质量紫蓝发光材料的有效策略。

In this Letter, we present B-scan-sectioned dynamic micro-optical coherence tomography (BD-MOCT) for high-quality sub-cellular dynamic contrast imaging. Dynamic micro-optical coherence tomography (D-MOCT) is a functional optical coherence tomography (OCT) technique performed on high-resolution (micron level) OCT systems; hundreds of consecutive B-scans need to be acquired for dynamic signal extraction, which requires relatively long data acquisition time. Bulk motions occurring during data acquisition (even at the micron level) may degrade the quality of the obtained dynamic contrast images. In BD-MOCT, each full B-scan is divided into several sub-B-scans, and each sub-B-scan repeats multiple times before the sample beam moves to the next sub-B-scan. After all of the sub-B-scans for a full B-scan are completely acquired, we stitch all of the sub-B-scans into the same number of full B-scans. In this way, the time interval between two consecutive stitched B-scans could be reduced multiple times for bulk-motion suppression. The performed scanning protocol modulates the scanning sequences of fast scanning and repeat scanning for improving the dynamic contrast image quality, while the total data acquisition time remains almost the same.

强流重离子加速器装置（HIAF）将采用电子冷却技术，降低重离子束流的发射度和动量分散，提高核物理及原子物理实验的精度与亮度。电子冷却装置的冷却段磁场均匀度是影响冷却效率的主要参数，HIAF电子冷却装置采用多个独立高精度线圈串联产生纵向磁场的设计，获得极高的冷却段磁场均匀度。本文介绍了一种测量高精度线圈磁轴偏角的装置，采用定位装置测量线圈的几何对称轴，通过旋转霍尔探头测量线圈中心平面上的径向与轴向磁场分布，再根据磁场测量数据计算出线圈磁轴与几何对称轴之间的偏角。实际测量表明该装置的磁轴偏角测量精度达到±0.10 mrad。测量得到的HIAF电子冷却装置冷却段线圈样品的磁轴偏角为（1.28±0.10）mrad，达到设计要求。