▲ Vol 54 Issue 04 | 07 February , 2023

304L不锈钢的激光粉末床熔融原位合金化

张浩, 侯雅青, 王炫东, 苏航

采用Fe、Cr和Ni单质元素混合粉末作为LPBF原材料，以原位合金化的方式制备304L不锈钢，研究了工艺参数对试样密度、微观组织、成分均匀性、相结构和显微硬度的影响，并将其与预合金粉末LPBF试样进行了对比。结果表明：原位合金化试样的致密度最高可达99.05%；随着激光能量密度增加，试样的成分均匀性逐渐提高，物相结构从面心立方+体心立方（FCC+BCC）转变为FCC；当激光能量密度为242 J/mm3（P=290 W，v=500 mm/s）时，能谱分析结果显示原位合金化试样成分均匀，显微硬度为224 HV，微观形貌与预合金粉末LPBF试样一致；当激光能量密度较低时，原位合金化试样内部的多相结构以及异质形核产生的细晶结构能有效提高其硬度，硬度最高可达302 HV，较预合金LPBF试样提高了26.4%。

https://www.opticsjournal.net/Articles/OJc322195e1414df92/Abstract

▲ Vol 33 Issue 08 | 16 February , 2023

Lithium Difluorophosphate as a Widely Applicable Additive to Boost Lithium-Ion Batteries: a Perspective

Aiping Wang, Li Wang, Hongmei Liang, Youzhi Song, Yufang He, Yanzhou Wu, Dongsheng Ren, Bo Zhang, Xiangming He

Solid Electrolyte Interphase Enabler
In article number 2211958, Xiangming He, Li Wang and co-workers review the mechanism of a typical salt additive in electrolyte, lithium difluorophosphate, for Li-ion batteries at extreme working conditions. With this additive as an exemplar, this perspective presents the potential of salt additives as robust interphase enablers to break their intrinsic limits, and release their full functionalities.

https://onlinelibrary.wiley.com/doi/10.1002/adfm.202370044

▲ Vol 19 Issue 08 | 22 February , 2023

Multimodal-Synergistic-Modulation Neuromorphic Imaging Systems for Simulating Dry Eye Imaging

Xu Han, Xiaoli Zhao, Tao Zeng, Yahan Yang, Hongyan Yu, Cong Zhang, Bin Wang, Xiaoqian Liu, Tao Zhang, Jing Sun, Xinyuan Li, Tuo Zhao, Mingxin Zhang, Yanping Ni, Yanhong Tong, Qingxin Tang, Yichun Liu

Neuromorphic Imaging Systems
In article number 2206181, Xiaoli Zhao, Qingxin Tang, and co-workers present a multimodal-synergistic-modulation neuromorphic imaging systems based on ultraflexible synaptic transistors. The device is capable to simulate the spherical structure and the environmental adaptive behavior of the human eye. Based on the function that synaptic weight can be synergistically regulated through optical, electrical and humidity stimulation, the dry eye imaging behavior is successfully realized at the device level.

https://onlinelibrary.wiley.com/doi/10.1002/smll.202370046

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静远嘲风（MY Scimage） 成立于2007年，嘲风取自中国传统文化中龙生九子，子子不同的传说，嘲风为守护屋脊之瑞兽，喜登高望远；静远取自成语“宁静致远”，登高莫忘初心，远观而不可务远。