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水做为氯碱企业重要的资源,在生产过程中起到举足轻重的作用,如何有效地利用好有限的水资源,使其发挥最大能效,是氯碱企业亟需研究解决的课题。 相似文献
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浅谈氯碱企业如何搞好防火、防爆及消防工作 总被引:1,自引:0,他引:1
氯碱是重要的基本化工原料,在国民经济中起着非常重要的作用,被广泛用于轻工、纺织、造纸、建筑等行业。氯碱生产的特点决定其具有潜在的危险性,加之很多企业在管理、工艺设备等方面存在不足,使企业在快速发展的同时,也不同程度发生了一些事故,其中火灾和爆炸事故是危害程度最大,伤亡人数最多,损失最严重的事故。所以,预防和消除火灾、爆炸事故是氯碱企业生产中的重要环节,必须采取有针对性的防范措施。 相似文献
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Two-dimensional(2D) atomic crystals,such as graphene,black phosphorus(BP) and transition metal dichalcogenides(TMDCs) are attractive for use in optoelectronic devices,due to their unique crystal structures and optical absorption properties.In this study,we fabricated BP/ReS2 van der Waals(vdWs) heterojunction devices.The devices realized broadband photoresponse from visible to near infrared(NIR)(400–1800 nm) with stable and repeatable photoswitch characteristics,and the photoresponsivity reached 1.8 mA/W at 1550 nm.In addition,the polarization sensitive detection in the visible to NIR spectrum(532–1750 nm) was demonstrated,and the photodetector showed a highly polarization sensitive photocurrent with an anisotropy ratio as high as 6.44 at 1064 nm.Our study shows that van der Waals heterojunction is an effective way to realize the broadband polarization sensitive photodetection,which is of great significance to the realization and application of multi-functional devices based on 2D vdWs heterostructures. 相似文献
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Yi Cao Yu Sheng Kevin William Edmonds Yang Ji Houzhi Zheng Kaiyou Wang 《Advanced materials (Deerfield Beach, Fla.)》2020,32(16):1907929
Current-induced magnetization switching by spin–orbit torque (SOT) holds considerable promise for next generation ultralow-power memory and logic applications. In most cases, generation of spin–orbit torques has relied on an external injection of out-of-plane spin currents into the magnetic layer, while an external magnetic field along the electric current direction is generally required for realizing deterministic switching by SOT. Here, deterministic current-induced SOT full magnetization switching by lateral spin–orbit torque in zero external magnetic field is reported. The Pt/Co/Pt magnetic structure is locally annealed by a laser track along the in-plane current direction, resulting in a lateral Pt gradient within the ferromagnetic layer, as confirmed by microstructure and chemical composition analysis. In zero magnetic field, the direction of the deterministic current-induced magnetization switching depends on the location of the laser track, but shows no dependence on the net polarization of external out-of-plane spin currents. From the behavior under external magnetic fields, two independent mechanisms giving rise to SOT are identified, i.e., the lateral Pt–Co asymmetry as well as out-of-plane injected spin currents, where the polarization and the magnitude of the SOT in the former case depends on the relative location and the laser power of the annealing track. 相似文献
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Kai Zhao Juehan Yang Mianzeng Zhong Qiang Gao Yang Wang Xiaoting Wang Wanfu Shen Chunguang Hu Kaiyou Wang Guozhen Shen Ming Li Jianlu Wang Weida Hu Zhongming Wei 《Advanced functional materials》2021,31(6):2006601
Polarized photodetectors with wide spectral detection and ultra-fast photoresponses based on anisotropic semiconductors have potential applications in military and civilian fields and have been widely studied in recent years. The dual advantages of low-symmetry crystal structure and special electronic band-structure make Sb2S3 the perfect choice for polarized photodetection. In this work, the optical, vibrational, and optoelectronic anisotropy of the high-quality orthorhombic Sb2S3 nanowires are systematically investigated by experimental and theoretical studies. The metal-semiconductor-metal photodetectors based on a single Sb2S3 nanowire exhibit good polarization sensitivity in a broadband range from ultraviolet to near-infrared (360 to 1550 nm) and the obtained maximum dichroic ratio is 2.54 at 638 nm. The polarization-sensitive photocurrent mapping results show that the photocurrent is mainly derived from the Schottky junction at the interface between Au and Sb2S3. The effective separation of the photo-generated carriers near the Schottky junction gives a photodetector response time of 470 µs. The direct polarimetric imaging demonstrates that the gray value of the image obtained by the imaging system is sensitive to the object's polarized direction. This natural sensitivity of the Sb2S3-based photodetector to polarized objects makes it possible to image polarized objects directly as an image sensor. 相似文献
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采用接替离子层吸附反应(SILAR)沉积法成功地在KCu7S4微米线上沉积CuO纳米片得到CuO/KCu7S4复合纳米材料,并应用于超级电容器的电极。通过对该纳米复合材料表征表明,随沉积次数增加,CuO的含量增加,该CuO为片状结构,均匀地分布于KCu7S4微米线上。在1A/g的电流密度下,沉积次数分别为0、20、40和60的样品比电容分别为10.04、25.52、30.84和40.92F/g。CuO/KCu7S4-60在0.7A/g的电流密度下比电容为47.6F/g,并且在5A/g的电流密度下进行1000次的循环充/放电测试后比电容增加到初始电容的117.29%。 相似文献