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141.
Recent experiments on ferroelectric gating have introduced a novel functionality, i.e., nonvolatility, in graphene field-effect transistors. A comprehensive understanding in the nonlinear, hysteretic ferroelectric gating and an effective way to control it are still absent. In this Letter, we quantitatively characterize the hysteretic ferroelectric gating using the reference of an independent background doping (n(BG)) provided by normal dielectric gating. More importantly, we prove that n(BG) can be used to control the ferroelectric gating by unidirectionally shifting the hysteretic ferroelectric doping in graphene. Utilizing this electrostatic effect, we demonstrate symmetrical bit writing in graphene-ferroelectric field-effect transistors with resistance change over 500% and reproducible no-volatile switching over 10? cycles. 相似文献
142.
Cheng-Liang Ni Xiao-Hui Song Hong Yan Xiu-Qing Song Ru-Gang Zhong 《Ultrasonics sonochemistry》2010,17(2):367-369
Diethyl 2,6-dimethyl-4-aryl-4H-pyran-3,5-dicarboxylates (1) have been synthesized by the reaction of aryl aldehyde and 1,3-diketone catalyzed by ZnCl2 under ultrasound irradiation. The effects of changes in the ultrasonic power, temperature, and reaction time are discussed. With the optimized reaction conditions, various aryl aldehydes were used to synthesize 4H-pyrans (1) under the influence of ultrasound irradiation. Compared with the conventional thermal methods, the remarkable advantages of this method are the simple experimental procedure, shorter reaction time and high yield of product. 相似文献
143.
Xie Ju Yang Yanwu Xi Ziqing Yang Zhenshan Zhang Xuecheng Ni Lubin 《Journal of inclusion phenomena and macrocyclic chemistry》2022,102(9-10):751-761
Journal of Inclusion Phenomena and Macrocyclic Chemistry - The combination of the electron donor and acceptor into a donor–acceptor system can transform the intermolecular charge transfer... 相似文献
144.
Transition Metal Chemistry - A Cu(II) coordination polymer, [Cu2(pztrz)2(μ-CH3COO)(CH3COO)]·3H2O (1), derived from mono-substituted 1,2,4-triazole derivative 3-(pyrazinyl)-1,2,4-triazole... 相似文献
145.
Alam Nur Tong Li He Zhibin Tang Ruihua Ahsan Laboni Ni Yonghao 《Cellulose (London, England)》2021,28(13):8641-8651
Cellulose - Lateral flow assay (LFA) is an important point-of-care (POC) test platform due to the associated portability, on-site testing, and low cost for diagnosis of pathogen infections and... 相似文献
146.
Hua-Chao Tao Xue-Lin Yang Lu-Lu Zhang Shi-Bing Ni 《Journal of Solid State Electrochemistry》2014,18(7):1989-1994
Polyaniline encapsulated silicon (Si/PANI) nanocomposite as anode materials for high-capacity lithium ion batteries has been prepared by an in situ chemical polymerization of aniline monomer in the suspension of Si nanoparticles. The obtained Si/PANI nanocomposite demonstrates a reversible specific capacity of 840 mAh g?1 after 100 cycles at a rate of 100 mA g?1 and excellent cycling stability. The enhanced electrochemical performance can be due to that the polyaniline (PANI) matrix offers a continuous electrically conductive network as well as enhances the compatibility of electrode materials and electrolyte as a result of suppressing volume stress of Si during cycles and preventing the agglomeration of Si nanoparticles. 相似文献
147.
Pan Yong Qi Ronghua He Pei Shen Ruiqing Jiang Jiajia Ni Lei Jiang Juncheng Wang Qingsheng 《Journal of Thermal Analysis and Calorimetry》2020,140(5):2575-2583
Journal of Thermal Analysis and Calorimetry - Chemical reactivity hazards of organic peroxides are major concerns of the chemical industry due to many serious incidents every year. Thermal hazard... 相似文献
148.
Meccanica - In this work, we have developed a systematic computational methodology to directly simulate the ductile fracture of ship hull structure during ship stranding based on the meshfree... 相似文献
149.
150.
采用机械力固相法以FeCl3和Fe(NO3)3分别作为铁源.在铁源与碱1∶5摩尔比的条件下,先球磨3h,再经过60℃水浴陈化得到纳米针铁矿(α-FeOOH).用X-射线衍射仪(XRD)、场发射扫描电子显微镜(FE-SEM)、比表面和孔隙度分析仪(BET)、紫外-可见分光光度计以及电化学工作站对其物相、微观形貌、比表面、光催化和光电化学性能进行表征.结果 表明:不同铁源的阴离子会诱导合成形貌和性能差异的纳米针铁矿,以FeCl3为原料合成的纳米α-FeOOH粒径较小、比表面积及孔容较大、对有机染料罗丹明B的降解率较以Fe(NO3)3为原料的α-FeOOH提高了48.7;. 相似文献