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Study of Thermal Stability of Ni Silicide using Ni-V Alloy
Zhun Zhong,Soon-Young Oh,Won-Jae Lee,Ying-Ying Zhang,Soon-Yen Jung,Shi-Guang Li,Ga-Won Lee,왕진석,이희덕,Yeong-Cheol Kim 한국전기전자재료학회 2008 Transactions on Electrical and Electronic Material Vol.9 No.2
In this paper, thermal stability of Nickel silicide formed on p-type silicon wafer using Ni-V alloy film was studied. As compared with pure Ni, Ni-V shows better thermal stability. The addition of Vanadium suppresses the phase transition of NiSi to NiSi₂ effectively. Ni-V single structure shows the best thermal stability compared with the other Ni-silicide using TiN and Co/TiN capping layers. To enhance the thermal stability up to 650 ˚C and find out the optimal thickness of Ni silicide, different thickness of Ni-V was also investigated in this work.
Zhun Li,Yu Zhao,Ying Wang,Shaomin Zhu 한국고분자학회 2020 폴리머 Vol.44 No.2
A novel pyridine-containing aromatic diamine monomer, 2,2′-bis[4-(6-amino-3-pyridinoxy) phenyl] propane, was synthesized through nucleophilic substitution reaction. A series of polyimides (PIs) were obtained by the polycondensation reaction of synthesized monomer with four commercial dianhydrides. The structure and properties of the resulting PIs were characterized by Fourier transform infrared spectroscopy, differential scanning calorimetric analysis, dynamic mechanical thermal analysis, thermogravimetric analysis, and X-ray diffraction. The PIs exhibited good thermal stability with glass transition temperature of 231 to 303℃ by DSC and 205 to 274℃ by DMA. The temperature at 5% weight loss was 478 to 501℃ in nitrogen atmosphere, and the residual mass range at 800℃ was 42-55%. The excellent mechanical properties included tensile strength of 98-102 MPa, elongation at break of 6-18%, and tensile modulus of 2.8- 3.0 GPa. The cut-off wavelength ranged from 391-440 nm, indicating that the resulting PIs had desirable optical performance.
Li, Zhun,Oh, Seok Jin,Park, Jong-Woo,Lim, Weol-Ae,Shin, Hyeon Ho John Wiley Sons Ltd 2017 Phycologia Vol.56 No.4
<P>A new phototrophic dinoflagellate, Grammatodinium tongyeonginum gen. & sp. nov., was established by incubating resting cysts collected from surface sediment samples from Tongyeong coastal area, Korea. The resting cysts were ovoid with a large reddish pigment body and surrounded with a thick mucous layer that incorporated attached detritus particles. The vegetative cells were 24.6-40.9 mu m long and 16.4-27.3 mu m wide. The cell surface was covered with prominent longitudinal equidistant furrows. The cingulum was narrow and descended two to eight times its width. The nucleus was located at the central part of the epicone. The peripheral chloroplasts were usually granular and yellow-green in culture and were distributed along the rim of the cingulum. The horseshoe-shaped apical groove ran from the end of the sulcal extension anticlockwise around the apex. The distal end of the apical groove was located next to the extension of the sulcus and more to the ventral side than the proximal end. Molecular phylogenetic analysis using small subunit ribosomal DNA (SSU rDNA) gene sequences revealed that G. tongyeonginum was allied with the Cucumeridinium species. Large subunit ribosomal DNA (LSU rDNA) sequences revealed that G. tongyeonginum formed a clade distantly related to the other genera of Gymnodiniales. The combination of morphological characteristics with molecular phylogenies distinguished the present species from other genera within Gymnodiniales.</P>
Gu, Zhun World Association for Triple Helix and Future Stra 2018 Journal of Contemporary Eastern Asia Vol.17 No.1
Produced by Chinese local television stations, Maritime Silk Road is a documentary which adopts ancient Maritime Silk Road as a historical nostalgia to interpret "the Belt and Road Initiative", a contemporary Chinese economic, political, and cultural strategy put forward by Chinese government mainly aiming at the countries of Southeast Asia. The main body of this article has three parts and the first part analyses how the documentary adopts computer-generated imagery (CGI) to create a historical nostalgia about ancient Maritime Silk Road in the period of Imperial China. At the same time, this part also presents a sense of diasporic nostalgia of the overseas Chinese. This historical and diasporic nostalgia is related to Chinese President Xi Jinping's political discourse: "Chinese dream" that propagandises to build a strong China put forward by Xi in 2013. The second part analyses how this historical and diasporic nostalgia legitimates Xi's "Chinese dream" and how it responds to recent territorial dispute when China continuously claims its territorial sovereignty in the South China Sea. In this light, the documentary repeatedly mentions two political rhetoric: "coexistence" (gongcun) and "mutual benefit"(huli gongying) as a practical strategy to deal with the dispute between China and some countries of Association of Southeast Asian Nations (ASEAN). In the third section, the concept of "community of common destiny" (mingyun gongtongti) is adopted by the documentary to depict a convenient and effective organization of China and ASEAN, which is framed as an ultimate goal that Chinese government is depicted as the potential leader of this nostalgic community. At the same time, by providing different and even opposite viewpoints, this article discusses three controversial political rhetoric to present how historical and diasporic nostalgia is politicalized and served for Chinese diplomacy and national interest. Overall, this article argues that the documentary creates a glorious ancient Maritime Silk Road, as a sense of nostalgia, to expand China's economic and political influence, to respond to the controversial issues, and to reassert China's leadership as the centre of Asia.