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Selective and localized laser annealing effect for high- performance flexible multilayer MoS2 thin-film transistors

Nano research 2014年第8期7卷 1137-1145页

作者： Hyukjun Kwon Woong Choi Daeho Lee Yunsung Lee Junyeon Kwon Byungwook Yoo Costas P. Grigoropoulos Sunkook Kim Department of Mechanical Engineering University of California Berkeley CA 94720-1740 USA School of Advanced Materials Engineering Kookmin University Seoul 136-702 South Korea Department of Mechanical Engineering 6achon University Seongnam-si Gyeonggi 461-701 South Korea Department of Electronics and Radio Engineering Kyung Hee University Gyeonggi 446-70 I South Korea Flexible Display research Center Korea Electronics Technology Institute Seongnam Gyeonggi 463-816 South Korea

We report the use of ultra-short, pulsed-laser annealed Ti/Au contacts to enhance the performance of multilayer MoS2 field effect transistors (FETs) on flexible plastic substrates without thermal damage. An analysis of the temperature distribution, based on finite difference methods, enabled understanding of the compatibility of our picosecond laser annealing for flexible poly(ethylene naphthalate) (PEN) substrates with low thermal budget (< 200 °C). The reduced contact resistance after laser annealing provided a significant improvement in transistor performance including higher peak field-effect mobility (from 24.84 to 44.84 cm2·V−1·s−1), increased output resistance (0.42 MΩ at V gs − V th = 20 V, a three-fold increase), a six-fold increase in the self-gain, and decreased sub-threshold swing. Transmission electron microscopy analysis and current-voltage measurements suggested that the reduced contact resistance resulted from the decrease of Schottky barrier width at the MoS2-metal junction. These results demonstrate that selective contact laser annealing is an attractive technology for fabricating low-resistivity metal-semiconductor junctions, providing important implications for the application of high-performance two-dimensional semiconductor FETs in flexible electronics.

关键词：激光退火薄膜晶体管 MoS2 柔性性能退火效应透射电子显微镜分析场效应晶体管

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富勒烯增强铝基纳米复合材料的力学性能(英文)

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Transactions of Nonferrous Metals Society of China 2014年第S1期24卷 47-52页

作者： Kwangmin CHOI Jiyeon SEO Donghyun BAE Hyunjoo CHOI School of Advanced Materials Engineering Kookmin University School of Advanced Materials Engineering Yonsei University

研究了富勒烯在铝基复合材料中的增强作用。该复合材料采用二次球磨结合热轧制技术制备。最初,富勒烯是由富勒烯分子通过范德华力结合在一起形成大的颗粒(~200μm),首先,通过行星球磨将大的颗粒破碎成更小的颗粒(~1μm);然后,采用高能... 详细信息

研究了富勒烯在铝基复合材料中的增强作用。该复合材料采用二次球磨结合热轧制技术制备。最初,富勒烯是由富勒烯分子通过范德华力结合在一起形成大的颗粒(~200μm),首先,通过行星球磨将大的颗粒破碎成更小的颗粒(~1μm);然后,采用高能球磨将富勒烯粉末分散在铝粉中;最后,将富勒烯/铝复合粉体在480 oC热轧成板材。由于富勒烯的晶粒细化和弥散强化作用,2%(体积分数)的富勒烯/铝复合材料板材表现出高的维氏硬度(HV^222)和高的屈服强度(~740 MPa)。

关键词：铝富勒烯球磨粉末冶金复合材料

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纳米铝晶粒生长的抑制方法(英文)

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Transactions of Nonferrous Metals Society of China 2014年第S1期24卷 112-118页

作者： Gowoon JEONG Jooyoung PARK Singon KANG Hyunjoo CHOI School of Advanced Materials Engineering Kookmin University 77 Jeongneung-ro Seongbuk-gu Seoul 136-702 Korea

对纳米铝、铝合金和铝基化合物的晶粒生长行为进行了比较。首先,采用球磨粉末的烧结方法制备纳米铝。然后,添加能在晶界形成热稳定二次相和阻碍晶界运动的元素,如Mn、Zr和混合稀土元素,形成纳米铝合金。最后,因为多壁碳纳米管有望在晶... 详细信息

对纳米铝、铝合金和铝基化合物的晶粒生长行为进行了比较。首先,采用球磨粉末的烧结方法制备纳米铝。然后,添加能在晶界形成热稳定二次相和阻碍晶界运动的元素,如Mn、Zr和混合稀土元素,形成纳米铝合金。最后,因为多壁碳纳米管有望在晶界处抑制晶粒生长,因此,制备含有多壁碳纳米管的纳米铝复合材料。将3种样品在550 oC,5 d下进行退火处理,比较了退火时间对样品维氏硬度的影响。结果表明,采用多壁碳纳米管阻碍纳米铝晶粒生长的方法最为有效。

关键词：铝(Al) 碳纳米管(CNTs) 复合材料纳米晶晶粒生长

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Fungal diversity notes 929-1035:taxonomic and phylogenetic contributions on genera and species of fungi

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Fungal Diversity 2019年第2期95卷 1-273页

作者： Rungtiwa Phookamsak Kevin D.Hyde Rajesh Jeewon D.Jayarama Bhat E.B.Gareth Jones Sajeewa S.N.Maharachchikumbura Olivier Raspe Samantha C.Karunarathna Dhanushka N.Wanasinghe Sinang Hongsanan Mingkwan Doilom Danushka S.Tennakoon Alexandre R.Machado Andre L.Firmino Aniket Ghosh Anuruddha Karunarathna Armin Mesic Arun Kumar Dutta Benjarong Thongbai Bandarupalli Devadatha Chada Norphanphoun Chanokned Senwanna Deping Wei Dhandevi Pem Frank Kwekucher Ackah Gen-Nuo Wang Hong-Bo Jiang Hugo Madrid Hyang Burm Lee Ishani D.Goonasekara Ishara S.Manawasinghe Ivana Kusan Josep Cano Josepa Gene Junfu Li Kanad Das Krishnendu Acharya K.N.Anil Raj K.P.Deepna Latha K.W.Thilini Chethana Mao-Qiang He Margarita Duenas Margita Jadan Maria P.Martin Milan C.Samarakoon Monika C.Dayarathne Mubashar Raza Myung Soo Park M.Teresa Telleria Napalai Chaiwan Neven Matocec Nimali Ide Silva Olinto L.Pereira Paras Nath Singh Patinjareveettil Manimohan Priyanka Uniyal Qiu-Ju Shang Rajendra P.Bhatt Rekhani H.Perera Renato Lucio Mendes Alvarenga Sandra Nogal-Prata Sanjay K.Singh Santhiti Vadthanarat Seung-Yoon Oh Shi-Ke Huang Shiwali Rana Sirinapa Konta Soumitra Paloi Subashini C.Jayasiri Sun Jeong Jeon Tahir Mehmood Tatiana Baptista Gibertoni Thuong T.T.Nguyen Upendra Singh Vinodhini Thiyagaraja V.Venkateswara Sarma Wei Dong Xian-Dong Yu Yong-Zhong Lu Young Woon Lim Yun Chen Zdenko Tkalcec Zhi-Feng Zhang Zong-Long Luo Dinushani A.Daranagama Kasun M.Thambugala Saowaluck Tibpromma Erio Camporesi Timur S.Bulgakov Asha J.Dissanayake Indunil C.Senanayake Dong Qin Dai Li-Zhou Tang Sehroon Khan Huang Zhang Itthayakorn Promputtha Lei Cai Putarak Chomnunti Rui-Lin Zhao Saisamorn Lumyong Saranyaphat Boonmee Ting-Chi Wen Peter E.Mortimer Jianchu Xu Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of ScienceKunming 650201YunnanPeople’s Republic of China Institute of Animal Science State Key Laboratory of AnimalNutritionChinese Academy of Agricultural SciencesBeijing 100193People’s Republic of China Center of Excellence in Fungal research Mae Fah Luang UniversityChiang Rai 57100Thailand World Agroforestry Centre East and Central AsiaKunming 650201YunnanPeople’s Republic of China Mushroom research foundation 128 M.3 Ban Pa Deng T.Pa PaeA.Mae TaengChiang Rai 50150Thailand Department of Biology Faculty of ScienceChiang Mai UniversityChiang Mai 50200Thailand Department of Health Sciences Faculty of ScienceUniversity of MauritiusReduitMauritius No.128/1-J Co-Op Azad Housing SocietyCurcaGoa VelhaIndia Department of Crop Sciences College of Agricultural and Marine SciencesSultan Qaboos UniversityPO Box 8123 Al KhoudOman Botanic Garden Meise Nieuwelaan 381860 MeiseBelgium Federation Wallonie-Bruxelles Service general de l’Enseignement universitaire et de la Recherche scientifiqueRue A.Lavallee 11080 BrusselsBelgium Shenzhen Key Laboratory of Microbial Genetic Engineering College of Life Science and OceanographyShenzhen University3688Nanhai AvenueNanshanShenzhen 518060People’s Republic of China Department of Plant Medicine National Chiayi University300 Syuefu RoadChiayi City 60004Taiwan Departamento de Micologia Universidade Federal de PernambucoRecifePernambucoBrazil Instituto de Ciencias Agrarias Universidade Federal de UberlandiaMonte CarmeloMinas GeraisBrazil Department of Botany&Microbiology H.N.B.Garhwal UniversitySrinagarGarhwal 246174UttarakhandIndia Department of Entomology and Plant Pathology Faculty of AgricultureChiang Mai UniversityChiang Mai 50200Thailand Ruder Boskovic Institute Bijenicka cesta 5410000 ZagrebCroatia Molecular and Applied Mycology and Plant Pathology Laboratory Department of BotanyUniversity of CalcuttaKolkataWest Bengal

This article is the ninth in the series of Fungal Diversity Notes,where 107 taxa distributed in three phyla,nine classes,31 orders and 57 families are described and *** described in the present study include 12 new genera,74 new species,three new combinations,two reference specimens,a re-circumscription of the epitype,and 15 records of sexualasexual morph connections,new hosts and new geographical *** new genera comprise Brunneofusispora,Brunneomurispora,Liua,Lonicericola,Neoeutypella,Paratrimmatostroma,Parazalerion,Proliferophorum,Pseudoastrosphaeriellopsis,Septomelanconiella,Velebitea and ***-four new species are Agaricus memnonius,***,Aleurodiscus patagonicus,Amanita flavoalba,***,Amphisphaeria mangrovei,Baorangia major,Bartalinia kunmingensis,Brunneofusispora sinensis,Brunneomurispora lonicerae,Capronia camelliaeyunnanensis,Clavulina thindii,Coniochaeta simbalensis,Conlarium thailandense,Coprinus trigonosporus,Liua muriformis,Cyphellophora filicis,Cytospora ulmicola,Dacrymyces invisibilis,Dictyocheirospora metroxylonis,Distoseptispora thysanolaenae,Emericellopsis koreana,Galiicola baoshanensis,Hygrocybe lucida,Hypoxylon teeravasati,Hyweljonesia indica,Keissleriella caraganae,Lactarius olivaceopallidus,Lactifluus midnapurensis,Lembosia brigadeirensis,Leptosphaeria urticae,Lonicericola hyaloseptispora,Lophiotrema mucilaginosis,Marasmiellus bicoloripes,Marasmius indojasminodorus,Micropeltis phetchaburiensis,Mucor orantomantidis,Murilentithecium lonicerae,Neobambusicola brunnea,Neoeutypella baoshanensis,Neoroussoella heveae,Neosetophoma lonicerae,Ophiobolus malleolus,Parabambusicola thysanolaenae,Paratrimmatostroma kunmingensis,Parazalerion indica,Penicillium dokdoense,Peroneutypa mangrovei,Phaeosphaeria cycadis,Phanerochaete australosanguinea,Plectosphaerella kunmingensis,Plenodomus artemisiae,***,Proliferophorum thailandicum,Pseudoastrosphaeriellopsis kaveriana,Pseudohelicomyces menglunicu

关键词： 86 new taxa Agaricomycetes Ascomycota Basidiomycota Dacrymycetes Dothideomycetes Eurotiomycetes Lecanoromycetes Leotiomycetes Mucoromycetes Mucoromycota Pezizomycetes Sordariomycetes Taxonomy

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