Kev tsis sib haum xeeb hauv amorphous carbon monolayer modulates hluav taws xob conductivity

Ua tsaug rau koj tuaj xyuas Nature.com.Koj siv lub browser version nrog kev txhawb nqa CSS tsawg.Rau qhov kev paub zoo tshaj plaws, peb xav kom koj siv qhov browser tshiab (lossis lov tes taw Compatibility Hom hauv Internet Explorer).Tsis tas li ntawd, txhawm rau xyuas kom muaj kev txhawb nqa tsis tu ncua, peb qhia lub vev xaib tsis muaj qauv thiab JavaScript.
Kev sib raug zoo ntawm atomic configurations, tshwj xeeb tshaj yog cov degree ntawm kev tsis sib haum xeeb (DOD) ntawm amorphous solids nrog cov khoom, yog ib qho tseem ceeb ntawm kev txaus siab nyob rau hauv cov ntaub ntawv science thiab condensed teeb meem physics vim qhov nyuaj ntawm kev txiav txim lub meej txoj hauj lwm ntawm atoms nyob rau hauv peb-dimensional. cov qauv 1, 2, 3, 4., Ib qho kev paub tsis meej qub, 5. Txog rau qhov kawg no, 2D tshuab muab kev nkag siab txog qhov tsis paub los ntawm kev tso cai rau txhua lub atoms ncaj qha tso tawm 6,7.Direct imaging ntawm amorphous monolayer ntawm carbon (AMC) zus los ntawm laser deposition daws teeb meem ntawm atomic configuration, txhawb lub niaj hnub saib ntawm crystallites nyob rau hauv glassy solids raws li random network txoj kev xav8.Txawm li cas los xij, kev sib raug zoo ntawm atomic scale qauv thiab macroscopic zog tseem tsis tau meej.Ntawm no peb qhia yooj yim tuning ntawm DOD thiab conductivity nyob rau hauv AMC nyias films los ntawm kev hloov qhov loj hlob kub.Tshwj xeeb, qhov kub ntawm pyrolysis yog qhov tseem ceeb rau kev loj hlob ntawm AMCs nrog qhov sib txawv ntawm qhov nruab nrab kev txiav txim dhia (MRO), thaum nce qhov kub ntawm 25 ° C ua rau AMCs poob MRO thiab ua hluav taws xob insulating, ua rau cov ntawv tsis kam. khoom hauv 109 lub sijhawm.Ntxiv nrog rau kev pom cov nanocrystallites uas muaj kev cuam tshuam loj heev nyob rau hauv kev sib txuas tsis tu ncua, atomic daws teeb meem electron microscopy qhia qhov muaj / tsis muaj MRO thiab qhov kub thiab txias-nyob ntawm nanocrystallites ntom ntom, ob qhov kev txiav txim tsis tau thov rau cov lus piav qhia ntawm DOD.Cov lej suav tau tsim daim ntawv qhia kev coj ua raws li kev ua haujlwm ntawm ob qhov tsis muaj, ncaj qha ntsig txog microstructure rau cov khoom hluav taws xob.Peb txoj hauj lwm sawv cev rau ib kauj ruam tseem ceeb rau kev nkag siab txog kev sib raug zoo ntawm cov qauv thiab cov khoom ntawm cov khoom siv amorphous nyob rau theem tseem ceeb thiab ua rau txoj hauv kev rau cov khoom siv hluav taws xob siv ob-seem amorphous cov ntaub ntawv.
Tag nrho cov ntaub ntawv tsim nyog thiab / lossis txheeb xyuas hauv qhov kev tshawb fawb no muaj los ntawm cov kws sau ntawv raws li qhov kev thov tsim nyog.
Cov cai muaj nyob rau ntawm GitHub (https://github.com/vipandyc/AMC_Monte_Carlo; https://github.com/ningustc/AMCProcessing).
Sheng, HW, Luo, VK, Alamgir, FM, Bai, JM thiab Ma, E. Atomic packing thiab txiav luv luv thiab nruab nrab hauv cov iav hlau.Xwm Txheej 439, 419–425 (2006).
Greer, AL, hauv Physical Metallurgy, 5th ed.(eds. Laughlin, DE and Hono, K.) 305–385 (Elsevier, 2014).
Ju, WJ et al.Kev siv cov roj carbon monolayer tsis tu ncua.kev kawm.Ntxiv 3, e1601821 (2017).
Tau, KT et al.Synthesis thiab cov khoom ntawm tus kheej txhawb nqa monolayer ntawm amorphous carbon.Xwm Txheej 577, 199–203 (2020).
Schorr, S. & Weidenthaler, K. (eds.) Crystallography hauv Cov Khoom Siv Kev Tshawb Fawb: Los Ntawm Cov Txheej Txheem-Txoj Kev Sib Raug Zoo rau Engineering (De Gruyter, 2021).
Yang, Y. Y. et al.Txiav txim siab peb-dimensional atomic qauv ntawm amorphous solids.Xwm Txheej 592, 60–64 (2021).
Kotakoski J., Krasheninnikov AV, Kaiser W. thiab Meyer JK Los ntawm qhov tsis xws luag hauv graphene mus rau ob-dimensional amorphous carbon.physics.Reverend Wright.106, 105505 (2011).
Eder FR, Kotakoski J., Kaiser W., thiab Meyer JK Txoj hauv kev los ntawm kev txiav txim mus rau qhov tsis sib haum xeeb - atom los ntawm atom los ntawm graphene mus rau 2D carbon iav.kev kawm.Tsev 4, 4060 (2014).
Huang, P.Yu.ua al.Visualization ntawm atomic rearrangement nyob rau hauv 2D silica iav: saib silica gel seev cev.Science 342, 224–227 (2013).
Li H. et al.Synthesis ntawm high-zoo thiab uniform loj cheeb tsam graphene films ntawm tooj liab ntawv ci.Science 324, 1312–1314 (2009).
Reina, A. et al.Tsim cov txheej txheem qis, thaj tsam loj ntawm graphene zaj duab xis ntawm cov txheej txheem tsis ncaj ncees los ntawm cov tshuaj vapor deposition.Nanolet.9, 30–35 (2009).
Nandamuri G., Rumimov S. thiab Solanki R. Tshuaj vapor deposition ntawm graphene nyias films.Nanotechnology 21, 145604 (2010).
Cai, J. et al.Fabrication ntawm graphene nanoribbons los ntawm ascending atomic precision.Xwm Txheej 466, 470–473 (2010).
Kolmer M. et al.Rational synthesis ntawm graphene nanoribbons ntawm atomic precision ncaj qha rau saum npoo ntawm hlau oxides.Science 369, 571–575 (2020).
Yaziev OV Cov Lus Qhia rau kev suav cov khoom hluav taws xob ntawm graphene nanoribbons.khaws cia chemistry.cia tank.46, 2319–2328 (2013).
Jang, J. et al.Tsawg kub loj hlob ntawm cov khoom graphene films los ntawm benzene los ntawm atmospheric siab tshuaj vapor deposition.kev kawm.Tsev 5, 17955 (2015).
Choi, JH et al.Kev txo qis hauv kev loj hlob kub ntawm graphene ntawm tooj liab vim kev txhim kho London dispersion quab yuam.kev kawm.Tsev 3, 1925 (2013).
Wu, T. et al.Nruam Graphene Films Synthesized at Low Temperature by Introducing Halogens as Seeds of Seeds.Nanoscale 5, 5456–5461 (2013).
Zhang, P.F. et al.Pib B2N2-perylene nrog sib txawv BN orientations.Angie.Tshuaj.sab hauv Ed.60, 23313–23319 (2021).
Malar, LM, Pimenta, MA, Dresselhaus, G. thiab Dresselhaus, MS Raman spectroscopy hauv graphene.physics.Tus Neeg Sawv Cev 473, 51–87 (2009).
Egami, T. & Billinge, SJ Hauv qab Bragg Peaks: Kev Ntsuam Xyuas Cov Khoom Siv Kom Zoo (Elsevier, 2003).
Xu, Z. et al.Nyob rau hauv situ TEM qhia tau hais tias hluav taws xob conductivity, tshuaj lom neeg zog, thiab daim ntawv cog lus hloov los ntawm graphene oxide rau graphene.ACS Nano 5, 4401–4406 (2011).
Wang, WH, Dong, C. & Shek, CH Volumetric metallic tsom iav.alma mav.kev kawm.qhov project.R Rep. 44, 45–89 (2004).
Mott NF thiab Davis EA Cov Txheej Txheem Hluav Taws Xob hauv Amorphous Materials (Oxford University Press, 2012).
Kaiser AB, Gomez-Navarro C., Sundaram RS, Burghard M. and Kern K. Conduction mechanisms in chemically derivatized graphene monolayers.Nanolet.9, 1787–1792 (2009).
Ambegaokar V., Galperin BI, Langer JS Hopping conduction in disordered systems.physics.Ed.B 4, 2612–2620 (1971).
Kapko V., Drabold DA, Thorp MF Hluav taws xob cov qauv ntawm cov qauv muaj tseeb ntawm amorphous graphene.physics.State Solidi B 247, 1197–1200 (2010).
Thapa, R., Ugwumadu, C., Nepal, K., Trembly, J. & Drabold, DA Ab initio modeling of amorphous graphite.physics.Reverend Wright.128, 236402 (2022).
Mott, Kev coj ua hauv Amorphous Materials NF.3. Localized xeev nyob rau hauv lub pseudogap thiab ze rau qhov kawg ntawm cov conduction thiab valence bands.tus kws tshawb fawb.mag.19, 835–852 (1969).
Tuan DV et al.Insulating zog ntawm amorphous graphene films.physics.Revision B 86, 121408(R) (2012).
Lee, Y., Inam, F., Kumar, A., Thorp, MF thiab Drabold, DA Pentagonal folds nyob rau hauv ib daim ntawv ntawm amorphous graphene.physics.State Solidi B 248, 2082–2086 (2011).
Liu, L. et al.Heteroepitaxial kev loj hlob ntawm ob sab hexagonal boron nitride patterned nrog graphene tav.Science 343, 163–167 (2014).
Imada I., Fujimori A. thiab Tokura Y. Hlau-insulator hloov.Pov Thawj Mod.physics.70, 1039–1263 (1998).
Siegrist T. et al.Localization ntawm teeb meem nyob rau hauv cov ntaub ntawv crystalline nrog ib theem hloov.National alma mater.10, 202–208 (2011).
Krivanek, OL et al.Atom-by-atom structural thiab tshuaj tsom xam siv lub nplhaib electron microscopy nyob rau hauv qhov tsaus ntuj nti.Xwm Txheej 464, 571–574 (2010).
Kress, G. thiab Furtmüller, J. Efficient iterative scheme for ab initio tag nrho lub zog suav nrog siv dav hlau nthwv dej hauv paus.physics.Ed.B 54, 11169–11186 (1996).
Kress, G. thiab Joubert, D. Los ntawm ultrasoft pseudopotentials rau yoj txoj kev nrog projector amplification.physics.Ed.B 59, 1758–1775 (1999).
Perdue, JP, Burke, C., thiab Ernzerhof, M. Generalized gradient approximations ua yooj yim dua.physics.Reverend Wright.77, 3865–3868 (1996).
Grimme S., Anthony J., Erlich S., thiab Krieg H. Consistent and accurate initial parameterization of density functional variance correction (DFT-D) of 94-element H-Pu.J. Chemistry.physics.132, 154104 (2010).
Txoj haujlwm no tau txais kev txhawb nqa los ntawm National Key R&D Program ntawm Tuam Tshoj (2021YFA1400500, 2018YFA0305800, 2019YFA0307800, 2020YFF01014700, 2017YFA0206300), National Natural Science Foundation of China 4001, 22075001, 11974024, 11874359, 92165101, 11974388, 51991344) , Beijing Natural Science Foundation (2192022, Z190011), Beijing Distinguished Young Scientist Program (BJJWZYJH01201914430039), Guangdong Provincial Key Area Research and Development Program (2019B010934001), Suav Academy of Sciences Grant300 Kev Tshawb Fawb Txog Kev Tshawb Fawb Tuam Tshoj, Kev Tshawb Fawb Txog Kev Tshawb Fawb 30. Frontier Plan of Key scientific research (QYZDB-SSW-JSC019).JC ua tsaug rau Beijing Natural Science Foundation ntawm Tuam Tshoj (JQ22001) rau lawv txoj kev txhawb nqa.LW ua tsaug rau Lub Koom Haum rau Kev Txhawb Cov Hluas Innovation ntawm Suav Academy ntawm Kev Tshawb Fawb (2020009) rau lawv txoj kev txhawb nqa.Ib feem ntawm kev ua haujlwm tau ua tiav nyob rau hauv qhov chaw ruaj khov muaj zog sib nqus hlau nplaum ntawm High Magnetic Field Laboratory ntawm Suav Academy ntawm Kev Tshawb Fawb nrog kev txhawb nqa ntawm Anhui Province High Magnetic Field Laboratory.Cov kev pabcuam suav yog muab los ntawm Peking University supercomputing platform, Shanghai supercomputing center thiab Tianhe-1A supercomputer.
Эти авторы внесли равный вклад: Huifeng Tian, ​​Yinhang Ma, Zhenjiang Li, Mouyang Cheng, Shoucong Ning.
Huifeng Tian, ​​Zhenjian Li, Juijie Li, PeiChi Liao, Shulei Yu, Shizhuo Liu, Yifei Li, Xinyu Huang, Zhixin Yao, Li Lin, Xiaoxui Zhao, Ting Lei, Yanfeng Zhang, Yanlong Hou thiab Lei Liu
Tsev Kawm Ntawv ntawm Physics, Nqus Physics Key Laboratory, University of Chinese Academy of Sciences, Beijing, Suav
Department of Materials Science thiab Engineering, National University of Singapore, Singapore, Singapore
Beijing National Laboratory ntawm Molecular Sciences, Tsev Kawm Ntawv ntawm Chemistry thiab Molecular Engineering, Peking University, Beijing, Suav
Beijing National Laboratory rau Condensed Matter Physics, Lub koom haum ntawm Physics, Suav Academy ntawm Sciences, Beijing, Suav


Post lub sij hawm: Mar-02-2023
  • wechat
  • wechat