메뉴 건너뛰기




Volumn 86, Issue , 2015, Pages 38-45

Preparation of few-layer graphene nanosheets by radio-frequency induction thermal plasma

Author keywords

[No Author keywords available]

Indexed keywords

DIFFRACTOMETERS; FIELD EMISSION MICROSCOPES; GRAPHENE; NANOSHEETS; RADIO WAVES; SCANNING ELECTRON MICROSCOPY;

EID: 84924551486     PISSN: 00086223     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.carbon.2015.01.021     Document Type: Article
Times cited : (56)

References (51)
  • 1
    • 84886392488 scopus 로고    scopus 로고
    • Versatile graphene-promoting photocatalytic performance of semiconductors: basic principles, synthesis, solar energy conversion, and environmental applications
    • W.G. Tu, Y. Zhou, and Z.G. Zou Versatile graphene-promoting photocatalytic performance of semiconductors: basic principles, synthesis, solar energy conversion, and environmental applications Adv Funct Mater 23 40 2013 4996 5008
    • (2013) Adv Funct Mater , vol.23 , Issue.40 , pp. 4996-5008
    • Tu, W.G.1    Zhou, Y.2    Zou, Z.G.3
  • 2
    • 84884212992 scopus 로고    scopus 로고
    • Solvent-exfoliated and functionalized graphene with assistance of supercritical carbon dioxide
    • L.H. Li, X.L. Zheng, J.J. Wang, Q. Sun, and Q. Xu Solvent-exfoliated and functionalized graphene with assistance of supercritical carbon dioxide ACS Sustainable Chem Eng 1 1 2013 144 151
    • (2013) ACS Sustainable Chem Eng , vol.1 , Issue.1 , pp. 144-151
    • Li, L.H.1    Zheng, X.L.2    Wang, J.J.3    Sun, Q.4    Xu, Q.5
  • 3
    • 84896091676 scopus 로고    scopus 로고
    • Recent advances in design and fabrication of electrochemical supercapacitors with high energy densities
    • J. Yan, Q. Wang, T. Wei, and Z.J. Fan Recent advances in design and fabrication of electrochemical supercapacitors with high energy densities Adv Energy Mater 4 4 2014 1 43
    • (2014) Adv Energy Mater , vol.4 , Issue.4 , pp. 1-43
    • Yan, J.1    Wang, Q.2    Wei, T.3    Fan, Z.J.4
  • 4
    • 84870402077 scopus 로고    scopus 로고
    • Recent progress on graphene-based photocatalysts: current status and future perspectives
    • N. Zhang, Y.H. Zhang, and Y.J. Xu Recent progress on graphene-based photocatalysts: current status and future perspectives Nanoscale 4 19 2012 5792 5813
    • (2012) Nanoscale , vol.4 , Issue.19 , pp. 5792-5813
    • Zhang, N.1    Zhang, Y.H.2    Xu, Y.J.3
  • 5
    • 75749138138 scopus 로고    scopus 로고
    • P25-graphene composite as a high performance photocatalyst
    • H. Zhang, X.J. Lv, Y.M. Li, Y. Wang, and J.H. Li P25-graphene composite as a high performance photocatalyst ACS Nano 4 1 2010 380 386
    • (2010) ACS Nano , vol.4 , Issue.1 , pp. 380-386
    • Zhang, H.1    Lv, X.J.2    Li, Y.M.3    Wang, Y.4    Li, J.H.5
  • 6
    • 84896299065 scopus 로고    scopus 로고
    • Electrochemical sensor for ultrasensitive determination of isoquercitrin and baicalin based on DM-β-cyclodextrin functionalized graphene nanosheets
    • Z. Liu, A. Zhang, Y. Guo, and C. Dong Electrochemical sensor for ultrasensitive determination of isoquercitrin and baicalin based on DM-β-cyclodextrin functionalized graphene nanosheets Biosens Bioelectron 58 2014 242 248
    • (2014) Biosens Bioelectron , vol.58 , pp. 242-248
    • Liu, Z.1    Zhang, A.2    Guo, Y.3    Dong, C.4
  • 7
    • 82955229764 scopus 로고    scopus 로고
    • Controlling graphene properties through chemistry
    • Y. Gogotsi Controlling graphene properties through chemistry J Phys Chem Lett 2 19 2011 2509 2510
    • (2011) J Phys Chem Lett , vol.2 , Issue.19 , pp. 2509-2510
    • Gogotsi, Y.1
  • 8
    • 84896910340 scopus 로고    scopus 로고
    • Progress in flexible lithium batteries and future prospects
    • G.M. Zhou, F. Li, and H.M. Cheng Progress in flexible lithium batteries and future prospects Energy Environ Sci 7 4 2014 1307 1338
    • (2014) Energy Environ Sci , vol.7 , Issue.4 , pp. 1307-1338
    • Zhou, G.M.1    Li, F.2    Cheng, H.M.3
  • 9
    • 65249179425 scopus 로고    scopus 로고
    • Synthesis of graphene sheets with high electrical conductivity and good thermal stability by hydrogen arc discharge exfoliation
    • Z.S. Wu, W.C. Ren, L.B. Gao, J.P. Zhao, Z.P. Chen, and B.L. Liu et al. Synthesis of graphene sheets with high electrical conductivity and good thermal stability by hydrogen arc discharge exfoliation ACS Nano 3 2 2009 411 417
    • (2009) ACS Nano , vol.3 , Issue.2 , pp. 411-417
    • Wu, Z.S.1    Ren, W.C.2    Gao, L.B.3    Zhao, J.P.4    Chen, Z.P.5    Liu, B.L.6
  • 10
    • 84872708134 scopus 로고    scopus 로고
    • Graphene film growth on polycrystalline metals
    • R.S. Edwards, and K.S. Coleman Graphene film growth on polycrystalline metals Acc Chem Res 46 1SI 2013 23 30
    • (2013) Acc Chem Res , vol.46 , Issue.1 , pp. 23-30
    • Edwards, R.S.1    Coleman, K.S.2
  • 11
    • 84896914623 scopus 로고    scopus 로고
    • Low-cost and large-scale synthesis of graphene nanosheets by arc discharge in air
    • Z.Y. Wang, N. Li, Z.J. Shi, and Z.N. Gu Low-cost and large-scale synthesis of graphene nanosheets by arc discharge in air Nanotechnology 21 17 2010 175602
    • (2010) Nanotechnology , vol.21 , Issue.17 , pp. 175602
    • Wang, Z.Y.1    Li, N.2    Shi, Z.J.3    Gu, Z.N.4
  • 13
    • 34548825669 scopus 로고    scopus 로고
    • Single sheet functionalized graphene by oxidation and thermal expansion of graphite
    • M.J. McAllister, J.L. Li, D.H. Adamson, H.C. Schniepp, A.A. Abdala, and J. Liu et al. Single sheet functionalized graphene by oxidation and thermal expansion of graphite Chem Mater 19 18 2007 4396 4404
    • (2007) Chem Mater , vol.19 , Issue.18 , pp. 4396-4404
    • McAllister, M.J.1    Li, J.L.2    Adamson, D.H.3    Schniepp, H.C.4    Abdala, A.A.5    Liu, J.6
  • 15
    • 79951894326 scopus 로고    scopus 로고
    • Simple and scalable route for the 'bottom-up' synthesis of few-layer graphene platelets and thin films
    • C.R. Herron, K.S. Coleman, R.S. Edwards, and B.G. Mendis Simple and scalable route for the 'bottom-up' synthesis of few-layer graphene platelets and thin films J Mater Chem 21 10 2011 3378 3383
    • (2011) J Mater Chem , vol.21 , Issue.10 , pp. 3378-3383
    • Herron, C.R.1    Coleman, K.S.2    Edwards, R.S.3    Mendis, B.G.4
  • 16
    • 84866878106 scopus 로고    scopus 로고
    • Experimental study on coal pyrolysis to acetylene in thermal plasma reactors
    • B.H. Yan, P.C. Xu, C.Y. Guo, Y. Jin, and Y. Cheng Experimental study on coal pyrolysis to acetylene in thermal plasma reactors Chem Eng J 207 SI 2012 109 116
    • (2012) Chem Eng J , vol.207 , Issue.SI , pp. 109-116
    • Yan, B.H.1    Xu, P.C.2    Guo, C.Y.3    Jin, Y.4    Cheng, Y.5
  • 17
    • 79951603164 scopus 로고    scopus 로고
    • Plasma-assisted synthesis of chlorinated polyvinyl chloride (CPVC) using a gas-solid contacting process
    • W. Lu, T.F. Cao, Q. Wang, and Y. Cheng Plasma-assisted synthesis of chlorinated polyvinyl chloride (CPVC) using a gas-solid contacting process Plasma Processes Polym 8 2 2011 94 99
    • (2011) Plasma Processes Polym , vol.8 , Issue.2 , pp. 94-99
    • Lu, W.1    Cao, T.F.2    Wang, Q.3    Cheng, Y.4
  • 18
    • 84872690496 scopus 로고    scopus 로고
    • Synthesis of uniform octahedral tungsten trioxide by RF induction thermal plasma and its application in gas sensing
    • H. Zhang, M. Yao, L. Bai, W. Xiang, H. Jin, and J. Li et al. Synthesis of uniform octahedral tungsten trioxide by RF induction thermal plasma and its application in gas sensing CrystEngComm 15 2013 1432 1438
    • (2013) CrystEngComm , vol.15 , pp. 1432-1438
    • Zhang, H.1    Yao, M.2    Bai, L.3    Xiang, W.4    Jin, H.5    Li, J.6
  • 19
    • 84864135799 scopus 로고    scopus 로고
    • Radio-frequency atmospheric-pressure plasma synthesis of ultrafine ZrC powders
    • L. Bai, H. Zhang, H. Jin, F. Yuan, S. Huang, and J. Li Radio-frequency atmospheric-pressure plasma synthesis of ultrafine ZrC powders Int J Appl Ceram Technol 10 s1 2012 E274 E281
    • (2012) Int J Appl Ceram Technol , vol.10 , Issue.S1 , pp. E274-E281
    • Bai, L.1    Zhang, H.2    Jin, H.3    Yuan, F.4    Huang, S.5    Li, J.6
  • 20
    • 79954624504 scopus 로고    scopus 로고
    • Thermal plasmas for nanofabrication
    • M. Shigeta, and A.B. Murphy Thermal plasmas for nanofabrication J Phys D Appl Phys 44 17 2011 174025
    • (2011) J Phys D Appl Phys , vol.44 , Issue.17 , pp. 174025
    • Shigeta, M.1    Murphy, A.B.2
  • 21
    • 34248570861 scopus 로고    scopus 로고
    • Plasma-aided nanofabrication: where is the cutting edge?
    • K. Ostrikov, and A.B. Murphy Plasma-aided nanofabrication: where is the cutting edge? J Phys D Appl Phys 40 8 2007 2223 2241
    • (2007) J Phys D Appl Phys , vol.40 , Issue.8 , pp. 2223-2241
    • Ostrikov, K.1    Murphy, A.B.2
  • 22
    • 2442608578 scopus 로고    scopus 로고
    • Plasma power can make better powders
    • M. Boulos Plasma power can make better powders Met Powder Rep 59 5 2004 16 21
    • (2004) Met Powder Rep , vol.59 , Issue.5 , pp. 16-21
    • Boulos, M.1
  • 24
    • 0035836507 scopus 로고    scopus 로고
    • Carbon black processing by thermal plasma. Analysis of the particle formation mechanism
    • F. Fabry, G. Flamant, and L. Fulcheri Carbon black processing by thermal plasma. Analysis of the particle formation mechanism Chem Eng Sci 56 6 2001 2123 2132
    • (2001) Chem Eng Sci , vol.56 , Issue.6 , pp. 2123-2132
    • Fabry, F.1    Flamant, G.2    Fulcheri, L.3
  • 25
    • 0036132771 scopus 로고    scopus 로고
    • Plasma processing: a step towards the production of new grades of carbon black
    • L. Fulcheri, N. Probst, G. Flamant, F. Fabry, E. Grivei, and X. Bourrat Plasma processing: a step towards the production of new grades of carbon black Carbon 40 2 2002 169 176
    • (2002) Carbon , vol.40 , Issue.2 , pp. 169-176
    • Fulcheri, L.1    Probst, N.2    Flamant, G.3    Fabry, F.4    Grivei, E.5    Bourrat, X.6
  • 26
  • 27
    • 18844424050 scopus 로고    scopus 로고
    • Production of hydrogen and carbon black by methane decomposition using DC-RF hybrid thermal plasmas
    • K.S. Kim, J.H. Seo, J.S. Nam, W.T. Ju, and S.H. Hong Production of hydrogen and carbon black by methane decomposition using DC-RF hybrid thermal plasmas IEEE Trans Plasma Sci 33 22 2005 813 823
    • (2005) IEEE Trans Plasma Sci , vol.33 , Issue.22 , pp. 813-823
    • Kim, K.S.1    Seo, J.H.2    Nam, J.S.3    Ju, W.T.4    Hong, S.H.5
  • 28
    • 24944455933 scopus 로고    scopus 로고
    • Induction plasma synthesis of fullerenes and nanotubes using carbon black-nickel particles
    • G. Cota-Sanchez, G. Soucy, A. Huczko, and H. Lange Induction plasma synthesis of fullerenes and nanotubes using carbon black-nickel particles Carbon 43 15 2005 3153 3166
    • (2005) Carbon , vol.43 , Issue.15 , pp. 3153-3166
    • Cota-Sanchez, G.1    Soucy, G.2    Huczko, A.3    Lange, H.4
  • 30
    • 0033353652 scopus 로고    scopus 로고
    • Semi-continuous synthesis of single-walled carbon nanotubes by a hydrogen arc discharge method
    • C. Liu, H.T. Cong, F. Li, P.H. Tan, H.M. Cheng, and K. Lu et al. Semi-continuous synthesis of single-walled carbon nanotubes by a hydrogen arc discharge method Carbon 37 11 1999 1865 1868
    • (1999) Carbon , vol.37 , Issue.11 , pp. 1865-1868
    • Liu, C.1    Cong, H.T.2    Li, F.3    Tan, P.H.4    Cheng, H.M.5    Lu, K.6
  • 31
    • 2342462395 scopus 로고    scopus 로고
    • Direct synthesis of high purity single-walled carbon nanotube fibers by arc discharge
    • H.J. Li, L.H. Guan, Z.J. Shi, and Z.N. Gu Direct synthesis of high purity single-walled carbon nanotube fibers by arc discharge J Phys Chem B 108 15 2004 4573 4575
    • (2004) J Phys Chem B , vol.108 , Issue.15 , pp. 4573-4575
    • Li, H.J.1    Guan, L.H.2    Shi, Z.J.3    Gu, Z.N.4
  • 32
    • 27744499280 scopus 로고    scopus 로고
    • High-efficient synthesis of double-walled carbon nanotubes by arc discharge method using chloride as a promoter
    • H.X. Qiu, Z.J. Shi, L.H. Guan, L.P. You, M. Gao, and S.L. Zhang et al. High-efficient synthesis of double-walled carbon nanotubes by arc discharge method using chloride as a promoter Carbon 44 3 2006 516 521
    • (2006) Carbon , vol.44 , Issue.3 , pp. 516-521
    • Qiu, H.X.1    Shi, Z.J.2    Guan, L.H.3    You, L.P.4    Gao, M.5    Zhang, S.L.6
  • 33
    • 70350596004 scopus 로고    scopus 로고
    • Synthesis of single-walled carbon nanotubes by induction thermal plasma
    • K.S. Kim, A. Moradian, J. Mostaghimi, Y. Alinejad, A. Shahverdi, and B. Simard et al. Synthesis of single-walled carbon nanotubes by induction thermal plasma Nano Res 2 10SI 2009 800 817
    • (2009) Nano Res , vol.2 , Issue.10 , pp. 800-817
    • Kim, K.S.1    Moradian, A.2    Mostaghimi, J.3    Alinejad, Y.4    Shahverdi, A.5    Simard, B.6
  • 35
    • 67650066808 scopus 로고    scopus 로고
    • Novel magnetic properties of graphene: presence of both ferromagnetic and antiferromagnetic features and other aspects
    • H. Matte, K.S. Subrahmanyam, and C. Rao Novel magnetic properties of graphene: presence of both ferromagnetic and antiferromagnetic features and other aspects J Phys Chem C 113 23 2009 9982 9985
    • (2009) J Phys Chem C , vol.113 , Issue.23 , pp. 9982-9985
    • Matte, H.1    Subrahmanyam, K.S.2    Rao, C.3
  • 36
    • 67349197090 scopus 로고    scopus 로고
    • A non-thermal plasma process for the gas phase synthesis of carbon nanoparticles
    • M. Moreno-Couranjoua, M. Monthiouxb, J. Gonzalez-Aguilara, and L. Fulcheria A non-thermal plasma process for the gas phase synthesis of carbon nanoparticles Carbon 47 10 2009 2310 2321
    • (2009) Carbon , vol.47 , Issue.10 , pp. 2310-2321
    • Moreno-Couranjoua, M.1    Monthiouxb, M.2    Gonzalez-Aguilara, J.3    Fulcheria, L.4
  • 37
    • 84900318624 scopus 로고    scopus 로고
    • Direct, nonoxidative conversion of methane to ethylene, aromatics, and hydrogen
    • X.G. Guo, G.Z. Fang, G. Li, H. Ma, H.J. Fan, and L. Yu et al. Direct, nonoxidative conversion of methane to ethylene, aromatics, and hydrogen Science 344 6184 2014 616 619
    • (2014) Science , vol.344 , Issue.6184 , pp. 616-619
    • Guo, X.G.1    Fang, G.Z.2    Li, G.3    Ma, H.4    Fan, H.J.5    Yu, L.6
  • 38
    • 77249156012 scopus 로고    scopus 로고
    • Conversion of natural gas to C2 product, hydrogen and carbon black using a catalytic plasma reaction
    • W. Cho, Y.C. Kim, and S. Kim Conversion of natural gas to C2 product, hydrogen and carbon black using a catalytic plasma reaction J Ind Eng Chem 16 2010 20 26
    • (2010) J Ind Eng Chem , vol.16 , pp. 20-26
    • Cho, W.1    Kim, Y.C.2    Kim, S.3
  • 39
    • 84902507008 scopus 로고    scopus 로고
    • Synthesis of nanostructured MgO powders with photoluminescence by plasma-intensified pyrohydrolysis process of bischofite from brine
    • H. Zhang, T. Cao, and Y. Cheng Synthesis of nanostructured MgO powders with photoluminescence by plasma-intensified pyrohydrolysis process of bischofite from brine Green Process Synth 3 3 2014 215 222
    • (2014) Green Process Synth , vol.3 , Issue.3 , pp. 215-222
    • Zhang, H.1    Cao, T.2    Cheng, Y.3
  • 40
    • 84897143372 scopus 로고    scopus 로고
    • Optical emission spectroscopy diagnostic and thermodynamic analysis of thermal plasma enhanced nanocrystalline silicon CVD process
    • T.F. Cao, H.B. Zhang, B.H. Yan, W. Lu, and Y. Cheng Optical emission spectroscopy diagnostic and thermodynamic analysis of thermal plasma enhanced nanocrystalline silicon CVD process RSC Adv 4 29 2014 15131 15137
    • (2014) RSC Adv , vol.4 , Issue.29 , pp. 15131-15137
    • Cao, T.F.1    Zhang, H.B.2    Yan, B.H.3    Lu, W.4    Cheng, Y.5
  • 41
    • 84886875229 scopus 로고    scopus 로고
    • High rate deposition of nanocrystalline silicon by thermal plasma enhanced CVD
    • T.F. Cao, H.B. Zhang, B.H. Yan, and Y. Cheng High rate deposition of nanocrystalline silicon by thermal plasma enhanced CVD RSC Adv 3 43 2013 20157 20162
    • (2013) RSC Adv , vol.3 , Issue.43 , pp. 20157-20162
    • Cao, T.F.1    Zhang, H.B.2    Yan, B.H.3    Cheng, Y.4
  • 42
    • 34249012144 scopus 로고    scopus 로고
    • Optical emission spectroscopy diagnostics of inductively-driven plasmas in argon gas at low pressures
    • S. Iordanova, and I. Koleva Optical emission spectroscopy diagnostics of inductively-driven plasmas in argon gas at low pressures Spectrochim Acta B 62 4 2007 344 356
    • (2007) Spectrochim Acta B , vol.62 , Issue.4 , pp. 344-356
    • Iordanova, S.1    Koleva, I.2
  • 43
    • 79954577461 scopus 로고    scopus 로고
    • Plasma-enhanced chemical vapour deposition of inorganic nanomaterials using a chloride precursor
    • R. Yang, J. Zheng, W. Li, J.L. Qu, and X.G. Li Plasma-enhanced chemical vapour deposition of inorganic nanomaterials using a chloride precursor J Phys D Appl Phys 44 17 2011 174015
    • (2011) J Phys D Appl Phys , vol.44 , Issue.17 , pp. 174015
    • Yang, R.1    Zheng, J.2    Li, W.3    Qu, J.L.4    Li, X.G.5
  • 45
    • 66149120053 scopus 로고    scopus 로고
    • Diagnosis of methane plasma generated in an atmospheric pressure DBD Micro-Jet by optical emission spectroscopy
    • 0352033
    • J.F. Zhang, X.C. Bian, Q. Chen, F.P. Liu, and Z.W. Liu Diagnosis of methane plasma generated in an atmospheric pressure DBD Micro-Jet by optical emission spectroscopy Chinese Phys Lett 26 0352033 2009
    • (2009) Chinese Phys Lett , vol.26
    • Zhang, J.F.1    Bian, X.C.2    Chen, Q.3    Liu, F.P.4    Liu, Z.W.5
  • 46
  • 47
    • 76249118219 scopus 로고    scopus 로고
    • Fabrication of graphene flakes composed of multi-layer graphene sheets using a thermal plasma jet system
    • 0956019
    • J. Kim, S.B. Heo, G.H. Gu, and J.S. Suh Fabrication of graphene flakes composed of multi-layer graphene sheets using a thermal plasma jet system Nanotechnology 21 0956019 2010
    • (2010) Nanotechnology , vol.21
    • Kim, J.1    Heo, S.B.2    Gu, G.H.3    Suh, J.S.4
  • 48
    • 70350031601 scopus 로고    scopus 로고
    • Large scale synthesis of N-doped multi-layered graphene sheets by simple arc-discharge method
    • N. Li, Z.Y. Wang, K.K. Zhao, Z.J. Shi, Z.N. Gu, and S.K. Xu Large scale synthesis of N-doped multi-layered graphene sheets by simple arc-discharge method Carbon 48 1 2010 255 259
    • (2010) Carbon , vol.48 , Issue.1 , pp. 255-259
    • Li, N.1    Wang, Z.Y.2    Zhao, K.K.3    Shi, Z.J.4    Gu, Z.N.5    Xu, S.K.6
  • 49
    • 57249092731 scopus 로고    scopus 로고
    • Transferring and identification of single- and few-layer graphene on arbitrary substrates
    • A. Reina, H.B. Son, L.Y. Jiao, B. Fan, M.S. Dresselhaus, and Z.F. Liu et al. Transferring and identification of single- and few-layer graphene on arbitrary substrates J Phys Chem C 112 46 2008 17741 17744
    • (2008) J Phys Chem C , vol.112 , Issue.46 , pp. 17741-17744
    • Reina, A.1    Son, H.B.2    Jiao, L.Y.3    Fan, B.4    Dresselhaus, M.S.5    Liu, Z.F.6
  • 50
    • 67649268449 scopus 로고    scopus 로고
    • RF plasma synthesis of nickel nanopowders via hydrogen reduction of nickel hydroxide/carbonate
    • L.Y. Bai, J.M. Fan, P. Hu, F.L. Yuan, J.L. Li, and Q. Tang RF plasma synthesis of nickel nanopowders via hydrogen reduction of nickel hydroxide/carbonate J Alloy Compd 481 1-2 2009 563 567
    • (2009) J Alloy Compd , vol.481 , Issue.1-2 , pp. 563-567
    • Bai, L.Y.1    Fan, J.M.2    Hu, P.3    Yuan, F.L.4    Li, J.L.5    Tang, Q.6
  • 51
    • 84856402494 scopus 로고    scopus 로고
    • Single-step pathway for the synthesis of tungsten nanosized powders by RF induction thermal plasma
    • H. Zhang, L. Bai, P. Hu, F. Yuan, and J. Li Single-step pathway for the synthesis of tungsten nanosized powders by RF induction thermal plasma Int J Refract Met Hard Mater 31 2012 33 38
    • (2012) Int J Refract Met Hard Mater , vol.31 , pp. 33-38
    • Zhang, H.1    Bai, L.2    Hu, P.3    Yuan, F.4    Li, J.5


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.