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Figure 1

Papers and patents in graphene research by year.
Papers and patents in graphene research by year.

Figure 2

Country/region distribution in graphene R&D.
Country/region distribution in graphene R&D.

Figure 3

Papers by the top five countries.
Papers by the top five countries.

Figure 4

Patents by the top five countries.
Patents by the top five countries.

Figure 5

Patent application flow in main countries.
Patent application flow in main countries.

Figure 6

Distribution of global research categories as assigned by CAS.
Distribution of global research categories as assigned by CAS.

Figure 7

Main technology areas distribution by year.
Main technology areas distribution by year.

Figure 8

Topics distribution of papers and patents in graphene research (before 2009).
Topics distribution of papers and patents in graphene research (before 2009).

Figure 9

Topics distribution of papers and patents in graphene research (2010–2016).
Topics distribution of papers and patents in graphene research (2010–2016).

Figure 10

Evolution of emerging terms of global papers and patents.
Evolution of emerging terms of global papers and patents.

Figure 11

Role distribution of substances reported in graphene research.
Role distribution of substances reported in graphene research.

Figure 12

Role trends of substances reported in graphene research.
Role trends of substances reported in graphene research.

Figure 13

Role evolution of emerging substances in graphene research.
Role evolution of emerging substances in graphene research.

Top 20 applicants in graphene research papers.

Organization NamesCountriesPatentsTypeYear RangePercentage (Last 3 Years)Top TermsRecent Terms
Chinese Academy of SciencesCN1,299Institute2007–201537%Fluoropolymers Chemical vapor deposition FilmsThree-dimensional printing Heat stabilizers Crystals
Samsung Electronics Co., Ltd.KR515Enterprise2007–201516%Electrodes Electroluminescent devices Semiconductor device fabricationChalcogenides Binding energy Lithium primary batteries
Ocean’s King Lighting Science & Technology Co., Ltd.CN439Enterprise2010–20130%Composites Secondary batteries Fluoropolymers-
Zhejiang UniversityCN270University2008–201549%Fluoropolymers Secondary batteries NanocompositesPhotoelectric cell electrodes Electric cables and wires Flexibility
LG Electronics, Inc.KR258Enterprise2009–201533%Secondary batteries Electroluminescent devices FluoropolymersAromatic hydrocarbons Polycyclic aromatic hydrocarbons Petroleum pitch
Harbin Institute of TechnologyCN222University2010–201561%Composites Fluoropolymers Secondary batteriesLithium-ion secondary batteries Aerogels Direct methanol fuel cells
Tsinghua UniversityCN213University2009–201536%Secondary batteries Electrodes FluoropolymersCathodes Electron emission Fuel cell cathodes
Shanghai Jiao Tong UniversityCN187University2009–201541%Composites Secondary batteries FluoropolymersElectrolytic capacitors Electrolytes Paper
International Business Machines CorporationUS186Enterprise2005–201511%Dielectric films Field effect transistors Semiconductor device fabricationElectrolytes Surface plasmon resonance Tunneling
Korea Advanced Institute of Science and TechnologyKR185Institute2008–201516%Nanowires Nanostructures NanoparticlesDistributed Bragg reflectors Energy storage systems Varistors
Southeast UniversityCN154University2010–201544%Composites Heat treatment NanoparticlesImpregnation Injection molding Orthopedic prosthetics
Jiangsu UniversityCN140University2010–201554%Nanocomposites Photolysis catalysts NanoparticlesAerogels Double layer capacitors Electric capacitance
University of JinanCN137University2010–201563%Antibodies and Immunoglobulins Immunosensors Blood serum albuminsMagnetic separation Amination Prostate-specific antigen
Beijing University of Chemical TechnologyCN135University2009–201541%Styrene-butadiene rubber Natural rubber NanoparticlesFireproofing agents ABS rubber Acrylic rubber
Fudan UniversityCN133University2010–201548%Electrodes Composites Lithium-ion secondary batteriesLithium-ion secondary batteries Double layer capacitors Electrospinning
University of Electronic Science and Technology of ChinaCN130University2010–201536%Coating process Films PolyestersElectric resistance Interference Optical modulators
Shanghai UniversityCN129University2009–201562%Composites Fluoropolymers Secondary batteriesLithium-ion secondary batteries Aerogels Dispersion of materials
Donghua UniversityCN120University2010–201548%Fluoropolymers Composites PolyoxyalkylenesCoupling agents Glass microspheres Pharmaceutical carriers
Korea Institute of Science and TechnologyKR117Institute2008–201521%Polyimides Solar cells NanoparticlesEnterobacteria phage M 13 Hydrogels Peptides
Baker Hughes Inc.US107Enterprise2008–201512%Nanoparticles Fullerenes SilsesquioxanesCrosslinking agents Ferrofluids Magnetic materials

Top 20 organizations in graphene research papers.

OrganizationCountryPapersTypeYears RPercentage (Last3 Years)Top TermsRecent Terms
Chinese Academy of SciencesCN2,973Institute1997–201645%Raman spectra; Nanocomposites; Surface structure Electrolytic polarization; Photothermal therapy; Mammary gland neoplasm
University of CaliforniaUS1,296University1994–201626%Band structure; Electric conductivity; Raman spectraOptical instruments; Thin film transistors; Ferroelectricity
Nanyang Technological UniversitySG890University2001–201638%Raman spectra; Nanoparticles; Surface structureTransition metal; Encapsulation; Photoluminescence
Tsinghua UniversityCN739University1998–201644%Raman spectra; Electric conductivity; Chemical vapor depositionPore structure; Ion transport; Dielectric films
Russian Academy of SciencesRU738Institute1999–201638%Electric conductivity; Density of states; Band structureLennard–Jones potential; Surface acoustic wave; Magnetocaloric effect
National University of SingaporeSG712University2000–201630%Nanoribbons; Electric conductivity; Raman spectra;Flexibility; Permeability; Battery electrolytes
The University of TexasUS672University2004–201625%Band structure; Electric conductivity; Field effect transistorsBand offset; Melting point; Raman spectroscopy
University of Science and Technology of ChinaCN616University2003–201641%Nanocomposites; Nanosheets; Electric conductivityPhase composition; Atomic layer deposition; Photocatalysts
Peking UniversityCN563University1996–201644%Raman spectra; Chemical vapor deposition; Band structureSuperconductivity; Semimetals; Cathodes
Fudan UniversityCN516University1994–201643%Nanocomposites; Nanosheets; NanoparticlesShubnikov-de Haas effect; Chronoamperometry; Crystal orientation
Zhejiang UniversityCN509University1997–201655%Nanosheets; Raman spectra; NanocompositesOpen circuit potential; Adsorptive wastewater treatment; Heterojunction solar cells
Nanjing UniversityCN468University2002–201646%Nanoparticles; Nanocomposites; Surface structureCrystal morphology; Drug delivery systems; Electrochemical analysis
Massachusetts Institute of TechnologyUS458University1989–201630%Raman spectra; Chemical vapor deposition; Electric conductivityThermoelectricity; Laser heating; Optical conductivity
Sungkyunkwan UniversityKR446University2007–201650%Raman spectra; Chemical vapor deposition; Field effect transistorsDouble-layer capacitor electrodes; Aerogels; Aminoplasts
Jilin UniversityCN414University2008–201649%Nanocomposites; Nanoparticles; Surface structureLithium-ion secondary batteries; Thermal analysis; Contact angle
Shanghai Jiao Tong UniversityCN397University2005–201652%Nanocomposites; Electric conductivity; NanosheetsLithium-ion secondary batteries; Aerogels; Electrochemical reaction catalysts
Seoul National UniversityKR392University2004–201649%Raman spectra; Surface structure; Electric conductivityCapacitors; Intercalation; Conducting polymers
Tohoku UniversityJP370University1998–201626%Band structure; Electric conductivity; Fermi levelFar–IR detectors; Grain size; Hot electrons
Hunan UniversityCN368University2001–201661%Nanoparticles; Nanocomposites; Cyclic voltammetryLithium-ion secondary batteries; Mid-IR spectra; Chemical potential
Tianjin UniversityCN359University2003–201657%Nanoparticles; Raman spectra; NanosheetsLithium-ion secondary batteries; Solar cells; Thickness
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