{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T11:50:11Z","timestamp":1776426611145,"version":"3.51.2"},"reference-count":83,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2021,1,15]],"date-time":"2021-01-15T00:00:00Z","timestamp":1610668800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this work, we have designed and simulated a graphene field effect transistor (GFET) with the purpose of developing a sensitive biosensor for methanethiol, a biomarker for bacterial infections. The surface of a graphene layer is functionalized by manipulation of its surface structure and is used as the channel of the GFET. Two methods, doping the crystal structure of graphene and decorating the surface by transition metals (TMs), are utilized to change the electrical properties of the graphene layers to make them suitable as a channel of the GFET. The techniques also change the surface chemistry of the graphene, enhancing its adsorption characteristics and making binding between graphene and biomarker possible. All the physical parameters are calculated for various variants of graphene in the absence and presence of the biomarker using counterpoise energy-corrected density functional theory (DFT). The device was modelled using COMSOL Multiphysics. Our studies show that the sensitivity of the device is affected by structural parameters of the device, the electrical properties of the graphene, and with adsorption of the biomarker. It was found that the devices made of graphene layers decorated with TM show higher sensitivities toward detecting the biomarker compared with those made by doped graphene layers.<\/jats:p>","DOI":"10.3390\/s21020580","type":"journal-article","created":{"date-parts":[[2021,1,20]],"date-time":"2021-01-20T03:34:25Z","timestamp":1611113665000},"page":"580","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Finite Element Modelling of Bandgap Engineered Graphene FET with the Application in Sensing Methanethiol Biomarker"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3830-9583","authenticated-orcid":false,"given":"Paramjot","family":"Singh","sequence":"first","affiliation":[{"name":"Department of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G1M8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7180-5389","authenticated-orcid":false,"given":"Parsoua","family":"Abedini Sohi","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G1M8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mojtaba","family":"Kahrizi","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, Concordia University, Montreal, QC H3G1M8, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,1,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"487","DOI":"10.1038\/nnano.2010.89","article-title":"Graphene transistors","volume":"5","author":"Schwierz","year":"2010","journal-title":"Nat. Nanotechnol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"749","DOI":"10.1038\/nphoton.2012.262","article-title":"Graphene plasmonics","volume":"6","author":"Grigorenko","year":"2012","journal-title":"Nat. Photonics"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1103\/PhysRevB.78.075435","article-title":"Band structure engineering of graphene by strain: First-principles calculations","volume":"78","author":"Gui","year":"2008","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2748","DOI":"10.1021\/nl0617033","article-title":"Electronic Structure and Stability of Semiconducting Graphene Nanoribbons","volume":"6","author":"Barone","year":"2006","journal-title":"Nano Lett."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1353","DOI":"10.1039\/c2nr32453a","article-title":"Semiconducting graphene: Converting graphene from semimetal to semiconductor","volume":"5","author":"Lu","year":"2013","journal-title":"Nanoscale"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1038\/srep41713","article-title":"Determining the nature of the gap in semiconducting graphene","volume":"7","author":"Prestigiacomo","year":"2017","journal-title":"Sci. Rep."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1103\/PhysRevB.78.205403","article-title":"Mobility in semiconducting graphene nanoribbons: Phonon, impurity, and edge roughness scattering","volume":"78","author":"Fang","year":"2008","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1103\/PhysRevLett.111.096803","article-title":"Spatially separated spin carriers in spin-semiconducting graphene nanoribbons","volume":"111","author":"Wang","year":"2013","journal-title":"Phys. Rev. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1229","DOI":"10.1126\/science.1150878","article-title":"Chemically derived, ultrasmooth graphene nanoribbon semiconductors","volume":"319","author":"Li","year":"2008","journal-title":"Science"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"8924","DOI":"10.1021\/acsnano.7b03220","article-title":"High-Performance Charge Transport in Semiconducting Armchair Graphene Nanoribbons Grown Directly on Germanium","volume":"11","author":"Jacobberger","year":"2017","journal-title":"ACS Nano"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"470","DOI":"10.1038\/nature09211","article-title":"Atomically precise bottom-up fabrication of graphene nanoribbons","volume":"466","author":"Cai","year":"2010","journal-title":"Nature"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"113960","DOI":"10.1016\/j.physe.2020.113960","article-title":"Bandgap engineering in armchair graphene nanoribbon of zigzag-armchair-zigzag based Nano-FET: A DFT investigation","volume":"118","author":"Singh","year":"2020","journal-title":"Phys. E Low-Dimens. Syst. Nanostruct."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"5783","DOI":"10.1016\/j.apsusc.2010.03.088","article-title":"Structural and electronic properties of H-passivated graphene","volume":"256","author":"AlZahrani","year":"2010","journal-title":"Appl. Surf. Sci."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1103\/PhysRevB.85.125403","article-title":"Strain-induced band gaps in bilayer graphene","volume":"85","author":"Verberck","year":"2012","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Sahalianov, I.Y., Radchenko, T.M., Tatarenko, V.A., Cuniberti, G., and Prylutskyy, Y.I. (2019). Straintronics in graphene: Extra large electronic band gap induced by tensile and shear strains. J. Appl. Phys., 126.","DOI":"10.1063\/1.5095600"},{"key":"ref_16","first-page":"845","article-title":"Electronic properties of boron and nitrogen doped graphene nanoribbons and its application for graphene electronics","volume":"375","author":"Huang","year":"2011","journal-title":"Phys. Lett. Sect. A Gen. At. Solid State Phys."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"64","DOI":"10.1016\/j.physe.2013.07.009","article-title":"Semi-metallic to semiconducting transition in graphene nanosheet with site specific co-doping of boron and nitrogen","volume":"56","author":"Nath","year":"2014","journal-title":"Phys. E Low-Dimens. Syst. Nanostruct."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1103\/PhysRevB.79.035421","article-title":"Electric field tuning of the band gap in graphene multilayers","volume":"79","author":"Avetisyan","year":"2009","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_19","first-page":"1","article-title":"Energy gap tuning in graphene on hexagonal boron nitride bilayer system","volume":"81","author":"Zasada","year":"2010","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1021\/acssensors.9b02137","article-title":"Graphene Field Effect Transistor-Based Immunosensor for Ultrasensitive Noncompetitive Detection of Small Antigens","volume":"5","author":"Kanai","year":"2020","journal-title":"ACS Sens."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1002\/adma.201190200","article-title":"Graphene Sensors: Polycrystalline Graphene Ribbons as Chemiresistors","volume":"24","author":"Estrada","year":"2012","journal-title":"Adv. Mater."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Soltani, A., Kuschewski, F., Bonmann, M., Generalov, A., Vorobiev, A., Ludwig, F., Wiecha, M.M., \u010cibirait\u0117, D., Walla, F., and Winnerl, S. (2020). Direct nanoscopic observation of plasma waves in the channel of a graphene field-effect transistor. Light Sci. Appl., 9.","DOI":"10.1038\/s41377-020-0321-0"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"12488","DOI":"10.1109\/JSEN.2020.3000583","article-title":"Graphene Field Effect Transistor Biosensors based on Aptamer for Amyloid-\u03b2 Detection","volume":"20","author":"Salehirozveh","year":"2020","journal-title":"IEEE Sens. J."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1038\/s41467-020-16979-y","article-title":"Selective ion sensing with high resolution large area graphene field effect transistor arrays","volume":"11","author":"Fakih","year":"2020","journal-title":"Nat. Commun."},{"key":"ref_25","first-page":"1","article-title":"Graphene Plasmonic Fractal Metamaterials for Broadband Photodetectors","volume":"10","author":"Spirito","year":"2020","journal-title":"Sci. Rep."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1038\/nnano.2009.292","article-title":"Ultrafast graphene photodetector","volume":"4","author":"Xia","year":"2009","journal-title":"Nat. Nanotechnol."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Guo, J., Li, J., Liu, C., Yin, Y., Wang, W., Ni, Z., Fu, Z., Yu, H., Xu, Y., and Shi, Y. (2020). High-performance silicon\u2212graphene hybrid plasmonic waveguide photodetectors beyond 1.55 \u03bcm. Light Sci. Appl., 9.","DOI":"10.1038\/s41377-020-0263-6"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"11190","DOI":"10.1021\/acsnano.0c02738","article-title":"Ultrafast, Zero-Bias, Graphene Photodetectors with Polymeric Gate Dielectric on Passive Photonic Waveguides","volume":"14","author":"Marconi","year":"2020","journal-title":"ACS Nano"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"14188","DOI":"10.1039\/D0NR00139B","article-title":"A broadband all-fiber integrated graphene photodetector with CNT-enhanced responsivity","volume":"12","author":"Zhuo","year":"2020","journal-title":"Nanoscale"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"488","DOI":"10.1021\/acsphotonics.9b01585","article-title":"Ultrafast Plasmonic Graphene Photodetector Based on the Channel Photothermoelectric Effect","volume":"7","author":"Gosciniak","year":"2020","journal-title":"ACS Photonics"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"363","DOI":"10.1038\/nnano.2012.60","article-title":"Hybrid graphene\u011dquantum dot phototransistors with ultrahigh gain","volume":"7","author":"Konstantatos","year":"2012","journal-title":"Nat. Nanotechnol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1016\/j.carbon.2020.02.030","article-title":"Excellent performance in vertical graphene-C60-graphene heterojunction phototransistors with a tunable bi-directionality","volume":"162","author":"Pan","year":"2020","journal-title":"Carbon N. Y."},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Han, J., He, M., Yang, M., Han, Q., Wang, F., Zhong, F., Xu, M., Li, Q., Zhu, H., and Shan, C. (2020). Light-modulated vertical heterojunction phototransistors with distinct logical photocurrents. Light Sci. Appl., 9.","DOI":"10.1038\/s41377-020-00406-4"},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"803","DOI":"10.1021\/nn901703e","article-title":"Graphene mode-locked ultrafast laser","volume":"4","author":"Sun","year":"2010","journal-title":"ACS Nano"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1016\/j.aca.2014.10.023","article-title":"Interactions of DNA with graphene and sensing applications of graphene field-effect transistor devices: A review","volume":"853","author":"Green","year":"2015","journal-title":"Anal. Chim. Acta"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"652","DOI":"10.1038\/nmat1967","article-title":"Detection of individual gas molecules adsorbed on graphene","volume":"6","author":"Schedin","year":"2007","journal-title":"Nat. Mater."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"6711","DOI":"10.1021\/acsanm.0c01150","article-title":"High-Performance Strain Sensors Based on Vertically Aligned Piezoelectric Zinc Oxide Nanowire Array\/Graphene Nanohybrids","volume":"3","author":"Panth","year":"2020","journal-title":"ACS Appl. Nano Mater."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"4507","DOI":"10.1021\/acsnano.6b08027","article-title":"Bin Flexible Piezoelectric-Induced Pressure Sensors for Static Measurements Based on Nanowires\/Graphene Heterostructures","volume":"11","author":"Chen","year":"2017","journal-title":"ACS Nano"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"314","DOI":"10.1016\/j.bios.2014.10.017","article-title":"A new aptamer\/graphene interdigitated gold electrode piezoelectric sensor for rapid and specific detection of Staphylococcus aureus","volume":"65","author":"Lian","year":"2015","journal-title":"Biosens. Bioelectron."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"111","DOI":"10.1063\/1.4802799","article-title":"Graphene based piezoresistive pressure sensor","volume":"102","author":"Zhu","year":"2013","journal-title":"Appl. Phys. Lett."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1038\/srep00908","article-title":"Sensitive real-time monitoring of refractive indexes using a novel graphene-based optical sensor","volume":"2","author":"Xing","year":"2012","journal-title":"Sci. Rep."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"6903","DOI":"10.1007\/s00216-014-7895-4","article-title":"Recent progress in graphene-material-based optical sensors","volume":"406","author":"Deng","year":"2014","journal-title":"Anal. Bioanal. Chem."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"3563","DOI":"10.1021\/nl5012036","article-title":"Ultrasensitive flow sensing of a single cell using graphene-based optical sensors","volume":"14","author":"Xing","year":"2014","journal-title":"Nano Lett."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1016\/j.apsusc.2017.03.178","article-title":"Adsorption of gas molecules on Ga-doped graphene and effect of applied electric field: A DFT study","volume":"411","author":"Liang","year":"2017","journal-title":"Appl. Surf. Sci."},{"key":"ref_45","first-page":"1","article-title":"Laterally extended atomically precise graphene nanoribbons with improved electrical conductivity for efficient gas sensing","volume":"8","author":"Lashkov","year":"2017","journal-title":"Nat. Commun."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1016\/j.apsusc.2019.02.244","article-title":"A DFT study of CO adsorption on the pristine, defective, In-doped and Sb-doped graphene and the effect of applied electric field","volume":"480","author":"Yang","year":"2019","journal-title":"Appl. Surf. Sci."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1764","DOI":"10.1039\/c2sc20205k","article-title":"Graphene-based electronic sensors","volume":"3","author":"He","year":"2012","journal-title":"Chem. Sci."},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Wang, Z., Yi, K., Lin, Q., Yang, L., Chen, X., Chen, H., Liu, Y., and Wei, D. (2019). Free radical sensors based on inner-cutting graphene field-effect transistors. Nat. Commun., 10.","DOI":"10.1038\/s41467-019-09573-4"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"628","DOI":"10.1016\/j.bios.2018.06.028","article-title":"High-performance bioelectronic tongue using ligand binding domain T1R1 VFT for umami taste detection","volume":"117","author":"Ahn","year":"2018","journal-title":"Biosens. Bioelectron."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1016\/j.bios.2018.03.014","article-title":"Rapid detection of single E. coli bacteria using a graphene-based field-effect transistor device","volume":"110","author":"Thakur","year":"2018","journal-title":"Biosens. Bioelectron."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"1971","DOI":"10.1016\/j.apsusc.2011.05.101","article-title":"Fabrication of a graphene field effect transistor array on microchannels for ethanol sensing","volume":"258","author":"Chen","year":"2012","journal-title":"Appl. Surf. Sci."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"82","DOI":"10.1016\/j.bios.2012.04.042","article-title":"Flexible glucose sensor using CVD-grown graphene-based field effect transistor","volume":"37","author":"Kwak","year":"2012","journal-title":"Biosens. Bioelectron."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"10078","DOI":"10.1039\/C5NR01924A","article-title":"Hydrogen gas sensor based on metal oxide nanoparticles decorated graphene transistor","volume":"7","author":"Zhang","year":"2015","journal-title":"Nanoscale"},{"key":"ref_54","first-page":"2","article-title":"Chemically Functionalised Graphene FET Biosensor for the Label-free Sensing of Exosomes","volume":"9","author":"Lieberthal","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"1084","DOI":"10.1109\/LED.2012.2193867","article-title":"Effect of Temperature and Humidity on NO2 and NH3 Gas Sensitivity of Bottom-Gate Graphene FETs Prepared by ICP-CVD","volume":"33","author":"Kim","year":"2012","journal-title":"IEEE Electron Device Lett."},{"key":"ref_56","doi-asserted-by":"crossref","unstructured":"Kai Zhang, L.Z. (2014). Volatile Organic Compounds as Novel Markers for the Detection of Bacterial Infections. Clin. Microbiol. Open Access, 3.","DOI":"10.4172\/2327-5073.1000151"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"1","DOI":"10.3389\/fnins.2020.00257","article-title":"Volatilomes of Bacterial Infections in Humans","volume":"14","author":"Elmassry","year":"2020","journal-title":"Front. Neurosci."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"016010","DOI":"10.1088\/1752-7163\/ab5559","article-title":"On-line profiling of volatile compounds produced in vitro by pathogenic oral bacteria","volume":"14","author":"Roslund","year":"2019","journal-title":"J. Breath Res."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"358","DOI":"10.1016\/j.snb.2019.01.008","article-title":"Improving the hydrogen sensing properties of SnO2 nanowire-based conductometric sensors by Pd-decoration","volume":"285","author":"Kim","year":"2019","journal-title":"Sens. Actuators B Chem."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"B1107","DOI":"10.1149\/2.0261913jes","article-title":"Economical and Efficient Electrochemical Sensing of Folic Acid using a Platinum Electrode Modified with Hydrothermally Synthesized Pd and Ag Co-Doped SnO2 Nanoparticles","volume":"166","author":"Sharma","year":"2019","journal-title":"J. Electrochem. Soc."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"616","DOI":"10.1109\/LED.2019.2901296","article-title":"Fabrication of Pd-Decorated MoSe2 nanoflowers and density functional theory simulation toward ammonia sensing","volume":"40","author":"Zhang","year":"2019","journal-title":"IEEE Electron. Device Lett."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"16838","DOI":"10.1021\/acsami.9b01638","article-title":"Pd-Catalyzed Reaction-Producing Intermediate S on a Pd\/In2O3 Surface: A Key to Achieve the Enhanced CS2 -Sensing Performances","volume":"11","author":"Liu","year":"2019","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"22039","DOI":"10.1039\/C9CP04242C","article-title":"Double-platelet Pd@ZnO microcrystals for NO2 chemical sensors: Their facile synthesis and DFT investigation","volume":"21","author":"Zhang","year":"2019","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"122069","DOI":"10.1016\/j.jhazmat.2020.122069","article-title":"Ultrathin agaric-like ZnO with Pd dopant for aniline sensor and DFT investigation","volume":"388","author":"Zhang","year":"2020","journal-title":"J. Hazard. Mater."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"9272","DOI":"10.1021\/ja504193w","article-title":"A unified picture of adsorption on transition metals through different atoms","volume":"136","author":"Montemore","year":"2014","journal-title":"J. Am. Chem. Soc."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1016\/j.physe.2018.02.022","article-title":"Evaluation of H2S sensing characteristics of metals\u2013doped graphene and metals-decorated graphene: Insights from DFT study","volume":"99","author":"Khodadadi","year":"2018","journal-title":"Phys. E Low-Dimens. Syst. Nanostruct."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1016\/j.physe.2019.01.012","article-title":"Density functional theory calculations of NO2 and H2S adsorption on the group 10 transition metal (Ni, Pd and Pt) decorated graphene","volume":"109","author":"Bo","year":"2019","journal-title":"Phys. E Low-Dimens. Syst. Nanostruct."},{"key":"ref_68","doi-asserted-by":"crossref","unstructured":"Wong, J., Yadav, S., Tam, J., and Veer Singh, C. (2014). A van der Waals density functional theory comparison of metal decorated graphene systems for hydrogen adsorption. J. Appl. Phys., 115.","DOI":"10.1063\/1.4882197"},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1002\/advs.201500101","article-title":"Experimental Sensing and Density Functional Theory Study of H2S and SOF2 Adsorption on Au-Modified Graphene","volume":"2","author":"Zhang","year":"2015","journal-title":"Adv. Sci."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"2655","DOI":"10.1002\/chem.201202972","article-title":"Halogenation of graphene with chlorine, bromine, or iodine by exfoliation in a halogen atmosphere","volume":"19","author":"Poh","year":"2013","journal-title":"Chem. A Eur. J."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"8848","DOI":"10.1039\/c2ee22238h","article-title":"Graphene based catalysts","volume":"5","author":"Huang","year":"2012","journal-title":"Energy Environ. Sci."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1103\/PhysRevB.81.205435","article-title":"Reversible fluorination of graphene: Evidence of a two-dimensional wide bandgap semiconductor","volume":"81","author":"Cheng","year":"2010","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"4315","DOI":"10.1021\/jp110067w","article-title":"DFT Study of Hydrogen Adsorption on Palladium Decorated Graphene","volume":"115","author":"Juan","year":"2011","journal-title":"J. Phys. Chem. C"},{"key":"ref_74","doi-asserted-by":"crossref","unstructured":"Walia, G.K., and Randhawa, D.K.K. (2018). Adsorption and dissociation of sulfur-based toxic gas molecules on silicene nanoribbons: A quest for high-performance gas sensors and catalysts. J. Mol. Model., 24.","DOI":"10.1007\/s00894-018-3631-x"},{"key":"ref_75","doi-asserted-by":"crossref","unstructured":"Valizadeh, P. (2016). Electronic Materials and Charge Transport. Field Effect Transistors, A Comprehensive Overview, John Wiley & Sons, Inc.","DOI":"10.1002\/9781119155850.ch1"},{"key":"ref_76","doi-asserted-by":"crossref","unstructured":"Patterson, J.D., and Bailey, B.C. (2018). Semiconductors. Solid State Physics, Springer.","DOI":"10.1007\/978-3-319-75322-5"},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"2944","DOI":"10.1063\/1.345414","article-title":"Intrinsic concentration, effective densities of states, and effective mass in silicon","volume":"67","author":"Green","year":"1990","journal-title":"J. Appl. Phys."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"035414","DOI":"10.1103\/PhysRevB.93.035414","article-title":"First-principles method for electron-phonon coupling and electron mobility: Applications to two-dimensional materials","volume":"93","author":"Gunst","year":"2016","journal-title":"Phys. Rev. B"},{"key":"ref_79","doi-asserted-by":"crossref","first-page":"165440","DOI":"10.1103\/PhysRevB.85.165440","article-title":"Unraveling the acoustic electron-phonon interaction in graphene","volume":"85","author":"Kaasbjerg","year":"2012","journal-title":"Phys. Rev. B Condens. Matter Mater. Phys."},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.nanoen.2017.10.049","article-title":"Intrinsic rectification in common-gated graphene field-effect transistors","volume":"43","author":"Haddad","year":"2018","journal-title":"Nano Energy"},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"5968","DOI":"10.3390\/s110605968","article-title":"Cytochrome C biosensor-A model for gas sensing","volume":"11","author":"Hulko","year":"2011","journal-title":"Sensors"},{"key":"ref_82","doi-asserted-by":"crossref","first-page":"366","DOI":"10.1139\/m95-049","article-title":"A biosensor based on Thiobacillus thioparus for measuring thiosulfate and methanethiol","volume":"41","author":"Kubo","year":"1995","journal-title":"Can. J. Microbiol."},{"key":"ref_83","doi-asserted-by":"crossref","first-page":"15273","DOI":"10.1021\/acs.jpcc.9b02577","article-title":"Tuning Adsorption of Methylamine and Methanethiol on Twisted-Bilayer Graphene","volume":"123","author":"Hidalgo","year":"2019","journal-title":"J. Phys. Chem. 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