Relevant bibliographies by topics / Carbonaceous nanomaterial graphene

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Carbonaceous nanomaterial graphene'

Author: Grafiati
Published: 18 May 2024

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Journal articles on the topic "Carbonaceous nanomaterial graphene"

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Sajit, Rathin, B. Harinesh, M. P. Jenarthanan, M. Ramachandran, and Prasanth Vidhya. "Thermal Characterization of Graphene Based Composites." 1 8, no. 1 (January 31, 2022): 10–15. http://dx.doi.org/10.46632/jemm/8/1/2.

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Graphene, an atomic thin two-dimensional carbonaceous nanomaterial, has exceptional electrical, mechanical and chemical properties. There is also great research interest in the development of two technologies. Since the discovery of graphene, this reliable Wide range of material applications Integrated,and many attempts have been made To modify the structure of graphene. Particular attention is paid. Graphene Derivatives Graphene Oxide Hole Graphene / Graphene oxide, recent Developments development of reduced Graphene oxide and graphene quantum points. In this chapter, the inherent properties of the definition and the different approaches to top-down and basically graphene derivatives are discussed below. This includes the formation of derivatives of graphene by chemical oxidation. In addition, the bit and peel-out mechanism for creating graphene derivatives, which leads For a better understanding of Physics of graphene derivatives And chemical properties.
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Machado, Aline Belem, Paula Schmitt, Thuany Garcia Maraschin, Daniela Montanari Migliavacca Osorio, Nara Regina de Souza Basso, and Daiane Bolzan Berlese. "Adsorption capacity of pollutants from water by graphene and graphene-based materials: a bibliographic review." CONTRIBUCIONES A LAS CIENCIAS SOCIALES 17, no. 2 (February 22, 2024): e4707. http://dx.doi.org/10.55905/revconv.17n.2-285.

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The increase in the contamination of water systems by endocrine disruptive chemicals is of great concern once they pose risk to human and animal lives. The need for materials to adsorb these pollutants are of great concern. Graphene, a newly discovered material from the carbonaceous group, has been demonstrating interesting applications in contaminants removal from water. Therefore, this study aimed to review manuscripts regarding the adsorption capacity of herbicides and pesticides, bisphenol A, and carbamazepine from water using graphene or graphene-based materials as an adsorbent. Research of manuscripts was performed in Science Direct, Wiley Online Library, and Periódicos Capes database regarding the application of this nanomaterial in the removal of these pollutants from water. This review demonstrated that graphene itself or hybrid with other materials is very efficient in removing these contaminants, with high-efficiency rates. However, new studies can be performed to improve graphene applications and effectiveness.
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Hawi, Sara, Somayeh Gharavian, Marek Burda, Saurav Goel, Saeid Lotfian, Tasnuva Khaleque, and Hamed Yazdani Nezhad. "Development of carbonaceous tin-based solder composite achieving unprecedented joint performance." Emergent Materials 4, no. 6 (December 2021): 1679–96. http://dx.doi.org/10.1007/s42247-021-00337-9.

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AbstractWeight reduction and improved strength are two common engineering goals in the joining sector to benefit transport, aerospace, and nuclear industries amongst others. Here, in this paper, we show that the suitable addition of carbon nanomaterials to a tin-based solder material matrix (C-Solder® supplied by Cametics Ltd.) results in two-fold strength of soldered composite joints. Single-lap shear joint experiments were conducted on soldered aluminium alloy (6082 T6) substrates. The soldering material was reinforced in different mix ratios by carbon black, graphene, and single-walled carbon nanotubes (SWCNT) and benchmarked against the pristine C-solder®. The material characterisation was performed using Vickers micro-indentation, differential scanning calorimetry and nano-indentation, whereas functional testing involved mechanical shear tests using single-lap aluminium soldered joints and creep tests. The hardness was observed to improve in all cases except for the 0.01 wt.% graphene reinforced solders, with 5% and 4% improvements in 0.05 carbon black and SWCNT reinforced solders, respectively. The maximum creep indentation was noted to improve for all solder categories with maximum 11% and 8% improvements in 0.05 wt.% carbon black and SWCNT reinforced ones. In general, the 0.05 wt.% nanomaterial reinforced solders promoted progressive cohesion failure in the joints as opposed to instantaneous fully de-bonded failure observed in pristine soldered joints, which suggests potential application in high-performance structures where no service load induced adhesion failure is permissible (e.g. aerospace assemblies). The novel innovation developed here will pave the way to achieving high-performance solder joining without carrying out extensive surface preparations.
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Tran, Hai Nguyen. "Adsorption Technology for Water and Wastewater Treatments." Water 15, no. 15 (August 7, 2023): 2857. http://dx.doi.org/10.3390/w15152857.

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This Special Issue includes 12 research papers on the development of various materials for adsorbing different contaminants in water, such as Sb, Cr(VI), Cu(II), Zn(II), fluorine, phenol, dyes (indigo carmine, Congo red, methylene blue, and crystal violet), and drugs (dlevofloxacin, captopril, and diclofenac, and paracetamol). The commercial, natural, and synthetic materials used as adsorbents comprise commercial activated carbon, natural clay and montmorillonite, biosorbent based on sugarcane bagasse or algal, graphene oxide, graphene oxide-based magnetic nanomaterial, mesoporous Zr-G-C3N4 nanomaterial, nitrogen-doped core–shell mesoporous carbonaceous nano-sphere, magnetic Fe-C-N composite, polyaniline-immobilized ZnO nanorod, and hydroxy-iron/acid–base-modified sepiolite composite. Various operational conditions are evaluated under batch adsorption experiments, such as pH, NaCl, solid/liquid ratio, stirring speed, contact time, solution temperature, initial adsorbate concentration. The re-usability of laden materials is evaluated through adsorption–desorption cycles. Adsorption kinetics, isotherm, thermodynamics, and mechanisms are studied and discussed. Machine learning processes and statistical physics models are also applied in the field of adsorption science and technology.
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Goncharuk, V. V., I. V. Dubrovin, L. V. Dubrovina, D. D. Kucheruk, O. V. Naboka, and V. M. Ogenko. "Carbon-Silica Composites with Cellulose Acetate, Polyisocyanate and Copper Chloride." Фізика і хімія твердого тіла 17, no. 3 (September 15, 2016): 407–11. http://dx.doi.org/10.15330/pcss.17.3.407-411.

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Cellulose acetate and polyisocyanate copolymer synthesized by simultaneous mixing of cellulose acetate and polyisocyanate with acetone solution of Copper chloride and fumed silicon dioxide was carbonized in a silicon dioxide template. The composite structure and composition was studied with SEM, EDS and XRD. It was shown that the porous carbonaceous nanomaterial was synthesized where formed carbon was represented by coating on silicon dioxide and consisted of graphite, graphene and amorphous nonstructured carbon. Crystals of metallic copper with the size up to few µm were formed from Copper chloride after reduction of Cu2+ with products of organic compounds pyrolisis.
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Rivera-Lugo, Yazmín Yorely, Kevin Isaac Pérez-Muñoz, Balter Trujillo-Navarrete, Carolina Silva-Carrillo, Edgar Alonso Reynoso-Soto, Julio Cesar Calva Yañez, Shui Wai Lin, José Roberto Flores-Hernández, and Rosa María Félix-Navarro. "PtPd Hybrid Composite Catalysts as Cathodes for Proton Exchange Membrane Fuel Cells." Energies 13, no. 2 (January 9, 2020): 316. http://dx.doi.org/10.3390/en13020316.

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In this work, PtPd hybrid cathodic catalysts were prepared for a proton exchange membrane fuel cell (PEMFC) application by two different strategies. The first strategy was the physical mixing of bimetallic PtPd onto partially reduced graphene oxide (PtPd/rGO) and PtPd onto multi-walled carbon nanotubes (PtPd/MWCNT); (PtPd/rGO) + (PtPd/MWCNT). The second strategy was physical mixing of both carbonaceous supports before the PtPd deposition to form PtPd/(rGO:MWCNT). Our experimental results revealed that the PtPd nanomaterial prepared over a mixture of both carbonaceous supports had better oxygen reduction reaction (ORR) and PEMFC performances than the individually prepared catalysts. The insertion of MWCNT between rGO sheets prevented their stacking. This promoted the diffusion of oxygen molecules through the interlayer spacing, enhancing the ORR’s electrocatalytic activity. The durability test demonstrated that the hybrid supporting material dramatically improved the catalyst’s stability even after 3000 reaction cycles. This highlighted an increase greater than 100% for hybrid nanocomposites in their electrocatalytic activity as compared with the PtPd/rGO nanocomposite.
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Alfe, M., V. Gargiulo, and R. Di Capua. "An Old but Lively Nanomaterial: Exploiting Carbon Black for the Synthesis of Advanced Materials." Eurasian Chemico-Technological Journal 21, no. 3 (September 30, 2019): 203. http://dx.doi.org/10.18321/ectj861.

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Carbon black (CB) is an old-concept but versatile carbonaceous material prone to be structurally and chemically modified under quite mild wet conditions. Recently, we exploited the potentiality of CB for the production of a highly varied array of advanced materials with applications in energetics, water remediation and sensoristic. The proposed approaches are devised to meet specific needs: low production costs, scalable synthetic approaches, flexibility i.e. easy tuning of chemico-physical properties of the carbon-based advanced materials. Two main approaches have been exploited: modification of CB at the surface and highly CB de-structuration. The former approach allows obtaining highly homogenous CB-modified nanoparticles (around 160 nm) with tunable surface properties (hydrophilicity, typology of functional groups and surface charge density, pore size distribution), supports for ionic liquid (SILP) and composites (carbon-iron oxide). The latter approach exploiting a top-down demolition of CB produces a highly versatile graphene related material (GRM), made up by stacked short graphene-like layers (GL) particularly suitable for advanced composites synthesis and ultrathin carbon-based films production.
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Wang, Ying, Zoe S. Welch, Aaron R. Ramirez, Dermont C. Bouchard, Joshua P. Schimel, Jorge L. Gardea-Torresdey, and Patricia A. Holden. "Effects of carbonaceous nanomaterials on soil-grown soybeans under combined heat and insect stresses." Environmental Chemistry 16, no. 6 (2019): 482. http://dx.doi.org/10.1071/en19047.

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Environmental contextEngineered nanomaterials have the potential to accumulate in agricultural soils where they may influence crop plants. There is, however, little information about how adverse environmental conditions may interact with nanomaterial effects on plants and plant-microbe interactions. We report the comparative effects of three carbonaceous nanomaterials on the growth, nodulation and foliar health of a globally important legume crop, soybean, under the combined stresses of high temperature and insect pests. AbstractBecause carbonaceous nanomaterials (CNMs) are expected to enter soils, the exposure implications to crop plants and plant–microbe interactions should be understood. Most investigations have been under ideal growth conditions, yet crops commonly experience abiotic and biotic stresses. Little is known how co-exposure to these environmental stresses and CNMs would cause combined effects on plants. We investigated the effects of 1000mgkg−1 multiwalled carbon nanotubes (CNTs), graphene nanoplatelets (GNPs) and industrial carbon black (CB) on soybeans grown to the bean production stage in soil. Following seed sowing, plants became stressed by heat and infested with an insect (thrips). Consequently, all plants had similarly stunted growth, leaf damage, reduced final biomasses and fewer root nodules compared with healthy control soybeans previously grown without heat and thrips stresses. Thus, CNMs did not significantly influence the growth and yield of stressed soybeans, and the previously reported nodulation inhibition by CNMs was not specifically observed here. However, CNMs did significantly alter two leaf health indicators: the leaf chlorophyll a/b ratio, which was higher in the GNP treatment than in either the control (by 15%) or CB treatment (by 14%), and leaf lipid peroxidation, which was elevated in the CNT treatment compared with either the control (by 47%) or GNP treatment (by 66%). Overall, these results show that, while severe environmental stresses may impair plant production, CNMs (including CNTs and GNPs) in soil could additionally affect foliar health of an agriculturally important legume.
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Kwon, Hyuntak, Yongju Park, Euntae Yang, and Tae-Hyun Bae. "Graphene Oxide-Based Membranes Intercalated with an Aromatic Crosslinker for Low-Pressure Nanofiltration." Membranes 12, no. 10 (October 2, 2022): 966. http://dx.doi.org/10.3390/membranes12100966.

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Graphene oxide (GO), a carbonaceous 2D nanomaterial, has received significant interest as a next-generation membrane building block. To fabricate high-performance membranes, an effective strategy involves stacking GO nanosheets in laminated structures, thereby creating unique nanochannel galleries. One outstanding merit of laminar GO membranes is that their permselectivity is readily tunable by tailoring the size of the nanochannels. Here, a high-performance GO-based nanofiltration membrane was developed by intercalating an aromatic crosslinker, α,α/-dichloro-p-xylene (DCX), between the layers in laminated GO nanosheets. Owing to the formation of strong covalent bonds between the crosslinker and the GO, the resulting GO laminate membrane exhibited outstanding structural stability. Furthermore, due to the precisely controlled and enlarged interlayer spacing distance of the developed DCX-intercalated GO membrane, it achieved an over two-fold enhancement in water permeability (11 ± 2 LMH bar−1) without sacrificing the rejection performance for divalent ions, contrary to the case with a pristine GO membrane.
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Reinholds, I., I. Pugajeva, E. Bogdanova, J. Jaunbergs, and V. Bartkevics. "Recent applications of carbonaceous nanosorbents for the analysis of mycotoxins in food by liquid chromatography: a short review." World Mycotoxin Journal 12, no. 1 (February 11, 2019): 31–43. http://dx.doi.org/10.3920/wmj2018.2339.

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Carbonaceous nanomaterials (multi-walled carbon nanotubes (MWCNTs), graphene, and graphene oxide (GO)) have attracted attention over the last decade as adsorbents suitable for the analysis of organic and inorganic pollutants. In the present paper we review methods of mycotoxin analysis that involve sample extraction with carbonaceous nanosorbents, reported from 2011 onwards. Recent studies have highlighted the advantages of magnetically modified MWCNTs and GO in mycotoxin analysis, which may enable sample isolation through magnetic separation, reduce the interaction of nanoparticles, and enhance the recovery of analytes. The papers covered in this review point to promising applications of functionalised carbonaceous nanosorbents in mycotoxin analysis. While GO based sorbents can be effective for the adsorption of relatively polar aflatoxins, MWCNTs with high specific surface area and reduced agglomeration achieved through modification with silica and magnetic particles are preferred for the extraction of less polar mycotoxins.
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Dissertations / Theses on the topic "Carbonaceous nanomaterial graphene"

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Basak, Puja. "Organic transformations using novel catalytic system." Thesis, University of North Bengal, 2022. http://ir.nbu.ac.in/handle/123456789/4790.

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Choudhury, Prasun. "Carbonaceous nanomaterials and composites green techniques for organic synthesis." Thesis, University of North Bengal, 2020. http://ir.nbu.ac.in/handle/123456789/4336.

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Book chapters on the topic "Carbonaceous nanomaterial graphene"

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Hamza, M. "Recent Advances in Enzyme Immobilization in Nanomaterials." In Nanomaterial-Supported Enzymes, 1–66. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901977-1.

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This chapter described the advancements in the development of nanostructured supported material and enzyme immobilization techniques. The functionalized nanomaterials extremely affect the inherent mechanical properties and provide the highest biocompatibility and specific nano-environment surrounding the enzymes for improving enzymes stability, catalytic performance, and reaction’s activities. The enzyme immobilization on nanomaterials considerably enhances the robustness and durability of the enzyme for its frequent applications, which reduces the overall expenses of the bio-catalytic process. There are various types of nanomaterials i.e. metal nanoparticles, metal oxide, carbonaceous materials (carbon nanotubes, graphene, and activated carbon), that have been used for the immobilization of the enzyme. So that durability, catalytic activity, leaching of the enzyme, and mechanical steadiness are evaluated for their continual operation.
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Thakur, Vaishali, and Ekta Sharma. "Application of Carbonaceous Quantum dots in Energy Storage." In Carbonaceous Quantum Dots: Synthesis And Applications, 178–91. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136265123010012.

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Carbon quantum dots (CQDs) are a type of carbon nanomaterial that has lately received attention as a potential replacement for standard semiconductor quantum dots (QDs). CQDs feature a quasi-spherical structure and amorphous to nanocrystalline carbon cores with diameters of 10-20 nm. Based on the carbon core, CQDs are further classified as graphene quantum dots (GQDs), carbon nanodots (CNDs), and polymer dots (PDs). CQDs exhibit unique electrical and optical properties due to their bigger edge effects and quantum confinement; better than graphene oxide nanosheets, they can also be easily split into electrons and holes due to their high dielectric constant and extinction coefficient. CQDs are crucial in the sector of energy storage and transformation because CQDs offer the advantageous properties of low toxicity, environmental friendliness, low cost, photostability, favourable charge transfer with increased electronic conductivity, and comparably simple synthesis processes. Due to their superior crystal structure and surface properties, CQD nanocomposites often helped to shorten charge transfer paths and maintain electrode material cycle stability. CQDs provide cost-effective and environmentally friendly nanocomposites used for supplying high energy density and stable electrodes for energy storage applications. This chapter provides a summary of the role that CQDs play in energy transmit technologies, including solar cells, supercapacitors, lithium-ion batteries, and hydrogen and oxygen evolution reactions.
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Gürünlü, Betül, and Mahmut Bayramoğlu. "Investigation of Alternative Techniques for Graphene Synthesis." In Novel Nanomaterials [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94153.

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In recent years, a great deal of concentration has addressed the electronic and morphological characteristics of carbonaceous substances. Nowadays, particularly, graphene is one of the most popular materials in condensed-matter physics and materials science. It is used in different fields such as desalination of seawater, smartphones, computers, satellites, planes, cars, building materials, obtaining protective coatings and rust-free cars, nuclear clean up, transistors, sensors, electron microscopy, Li ion batteries, super capacitors, and bionics. Mechanical cleaving (exfoliation), chemical exfoliation, chemical synthesis, and thermal chemical vapor deposition (CVD) synthesis are the most commonly used methods today. Some other techniques are also reported such as unzipping nanotube and microwave synthesis. In graphene synthesis, starting material is usually graphite. On the other hand, different starting materials such as rice husks, fenugreek seeds, hibiscus flower petals, camphor, alfalfa plants, petroleum asphalt are used as a carbon source for graphene synthesis. In this study, alternative methods for graphene synthesis specially microwave irradiation and ultrasound energy were studied, and the performances of the final products were compared with the help of different characterization techniques. Advantages and drawbacks of these methods were clearly discussed for enhancing the understanding of the graphene synthesis phenomena.
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Mejri, Alma, Abdelmoneim Mars, and Hamza Elfil. "Carbonaceous Quantum Dots as Efficient Zero-dimensional Nanomaterials for Sensing Applications." In Carbonaceous Quantum Dots: Synthesis And Applications, 110–43. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136265123010010.

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Carbonaceous quantum dots (QDs), including carbon and graphene quantum dots, have been widely used recently in various sensing fields, such as healthcare sensing, environmental monitoring, and food safety. Owing to their exceptional electronic, fluorescent, photoluminescent, chemiluminescent, and electrochemiluminescent properties, carbonaceous QDs are essential tools for designing an ultra-sensitive sensing platform. In this chapter, we summarized the applications of carbonaceous QDs in the detection of various target analysts, citing heavy metals, toxic compounds, pesticides, and proteins (DNA, aptamer, and RNA). In this regard, the authors described the effects of synthetic methods and surface functionalization on the properties of carbonaceous QDs and the analytical performance of sensors. We believe that understanding these parameters gives us better sensors that could not be obtained by other means. To give the reader a clear vision of the implementation of these zero.dimensional nanomaterials in sensor architectures, a comparative study has been developed.
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Kant, Arun, Gyanendra Kumar, Mohd Ehtesham, Sudipta Ghosh, M. Ramananda Singh, and Panmei Gaijon. "Application of Carbon-Based Nanocomposite Materials for Wastewater Treatment." In Innovative Nanocomposites for the Remediation and Decontamination of Wastewater, 256–78. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-4553-2.ch014.

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Water is a vital component of life. It is naturally available as earth hydrosphere and plays an important role in the world economy, and it essential for balancing of the ecosystem. Numerous microbes and other toxins such as chemicals and heavy metals are integrated into rainwater and flowing water, resulting in water pollution. This chapter examines the numerous ways in which nanomaterials can be used to remove various kinds of contaminants from polluted water. In this chapter, carbon-based adsorbents material, that is, carbonaceous materials, has described. Carbonaceous materials such as stimulated carbon, carbon nanotubes, and graphene oxide have good performance and high adsorption value for medicinal active chemicals. In present-day investigations, researchers have found that carbon-based nanomaterials have been located progressively being applied in recycling of wastewater treatment research with overwhelmingly positive results.
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Jangbarwala, Juzer. "Review of Carbonaceous Nanomaterials and Graphite." In Graphitic Nanofibers, 13–40. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-323-51104-9.00002-9.

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Mousavi, Seyyed Mojtaba, Khadije Yousefi, Seyyed Alireza Hashemi, and Sonia Bahrani. "Hybrid Magnetic nanoparticles–Carbonaceous nanomaterials (carbon nanotube/graphene)." In Magnetic Nanoparticle-Based Hybrid Materials, 121–38. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-823688-8.00024-7.

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Ekwere, Precious, Miranda Ndipingwi, Chinwe Ikpo, Kaylin Januarie, Kefilwe Mokwebo, Marlon Oranzie, Kelechi Nwambaekwe, Onyinyechi Uhuo, and Emmanuel Iwuoha. "Precious metal–carbon framework materials for supercapacitors." In Nanoscience, 35–77. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/9781839169427-00035.

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Precious metals (PM) have received considerable attention recently due to their corrosion resistance, electrical conductivity, variable oxidation states, and impressive theorized capacitance. However, they are scarce and expensive, and have low cyclic stability, thus limiting their industrial applications. This article discusses extensively the fabrication of ruthenium oxides in their nano form with different carbon nanomaterials. The carbon materials covered are graphene, carbon nanotubes, carbon dots, carbon onions, activated carbon, carbon black and carbon fiber. Additionally, ruthenium nitrates and sulfites, as well as other precious metals such as gold nanoparticles, iridium oxide nanoparticles, palladium/palladium oxide nanoparticles, platinum nanoparticles/wires, silver nanoparticles/nanowires, and their carbonaceous composites are discussed. The shortcomings of pristine carbon material supercapacitors, and the use of PM to achieve high power density in composite PM–carbon material supercapacitors, are also evaluated.
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Conference papers on the topic "Carbonaceous nanomaterial graphene"

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KAYNAN, OZGE, LISA PEREZ, and AMIR ASADI. "INTERFACIAL PROPERTIES OF HYBRID CELLULOSE NANOCRYSTAL/CARBONACEOUS NANOMATERIAL COMPOSITES." In Thirty-sixth Technical Conference. Destech Publications, Inc., 2021. http://dx.doi.org/10.12783/asc36/35922.

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Cellulose nanocrystal (CNCs) assisted carbon nanotubes (CNTs) and graphene nanoplatelets (GnP) were used to modify the interfacial region of carbon fiber (CF) and polymer matrix to strengthen the properties of carbon fiber-reinforced polymer (CFRP). Before transferring CNC-CNTs and CNC-GnPs on the CF surface by an immersion coating method, the nanomaterials were dispersed in DI water homogeneously by using probe sonication technique without additives. The results showed that the addition of CNC-CNT and CNC-GnP adjusted the interfacial chemistry of CFRP with the formation of polar groups. Furthermore, according to the single fiber fragmentation test (SFFT), the interfacial shear strength (IFSS) of CNC-GnP 6:1 and CNC-CNT 10:1 added CFRP increased to 55 MPa and 64 MPa due to modified interfacial chemistry by the incorporation of the nanomaterials. This processing technique also resulted in improvement in interlaminar shear strength (ILSS) in CFRPs from 35 MPa (neat composite) to 45 (CNC-GnP 6:1) MPa and 52 MPa (CNC-CNT 10:1).
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Singh, Prashant, Seul-Yi Lee, and Roop L. Mahajan. "An Experimental Investigation of the Contribution of Different Carbonaceous Nanomaterials to Thermal Conductance of Thermal Interface Materials." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11553.

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Abstract With the increasing demand for higher performance and progressive miniaturization of electronic packages, power densities and the attendant thermal dissipation requirements are expected to escalate. One of the important strategies to ensure reliable operation at the device and die (chip) levels is the use of Thermal Interface Materials (TIMs) to reduce the thermal resistance between the chip and the heat sink. In this study, we have carried out an experimental investigation to characterize thermal conductance of TIMs composed of commercially available graphene (c-rGO), graphene nanoplatlets (GNPs) of different lateral sizes (5, 15 and 25 μm), and our in-house produced thermally reduced graphene oxide at 600°C (T-rGO-600). These additives were loaded in a silicone rubber matrix where their loading fraction was fixed at 2% by weight. Thermal conductance of the resulting TIMs was determined by measuring heat flow, in steady state, through a TIM sandwiched between two metal blocks. The thermal conductance values representing the combined resistance of the composite material and the contact resistances between the TIM and the metal blocks were measured at different heat flux levels across the TIM. The results show that the thermal conductance values were independent of the heat load across the TIM as well as the TIM temperature. Further, a detailed investigation of the surface functionality and structural properties has revealed that the in-house produced T-rGO-600 has superior thermal conductance when compared to the above-mentioned carbonaceous nanomaterials, which are considered as potential candidates for enhancing thermal performance of TIMs. The data demonstrates that this result is attributable to the formation of the surface functional groups and the associated morphological changes during the reduction of graphene oxide to the T-rGO-600. Among the different GNPs tested, the GNP-15 exhibited superior thermal performance compared to the GNP-5 and GNP-25 samples.
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