Near-field Radiative Heat Transfer between Graphene Covered Biaxial Hyperbolic Materials

Wu, Xiaohu; Liu, Ruiyi

doi:10.30919/esee8c939

Cited by 26 publications

(25 citation statements)

References 57 publications

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“…These strategies have largely explored the influence of the hybridization effect of polaritons on near-field thermal radiation [20][21][22][23][24][25][26][27]. Nonetheless, up to now, the influence of the hybridization of anisotropic polaritons on the near-field radiation remains elusive.…”

Section: Introductionmentioning

confidence: 99%

Polariton topological transition effects on radiative heat transfer

Zhou

Zhang

et al. 2021

Phys. Rev. B

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Twisted two-dimensional bilayer anisotropy materials exhibit many exotic physical phenomena. Manipulating the "twist angle" between the two layers enables the hybridization phenomenon of polaritons, resulting in fine control of the dispersion engineering of the polaritons in these structures. Here, combined with the hybridization phenomenon of anisotropy polaritons, we study theoretically the near-field radiative heat transfer (NFRHT) between two twisted hyperbolic systems. These two twisted hyperbolic systems are mirror images of each other. Each twisted hyperbolic system is composed of two graphene gratings, where there is an angle ϕ between these two graphene gratings. By analyzing the photonic transmission coefficient as well as the plasmon dispersion relation of the twisted hyperbolic system, we prove the enhancement effect of the topological transitions of the surface state at a special angle [from open (hyperbolic) to closed (elliptical) contours] on radiative heat transfer. Meanwhile the role of the thickness of dielectric spacer and vacuum gap on the manipulating the topological transitions of the surface state and the NFRHT are also discussed. We predict the hysteresis effect of topological transitions at a larger vacuum gap, and demonstrate that as the thickness of the dielectric spacer increases, the transition from the enhancement effect of heat transfer caused by the twisted hyperbolic system to a suppression.

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Section: Introductionmentioning

confidence: 99%

Polariton topological transition effects on radiative heat transfer

Zhou

Zhang

et al. 2021

Phys. Rev. B

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“…GO is a form of graphene having various oxygen-containing functional groups, induces stable dispersion in many polar and nonpolar substances, including water, and is thus widely used in many industrial applications for benefits different from those of native graphene. − Because of the presence of oxygen-containing functional groups, graphene oxide has good thermal, electrical, and mechanical properties − due to its 2D sp 2 carbon honeycomb structure. It is well reported in the literature that the functional groups can be removed to obtain stable graphene, which is called reduced graphene oxide (often abbreviated to rGO). , Few studies have documented the composite of a graphene oxide hybrid that can be used as a bifunctional catalyst for hydrogen evolution and hydrogen storage, asymmetric supercapacitors, , electrochemical supercapacitors, self-healing polymer composites, as anode material for lithium-ion batteries, EMI shielding, − and in graphene and graphene oxide-based membranes for gas separation. , Also, graphene nanofillers were synthesized and incorporated into starch to improve its mechanical properties and long-term stability . The present report demonstrates SF as a biomaterial that can be used to reduce GO to rGO and fabricate the SF–rGO bionanocomposite.…”

Section: Introductionmentioning

confidence: 99%

Conductive In Situ Reduced Graphene Oxide–Silk Fibroin Bionanocomposites

et al. 2021

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This research paper describes the fabrication of bionanocomposites (BNCs) based on silk fibroin (SF) and reduced graphene oxide (rGO). The recorded UV–visible (UV–vis) spectra of the sample confirm the reduction of GO to rGO in SF by showing a plasmon resonance band within the wavelength range of 261–268 nm. The X-ray diffraction (XRD) peak at 11.6° corresponding to the GO intensity decreases with increasing reaction time, resulting in rGO in the SF host matrix. The morphological behavior of the SF–rGO BNCs is scrutinized using scanning electron microscopy (SEM), and the images clearly indicate the existence of rGO within the matrix. The increasing amount of GO in the SF shows broken graphene sheets, which can increase the surface roughness and establish a strong physical contact between the SF and rGO nanosheets. The high-resolution transmission electron microscope (HR-TEM) image of the bionanocomposite showed that the formed rGO encompassments of fewer layers are stacked, each with fewer wrinkles and folding. The Raman spectroscopy confirmed the formation of rGO by showing the increased intensity ratio of D to G band (I D/I G) in the bionanocomposite samples. The rGO effect on the electrical conductivity is measured, and the results show that DC conductivity increases from 1.28 × 10–9 to 82.4 × 10–9 S/cm with an increase in the GO content in the SF biopolymer. The investigations demonstrate loss of the insulation property and improved conducting behavior of the SF biopolymer.

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“… 7–9 The graphene plasmons could couple with other plasmons and phonon polaritons, leading to a further mediation of near-field radiative heat transfer. 10 Moreover, graphene is expected to become an ideal membrane material to separate gases, liquids and ions in terms of the selectivity and permeability, which could outperform the established polymer membranes. 11 , 12 …”

Section: Introductionmentioning

confidence: 99%

Advances on Graphene-Based Nanomaterials and Mesenchymal Stem Cell-Derived Exosomes Applied in Cutaneous Wound Healing

Zhao

Shi

Cai

et al. 2021

IJN

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Graphene is a new type of carbon nanomaterial discovered after fullerene and carbon nanotube. Due to the excellent biological properties such as biocompatibility, cell proliferation stimulating, and antibacterial properties, graphene and its derivatives have become emerging candidates for the development of novel cutaneous wound dressings and composite scaffolds. On the other hand, pre-clinical research on exosomes derived from mesenchymal stem cells (MSC-Exos) has been intensified for cell-free treatment in wound healing and cutaneous regeneration, via ameliorating the damaged microenvironment of the wound site. Here, we provide a comprehensive understanding of the latest studies and observations on the various effects of graphene-based nanomaterials (GBNs) and MSC-Exos during the cutaneous wound repair process, as well as the putative mechanisms thereof. In addition, we propose the possible forward directions of GBNs and MSC-Exos applications, expecting to promote the clinical transformation.

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Near-field Radiative Heat Transfer between Graphene Covered Biaxial Hyperbolic Materials

Cited by 26 publications

References 57 publications

Polariton topological transition effects on radiative heat transfer

Polariton topological transition effects on radiative heat transfer

Conductive In Situ Reduced Graphene Oxide–Silk Fibroin Bionanocomposites

Advances on Graphene-Based Nanomaterials and Mesenchymal Stem Cell-Derived Exosomes Applied in Cutaneous Wound Healing

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