Gold nanoparticle decorated vertical graphene nanosheets composite/hybrid for acetone sensing at room temperature

Mangamma, G.; Muthukumaravel, Chitra; Karunakaran, Uthayarani; Sairam, T.N.

doi:10.1016/j.mseb.2022.116211

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…The composite strength is increased when tension is applied along the graphene plane, but this strength is much lower when tension is applied normally to the graphene layer. In recent years, the following new morphology became much more popular—a graphene network filled with metal [ 47 , 50 , 51 , 52 ]. It is much easier to fabricate, since metal nanoparticles can be a catalyst, and such structures have much higher strength due to the high strength of the graphene network itself.…”

Section: Introductionmentioning

confidence: 99%

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

2023

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In the present work, the thermal conductivity and thermal expansion coefficients of a new morphology of Ni/graphene composites are studied by molecular dynamics. The matrix of the considered composite is crumpled graphene, which is composed of crumpled graphene flakes of 2–4 nm size connected by van der Waals force. Pores of the crumpled graphene matrix were filled with small Ni nanoparticles. Three composite structures with different sizes of Ni nanoparticles (or different Ni content—8, 16, and 24 at.% Ni) were considered. The thermal conductivity of Ni/graphene composite was associated with the formation of a crumpled graphene structure (with a high density of wrinkles) during the composite fabrication and with the formation of a contact boundary between the Ni and graphene network. It was found that, the greater the Ni content in the composite, the higher the thermal conductivity. For example, at 300 K, λ = 40 W/(mK) for 8 at.% Ni, λ = 50 W/(mK) for 16 at.% Ni, and λ = 60 W/(mK) for 24 at.% Ni. However, it was shown that thermal conductivity slightly depends on the temperature in a range between 100 and 600 K. The increase in the thermal expansion coefficient from 5 × 10−6 K−1, with an increase in the Ni content, to 8 × 10−6 K−1 is explained by the fact that pure Ni has high thermal conductivity. The results obtained on thermal properties combined with the high mechanical properties of Ni/graphene composites allow us to predict its application for the fabrication of new flexible electronics, supercapacitors, and Li-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

2023

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2D-network of boron-functionalized N-doped graphene quantum dots for electrochemical sensing of dopamine

Lima,

Mikhraliieva,

Vanoni

et al. 2024

Diamond and Related Materials

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The Role of Nano-Sensors in Breath Analysis for Early and Non-Invasive Disease Diagnosis

Lagopati,

Valamvanos,

Proutsou

et al. 2023

Chemosensors

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Early-stage, precise disease diagnosis and treatment has been a crucial topic of scientific discussion since time immemorial. When these factors are combined with experience and scientific knowledge, they can benefit not only the patient, but also, by extension, the entire health system. The development of rapidly growing novel technologies allows for accurate diagnosis and treatment of disease. Nanomedicine can contribute to exhaled breath analysis (EBA) for disease diagnosis, providing nanomaterials and improving sensing performance and detection sensitivity. Through EBA, gas-based nano-sensors might be applied for the detection of various essential diseases, since some of their metabolic products are detectable and measurable in the exhaled breath. The design and development of innovative nanomaterial-based sensor devices for the detection of specific biomarkers in breath samples has emerged as a promising research field for the non-invasive accurate diagnosis of several diseases. EBA would be an inexpensive and widely available commercial tool that could also be used as a disease self-test kit. Thus, it could guide patients to the proper specialty, bypassing those expensive tests, resulting, hence, in earlier diagnosis, treatment, and thus a better quality of life. In this review, some of the most prevalent types of sensors used in breath-sample analysis are presented in parallel with the common diseases that might be diagnosed through EBA, highlighting the impact of incorporating new technological achievements in the clinical routine.

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Gold nanoparticle decorated vertical graphene nanosheets composite/hybrid for acetone sensing at room temperature

Cited by 3 publications

References 39 publications

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

2D-network of boron-functionalized N-doped graphene quantum dots for electrochemical sensing of dopamine

The Role of Nano-Sensors in Breath Analysis for Early and Non-Invasive Disease Diagnosis

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