Search results for "gold nanostructures"

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Growth of two-dimensional Au patches in graphene pores: A density-functional study

2017

Inspired by recent studies of various two-dimensional (2D) metals such as Au, Fe and Ag, we study the growth of two-dimensional gold patches in graphene pores by density-functional theory. We find that at room temperature gold atoms diffuse readily on top of both graphene and two-dimensional gold with energy barriers less than $0.5$ eV. Furthermore, gold atoms move without barriers from the top of graphene to its edge and from the top of 2D gold to its edge. The energy barriers are absent even at the interface of 2D gold and graphene, so that the gold atoms move effortlessly across the interface. We hope our demonstration for the propensity of diffusing gold atoms to grow 2D gold patches in…

FabricationMaterials scienceGeneral Computer ScienceFOS: Physical sciencesGeneral Physics and AstronomyNanotechnology02 engineering and technology01 natural scienceslaw.inventiontwo-dimensional metalsgraphene poresgold nanostructureslawMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesGeneral Materials Science010306 general physicsCondensed Matter - Materials Scienceta114Condensed Matter - Mesoscale and Nanoscale PhysicsGrapheneMaterials Science (cond-mat.mtrl-sci)General Chemistry021001 nanoscience & nanotechnologyComputational MathematicsMechanics of MaterialsDensity functional theory0210 nano-technologydensity-functional modelingGraphene nanoribbonsComputational Materials Science
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Near-Infrared-Responsive Choline-Calix[4]arene-Gold Nanostructures for Potential Photothermal Cancer Treatment

2022

The development of novel chemical approaches for the fabrication of gold nanostructures with localized surface plasmon resonance (LSPR) falling in the near-infrared (NIR) region is one challenging topic in nanomaterials science. Due to their optical and photothermal properties triggered by light excitation in the therapeutic window (λmax = 650-1300 nm), gold-based nanostructures are appealing candidates in anticancer nanomedicine. Here, we report a novel method to prepare water-dispersible gold nanostructures with NIR-LSPR (λmax = 600-1000 nm) properties. The gold nanostructures were achieved in a single step by an unconventional method using NADH as a reducing agent and an amphiphilic chol…

gold nanostructuresphotothermal therapymolecular modelingSettore FIS/01 - Fisica SperimentalecalixareneGeneral Materials Sciencephotothermal effectcancer treatment
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