Thermal Stability of Gold Nanorods for High-Temperature Plasmonic Sensing

Joy, Nicholas; Janiszewski, Brian K.; Novak, Steven W.; Johnson, Timothy W.; Oh, Sang Hyun; Raghunathan, Ananthan; Hartley, John G.; Carpenter, Michael A.

doi:10.1021/jp400607s

Cited by 52 publications

(54 citation statements)

References 40 publications

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“…The plasmonic properties of gold nanorods allow them to be used in photothermal therapy [1,2], imaging techniques [3,4], theranostics [5,6], sensing applications [7][8][9][10] and optical memories [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…in photothermal therapy [1,2] and photoacoustic imaging [36][37][38]. It was shown that embedding the nanorods into a titaniumoxide matrix [39], or coating with carbon [40] or other materials [7,25] can protect them from shape transformations during heating up to ~690 °C. For silica shells, however, the temperature related shape change of the core/shell nanoparticles upon bulk heating was investigated only up to 260 °C and for aspect ratios higher than 4 [41,42].…”

Section: Introductionmentioning

confidence: 99%

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Thermal stability of mesoporous silica-coated gold nanorods with different aspect ratios

Gergely-Fülöp

Zámbó

Deák

2014

Materials Chemistry and Physics

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The effect of different temperatures (up to 900 °C) on the morphology of mesoporous silicacoated gold nanorods was systematically investigated. Gold nanorods with different aspect ratios (AR ranging from 2.5 to 4.3) were coated with a 15 nm thick mesoporous silica shell.Silicon supported monolayers of the particles were annealed in the temperature range of 300-900 °C. The resulting changes in particle morphology were investigated using scanning electron microscopy and visible wavelength extinction spectroscopy. The silica coating generally improved the stability of the nanorods from ca. 250 °C by several hundreds degree Celsius. For nanorods with AR<3 the shape and the aspect ratio change is only moderate up to 700 °C. At 900 °C these nanorods became spherical. For nanorods with AR>3, lower stability was found as the aspect ratio decrease was more significant and they transformed into spherical particles already at 700 °C. It was confirmed by investigating empty silica shells that the observed conformal change of the shell material when annealing core/shell particles is dictated by the deformation of the core particle. This also implies that a significant mechanical stress is exerted on the shell upon core deformation. In accordance with this, for the highest aspect ratio (AR~4) nanorod the shell breaks up at 900 °C and the gold cores were partially released and coalesced into large spherical particles.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal stability of mesoporous silica-coated gold nanorods with different aspect ratios

Gergely-Fülöp

Zámbó

Deák

2014

Materials Chemistry and Physics

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“…Figure 5 shows results for a metal backed thin absorbing layer, where the carbon is placed on 200nm of gold. This metal can be used to around 500K [26], [27] and will allow initial room temperature and medium temperature studies to be performed in future. Later in the paper we show results using the high melting point metal tungsten.…”

Section: Resultsmentioning

confidence: 99%

Broadband metasurface absorber for solar thermal applications

Wan

Chen

Cryan

2015

J. Opt.

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In this paper we propose a broadband polarization independent selective absorber for solar thermal applications. It is based on a metal-dielectric-metal metasurface structure, but with an inter-layer of absorbing amorphous carbon rather than a low loss dielectric. Optical absorbance results derived from Finite Difference Time Domain modelling are shown for ultra-thin carbon layers in air and on 200nm of gold for a range of carbon thicknesses. A gold-amorphous carbon-gold trilayer with a top layer consisting of a 1D grating is then optimised in 2D to give a sharp transition from strong absorption up to 2m to strong reflection above 2m resulting in good solar selective performance. The gold was replaced by the high melting point metal tungsten and is shown to have very similar performance to the gold case. 3D simulations then show that the gold based structure performs well as a square periodic array of squares, however there is low absorption around 400nm. A cross based structure is found to increase this absorption without significantly reducing the performance at longer wavelengths.

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“…The State University of New York (SUNY; DE-FE0007190) is developing heat-activated plasmonic chemical sensors for H 2 , CO, and NO 2 capable of 500 -800°C operation [22]. The technology is centered on creating gold (Au) nanoparticles embedded in a metal oxide matrix with stabilized geometry and optical signature at high temperatures [22,23]. The University of Pittsburgh (#DE-FE0003859) have conducted research in fiber optic sensor platform technology that is stable up to 1100°C and capable of measuring optical flow, temperature (up to 800°C), pressure (15 -2000psi), and H 2 concentration (0.2 -10%) [24].…”

Section: Extramural Research Program Overviewmentioning

confidence: 99%

High temperature, harsh environment sensors for advanced power generation systems

et al. 2015

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One mission of the Crosscutting Technology Research program at the National Energy Technology Laboratory is to develop a suite of sensors and controls technologies that will ultimately increase efficiencies of existing fossil-fuel fired power plants and enable a new generation of more efficient and lower emission power generation technologies. The program seeks to accomplish this mission through soliciting, managing, and monitoring a broad range of projects both internal and external to the laboratory which span sensor material and device development, energy harvesting and wireless telemetry methodologies, and advanced controls algorithms and approaches. A particular emphasis is placed upon harsh environment sensing for compatibility with high temperature, erosive, corrosive, and highly reducing or oxidizing environments associated with large-scale centralized power generation. An overview of the full sensors and controls portfolio is presented and a selected set of current and recent research successes and on-going projects are highlighted. A more detailed emphasis will be placed on an overview of the current research thrusts and successes of the in-house sensor material and device research efforts that have been established to support the program. Introduction:

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Thermal Stability of Gold Nanorods for High-Temperature Plasmonic Sensing

Cited by 52 publications

References 40 publications

Thermal stability of mesoporous silica-coated gold nanorods with different aspect ratios

Thermal stability of mesoporous silica-coated gold nanorods with different aspect ratios

Broadband metasurface absorber for solar thermal applications

High temperature, harsh environment sensors for advanced power generation systems

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