Photothermal response of the plasmonic nanoconglomerates in films assembled by electroless plating

Lisunova, Milana; Wei, Xingfei; DeJarnette, Drew; Forcherio, Gregory T.; Berry, Keith R.; Blake, Phillip; Roper, D. Keith

doi:10.1039/c4ra03351e

Cited by 10 publications

(7 citation statements)

References 66 publications

(97 reference statements)

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“…1 and S1-S3 † show the range of bilayer thicknesses); (3) the method of introducing Ag@AuNCs to the free standing lm; and (4) laser wavelengths of 532 nm and 780 nm near the spectral extinction maxima of about 520 nm and 720 to 750 nm. [48][49][50] Direct evaluation of the Ag@AuNCs temperature variation, due to plasmonic excitation, is precluded by an ultra-fast heat dissipation (100-380 ps) 51 from the highly thermoconductive Ag@AuNCs (ca. [48][49][50] Direct evaluation of the Ag@AuNCs temperature variation, due to plasmonic excitation, is precluded by an ultra-fast heat dissipation (100-380 ps) 51 from the highly thermoconductive Ag@AuNCs (ca.…”

Section: Resultsmentioning

confidence: 99%

“…Overall photon-toheat conversion provides a measure of dissipated heat from excited nanoparticles to the polymer free standing lm. [48][49][50] Direct evaluation of the Ag@AuNCs temperature variation, due to plasmonic excitation, is precluded by an ultra-fast heat dissipation (100-380 ps) 51 from the highly thermoconductive Ag@AuNCs (ca. 100-60 W m À1 K À1 ) as well as ultra-low time relaxation of about <10 À9 s. 49,[52][53][54] Measurements conducted with green and red lasers at wavelengths of 532 nm and 780 nm, respectively, demonstrated that the (PVA/PVPON_Ag@AuNCs) n are active for both laser radiations.…”

Section: Resultsmentioning

confidence: 99%

“…48,50,59 The two lasers with wavelength of 532 nm (MXLFN-532, CNI, Changchung, CN) and 780 nm (100 mW Infrared Laser Diode Module Lazer Dot, Laserlands, China) have been used. The camera that captures temperature variation (ICI 7320, Infrared Cameras Inc., Beaumont, TX, USA) was placed behind the sample, opposite the laser.…”

Section: Photothermal Properties Measurementmentioning

confidence: 99%

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The unusual visible photothermal response of free standing multilayered films based on plasmonic bimetallic nanocages

et al. 2015

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An optical phenomena based on the incident light absorption and transduction to the detectable thermal signal by plasmonic bimetallic Ag and Au nanocages (Ag@AuNCs) has been researched on free standing layer-by-layer (LbL) films of poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVPON), (PVA/ PVPON_Ag@AuNCs). Unlike well-studied monometallic Au nanocages (NCs), which possess a photothermal response in the near-infrared region, the bimetallic nanocages show a pronounced photothermal response in the visible range (532 nm) and near-infrared range (780 nm) due to the presence of two characteristic peaks at both wavelength ranges. The photothermal response in the visible range (532 nm) is distinguishable. Specifically increasing the laser power to 100 mW led to visual burning of the free standing film (temperature increased greater than >150 C). The photothermal response by (PVA/PVPON_Ag@AuNCs) n films increases in proportion to the number (n) of bilayers (bl). It also increases as the molar concentration of the Ag@AuNCs introduced to the PVPON layer is increased. Therefore the molar concentration of the plasmonic Ag@AuNCs in (PVA/PVPON_Ag@AuNCs) n films is a primary factor that affects the photothermal dynamic response along with Ag@AuNCs distribution. This is supposed to result from the Ag@AuNCs assembled in a layer that leads to electromagnetic field enhancement. The unusual observation in multilayered (PVA/PVPON_Ag@AuNCs) n films is that the UVvisible spectra (extinction efficiency) and photothermal response (T max ) do not rely on the content of the adjacent layer of PVA and show a comparable (by value in magnitude) photothermal response at a different PVA composition of 2 mg ml À1 and 20 mg ml À1 at the same Ag@AuNCs concentration in the PVPON layer.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Photothermal Properties Measurementmentioning

confidence: 99%

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The unusual visible photothermal response of free standing multilayered films based on plasmonic bimetallic nanocages

et al. 2015

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“…30 Ordered AuNP metaatoms on a thin Au film increased light-to-heat conversion by 26%. 31 A macroscopic energy balance using an Figure 7. Measured (green dots) and simulated (blue line) quadrupolar LR (a) and dipolar LR (b) spectral peaks from a 649x655 nm rectangular lattice of 132 nm radius spheroidal AuNP.…”

Section: Internal Reflectance Enhances Optoplasmonic Dissipationmentioning

confidence: 99%

Electron optics of nanoplasmonic metamaterials in bio/opto theranostics

Roper

DeJarnette

Forcherio

et al. 2014

Biosensing and Nanomedicine VII

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Opto-electronic coupling of plasmonic nano-antennas in the near infrared water window in vitro and in vivo is of growing interest for imaging contrast agents, spectroscopic labels and rulers, biosensing, drug-delivery, and optoplasmonic ablation. Metamaterials composed of nanoplasmonic meta-atoms offer improved figures of merit in many applications across a broader spectral window. Discrete and coupled dipole approximations effectively describe localized and coupled resonance modes in nanoplasmonic metamaterials. From numeric and experimental results have emerged four design principles to guide fabrication and implementation of metamaterials in bio-related devices and systems. Resonance intensity and sensitivity are enhanced by surface-to-mass of meta-atoms and lattice constant. Fano resonant coupling is dependent on meta-atom polarizability and lattice geometry. Internal reflection in plasmonic metaatom-containing polymer films enhances dissipation rate. Dimensions of self-assembled meta-atoms depend on balancing electrochemical and surface forces. Examples of these principles from our lab compare computation with images and spectra from ordered metal-ceramic and polymeric nanocomposite metamaterials for bio/opto theranostic applications. These principles speed design and description of new architectures for nanoplasmonic metamaterials that show promise for bioapplications.

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“…Metal and highly doped semiconducting nanoparticles exhibit size and shape-dependent surface plasmon resonance modes, arising due to the collective oscillation of free electrons within the particle in response to incident electromagnetic fields. Excited plasmons have been utilized in heat generation or light trapping in thin films [5,6], tunable metamaterials and frequency selective surfaces [7][8][9], colloidal suspensions in a medium of various shapes, 2 sizes, and composition [10][11][12][13], and for selective catalysis through plasmon decay into hot electrons [14,15]. Because the plasmon modes strongly couple with light, many metal nanoparticles possess narrow band resonances that selectively absorb or scatter particular energies of incident photons, giving rise to vivid colors when dispersed in solutions or thin films, an effect that has been unknowingly used for centuries in dichroic and stained glass.…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle enhanced spectral filtration of insolation from trough concentrators

DeJarnette

Tunkara

Brekke

et al. 2016

Solar Energy Materials and Solar Cells

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A nanoparticle fluid filter consisting of gold nanoparticles and indium tin oxide nanocrystals was fabricated and the optical properties were assessed. Results were integrated against the AM 1.5 solar spectrum to determine solar weighted efficiency of the filter for light energies transmitted above the bandgap to a photovoltaic cell for direct electrical generation while absorbing light below the bandgap that is converted to heat for thermal storage or processing. Temperature dependent bandgaps for both GaAs and cSi were used for optimization of the filter design. GaAs is preferred based upon its higher IR reflectivity, lower temperature coefficient, and greater high-temperature efficiency. However, cSi is significantly cheaper than current and projected GaAs costs. It was found that the experimental filter efficiency was 62% for GaAs and 56% for cSi which was within 6% of previous theoretical predictions.

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Photothermal response of the plasmonic nanoconglomerates in films assembled by electroless plating

Abstract: Conversion of light energy to heat by ordered gold nanostructures on a gold film has been investigated.

Cited by 10 publications

References 66 publications

The unusual visible photothermal response of free standing multilayered films based on plasmonic bimetallic nanocages

The unusual visible photothermal response of free standing multilayered films based on plasmonic bimetallic nanocages

Electron optics of nanoplasmonic metamaterials in bio/opto theranostics

Nanoparticle enhanced spectral filtration of insolation from trough concentrators

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