Surface Plasmon Enhanced Fluorescence Temperature Mapping of Aluminum Nanoparticle Heated by Laser

Zakiyyan, Naadaa; Darr, Charles M.; Chen, Biyan; Mathai, Cherian J.; Gangopadhyay, Keshab; McFarland, Jacob; Gangopadhyay, Shubhra; Maschmann, Matthew R.

doi:10.3390/s21051585

Cited by 8 publications

(5 citation statements)

References 79 publications

(117 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each particle featured a volumetric energy generation term consistent with the simulated energy absorption, which was consistent with our previous reports . Previous experiments confirmed that the grating itself generates negligible heating during irradiation . A more detailed simulation configuration and results can be seen in Figure S3.…”

Section: Resultssupporting

confidence: 87%

“…40 Previous experiments confirmed that the grating itself generates negligible heating during irradiation. 41 A more detailed simulation configuration and results can be seen in Figure S3. The nearly constant temperature ramp rate, shown in the offsets of Figure 3, is a key feature in the transient temperature profiles and results from the 7 μs (446 nm) laser rise time.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Spallation of Isolated Aluminum Nanoparticles by Rapid Photothermal Heating

Zakiyyan

Mathai

McFarland

et al. 2022

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

The spallation of isolated aluminum (Al) nanoparticles (NPs) is initiated using rapid photothermal heating. The Al NPs exhibited a nominal diameter of 120 nm, with an average oxide shell thickness of 3.8 nm. Photothermal heating was achieved by coupling a focused laser (446 nm wavelength) to an optical grating substrate and to the plasmonic resonance of the Al NPs themselves. These factors enhanced the absorption cross section by a factor of 8−18 compared to no substrate and generated an Al NP heating rate on the order of 10 7 −10 8 K/s. Observations indicate that molten Al is ejected from the heated NP, indicating that melting of the Al core is required for spallation. A graphene layer atop the grating substrate encouraged the formation of discrete particles of ejected Al, while irregular elongated filament products were observed without the graphene layer. Numerical simulations indicate that laser-heated Al NPs reach temperatures between approximately 1000 and 1500 K. These observations and experimental conditions are consistent with those anticipated for the melt dispersion mechanism, a thermomechanical reaction mechanism that has not previously been clearly demonstrated. Activating and controlling this mechanism is anticipated to enhance applications ranging from biological phototherapy to energetic materials.

show abstract

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Spallation of Isolated Aluminum Nanoparticles by Rapid Photothermal Heating

Zakiyyan

Mathai

McFarland

et al. 2022

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…Over the past decade, numerous studies have been conducted using non-invasive 2D imaging of the temperature distribution on the micron and sub-micron levels [10][11][12][13]. The most promising non-invasive measurement techniques derive from the field of luminescence thermometry, which exploits temperature-dependent spectral changes of luminescent phosphors [14,15].…”

Section: Introductionmentioning

confidence: 99%

Spatially Resolved Temperature Distribution in a Rare-Earth-Doped Transparent Glass-Ceramic

Sedmak

Podlipec

Urbančič

et al. 2022

Sensors

View full text Add to dashboard Cite

Knowing the temperature distribution within the conducting walls of various multilayer-type materials is crucial for a better understanding of heat-transfer processes. This applies to many engineering fields, good examples being photovoltaics and microelectronics. In this work we present a novel fluorescence technique that makes possible the non-invasive imaging of local temperature distributions within a transparent, temperature-sensitive, co-doped Er:GPF1Yb0.5Er glass-ceramic with micrometer spatial resolution. The thermal imaging was performed with a high-resolution fluorescence microscopy system, measuring different focal planes along the z-axis. This ultimately enabled a precise axial reconstruction of the temperature distribution across a 500-µm-thick glass-ceramic sample. The experimental measurements showed good agreement with computer-modeled heat simulations and suggest that the technique could be adopted for the spatial analyses of local thermal processes within optically transparent materials. For instance, the technique could be used to measure the temperature distribution of intermediate, transparent layers of novel ultra-high-efficiency solar cells at the micron and sub-micron levels.

show abstract

“…The theoretical and experimental observation concludes that sparsely distributed Al NPs could not be ignited under flash heating [55]. Previously, we reported that single Al NP residing on the grating platform could not achieve a high enough temperature to initiate any ignition by laser-induced heating [138]. A higher temperature rise rate has also been found for larger packing densities of Al NPs clusters in that more heat per unit volume is absorbed [50].…”

Section: Comsol Simulationmentioning

confidence: 87%

“…The graphene sheets conformed well to the grating surface and Al NPs, as demonstrated by atomic force microscope (AFM, Innova Bruker) and scanning electron microscope (SEM, FEI Scios) images. Similar to our experiment setup described previously [50,138], a diode laser, focused by the optical microscope objective, supplied targeted photothermal heating.…”

Section: Graphene-isolated Aluminum Particles Reaction In Oil Mediummentioning

confidence: 99%

Investigation of nanoenergetic combustion study of aluminum nanoparticles systems on plasmonic grating platform

Zakiyyan¹

View full text Add to dashboard Cite

With renewed interest in energetic materials like aluminum, many fundamental issues concerning the ignition and combustion characteristics at nanoscales remain to be clarified. Aluminum nanoparticles (Al NP) are widely used solid-state fuels in energetic material applications due to the abundance of aluminum and high heat of reaction. The metallic Al core of Al NP must escape an alumina shell to react with oxidizers. The diffusion oxidation mechanism (DOM) of aluminum has been suggested as governing the reaction mechanism, whereby both oxygen and aluminum diffuse through the oxide shell at low heating rates of 10^4-10^6 K/s. However, Al diffusion through the encapsulating shell restricts the reaction rate between the fuel and surrounding oxide. An alternative model is proposed and known as the melt dispersion mechanism (MDM), a rapid thermomechanical mechanism for rapid heating [greater than] 10^6 K/s. This mechanism is driven by the volumetric expansion of rapidly melting Al core which ruptures the oxide shell. MDM has been widely proposed, and we present the first Al NP spallation observed at a particle scale. Plasmonic photothermal heating was needed to facilitate the rapid heating required to initiate the MDM reaction mechanism. A plasmonic grating coupled with an external laser significantly enhances the intensity of photothermal heating experienced by an Al NP. Aluminum, itself, has strong plasmon resonances throughout the visible and ultraviolet spectrum and may be tuned based on Al NP diameter. Our experimental setup encompasses a wide range of available imaging methods to increase the imaging resolution in a table-top optical microscope. A high-resolution camera with a polarization-based scattering method readily identifies whether a particle is metallic or nonmetallic based on the obtained light intensity. Spatiotemporal temperature dependence of Al NP is also observed using fluorescent dyes embedded in a polymer matrix. Finally, the photothermal heating of Al NP in different systems is modeled in COMSOL Multiphysics software using Electromagnetic Waves and Heat Transfer Modules. Based on the simulation, the estimated heating rate can determine the potential mechanism of the observed mechanism. The findings underline the crucial role of heating rates in observing particle spallation through plasmonic enhanced photothermal heating. Combustion of Al NPs is also studied with fluoropolymer and metal-oxide acting as the oxidizer. The current study aims to establish a unified theory accommodating the reaction mechanisms of aluminum particles at micro and nanoscales. The presented works investigate the material constituents starting from individual particle-scale to macro bulk-scale to understand their reaction mechanism better.

show abstract

Surface Plasmon Enhanced Fluorescence Temperature Mapping of Aluminum Nanoparticle Heated by Laser

Cited by 8 publications

References 79 publications

Spallation of Isolated Aluminum Nanoparticles by Rapid Photothermal Heating

Spallation of Isolated Aluminum Nanoparticles by Rapid Photothermal Heating

Spatially Resolved Temperature Distribution in a Rare-Earth-Doped Transparent Glass-Ceramic

Investigation of nanoenergetic combustion study of aluminum nanoparticles systems on plasmonic grating platform

Contact Info

Product

Resources

About