photothermal conversion absorption

Enhancements of absorption and photothermal

2019-9-1  Absorption and photo-thermal conversion by nanoparticles. In this section, Mie theory will be used to study optical properties of spherical nanoparticles while finite-difference time-domain (FDTD) method will be employed to calculate optical properties of nanoparticle with arbitrary shapes. 4.1. Absorption enhancement in isotropic nanoparticles

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Broadband absorption and enhanced photothermal

2017-12-19  Photothermal conversion (PTC) materials can absorb incident photons and generate heat. Hence they are applicable in many fields, such as

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Broadband absorption and enhanced photothermal

The synthesized [email protected] structures show a broad band absorption spectrum from 300 to 1100 nm. Enhanced photothermal conversion effect is observed under the illuminations of 635, 808, and 1064 nm lasers. The results indicate that the octopod-like [email protected] 2 S [email protected] structures have characteristics of multi-band photothermal conversion. The ...

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Investigation of optical absorption and photothermal ...

photothermal conversion properties. For instance, Wang et al.19 studied the optical absorption and photothermal conversion properties of the CuO nano uid, and the results showed that the nano uid has high photothermal conversion performance under the 635 nm visible light irradiation. Lee et al.24 investi-

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Optical characterisation and photothermal conversion ...

2020-12-1  The results from Fig. 10 prove that the absorbed energy is also stored in the same region, thus confirming that the use of nanofluids is an appealing approach to the development of compact solar collectors, allowing a reduction in the volume of liquid necessary for solar energy absorption and storage. 3.3. Photothermal conversion efficiency

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Plasmonic Nanostructures for Photothermal Conversion ...

As it determines the photothermal conversion efficiency, we calculated the absorption efficiency (σ abs /σ ext) for Au nanospheres with a broad range of diameters. As shown in Figure 1c , in general, smaller Au nanoparticles exhibit higher absorption efficiency in the entire visible spectrum (400–800 nm), suggesting their advantage in the ...

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Mesoporous CuO with full spectrum absorption for ...

2020-5-1  Many semiconductors with broad solar spectrum absorption have always been pursuing for the effective photothermal conversion process. However, it is still a challenge to modulate the structural and bandgap of semiconductors to enhance the

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Experimental Comparison of Photothermal Conversion ...

2018-2-18  high photothermal conversion efficiency (PCE), which makes nanosphere an inadequate choice since its absorption peak is in the range of the visible spectrum [18]. The gold nanorods are thought to be one of the most effective photothermal conversion agents, owing to their high tunable aspect ratio and strong biocompatibility [14,26].

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Properties of solar energy absorption and photothermal ...

As a kind of clean and renewable energy, solar energy has been widely used in photovoltaic power generation, photothermal utilization, photocatalysis and other fields. According to its working temperature range, photothermal utilization can be divided into three areas: Low-temperature heat utilization ( medium-temperature heat utilization

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Broadband absorption and enhanced photothermal

2017-12-19  Photothermal conversion (PTC) materials can absorb incident photons and generate heat. Hence they are applicable in many fields, such as photothermal therapy 1,2,3,4,5, photothermal imaging 6,7 ...

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Investigation of optical absorption and photothermal ...

photothermal conversion properties. For instance, Wang et al.19 studied the optical absorption and photothermal conversion properties of the CuO nano uid, and the results showed that the nano uid has high photothermal conversion performance under the 635 nm visible light irradiation. Lee et al.24 investi-

Read More
Plasmonic Nanostructures for Photothermal Conversion ...

As it determines the photothermal conversion efficiency, we calculated the absorption efficiency (σ abs /σ ext) for Au nanospheres with a broad range of diameters. As shown in Figure 1c , in general, smaller Au nanoparticles exhibit higher absorption efficiency in the entire visible spectrum (400–800 nm), suggesting their advantage in the ...

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Multifunctional Photothermal Conversion Nanocoatings ...

Multifunctional Photothermal Conversion Nanocoatings Toward Highly Efficient and Safe High-Viscosity Oil Cleanup Absorption ACS Appl Mater Interfaces . 2021 Mar 17;13(10):11948-11957. doi: 10.1021/acsami.0c22596.

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Photothermal conversion of gold nanoparticles for uniform ...

Photothermal conversion of gold nanoparticles for uniform pulsed laser warming of vitrified biomaterials ... while the GNRs had higher photothermal conversion efficiency, absorption efficiency, and Au mass normalized absorption cross sections. In the characterization, the GNSs with larger scattering-to-absorption ratios could have ∼30% over ...

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Generating long‐wavelength absorption bands with

2021-10-28  The obtained fused f-CDAs exhibit an obvious absorption band in 550–700 nm and significantly enhanced deep red fluorescence in N,N-dimethylformamide with photoluminescence quantum yields of 15.6% and high photothermal conversion efficiency up to 26.1% in water.

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Experimental Comparison of Photothermal Conversion ...

2018-2-18  high photothermal conversion efficiency (PCE), which makes nanosphere an inadequate choice since its absorption peak is in the range of the visible spectrum [18]. The gold nanorods are thought to be one of the most effective photothermal conversion agents, owing to their high tunable aspect ratio and strong biocompatibility [14,26].

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High‐Entropy‐Alloy Nanoparticles with Enhanced

2021-10-4  Photothermal materials with broadband optical absorption and high conversion efficiency are intensively pursued to date. Here, proposing by the d-d interband transitions, we report an unprecedented high-entropy alloy FeCoNiTiVCrCu nanoparticles that the energy regions below and above the Fermi level (±4 eV) have been fully filled by the 3d transition metals, which realizes an average ...

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Properties of solar energy absorption and photothermal ...

As a kind of clean and renewable energy, solar energy has been widely used in photovoltaic power generation, photothermal utilization, photocatalysis and other fields. According to its working temperature range, photothermal utilization can be divided into three areas: Low-temperature heat utilization ( medium-temperature heat utilization (80−250°C) and high-temperature ...

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Review of the Photothermal Energy Conversion

Nanoparticles have been thoroughly investigated in the last few decades because they have many beneficial and functional qualities. Their capability to enhance and manipulate light absorption, thermal conductivity, and heat transfer efficiency has attracted significant research attention. This systematic and comprehensive work is a critical review of research on the photothermal energy ...

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Plasmonic Nanostructures for Photothermal Conversion ...

As it determines the photothermal conversion efficiency, we calculated the absorption efficiency (σ abs /σ ext) for Au nanospheres with a broad range of diameters. As shown in Figure 1c , in general, smaller Au nanoparticles exhibit higher absorption efficiency in the entire visible spectrum (400–800 nm), suggesting their advantage in the ...

Read More
Photothermal conversion of gold nanoparticles for uniform ...

Photothermal conversion of gold nanoparticles for uniform pulsed laser warming of vitrified biomaterials ... while the GNRs had higher photothermal conversion efficiency, absorption efficiency, and Au mass normalized absorption cross sections. In the characterization, the GNSs with larger scattering-to-absorption ratios could have ∼30% over ...

Read More
Multifunctional Photothermal Conversion Nanocoatings ...

Multifunctional Photothermal Conversion Nanocoatings Toward Highly Efficient and Safe High-Viscosity Oil Cleanup Absorption ACS Appl Mater Interfaces . 2021 Mar 17;13(10):11948-11957. doi: 10.1021/acsami.0c22596.

Read More
Experimental Comparison of Photothermal Conversion ...

2018-2-18  high photothermal conversion efficiency (PCE), which makes nanosphere an inadequate choice since its absorption peak is in the range of the visible spectrum [18]. The gold nanorods are thought to be one of the most effective photothermal conversion agents, owing to their high tunable aspect ratio and strong biocompatibility [14,26].

Read More
High‐Entropy‐Alloy Nanoparticles with Enhanced

2021-10-4  Photothermal materials with broadband optical absorption and high conversion efficiency are intensively pursued to date. Here, proposing by the d-d interband transitions, we report an unprecedented high-entropy alloy FeCoNiTiVCrCu nanoparticles that the energy regions below and above the Fermi level (±4 eV) have been fully filled by the 3d transition metals, which realizes an average ...

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Recent Progress of Sub‐Nanometric Materials in ...

2021-11-27  3.3 Photothermal Conversion Mechanisms of the SNMs. There are two kinds of photothermal conversion mechanisms for light-absorption materials: plasmonic localized heating and nonradiative relaxation (Figure 7). Plasmonic localized heating usually occurs in noble metal nanomaterials due to their localized surface plasmon resonance (LSPR) effect.

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Photothermal Conversion of W18O49 with a Tunable

2017-1-18  W 18 O 49 exhibits strong valence-dependent absorption features in the near-IR region. Reduced W 18 O 49 with more W 5+ has a higher concentration of oxygen vacancies, which enhances the localized surface plasmon resonance effect. Reduced W 18 O 49 exhibits a high photothermal conversion efficiency of 59.6 % and has good photothermal stability.

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Properties of solar energy absorption and photothermal ...

As a kind of clean and renewable energy, solar energy has been widely used in photovoltaic power generation, photothermal utilization, photocatalysis and other fields. According to its working temperature range, photothermal utilization can be divided into three areas: Low-temperature heat utilization ( medium-temperature heat utilization (80−250°C) and high-temperature ...

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Optical characteristics and photothermal conversion of ...

2013-11-15  Hence, the extremely broad absorption and intense emission characteristics of the GJ colloids in the vis-NIR range could make it possible to cause a photothermal conversion with high efficiency. The photothermal conversion ability of the GJ colloid was measured by monitoring the temperature change during light irradiation.

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Fabrication of superhydrophobic photothermal conversion ...

2021-4-6  Abstract Photothermal conversion material that generates thermal energy from sunlight is expected to be a promising technology for harvesting and conversion of clean solar energy. However, its photothermal conversion will be affected due to the surface contamination by dirt in outdoor applications, which greatly reduces the solar energy absorption. Herein, a superhydrophobic photothermal ...

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