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Journal articles on the topic 'Plasmonic Nanoparticles(Au, Ag)'

Author: Grafiati

Published: 7 September 2023

Last updated: 31 July 2025

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1

Yeshchenko, O. A., A. O. Bartenev, A. P. Naumenko, N. V. Kutsevol, Iu I. Harahuts, and A. I. Marinin. "Laser-Driven Aggregation in Dextran–Graft–PNIPAM/Silver Nanoparticles Hybrid Nanosystem: Plasmonic Effects." Ukrainian Journal of Physics 65, no. 3 (2020): 254. http://dx.doi.org/10.15407/ujpe65.3.254.

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The laser-induced aggregation in the thermosensitive dextran grafted-poly(N-isopropylacrylamide) copolymer/Ag nanoparticles (D–g–PNIPAM/AgNPs) hybrid nanosystem in water has been observed. The laser-induced plasmonic heating of Ag NPs causes the Lower Critical Solution Temperature (LCST) conformation transition in D–g–PNIPAM/AgNPs macromolecules which shrink during the transition. The shrinking decreases sharply the distance between the silver nanoparticles that launches the aggregation of Ag NPs and the appearance of plasmonic attractive optical forces acting between the nanoparticles. It has

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Abdizadeh challoob, Adyan, and Najwa J. Jubier. "Green Synthesis of Ag-Cu NPs using Black Eggplant Extract as the Reducing and Stabilizing Agents: Characterization and Energy Band Gap." Journal of Physics: Conference Series 2974, no. 1 (2025): 012032. https://doi.org/10.1088/1742-6596/2974/1/012032.

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Abstract The study successfully demonstrated an eco-friendly approach to synthesizing Ag, Cu nanoparticles, and Ag-Cu nanoparticle composites using Black eggplant extract as both a reducing and stabilizing agent, with calcination at 400°C. The research revealed distinct plasmonic properties through Surface Plasmon Resonance (SPR) bands observed at specific wavelengths: 400 nm for Ag, 524 nm for Cu, and dual bands at 406 nm (SPR1) and 600 nm (SPR2) for Ag-Cu nanoparticle composites. The energy gap values for Ag-Cu were identified at 1.8eV, 2.5eV, and 3.7eV. XRD analysis confirmed a polycrystall

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3

Wang, Jing, Kai-Xuan Fei, Xin Yang, Shuai-Shuai Zhang, and Yin-Xian Peng. "Synthesis and Plasmonic Chiroptical Studies of Sodium Deoxycholate Modified Silver Nanoparticles." Materials 11, no. 8 (2018): 1291. http://dx.doi.org/10.3390/ma11081291.

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Sodium deoxycholate modified silver nanoparticles prepared in the presence of sodium deoxycholate as a chiral inducer exhibit plasmonic circular dichroism (CD) signals. The plasmon-induced chirality arises from the presence of chiral molecules (sodium deoxycholate) on the surface of Ag nanoparticles, which transfer their chiral properties to the visible wavelength range due to the Coulomb interactions between the chiral molecules and plasmonic nanoparticles. The prepared Ag nanoparticles (NPs) exhibit distinct line shapes of plasmonic CD, which can be tailored by varying the pH values of the s

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Sotiriou, Georgios A., Gion Diego Etterlin, Anastasia Spyrogianni, Frank Krumeich, Jean-Christophe Leroux, and Sotiris E. Pratsinis. "Plasmonic biocompatible silver–gold alloyed nanoparticles." Chem. Commun. 50, no. 88 (2014): 13559–62. http://dx.doi.org/10.1039/c4cc05297h.

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Sun, Chunlei, Caiyan Qin, Han Zhai, Bin Zhang, and Xiaohu Wu. "Optical Properties of Plasma Dimer Nanoparticles for Solar Energy Absorption." Nanomaterials 11, no. 10 (2021): 2722. http://dx.doi.org/10.3390/nano11102722.

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Plasmonic nanofluids have excellent optical properties in solar energy absorption and have been widely studied in solar thermal conversion technology. The absorption of the visible region of solar energy by ordinary metal nanoparticles is usually limited to a narrow resonance band, so it is necessary to enhance the coupling effect of nanoparticles in the visible spectrum region to improve absorption efficiency. However, it is still a difficult task to improve solar energy absorption by adjusting the structure and performance of nanoparticles. In this paper, a plasma dimer Ag nanoparticle is pr

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Loiseau, Alexis, Victoire Asila, Gabriel Boitel-Aullen, Mylan Lam, Michèle Salmain, and Souhir Boujday. "Silver-Based Plasmonic Nanoparticles for and Their Use in Biosensing." Biosensors 9, no. 2 (2019): 78. http://dx.doi.org/10.3390/bios9020078.

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The localized surface plasmon resonance (LSPR) property of metallic nanoparticles is widely exploited for chemical and biological sensing. Selective biosensing of molecules using functionalized nanoparticles has become a major research interdisciplinary area between chemistry, biology and material science. Noble metals, especially gold (Au) and silver (Ag) nanoparticles, exhibit unique and tunable plasmonic properties; the control over these metal nanostructures size and shape allows manipulating their LSPR and their response to the local environment. In this review, we will focus on Ag-based

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7

Chen, Xining, and Mark P. Andrews. "Polarized and Evanescent Guided Wave Surface-Enhanced Raman Spectroscopy of Ligand Interactions on a Plasmonic Nanoparticle Optical Chemical Bench." Biosensors 14, no. 9 (2024): 409. http://dx.doi.org/10.3390/bios14090409.

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This study examined applications of polarized evanescent guided wave surface-enhanced Raman spectroscopy to determine the binding and orientation of small molecules and ligand-modified nanoparticles, and the relevance of this technique to lab-on-a-chip, surface plasmon polariton and other types of field enhancement techniques relevant to Raman biosensing. A simplified tutorial on guided-wave Raman spectroscopy is provided that introduces the notion of plasmonic nanoparticle field enhancements to magnify the otherwise weak TE- and TM-polarized evanescent fields for Raman scattering on a simple

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8

Kodanek, Torben, Axel Freytag, Anja Schlosser, et al. "Macroscopic Aerogels with Retained Nanoscopic Plasmonic Properties." Zeitschrift für Physikalische Chemie 232, no. 9-11 (2018): 1675–89. http://dx.doi.org/10.1515/zpch-2017-1045.

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Abstract Aerogels can bridge the nanoscopic to the macroscopic world. One physical phenomenon typically limited to the nanoscopic world is the occurrence of localized surface plasmon resonances (LSPRs), which are observed in conductive nanoparticles. Once brought into close contact, assemblies or superstructures of these nanoparticles often lose their plasmonic properties in the transition stage towards the bulk material. Therefore, LSPRs are typically not observed in macroscopic objects. The present work aims at voluminous nanoparticle-based aerogels with optical properties close to that of t

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9

Hu, Yang, Chao Pan, Cai Xia Gao, Jun Fan, and En Zhou Liu. "Photocatalytic Water Splitting over Ag/TiO₂ Nano-Wire Films." Applied Mechanics and Materials 665 (October 2014): 288–91. http://dx.doi.org/10.4028/www.scientific.net/amm.665.288.

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Plasmonic Ag decorated TiO2 nano-wire film was firstly prepared by the combination of a hydrothermal method and a microwave-assisted chemical reduction process. The results show that Ag deposited TiO2 film exhibits obvious visible light absorption due to surface plasmon resonance absorption of Ag nanoparticles. Besides, fluorescence quenching is observed in the composite film under the excitation of 250 nm. Photocatalytic tests show that Ag deposited TiO2 exhibits enhanced photocatalytic activity for H2 production by water splitting due to the synergistic effect between charge transfer and sur

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10

Kuriakose, Sini, Vandana Choudhary, Biswarup Satpati, and Satyabrata Mohapatra. "Enhanced photocatalytic activity of Ag–ZnO hybrid plasmonic nanostructures prepared by a facile wet chemical method." Beilstein Journal of Nanotechnology 5 (May 15, 2014): 639–50. http://dx.doi.org/10.3762/bjnano.5.75.

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We report the synthesis of Ag–ZnO hybrid plasmonic nanostructures with enhanced photocatalytic activity by a facile wet-chemical method. The structural, optical, plasmonic and photocatalytic properties of the Ag–ZnO hybrid nanostructures were studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), photoluminescence (PL) and UV–visible absorption spectroscopy. The effects of citrate concentration and Ag nanoparticle loading on the photocatalytic activity of Ag–ZnO hybrid nanostructures towards sun-light driven degradation

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11

Yazdani, Ahmad, Mahdi Ghazanfari, and Fatemeh Johar. "Light trapping effect in plasmonic blockade at the interface of Fe3O4@Ag core/shell." RSC Advances 5, no. 51 (2015): 40989–96. http://dx.doi.org/10.1039/c5ra06412k.

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Spherical isotropic Fe<sub>3</sub>O<sub>4</sub>nanoparticles were coated with Ag-shell in order to investigate the possibility of trapping photons through plasmon or plasmonic energy transfer at the magnetic–plasmonic interface coupling structure of core/shell.

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12

Kanapina, A. E. "FEATURES OF THE DECAY OF EXCITED STATES OF IONIC DYES IN THE NEAR FIELD OF METAL NANOPARTICLES." Eurasian Physical Technical Journal 20, no. 2 (44) (2023): 106–11. http://dx.doi.org/10.31489/2023no2/106-111.

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The influence factor of silver nanoparticles on the intramolecular processes of deactivation of the electronically excited state of polymethine dyes (PD) of different ionicity has been studied. It has been demonstrated that the optical density forcationic 1 and anionic 2 dyes does not change under the action of the plasmon field of Ag nanoparticles. Whereas an increase in absorbance by almost 18% was observed for neutral dye 3. A decrease in the enhancement in fluorescence intensity in the series of anionic–cationic–neutral dyes was registered upon addition of Ag nanoparticles to their solutio

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Schiffmann, Alexander, Thomas Jauk, Daniel Knez, et al. "Helium droplet assisted synthesis of plasmonic Ag@ZnO core@shell nanoparticles." Nano Research 13, no. 11 (2020): 2979–86. http://dx.doi.org/10.1007/s12274-020-2961-z.

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Abstract Plasmonic Ag@ZnO core@shell nanoparticles are formed by synthesis inside helium droplets with subsequent deposition and controlled oxidation. The particle size and shape can be controlled from spherical sub-10 nm particles to larger elongated structures. An advantage of the method is the complete absence of solvents, precursors, and other chemical agents. The obtained particle morphology and elemental composition have been analyzed by scanning transmission electron microscopy (STEM) and energy dispersive X-ray spectroscopy (EDS). The results reveal that the produced particles form a c

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Sharma, Himanshu, and R. Singhal. "SHI irradiation induced modifications of plasmonic properties of Ag-TiO2 thin film and study using FDTD simulation." Materials Science-Poland 37, no. 3 (2019): 373–80. http://dx.doi.org/10.2478/msp-2019-0038.

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AbstractModifications in morphological and plasmonic properties of heavily doped Ag-TiO2 nanocomposite thin films by ion irradiation have been observed. The Ag-TiO2 nanocomposite thin films were synthesized by RF co-sputtering and irradiated by 90 MeV Ni ions with different fluences. The modifications in morphological, structural and plasmonic properties of the nanocomposite thin films caused by ion irradiation were studied by transmission electron microscopy (TEM), X-ray diffraction (XRD), and UV-Vis absorption spectroscopy. The thickness of the film and concentration of Ag were assessed by R

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15

Khurgin, Jacob B. "Pliable polaritons: Wannier exciton-plasmon coupling in metal-semiconductor structures." Nanophotonics 8, no. 4 (2018): 629–39. http://dx.doi.org/10.1515/nanoph-2018-0166.

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AbstractPlasmonic structures are known to support the modes with sub-wavelength volumes in which the field/matter interactions are greatly enhanced. Coupling between the molecular excitations and plasmons leading to the formation of “plexcitons” has been investigated for a number of organic molecules. However, plasmon-exciton coupling in metal/semiconductor structures has not experienced the same degree of attention. In this work, we show that the “very strong coupling” regime in which the Rabi energy exceeds the exciton binding energy is attainable in semiconductor-cladded plasmonic nanoparti

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Loukopoulos, Stelios, Elias Sakellis, Polychronis Tsipas, et al. "Visible-Light-Responsive Ag(Au)/MoS2-TiO2 Inverse Opals: Synergistic Plasmonic, Photonic, and Charge Transfer Effects for Photoelectrocatalytic Water Remediation." Nanomaterials 15, no. 14 (2025): 1076. https://doi.org/10.3390/nano15141076.

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Titanium dioxide (TiO2) is a benchmark photocatalyst for environmental applications, but its limited visible-light activity due to a wide band gap and fast charge recombination restricts its practical efficiency. This study presents the development of heterostructured Ag (Au)/MoS2-TiO2 inverse opal (IO) films that synergistically integrate photonic, plasmonic, and semiconducting functionalities to overcome these limitations. The materials were synthesized via a one-step evaporation-induced co-assembly approach, embedding MoS2 nanosheets and plasmonic nanoparticles (Ag or Au) within a nanocryst

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17

Kolwas, Krystyna. "Optimization of Coherent Dynamics of Localized Surface Plasmons in Gold and Silver Nanospheres; Large Size Effects." Materials 16, no. 5 (2023): 1801. http://dx.doi.org/10.3390/ma16051801.

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Noble metal nanoparticles have attracted attention in recent years due to a number of their exciting applications in plasmonic applications, e.g., in sensing, high-gain antennas, structural colour printing, solar energy management, nanoscale lasing, and biomedicines. The report embraces the electromagnetic description of inherent properties of spherical nanoparticles, which enable resonant excitation of Localized Surface Plasmons (defined as collective excitations of free electrons), and the complementary model in which plasmonic nanoparticles are treated as quantum quasi-particles with discre

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18

Saad, A. M., M. B. Mohamed, and I. M. Azzouz. "Synthesis, optical properties, and amplified spontaneous emission of hybrid Ag–SiO2–CdTe nanocomposite." Canadian Journal of Physics 95, no. 10 (2017): 933–40. http://dx.doi.org/10.1139/cjp-2016-0368.

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In this work, a hybrid nanocomposite of metal–dielectric–semiconductor, Ag–SiO2–CdTe, nanoparticles has been synthesized. Silica shell was used as a spacer to isolate and control the distance between Ag plasmonic and luminescent CdTe QDs. It was found that insertion of silica shell enhances the plasmonic field more than 31%. Accordingly, Ag-SiO2 plasmonic enhances the luminescence and quantum yield of CdTe quantum dots by 200% and 55%, respectively. The threshold power of amplified spontaneous emission of CdTe was found to depend on both temperature and excitation wavelength location with resp

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19

dos Santos, Paulo S. S., João Mendes, B. Dias, I. Pastoriza-Santos, J. M. M. M. de Almeida, and Luís C. C. Coelho. "Strongly coupled plasmonic systems on optical fiber sensors: A study on nanomaterial properties." Journal of Physics: Conference Series 2407, no. 1 (2022): 012052. http://dx.doi.org/10.1088/1742-6596/2407/1/012052.

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Abstract New paths to increase the sensing performance of plasmonic sensors have been reported in recent years. There are several methodologies to achieve such purpose, namely by optimizing the nanostructure, nanomaterial and even the sensing platform. Recently the use nanoparticles over plasmonic thin films have been reported and shown sensitivity enhancement, when compared to a bare thin film. Nevertheless, a nanomaterial combination between NP and thin film has not been studied. In this work it was studied such plasmonic materials in order to optimize not only refractometric sensitivity but

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Kumar, P. Naveen, Neena Bachan, V. Chandrakala, et al. "Relative Analysis of Plasmonic Impact of Silver and Aluminium Nanoparticles on SnO2 Nanoparticles for Photovoltaic Applications." Advanced Science Letters 24, no. 8 (2018): 5661–65. http://dx.doi.org/10.1166/asl.2018.12171.

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The present study reports Ag and Al plasmon doped SnO2 nanoparticles synthesized by a facile sol–gel route for photovoltaic applications. The crystallite and particle size of the samples detected from X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) studies depict that the Ag and Al doped SnO2 nanoparticles possessed declined sizes due to the effect of plasmons. Ultra Violet Diffuse Reflectance Spectroscopy (UV-DRS) technique deduced the optical behaviour of the samples enriched with Surface Plasmon Resonance effect in the doped SnO2 nanoparticles. Surface prope

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Zakia, Maulida, and Seong Il Yoo. "Core–satellite assemblies of Au@polydopamine@Ag nanoparticles for photothermal-mediated catalytic reaction." Soft Matter 16, no. 45 (2020): 10252–59. http://dx.doi.org/10.1039/d0sm01656j.

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Ning, Shuya, Shuo Wang, Zhihui Liu, Naming Zhang, Bin Yang, and Fanghui Zhang. "Study on Magnetic and Plasmonic Properties of Fe3O4-PEI-Au and Fe3O4-PEI-Ag Nanoparticles." Materials 17, no. 2 (2024): 509. http://dx.doi.org/10.3390/ma17020509.

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Magnetic–plasmonic nanoparticles (NPs) have attracted great interest in many fields because they can exhibit more physical and chemical properties than individual magnetic or plasmonic NPs. In this work, we synthesized Au- or Ag-decorated Fe3O4 nanoparticles coated with PEI (Fe3O4-PEI-M (M = Au or Ag) NPs) using a simple method. The influences of the plasmonic metal NPs’ (Au or Ag) coating density on the magnetic and plasmonic properties of the Fe3O4-PEI-M (M = Au or Ag) NPs were investigated, and the density of the plasmonic metal NPs coated on the Fe3O4 NPs surfaces could be adjusted by cont

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Osváth, Zoltán, András Pálinkás, Gábor Piszter, and György Molnár. "Synthesis and Characterization of Graphene–Silver Nanoparticle Hybrid Materials." Materials 13, no. 20 (2020): 4660. http://dx.doi.org/10.3390/ma13204660.

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Silver nanoparticles (Ag NPs) play important roles in the development of plasmonic applications. Combining these nanoparticles with graphene can yield hybrid materials with enhanced light–matter interaction. Here, we report a simple method for the synthesis of graphene–silver nanoparticle hybrids on highly oriented pyrolytic graphite (HOPG) substrates. We demonstrate by scanning tunneling microscopy and local tunneling spectroscopy measurements the electrostatic n-type doping of graphene by contact with silver. We show by UV-Vis reflectance investigations that the local surface plasmon resonan

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Kane, Kenneth A., and Massimo F. Bertino. "Pulsed laser synthesis of highly active Ag–Rh and Ag–Pt antenna–reactor-type plasmonic catalysts." Beilstein Journal of Nanotechnology 10 (September 26, 2019): 1958–63. http://dx.doi.org/10.3762/bjnano.10.192.

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Ag, Pt, and Rh monometallic colloids were produced via laser ablation. Separate Ag–Rh and Ag–Pt heterostructures were formed by mixing and resulted in groupings of Rh/Pt nanoparticles adsorbing to the concavities of the larger Ag nanostructures. The 400 nm Ag plasmonic absorption peak was slightly blue-shifted for Ag–Pt and red-shifted for Ag–Rh heterostructures. Catalytic activity for the reduction of 4-nitrophenol increased significantly for Ag–Pt and Ag–Rh compared to the monometallic constituents, and persisted at lower loading ratios and consecutive reduction cycles. The enhancement is at

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Mamonova, Daria V., Anna A. Vasileva, Yuri V. Petrov, et al. "Laser-Induced Deposition of Plasmonic Ag and Pt Nanoparticles, and Periodic Arrays." Materials 14, no. 1 (2020): 10. http://dx.doi.org/10.3390/ma14010010.

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Surfaces functionalized with metal nanoparticles (NPs) are of great interest due to their wide potential applications in sensing, biomedicine, nanophotonics, etc. However, the precisely controllable decoration with plasmonic nanoparticles requires sophisticated techniques that are often multistep and complex. Here, we present a laser-induced deposition (LID) approach allowing for single-step surface decoration with NPs of controllable composition, morphology, and spatial distribution. The formation of Ag, Pt, and mixed Ag-Pt nanoparticles on a substrate surface was successfully demonstrated as

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Heidarzadeh, Hamid. "Design and optimization of polymer-based organic solar cells with enhanced photocurrent using plasmonic metal-metal core-shell nanoparticles." World Journal of Environmental Research 14, no. 2 (2024): 111–22. https://doi.org/10.18844/wjer.v14i2.9587.

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This study explores the influence of shell thickness on photocurrent density in polymer-based solar cells incorporating gold-silver (Au-Ag) and silver-gold (Ag-Au) metal-metal core-shell nanoparticles. Efficient light trapping and absorption in polymer solar cells remain a key challenge, necessitating innovative approaches to improve performance. Addressing this gap, the research investigates how variations in shell thickness impact the plasmonic enhancement of photocurrent density. Simulations reveal that increasing shell thickness initially boosts photocurrent density due to enhanced plasmon

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Beshr, M., E. Dexter, P. E. Tierney, A. D. Meade, S. Murphy, and G. Amarandei. "Towards plasmon mapping of SERS-active Ag dewetted nanostructures using SPELS." Journal of Physics: Conference Series 2172, no. 1 (2022): 012012. http://dx.doi.org/10.1088/1742-6596/2172/1/012012.

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Abstract Thermal dewetting of silver thin flm can lead to SERS-active Ag nanoparticles. Here, we report our progress towards using scanning probe energy loss spectroscopy (SPELS) to map the plasmonic behaviour of SERS-active Ag nanoparticles (NP) by investigating NPs produced through the dewetting study of Ag thin flms on SiO2/Si and Ti/SiO2/Si substrates. The nanoparticles size and spatial distribution were controlled by the deposition and thermal annealing parameters. The results of preliminary SPELS measurements of these structures, alongside SERS data show that there is a correlation betwe

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Linh, Vo, Xiaofei Xiao, Ho Jung, et al. "Compact Integration of TiO2 Nanoparticles into the Cross-Points of 3D Vertically Stacked Ag Nanowires for Plasmon-Enhanced Photocatalysis." Nanomaterials 9, no. 3 (2019): 468. http://dx.doi.org/10.3390/nano9030468.

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The compact integration of semiconductor TiO2 nanoparticles (NPs) into the 3D crossed region of stacked plasmonic Ag nanowires (NWs) enhanced the photocatalytic activities through synergistic effects between the strong localized surface plasmon resonance (LSPR) excitation at the 3D cross-points of the Ag NWs and the efficient hot electron transfer at the interface between the Ag NWs and the TiO2 NPs. This paper explored new hybrid nanostructures based on the selective assembly of TiO2 NPs onto 3D cross-points of vertically stacked Ag NWs. The assembled TiO2 NPs directly contacted the 3D Ag NWs

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Naya, Shin-ichi, Musashi Fujishima, and Hiroaki Tada. "Synthesis of Au–Ag Alloy Nanoparticle-Incorporated AgBr Crystals." Catalysts 9, no. 9 (2019): 745. http://dx.doi.org/10.3390/catal9090745.

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Nanoscale composites consisting of silver and silver halide (Ag–AgX, X = Cl, Br, I) have attracted much attention as a novel type of visible-light photocatalyst (the so-called plasmonic photocatalysts), for solar-to-chemical transformations. Support-free Au–Ag alloy nanoparticle-incorporated AgBr crystals (Au–Ag@AgBr) were synthesized by a photochemical method. At the initial step, Au ion-doped AgBr particles were prepared by adding an aqueous solution of AgNO3 to a mixed aqueous solution of KBr and HAuBr4. At the next step, UV-light illumination (λ = 365 nm) of a methanol suspension of the re

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Nugroho, Ferry Anggoro Ardy. "Fabrication and Characterization of Supported Porous Au Nanoparticles." Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika 9, no. 1 (2024): 1–12. https://doi.org/10.36312/e-saintika.v9i1.2427.

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Porous plasmonic nanoparticles offer unique advantages for sensing and catalysis due to their high surface-to-volume ratio and localized electromagnetic field enhancements at nanoscale pores, or “hotspots.” However, current fabrication techniques, which are based on colloidal synthesis, face challenges in achieving precise control over particle size, shape, and porosity. Here, we present a robust nanofabrication method to produce supported arrays of porous Au nanoparticles with excellent dimensional and compositional control. By combining lithographically patterned AuAg alloy nanoparticles and

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Mattox, Tracy, and Jeffrey Urban. "Tuning the Surface Plasmon Resonance of Lanthanum Hexaboride to Absorb Solar Heat: A Review." Materials 11, no. 12 (2018): 2473. http://dx.doi.org/10.3390/ma11122473.

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While traditional noble metal (Ag, Au, and Cu) nanoparticles are well known for their plasmonic properties, they typically only absorb in the ultraviolet and visible regions. The study of metal hexaborides, lanthanum hexaboride (LaB6) in particular, expands the available absorbance range of these metals well into the near-infrared. As a result, LaB6 has become a material of interest for its energy and heat absorption properties, most notably to those trying to absorb solar heat. Given the growing popularity of LaB6, this review focuses on the advances made in the past decade with respect to co

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Fernández-Martínez, Javier, Sol Carretero-Palacios, Pablo Molina, Jorge Bravo-Abad, Mariola O. Ramírez, and Luisa E. Bausá. "Silver Nanoparticle Chains for Ultra-Long-Range Plasmonic Waveguides for Nd3+ Fluorescence." Nanomaterials 12, no. 23 (2022): 4296. http://dx.doi.org/10.3390/nano12234296.

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Plasmonic waveguides have been shown to be a promising approach to confine and transport electromagnetic energy beyond the diffraction limit. However, ohmic losses generally prevent their integration at micrometric or millimetric scales. Here, we present a gain-compensated plasmonic waveguide based on the integration of linear chains of Ag nanoparticles on an optically active Nd3+-doped solid-state gain medium. By means of dual confocal fluorescence microscopy, we demonstrate long-range optical energy propagation due to the near-field coupling between the plasmonic nanostructures and the Nd3+

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Sakar, Mohan, Sivakumar Bharathkumar, Mohan Jayamani, Subramanian Balakumar, and N. Jaisankar Sellamuthu. "Silver plasmons sensitized photocatalytic activity of bismuth ferrite (BiFeO3 ) nanoparticles." Journal of Indian Chemical Society Vol. 92, May 2015 (2015): 732–35. https://doi.org/10.5281/zenodo.5703094.

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National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai-600 025, India <em>E-mail</em> : balasuga@yahoo.com Polymer Division, Central Leather Research Institute (CSIR), Adyar, Chennai-600 020, India Silver (Ag) plasmons sensitized bismuth ferrite (BiFeO<sub>3</sub> -BFO) hybrid nanoparticles were synthesized by solgel combined chemical reduction method. The synthesized Ag : BFO nano-hybrids was studied for their photocatalytic ability to degrade organic pollutant such as methylene blue under the sunlight exposure. The formation of Ag and BFO phase was confirmed by the

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Kornilova, Anastasiia V., Sergey M. Novikov, Galiya A. Kuralbayeva, et al. "Halloysite Nanotubes with Immobilized Plasmonic Nanoparticles for Biophotonic Applications." Applied Sciences 11, no. 10 (2021): 4565. http://dx.doi.org/10.3390/app11104565.

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Halloysite nanotubes (HNTs) with immobilized gold (Au) and silver (Ag) nanoparticles (NPs) belong to a class of nanocomposite materials whose physical properties and applications depend on the geometry of arrangements of the plasmonic nanoparticles on HNT’ surfaces. We explore HNTs:(Au, Ag)-NPs as potential nano-templates for surface-enhanced Raman scattering (SERS). The structure and plasmonic properties of nanocomposites based on HNTs and Au- and Ag-NPs are studied by means of the transmission electron microscopy and optical spectroscopy. The optical extinction spectra of aqueous suspensions

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Pan, Hanqing, and Michael D. Heagy. "Plasmon-enhanced photocatalysis: Ag/TiO2 nanocomposite for the photochemical reduction of bicarbonate to formic acid." MRS Advances 4, no. 07 (2019): 425–33. http://dx.doi.org/10.1557/adv.2018.677.

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ABSTRACTPlasmonic metallic nanoparticles can significantly enhance the catalytic efficiency of semiconductors via plasmonic photocatalysis. In this study, a hybrid Ag/TiO2 photocatalyst was synthesized and tested for the photochemical reduction of bicarbonate to value-added formic acid. It was found that under solar irradiation, TiO2 is not very efficient, but formate production is significantly increased with the addition of silver nanoparticles. Under 365 nm irradiation, the photocatalytic efficiency of TiO2 is enhanced, but no effect was observed with the addition of silver nanoparticles. U

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Sharapov, I., G. Omarova, A. Sadykova, and E. Seliverstova. "PROPERTIES OF Ag/TiO2 AND Ag/SiO2 NANOPARTICLES AND THEIR EFFECT ON THE PHOTOCATALYTIC PROPERTIES OF A SEMICONDUCTOR NANOCOMPOSITE." Eurasian Physical Technical Journal 22, no. 2 (52) (2025): 25–32. https://doi.org/10.31489/2025n2/25-32.

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The optical properties and the electric field distribution around silver nanoparticles coated with TiO2 or SiO2 shell have been studied. It is demonstrated that the presence of a shell around a plasmonic nanoparticle leads to a bathochromic shift in the maximum of its absorption band. The maximum electric field intensity around metal nanoparticles is radially concentrated, predominantly near the surface of the nanoparticles. The quantum efficiency, representing the ratio of emitted photons to absorbed photons, is nearly 50% higher for Ag/TiO2 nanoparticles compared to Ag/SiO2. In the presence

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Li, Xianglin, Zhiwei Wang, Chiew Tan, Zexiang Shen, and Alfred Tok. "Ordered Array of Metal Particles on Semishell Separated with Ultrathin Oxide: Fabrication and SERS Properties." Coatings 9, no. 1 (2018): 20. http://dx.doi.org/10.3390/coatings9010020.

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Metal particles in gap cavities provide an interesting system to achieve hybrid local surface plasmon modes for local field enhancement. Here, we demonstrate a relatively simple method to fabricate Ag nanoparticles positioned on Ag semishells separated by a thin (~5 nm) dielectric layer. The obtained structure can provide strong local electric field enhancement for surface-enhanced Raman scattering (SERS). The fabrication of the ordered array structure was realized by nanosphere self-assembly, atomic layer deposition, and metal thin-film dewetting. Numerical simulation proved that, compared to

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Hahm, Eunil, Ahla Jo, Sang Hun Lee, Homan Kang, Xuan-Hung Pham, and Bong-Hyun Jun. "Silica Shell Thickness-Dependent Fluorescence Properties of SiO2@Ag@SiO2@QDs Nanocomposites." International Journal of Molecular Sciences 23, no. 17 (2022): 10041. http://dx.doi.org/10.3390/ijms231710041.

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Silica shell coatings, which constitute important technology for nanoparticle (NP) developments, are utilized in many applications. The silica shell’s thickness greatly affects distance-dependent optical properties, such as metal-enhanced fluorescence (MEF) and fluorescence quenching in plasmonic nanocomposites. However, the precise control of silica-shell thicknesses has been mainly conducted on single metal NPs, and rarely on complex nanocomposites. In this study, silica shell-coated Ag nanoparticle-assembled silica nanoparticles (SiO2@Ag@SiO2), with finely controlled silica shell thicknesse

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Katsiaounis, Stavros, Julianna Panidi, Ioannis Koutselas, and Emmanuel Topoglidis. "Fully Reversible Electrically Induced Photochromic-Like Behaviour of Ag:TiO2 Thin Films." Coatings 10, no. 2 (2020): 130. http://dx.doi.org/10.3390/coatings10020130.

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A TiO2 thin film, prepared on fluorine-doped indium tin oxide (FTO)-coated glass substrate, from commercial off-the-shelf terpinol-based paste, was used to directly adsorb Ag plasmonic nanoparticles capped with polyvinylpyrollidone (PVP) coating. The TiO2 film was sintered before the surface entrapment of Ag nanoparticles. The composite was evaluated in terms of spectroelectrochemical measurements, cyclic voltammetry as well as structural methods such as scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). It was found that the Ag nanoparticle

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Rahman, Atta Ur, Junping Geng, Richard W. Ziolkowski, et al. "Photoluminescence Revealed Higher Order Plasmonic Resonance Modes and Their Unexpected Frequency Blue Shifts in Silver-Coated Silica Nanoparticle Antennas." Applied Sciences 9, no. 15 (2019): 3000. http://dx.doi.org/10.3390/app9153000.

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Higher order plasmonic resonance modes and their frequency blue shifts in silver-coated silica nanoparticle antennas are studied. Synthesizing them with a wet chemistry method, silica (SiO2) nanoparticles were enclosed within silver shells with different thicknesses. A size-dependent Drude model was used to model the plasmonic shells and their optical losses. Two higher order plasmonic resonances were identified for each case in these simulations. The photoluminescence spectroscopy (PL) experimental results, in good agreement with their simulated values, confirmed the presence of those two hig

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Singh, Y. Premkumar, Amit Jain, and Avinashi Kapoor. "Localized Surface Plasmons Enhanced Light Transmission into c-Silicon Solar Cells." Journal of Solar Energy 2013 (July 24, 2013): 1–6. http://dx.doi.org/10.1155/2013/584283.

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The paper investigates the light incoupling into c-Si solar cells due to the excitation of localized surface plasmon resonances in periodic metallic nanoparticles by finite-difference time-domain (FDTD) technique. A significant enhancement of AM1.5G solar radiation transmission has been demonstrated by depositing nanoparticles of various metals on the upper surface of a semi-infinite Si substrate. Plasmonic nanostructures located close to the cell surface can scatter incident light efficiently into the cell. Al nanoparticles were found to be superior to Ag, Cu, and Au nanoparticles due to the

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Ma, Ying, Liyiming Tao, Shi Bai, and Anming Hu. "Green Synthesis of Ag Nanoparticles for Plasmon-Assisted Photocatalytic Degradation of Methylene Blue." Catalysts 11, no. 12 (2021): 1499. http://dx.doi.org/10.3390/catal11121499.

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Green synthesis of metal nanoparticles has been gaining great interest due to the increasing need for eco-friendly manufacturing and application of nanomaterials. Metal nanoparticles, especially silver nanoparticles, are widely used in water treatments and as environmental remedy. Here we present a method to synthesize silver nanoparticles at room temperature using green tea extract under visible light irradiation, along with an application for enhanced photocatalytic degradation on methylene blue (MB) dye. Ag nanoparticles were synthesized under different photoreduction times and then further

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An, Yeongju, Sanghyuk Lee, Juneseo Park, Jaemin Ryu, and Sungju Yu. "Hot Carrier Generation and Extraction from Slow Photons." ECS Meeting Abstracts MA2024-02, no. 63 (2024): 5013. https://doi.org/10.1149/ma2024-02635013mtgabs.

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Plasmonic nanostructures, characterized by localized surface plasmon resonance (LSPR), facilitate strong interactions with light and induce collective oscillations of conduction band electrons on metal nanoparticle surfaces. This process enhances light absorption and promotes the generation of hot carriers. However, their energy conversion efficiency is often limited by challenges such as rapid charge recombination and restricted light absorption. We integrated Ag nanoparticles (NPs) with periodically ordered SrTiO3/TiO2 nanoarrays (NAs). These NAs create photonic stopbands, that were precisel

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Joshi, Hira, Siddharth Choudhary, and S. Annapoorni. "Composite Nanostructures for Enhanced Plasmonics." Materials Science Forum 950 (April 2019): 165–69. http://dx.doi.org/10.4028/www.scientific.net/msf.950.165.

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Enhancement in plasmonic response of metal nanoparticles in the form of metal/metal oxide nanocomposites is very interesting from both the theoretical understanding and application. Metal based oxide/Ag nanocomposites were synthesized by polyol process. Metal oxide nanoparticles present in nanocomposites as core and noble metal as a shell are of interest in investigation of plasmonic behavior of noble metals and sensing application. Cobalt ferrite (CoFe2O4) and ZnO were used as oxide core in the form of spherical and rod nanostructures respectively. Presence of Ag was confirmed by XRD and SEM

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Puišo, Judita, Valentinas Baltrušaitis, Algirdas Lazauskas, Asta Guobienė, Igoris Prosyčevas, and Pranas Narmontas. "Synthesis and Characterization of Silver-Poly(Methylmethacrylate) Nanocomposite." Key Engineering Materials 543 (March 2013): 80–83. http://dx.doi.org/10.4028/www.scientific.net/kem.543.80.

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Silver nanoparticles and polymethylmethacrylate (PMMA) nanocomposite was preparedin situby photo-induced thermal reduction method. The interfacial interaction of Ag nanoparticles and PMMA polymer is investigated using Fourier transform infrared spectroscopy (FTIR). Optical properties of Ag/PMMA films were characterized by UV-Vis and FTIR absorption spectroscopy. Effects of the UV and heat-treatment time on the formation of silver nanoparticles in PMMA matric matrix were studied in detail. These investigations proposed new nanocomposite structures. They can be defined as plasmonic materials wit

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Barbillon, Grégory. "Latest Novelties on Plasmonic and Non-Plasmonic Nanomaterials for SERS Sensing." Nanomaterials 10, no. 6 (2020): 1200. http://dx.doi.org/10.3390/nano10061200.

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An explosion in the production of substrates for surface enhanced Raman scattering (SERS) has occurred using novel designs of plasmonic nanostructures (e.g., nanoparticle self-assembly), new plasmonic materials such as bimetallic nanomaterials (e.g., Au/Ag) and hybrid nanomaterials (e.g., metal/semiconductor), and new non-plasmonic nanomaterials. The novel plasmonic nanomaterials can enable a better charge transfer or a better confinement of the electric field inducing a SERS enhancement by adjusting, for instance, the size, shape, spatial organization, nanoparticle self-assembly, and nature o

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Ali, Imran, Jun Chen, Saeed Ahmed Khan, et al. "Photothermal Hyperthermia Study of Ag/Ni and Ag/Fe Plasmonic Particles Synthesized Using Dual-Pulsed Laser." Magnetochemistry 9, no. 3 (2023): 59. http://dx.doi.org/10.3390/magnetochemistry9030059.

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Magneto-plasmonic Ag/Ni and Ag/Fe nanoparticles (NPs) were synthesized in this work using the environmentally safe and contaminant-free dual-pulsed Q-switched Nd:YAG 1064 nm laser ablation method. The optical and magnetic characteristics of synthesized nanomaterials were investigated using a vibrating sample magnetometer and an ultraviolet-visible absorption spectrometer. According to transmission electron microscopy (TEM), the shape of Ag/Ni and Ag/Fe NPs seems to be spherical, with mean diameters of 7.3 nm and 11.5 nm, respectively. X-ray diffraction (XRD) was used in order to investigate an

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Ma, Dongling. "(Invited) Towards Broadband Photocatalysis." ECS Meeting Abstracts MA2023-02, no. 47 (2023): 2372. http://dx.doi.org/10.1149/ma2023-02472372mtgabs.

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Forming nanomaterials junctions and using plasmons represent two important, promising strategies for realizing broadband photocalysis in strategically important applications such as solar fuels and photocatalytic degradation of pollutants. In this talk, I will present some of our recent work on the rational design of nanohybrids and their applications in solar fuels and photocatalysis. One example is about the in situ synthesis of plasmonic Ag nanoparticles (AgNPs) and Ag-MOF. The intimate and stable interface between the AgNPs and Ag-MOF and hot electron transfer from the plasmonic AgNPs to M

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Hajjiah, Ali, Ishac Kandas, and Nader Shehata. "Efficiency Enhancement of Perovskite Solar Cells with Plasmonic Nanoparticles: A Simulation Study." Materials 11, no. 9 (2018): 1626. http://dx.doi.org/10.3390/ma11091626.

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Recently, hybrid organic-inorganic perovskites have been extensively studied due to their promising optical properties with relatively low-cost and simple processing. However, the perovskite solar cells have some low optical absorption in the visible spectrum, especially around the red region. In this paper, an improvement of perovskite solar cell efficiency is studied via simulations through adding plasmonic nanoparticles (NPs) at the rear side of the solar cell. The plasmonic resonance wavelength is selected to be very close to the spectrum range of lower absorption of the perovskite: around

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Nagpal, Keshav, Erwan Rauwel, Frédérique Ducroquet, and Protima Rauwel. "Assessment of the optical and electrical properties of light-emitting diodes containing carbon-based nanostructures and plasmonic nanoparticles: a review." Beilstein Journal of Nanotechnology 12 (September 24, 2021): 1078–92. http://dx.doi.org/10.3762/bjnano.12.80.

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Light-emitting diodes (LED) are widely employed in display applications and lighting systems. Further research on LED that incorporates carbon nanostructures and metal nanoparticles exhibiting surface plasmon resonance has demonstrated a significant improvement in device performance. These devices offer lower turn-on voltages, higher external quantum efficiencies, and luminance. De facto, plasmonic nanoparticles, such as Au and Ag have boosted the luminance of red, green, and blue emissions. When combined with carbon nanostructures they additionally offer new possibilities towards lightweight

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