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Photothermal Transduction Efficiencies of Plasmonic Group 4 Metal Nitride Nanocrystals
摘要： The photothermal transduction e?ciencies of group 4 metal nitrides, TiN, ZrN, and HfN, at λ = 850 nm are reported, and the performance of these materials is compared to an Au nanorod benchmark. Transition metal nitride nanocrystals with an average diameter of ～15 nm were prepared using a solid-state metathesis reaction. HfN exhibited the highest photothermal transduction e?ciency of 65%, followed by ZrN (58%) and TiN (49%), which were all higher than those of the commercially purchased Au nanorods (43%). Computational studies performed using a ?nite element method showed HfN and Au to have the lowest and highest scattering cross section, respectively, which could be a contributing factor to the e?ciency trends observed. Furthermore, the changes in temperature as a function of illumination intensity and solution concentration, as well as the cycling stability of the metal nitride solutions, were studied in detail.
关键词： nanocrystals,plasmonic,photothermal transduction,metal nitrides,Au nanorods
更新于2025-09-23 15:21:01
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Overview of Synthetic Methods to Prepare Plasmonic Transition Metal Nitride Nanoparticles
摘要： The search for new plasmonic materials that are low-cost, chemically and thermally stable, and exhibit low optical losses has garnered significant attention among researchers. Recently, metal nitrides have emerged as promising alternatives to conventional, noble metal based plasmonic materials such as Ag and Au. Many of the initial studies on metal nitrides have focused on computational prediction of the material plasmonic properties. In recent years, several synthetic methods have been developed, enabling empirical analysis. This review highlights synthetic techniques for the preparation of plasmonic metal nitride nanoparticles which are predominantly free-standing using solid-state and solid-gas phase reactions, non-thermal and arc plasma methods, and laser ablation. The physical properties of the nanoparticles such as shape, size, crystallinity, and optical response obtained with such synthetic methods are also summarized.
关键词： Plasmonics,nanoparticles,next-generation materials,transition metal nitrides,metamaterials
更新于2025-09-23 15:19:57