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Exciton-Plasmon Interactions in Metal-Semiconductor Nanostructures

2012-07
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Release : 2012-07
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Kind : eBook
Book Rating : 198/5 ( reviews)

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Book Synopsis Exciton-Plasmon Interactions in Metal-Semiconductor Nanostructures by : Yikuan Wang

Download or read book Exciton-Plasmon Interactions in Metal-Semiconductor Nanostructures written by Yikuan Wang. This book was released on 2012-07. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decades, the use of surface plasmons (SPs) of noble metal nano-particles to control light emission on the nanometer scale has increased rapidly, due to their field enhancement and other special properties. With this boom in physics, chemistry, biomedical science and engineering has also come a rise in the need for understanding the dynamics of light emission in these systems. Traditional photoluminescence spectrum only gives limited information on quantum dot emission under SP resonances. This book, therefore, uses modern Time-Correlated Single Photon Counting technique and other approaches to study SPs in nanoparticle arrays, and their effects on semiconductor quantum dot emission. The observed SP resonances in metal nano-disc arrays enhances the CdSe/ZnS (core/shell) quantum dot emission in a way that is dependent on dipole emission angle and photon polarization, which is fully explained by quantum electrodynamics. This fundamental finding could be used to control the light emission in plasmonic device applications.

Excition-plasmon Interactions in Hybrid Metal-semiconductor Nanostructures

2009 Cadmium selenide
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Release : 2009
Genre : Cadmium selenide
Kind : eBook
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Book Synopsis Excition-plasmon Interactions in Hybrid Metal-semiconductor Nanostructures by : Yikuan Wang

Download or read book Excition-plasmon Interactions in Hybrid Metal-semiconductor Nanostructures written by Yikuan Wang. This book was released on 2009. Available in PDF, EPUB and Kindle. Book excerpt:

Plasmonic Effects in Metal-semiconductor Nanostructures

2015 Science
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Release : 2015
Genre : Science
Kind : eBook
Book Rating : 313/5 ( reviews)

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Book Synopsis Plasmonic Effects in Metal-semiconductor Nanostructures by : Alexey A. Toropov

Download or read book Plasmonic Effects in Metal-semiconductor Nanostructures written by Alexey A. Toropov. This book was released on 2015. Available in PDF, EPUB and Kindle. Book excerpt: One of the most promising trends in modern nanophotonics is the employment of plasmonic effects in the engineering of advanced device nanostructures. This book implements the binocular vision of such a complex metal-semiconductor system, examining both the constituents and reviewing the characteristics of promising constructive materials.

Noble Metal-Metal Oxide Hybrid Nanoparticles

2018-10-11 Technology & Engineering
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Release : 2018-10-11
Genre : Technology & Engineering
Kind : eBook
Book Rating : 352/5 ( reviews)

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Book Synopsis Noble Metal-Metal Oxide Hybrid Nanoparticles by : Satyabrata Mohapatra

Download or read book Noble Metal-Metal Oxide Hybrid Nanoparticles written by Satyabrata Mohapatra. This book was released on 2018-10-11. Available in PDF, EPUB and Kindle. Book excerpt: Noble Metal-Metal Oxide Hybrid Nanoparticles: Fundamentals and Applications sets out concepts and emerging applications of hybrid nanoparticles in biomedicine, antibacterial, energy storage and electronics. The hybridization of noble metals (Gold, Silver, Palladium and Platinum) with metal-oxide nanoparticles exhibits superior features when compared to individual nanoparticles. In some cases, metal oxides act as semiconductors, such as nano zinc oxide or titanium oxide nanoparticles, where their hybridization with silver nanoparticles, enhanced significantly their photocatalytic efficiency. The book highlights how such nanomaterials are used for practical applications. Examines the properties of metal-metal oxide hybrid nanoparticles that make them so adaptable Explores the mechanisms by which nanoparticles interact with each other, showing how these can be exploited for practical applications Shows how metal oxide hybrid nanomaterials are used in a range of industry sectors, including energy, the environment and healthcare

Discrete Metal-semiconductor Nanoparticle Assemblies for Controlled Plasmon-exciton Coupling

2018
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Release : 2018
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Book Synopsis Discrete Metal-semiconductor Nanoparticle Assemblies for Controlled Plasmon-exciton Coupling by : Haixu Leng

Download or read book Discrete Metal-semiconductor Nanoparticle Assemblies for Controlled Plasmon-exciton Coupling written by Haixu Leng. This book was released on 2018. Available in PDF, EPUB and Kindle. Book excerpt: One of the reasons why nanoscience is so fascinating is that the size of the nano-systems is "just about right". They are large enough to have various complex properties, and at the same time they are small enough to be treated (calculated) by numerical methods. I studied the interaction between individual gold nanoparticles (in which plasmons are excited) and quantum dots (in which excitons are excited) experimentally and theoretically at the nanoscale. Coupling optical emitters (quantum dots) to plasmon resonances in metal nanostructures has long been investigated as a means to increase their spontaneous emission rates. This increased rate occurs for weak coupling between the emitter and plasmon; for intermediate coupling, a Fano resonance will be seen; under strong coupling, the system undergoes Rabi splitting into new, hybrid modes. To date, efforts at achieving strong coupling between plasmons and single emitters have mostly been studied in scattering measurements; however, Rabi splitting in the scattering spectrum is difficult to distinguish from the Fano interference, or induced transparency, that occurs at intermediate coupling strengths. Here, we report measurements of scattering and photoluminescence from individual coupled plasmon-emitter systems that consist of a single quantum dot in the gap between a gold nanoparticle and a silver film. Splitting of the modes in photoluminescence is a signature of the strong coupling effect. The measurements unambiguously demonstrated weak, intermediate, and strong coupling at room temperature. In a separate study, we found that the photoluminescence of a quantum dot splits into two modes as a nanometer-sized gold tip approaches the quantum dots on a gold substrate. The splitting in both cases was over 150 meV, which exceeded the plasmon cavity loss (definition of the strong coupling). These studies opened up the possibility of single-photon nonlinearities and other extreme light-matter interactions at the nanoscale at room temperature.

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