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Quantum Dots and Quantum Dot Molecules a Number Study

2017 Quantum dots
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Release : 2017
Genre : Quantum dots
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Quantum Dots and Quantum Dot Molecules a Number Study by : Daniel Shane Moore

Download or read book Quantum Dots and Quantum Dot Molecules a Number Study written by Daniel Shane Moore. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: Quantum dots (QDs) that are separated from each other by a small potential barrier can be connected by quantum tunneling. The electrons that tunnel between these quantum dots act in a similar manner to electrons in naturally occurring molecules, which is why coupled QDs are called QD molecules. I use the finite dfferences method to numerically calculate the energy levels and wave functions of electrons trapped in quantum dots and quantum dot molecules in the conduction band. The objective is to develop and test an accurate numerical method for the conduction band of various quantum dot systems. First, numerical energy levels and wave functions are compared to their analytical counterparts for two simple potentials.

Quantum Dot Molecules

2013-10-28 Technology & Engineering
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Release : 2013-10-28
Genre : Technology & Engineering
Kind : eBook
Book Rating : 309/5 ( reviews)

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Book Synopsis Quantum Dot Molecules by : Jiang Wu

Download or read book Quantum Dot Molecules written by Jiang Wu. This book was released on 2013-10-28. Available in PDF, EPUB and Kindle. Book excerpt: A quantum dot molecule (QDM) is composed of two or more closely spaced quantum dots or “artificial atoms.” In recent years, QDMs have received much attention as an emerging new artificial quantum system. The interesting and unique coupling and energy transfer processes between the “artificial atoms” could substantially extend the range of possible applications of quantum nanostructures. This book reviews recent advances in the exciting and rapidly growing field of QDMs via contributions from some of the most prominent researchers in this scientific community. The book explores many interesting topics such as the epitaxial growth of QDMs, spectroscopic characterization, and QDM transistors, and bridges between the fundamental physics of novel materials and device applications for future information technology. Both theoretical and experimental approaches are considered. Quantum Dot Molecules can be recommended for electrical engineering and materials science department courses on the science and design of advanced and future electronic and optoelectronic devices.

Quantum Dots

2005 Science
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Release : 2005
Genre : Science
Kind : eBook
Book Rating : 064/5 ( reviews)

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Book Synopsis Quantum Dots by : Peter A. Ling

Download or read book Quantum Dots written by Peter A. Ling. This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt: A quantum dot is a particle of matter so small that the addition or removal of an electron changes its properties in some useful way. All atoms are quantum dots, but multi-molecular combinations can have this characteristic. In biochemistry, quantum dots are called redox groups. In nanotechnology, they are called quantum bits or qubits. Quantum dots typically have dimensions measured in nanometers, where one nanometer is 10-9 meter or a millionth of a millimetre. The fields of biology, chemistry, computer science, and electronics are all of interest to researchers in nanotechnology. Other applications of quantum dots include nanomachines, neural networks, and high-density memory or storage media. Research is being carried out on nano-crystals, self-assembled dots, and gated structures. This book presents leading-edge research from around the world.

Semiconductor Quantum Dots

1993-05-28 Science
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Release : 1993-05-28
Genre : Science
Kind : eBook
Book Rating : 238/5 ( reviews)

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Book Synopsis Semiconductor Quantum Dots by : Ladislaus Alexander Banyai

Download or read book Semiconductor Quantum Dots written by Ladislaus Alexander Banyai. This book was released on 1993-05-28. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor Quantum Dots presents an overview of the background and recent developments in the rapidly growing field of ultrasmall semiconductor microcrystallites, in which the carrier confinement is sufficiently strong to allow only quantized states of the electrons and holes. The main emphasis of this book is the theoretical analysis of the confinement induced modifications of the optical and electronic properties of quantum dots in comparison with extended materials. The book develops the theoretical background material for the analysis of carrier quantum-confinement effects, introduces the different confinement regimes for relative or center-of-mass motion quantization of the electron-hole-pairs, and gives an overview of the best approximation schemes for each regime. A detailed discussion of the carrier states in quantum dots is presented and surface polarization instabilities are analyzed, leading to the self-trapping of carriers near the surface of the dots. The influence of spin-orbit coupling on the quantum-confined carrier states is discussed. The linear and nonlinear optical properties of small and large quantum dots are studied in detail and the influence of the quantum-dot size distribution in many realistic samples is outlined. Phonons in quantum dots as well as the influence of external electric or magnetic fields are also discussed. Last but not least the recent developments dealing with regular systems of quantum dots are also reviewed. All things included, this is an important piece of work on semiconductor quantum dots not to be dismissed by serious researchers and physicists.

Quantum Dots

2002-07-08 Technology & Engineering
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Release : 2002-07-08
Genre : Technology & Engineering
Kind : eBook
Book Rating : 798/5 ( reviews)

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Book Synopsis Quantum Dots by : Elena Borovitskaya

Download or read book Quantum Dots written by Elena Borovitskaya. This book was released on 2002-07-08. Available in PDF, EPUB and Kindle. Book excerpt: In this book, leading experts on quantum dot theory and technology provide comprehensive reviews of all aspects of quantum dot systems. The following topics are covered: (1) energy states in quantum dots, including the effects of strain and many-body effects; (2) self-assembly and self-ordering of quantum dots in semiconductor systems; (3) growth, structures, and optical properties of III-nitride quantum dots; (4) quantum dot lasers.

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