Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
We present first results from in situ characterization of NV-formation in single crystal diamonds following implantation of low energy nitrogen ions (7.7 keV), co-implantation of hydrogen, helium and carbon ions and in situ annealing. Diamond samples were implanted at room temperature or at a temperature of 780° C during the implantation steps. We find that dynamic annealing during co-implantation enhances NV-center formation by up to 25%.
Author: Huimin Liu Publisher: Elsevier ISBN: 0815516878 Category : Technology & Engineering Languages : en Pages : 207
Book Description
This book presents an updated, systematic review of the latest developments in diamond CVD processes, with emphasis on the nucleation and early growth of diamond CVD. The objective is to familiarize the reader with the scientific and engineering aspects of diamond CVD, and to provide experiences researchers, scientists, and engineers in academia and industry with the latest developments in this growing field.
Author: Ramon D. Diaz Publisher: ISBN: Category : Electronic dissertations Languages : en Pages : 314
Book Description
Diamond is a material known for its extraordinary optical, mechanical, thermal, and electrical properties. The ultra-low carrier density in intrinsic diamond makes it an extreme insulator, but it can be doped to achieve relatively high electrical conductivity. A wide band gap, high carrier saturation velocity, high dielectric strength, as well as the highest thermal conductivity of all materials, translate to figures of merit several orders of magnitude greater than silicon, making diamond stand out as the ultimate material for a new generation of electronic devices. The technology developed so far has not been able to take full advantage of this extreme potential because unlike Silicon, a straightforward method for producing large wafers of high-quality single crystal diamond has not yet been perfected.This investigation explores the production of large area diamond substrates based on Microwave Plasma-Assisted Chemical Vapor Deposition to grow a continuous layer of single crystal diamond across an array of individual diamond plates in a process known as the mosaic technique. The project addressed a set of challenges related to this mosaic tiling technique, including developing high precision lattice orientation measurements; establishing the process of modifying individual orientations by laser cutting and polishing adjustments; developing anew tile assembly structure and fabrication process; and establishing the growth conditions necessary for uniform single layer diamond homoepitaxy as an extension on previous work optimizing crystal quality and area enlargement by enhanced lateral growth. Several analysis techniques were developed as part of the investigation, such as Regional Etch Pit Density Analysis and two independent relative misorientation measurements based on X-Ray Topography and X-Ray Rocking Curve scans. Definitions for characterizing the observations have been settled, coining new terms and concepts such as three types of relative misorientation: Tilt, Torsion and Twist, and new metrics such as Aggregate Mosaicity and a formal definition of what constitutes a Mosaic Boundary. The necessary conditions to evaluate when mosaic boundaries are indistinguishable from single crystal regions have been determined. New software was developed in MATLAB to analyze these new types of measurement metrics and measurement methods.Thick samples were grown and produced with a total grown diamond thickness up to4mm. The grown diamond of the mosaic plate was characterized at different thicknesses and how the mosaic boundary spread and position behaved and could be controlled throughout the process was studied. A clear set of substrate preparation and growth parameters were identified and listed as necessary conditions for successful mosaic growth serving as a roadmap leading to large area single crystal diamond substrates. A process for the plate lift-off of diamond substrates via an ion implantation process followed by diamond growth and then electrochemical separation was investigated. Deposition parameters were refined to overcome known difficulties related to shallow implantations from low energy ion implantation of commercial providers. This lift-off process is a necessary final step in large area diamond plate fabrication, as the procedure is the only known reasonable way to produce large area plates with minimal material loss. Successful plate lift-off from low energy implantations performed by easily accessible commercial providers was demonstrated and this process will facilitate diamond plate production at industrial scales. Progress established throughout this study resulted in plates composed of 4 tiles grownup to 10mm x 10mm using this mosaic tiling technique.
Author: Jeson Chen Publisher: ISBN: Category : Languages : en Pages :
Book Description
To fully exploit the capability of NV centers in diamond as magnetic sensors and quantum bits, the optimum production recipe as well as the method to enhance its optical performance has been studied in this work. The NV centers in bulk diamond were prepared by ion implantation and electron irradiation, and the optimum dose and temperature are found by comparing its optical and magnetic performance both experimentally and theoretically. In addition, the enhancement of optical performance and size characterization of NV centers in nanodiamonds will be discussed in this work.
Author: A.M. Zaitsev Publisher: Springer Science & Business Media ISBN: 3662045486 Category : Science Languages : en Pages : 508
Book Description
This handbook is the most comprehensive compilation of data on the optical properties of diamond ever written. It presents a multitude of data previously for the first time in English. The author provides quick access to the most comprehensive information on all aspects of the field.
Author: A.A. Gippius Publisher: Elsevier ISBN: 0444596771 Category : Science Languages : en Pages : 392
Book Description
This volume addresses the burgeoning field of wide band gap materials. The 64 contributed and invited papers will do much to stimulate the well-justified ongoing work, both theoretical and experimental, in this area. The high standard of the papers attests to the significant progress that has been made in this field, as well as reporting on the challenging problems that still remain to be solved.
Author: Huan-Cheng Chang Publisher: John Wiley & Sons ISBN: 1119477085 Category : Science Languages : en Pages : 294
Book Description
The most comprehensive reference on fluorescent nanodiamond physical and chemical properties and contemporary applications Fluorescent nanodiamonds (FNDs) have drawn a great deal of attention over the past several years, and their applications and development potential are proving to be manifold and vast. The first and only book of its kind, Fluorescent Nanodiamonds is a comprehensive guide to the basic science and technical information needed to fully understand the fundamentals of FNDs and their potential applications across an array of domains. In demonstrating the importance of FNDs in biological applications, the authors bring together all relevant chemistry, physics, materials science and biology. Nanodiamonds are produced by powerful cataclysmic events such as explosions, volcanic eruptions and meteorite impacts. They also can be created in the lab by high-pressure high-temperature treatment of graphite or detonating an explosive in a reactor vessel. A single imperfection can give a nanodiamond a specific, isolated color center which allows it to function as a single, trapped atom. Much smaller than the thickness of a human hair, a nanodiamond can have a huge surface area that allows it to bond with a variety of other materials. Because of their non-toxicity, nanodiamonds may be useful in biomedical applications, such as drug delivery and gene therapy. The most comprehensive reference on a topic of rapidly increasing interest among academic and industrial researchers across an array of fields Includes numerous case studies and practical examples from many areas of research and industrial applications, as well as fascinating and instructive historical perspectives Each chapter addresses, in-depth, a single integral topic including the fundamental properties, synthesis, mechanisms and functionalisation of FNDs The first book published by the key patent holder with his research group in the field of FNDs Fluorescent Nanodiamonds is an important working resource for a broad range of scientists and engineers in industry and academia. It will also be a welcome reference for instructors in chemistry, physics, materials science, biology and related fields.
Author: Scott T. Alsid Publisher: ISBN: Category : Languages : en Pages : 125
Book Description
The nitrogen-vacancy (NV) center in diamond has emerged as a promising platform for high-sensitivity, vector magnetic field detection and high spatial resolution magnetic-field imaging due to its unique combination of optical and spin properties. NV diamond magnetometry has enabled a wide array of applications from the noninvasive measurement of a single neuron action potential to the mapping [mu]T-fields in [mu]m-size meteorite grains. To further improve the magnetic sensitivity of an ensemble NV magnetometer, the growth and processing of the host diamond must be taken into account. This thesis presents a systematic study of the effects of diamond processing on bulk chemical-vapor-deposition diamond. In particular, NV charge-state composition and spin decoherence times are measured for diamonds irradiated with 1 MeV electrons at doses of 1x1015-5x1019 e-/cm2 and thermally annealed at temperatures of 850°C and 1250°C. The study provides an optimal range for diamond processing and shows the quenching of the NV center at high irradiation dosage from the creation of additional vacancy-related defects.
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Author: 
Author: Huimin Liu
Author: Ramon D. Diaz
Author: Jeson Chen
Author: A.M. Zaitsev
Author: Murari Regmi
Author: A.A. Gippius
Author: Huan-Cheng Chang
Author: Scott T. Alsid