Download or read book Optical and Electrical Properties of Nitrogen written by Donald Burgess McNeill and published by . This book was released on 1937 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical and Electronic Properties of Nitrogen Containing III V Compounds written by Mustafa Gunes and published by . This book was released on 2010 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Structural Optical and Electrical Properties of Nitrogen doped Hydrogenated Amorphous Carbon written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Optical and Magnetic Properties of Nucleic acid and Components written by J Duchesne and published by Elsevier. This book was released on 2012-12-02 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physico-chemical Properties of Nucleic Acids, Volume I deals with the intrinsic properties of nucleic acids (macromolecules) and their components. This volume includes the analysis of different types of bindings or interactions mechanisms such as photodynamic and radiation effects and fluorescence. Nine chapters comprise this volume. A number of chapters in the beginning of this book emphasize purines and pyrimidines. Dipole moments and charge transfer interactions are some of the specific topics covered regarding purines and pyrimidines. The topic of nucleic acids and components is discussed in detail in the middle up to the last part of the book, wherein electrical properties and energy transfer are explored. Other aspects covered include developments in fluorescence; free radicals in aqueous solutions; and irradiated single crystals. This volume will cater to undergraduates and graduate students as well as to researchers in the major fields of biology, chemistry, and physics.

Download or read book A Study of the Structural Optical and Electrical Properties of Nitrogen doped Hydrogenated Amorphous Carbon written by Joanna Szurmak and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The first successfully n-doped a-C:H films grown from mixtures of CH$\sb4$ and N$\sb2$ using the dc saddle-field deposition method are presented. Film composition (IR, RBS) studies showed evidence of bonded nitrogen. A conductivity increase of two orders of magnitude over the control film conductivity characterized the f(N$\sb2)$ = 0.02 sample; the decrease of activation energy from a midgap level of 0.7 eV to 0.2 eV concurred. The activation energy change may be interpreted as a rise of the Fermi level towards the conduction band. Such a shift would be consistent with the introduction of nitrogen donor states below the conduction band edge. Significant conductivity and activation energy changes occurred only with low N concentration: films with N content above f(N$\sb2)$ = 0.02 showed conductivity saturation and a constant activation energy. The films may thus exhibit a "clean" band gap rarely found in a-C:H but important because of its potential for more efficient doping.

Download or read book The Optical Electrical and Explosive Properties of Azides and Nitrogen Iodide written by A. C. MacLaren and published by . This book was released on 1957 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Properties of Nitrogen Doped GaP written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optical Properties of Metals and Intermolecular Interactions Opticheskie Svoistva Metallov Mezhmolekulyarnoe Vzaimodeistvie written by D. V. Skobel tsyn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first part of this collection sets out the results of some experimental and theoretical investigations into the optical properties of nontransition metals. The extensive future pros pects of metal optics are indicated; the use of metal optics enables a whole series of import ant electron properties of metals to be determined. Results obtained by studying intermolecular forces (the hydrogen bond and van der Waals forces) using spectroscopic methods (Raman effect and infrared absorption) are presented in the second part. A method of studying the true absorption of the drop phase of a water cloud is described. Methods of increasing the dispersion of manufactured spectral instruments and constructing various infrared spectrometers are indicated. The publication is intended for scientific workers, graduates, and students concerned with problems of metal optics, the electron properties of metals, and molecular spectroscopy. v CONTENTS OPTICAL PROPERTIES OF NONTRANSITION METALS G. P. Motulevich Introduction .••.•......• " .................•.......••. 1 Chapter I. Method of the Kinetic Equation in Metal Optics........... 5 § 1. Kinetic equation for the infrared part of the spectrum •.•..•...•....••.••.. 5 § 2. Anomalous skin effect . • . . . . . . . . . • . • . . • . . . . • . . • • • • • . . . . • . . • . . . . . . 9 § 3. Normal skin effect • • . . . . . • . . . . • • . • . . . • • • . . . . . • . . . . .. . . 11 . . • . . . . . . § 4. Weakly anomalous skin effect. . . • • • • . . . . . . . . . . . . • • . . . . • . .. • . 13 . . . . . . .

Download or read book Electrical Properties and the Nature of Active Nitrogen written by Philip Anastassios Constantinides and published by . This book was released on 1927 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical and Optical Properties of Amorphous Germanium written by Alton Harold Clark and published by . This book was released on 1967 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical Optical and Defect Properties of Carbon doped Gallium Nitride Grown by Molecular beam Epitaxy written by Robert David Armitage and published by . This book was released on 2003 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrical and Optical Properties of Polyethylene Films Incorporated with Nitrogen and Silicon written by Seog-Hyeon Kim and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Properties of Nitrogen vacancy Centres in Nanodiamond written by Carlo Bradac and published by . This book was released on 2012 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond is unique. Whether mechanical, thermal, electrical or optical, its properties are within the most extreme compared to those of any other material. This, together with the fact that in the last fifty years the synthesis of artificial diamond has become a reality, makes it very attractive for engineering and technological purposes. The range of diamond-based applications is very diverse and, among the others, includes its use in mechanical machining, high-power high-frequency electronics and high transmissivity optics. -- Diamond is also host to a wide variety of crystallographic defects. Appropriately controlled, they can be used to tune the characteristics of the material, but even more interestingly they often possess attractive optical properties on their own. In particular, nitrogen-vacancy (NV) centres in diamond have been the subject of extensive study in the last few years. They possess unique room-temperature optical and spin properties which make them promising systems for solid-state qubits in quantum information technologies and for emerging applications in biotechnology, nanomedicine and high resolution magnetometry, such as drug delivery, fluorescent biomarking and spin imaging. -- This thesis is focused on NV centres in diamond. I first present an extensive review on diamond as a material, describing in detail its physical properties, the methods that have been developed to synthesise it and some of its possible applications. I then move the attention specifically to NV centres in nanodiamonds (NDs), i.e. diamond crystals in the nanometre size range (0-100 nm). They are a potential candidate for emerging technologies including high-resolution magnetometry and biomedical imaging. For these applications, specific material requirements, such as the small size of the diamond nanocrystals and the optical stability of the hosted NV centres, are crucial. The NV stability with respect to the nanodiamond size and surface is the central theme of this thesis. I analyse the optical behaviour of NV centres in nanodiamond while varying a number of key parameters such as size, surface termination and diamond origin. Based on the measurements, I conclude whether the nanodiamond size and the NV surface proximity are factors that must be taken into consideration in order to control the material and realise nanotechnologies based on NV centres in nanodiamonds.

Download or read book Electrical and Optical Properties of Polyethylene Films Incorporated with Nitrogen and Silicon microform written by Seog-Hyeon Kim and published by National Library of Canada. This book was released on 1987 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Epitaxial Growth and Optical Properties of Mg3N2 Zn3N2 and Alloys written by Peng Wu and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Zinc nitride and magnesium nitride are examples of the relatively unexplored II3V2 group of semiconductor materials. These materials have potential applications in the electronics industry due to their excellent optical and electrical properties. This study mainly focuses on the growth and characterization of the new semiconductor materials: zinc nitride, magnesium nitride, and their alloys. The (100) oriented zinc nitride thin films were grown on both (110) sapphire substrates and (100) MgO substrates by plasma-assisted molecular beam epitaxy (MBE). The typical growth rate is in the range of 0.02-0.06 nm/s, the growth temperature is in the range of 140-180 oC, and background nitrogen pressure is around 10-5 Torr. The growth process was monitored by in-situ: reflection high energy electron diffraction (RHEED) and optical reflectivity. The RHEED and X-ray diffraction patterns of the zinc nitride indicate that the film is a single crystal material. The in-situ optical reflectivity pattern of the zinc nitride shows interference oscillations, and these oscillations are damped out as the thickness increases. The reflectivity as a function of time was accurately simulated by an optical equation. The optical constants of the thin films, the growth rate, and the thickness were derived from the simulation of the in-situ reflectance. The X-ray diffraction shows that (400) oriented zinc nitride thin films were grown on both A-plane (110) sapphire substrates and (100) MgO substrates. Optical transmittance measurements were performed on the zinc nitride thin films. The spectrum of the zinc nitride transmittance indicates that zinc nitride has a high optical absorption in the visible light region. The absorption coefficient was calculated from the transmittance spectrum, and the optical band gap of the zinc nitride thin film was found to be 1.25-1.28 eV. Ellipsometry measurements suggested that the refractive index of zinc nitride is 2.3-2.7, and the extinction coefficient is ~0.5-0.7 in the energy range 1.5-3.0 eV. The electron transport measurement shows that the single crystal zinc nitride has a mobility as high as 395 cm2 /Vs. A plasma-assisted MBE system was employed for magnesium nitride growth. The growth temperature was in the range of 300-350 oC. RHEED and laser reflectivity were employed during growth. The RHEED and X-ray diffraction patterns indicated that the epilayers are single crystal films. The optical laser reflectivity was well fitted by a modified optical equation. The optical constants and growth rate were derived from the simulation. X-ray diffraction showed that (400) oriented single crystal magnesium nitride films were grown on (100) MgO substrates. The optical transmittance spectra show that the magnesium nitride has a high absorption below 500 nm. The calculated absorption coefficient is as high as 4x10-4 cm-1 in the range of ~2.5-3.0 eV. The optical band gap was estimated to be ~2.5 eV. Ellipsometry measurements showed that the refractive index of the magnesium nitride is 2.3-2.75 and the extinction coefficient is less than 0.3 in the energy range of 1.5-3.0 eV. Zinc nitride-magnesium nitride (Zn3-3xMg3xN2) alloys were grown on (100) YSZ substrates by sputtering. The bandgap ranged from 1.2 eV to 2.1 eV for Mg content x in the 0-0.59 range. One film with a bandgap of ~1.4 eV and Mg content of 0.18 has the relatively high mobility of 47 cm2 /Vs which was expected for photovoltaics application.

Download or read book Nitrogen Induced Modification of the Electronic Structure of Group III N V Alloys written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Incorporation of nitrogen in conventional III-V compound semiconductors to form III-N-V alloys leads to a splitting of the conduction band into two nonparabolic sub-bands. The splitting can be described in terms of an anticrossing interaction between a narrow band of localized nitrogen states and the extended conduction-band states of the semiconductor matrix. The downward shift of the lower sub-band edge is responsible for the N-induced reduction of the fundamental band-gap energy. The modification of the conduction-band structure profoundly affects the optical and electrical properties of the III-N-V alloys.

Download or read book Structural Optical and Electrical Properties of WOxNy Filmsdeposited by Reactive Dual Magnetron Sputtering written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin films of tungsten oxynitride were prepared by dual magnetron sputtering of tungsten using argon/oxygen/nitrogen gas mixtures with various nitrogen/oxygen ratios. The presence of even small amounts of oxygen had a great effect not only on the composition but on the structure of WOxNy films, as shown by Rutherford backscattering and x-ray diffraction, respectively. Significant incorporation of nitrogen occurred only when the nitrogen partial pressure exceeded 89 percent of the total reactive gas pressure. Sharp changes in the stoichiometry, deposition rate, room temperature resistivity, electrical activation energy and optical band gap were observed when the nitrogen/oxygen ratio was high. The deposition rate increased from 0.31 to 0.89 nm/s, the room temperature resistivity decreased from 1.65 x 108 to 1.82 x 10-2?cm, the electrical activation energy decreased from 0.97 to 0.067 eV, and the optical band gap decreased from 3.19 to 2.94 eV upon nitrogen incorporation into the films. WOxNy films were highly transparent as long as the nitrogen incorporation was low, and were brownish (absorbing) and partially reflecting as nitrogen incorporation became significant.