Xem 1-17 trên 17 kết quả Photonic materials
  • The new emerging field of photonics has significantly attracted the interest of many societies, professionals and researchers around the world. The great importance of this field is due to its applicability and possible utilization in almost all scientific and industrial areas. This book presents some advanced research topics in photonics. It consists of 16 chapters organized into three sections: Integrated Photonics, Photonic Materials and Photonic Applications. It can be said that this book is a good contribution for paving the way for further innovations in photonic technology. ...

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  • Optoelectronics - Materials and Techniques is the first part of an edited anthology on the multifaceted areas of optoelectronics contributed by a selected group of authors including promising novices to experts in the field, where are discussed related materials and techniques. Photonics and optoelectronics are making an impact multiple times the semiconductor revolution made on the quality of our life.

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  • Generally the term photonic crystal refers to two dimensional (2-D) and three dimensional (3-D) structures. Using 2-D and 3-D photonic crystals it is possible to control the propagation of light at arbitrary angles of incidence and not only the light normally incident as is the case for conventional optical films. Further, using photonic crystals, it is possible to achieve optical functionality not possible using conventional optical materials. This book provides a complete overview about photonic crystals including properties, applications, approaches and methods for the study....

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  • In the recent decades, there has been a growing interest in micro- and nanotechnology. The advances in nanotechnology give rise to new applications and new types of materials with unique electromagnetic and mechanical properties. This book is devoted to the modern methods in electrodynamics and acoustics, which have been developed to describe wave propagation in these modern materials and nanodevices.

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  • Gamma rays were discovered by Villard more than a hundred years ago. Rutherford gave the name -rays to the electrically neutral radiation emitted by the naturally occurring radioactive materials. Gamma rays are electromagnetic radiation, photons, which arises due to energy changes in the nucleus. It does not appear as an independent form of radiation, but it follows  and β decay, in those cases when the newly created core of the offspring is found in the excited state.

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  • Optoelectronics - Devices and Applications is the second part of an edited anthology on the multifaceted areas of optoelectronics by a selected group of authors including promising novices to experts in the field, where are discussed design and fabrication of device structures and the underlying phenomena. Many of the optoelectronic and photonic effects are integrated into a vast array of devices and applications in numerous combinations, and more are in fast development.

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  • The study of quasi 1-dimensional (1d) semiconductor nano-crystals (so-called nanowires) represents the forefront of today’s solid state physics and technology.

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  • The second volume of the book concerns the characterization approach of photonic crystals, photonic crystal lasers, photonic crystal waveguides and plasmonics including the introduction of innovative systems and materials. Photonic crystal materials promises to enable all-optical computer circuits and could also be used to make ultra low-power light sources.

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  • Petti et al. Nanoscale Research Letters 2011, 6:371 http://www.nanoscalereslett.

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  • This book deal with the modern developing of microwave and millimeter wave technologies. The first chapter is aimed at describing the evolution of technological processes for the design of passive functions in millimetre-wave frequency range. From the results HR SOI seems to be a good candidate in the coming year to address both low cost and low power mass market CMOS digital and RF/ MMW applications.

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  • Architecture continually informs and is informed by its modes of representation and construction, perhaps never more so than now, when digital media and emerging technologies are rapidly expanding what we conceive to be formally, spatially, and materially possible. Digital fabrication, in particular, has spurred a design revolution, yielding a wealth of architectural invention and innovation. How designs use digital fabrication and material techniques to calibrate between virtual model and physical artifact is the subject of this book.

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  • Radiating junction devices - Khi có dòng thuận qua LED hoặc IRED, các photon được bức xạ từ diode junction do tái hợp điện tử và lỗ trống tại miền chuyển tiếp (junction). - Bước sóng photon là hàm của chuyển mức năng lượng xảy ra trong quá trình tái hợp. - Đa số linh kiện LED và IRED chế tạo từ các vật liệu trên cơ sở gallium.

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  • Advanced Materials and Technologies High-temperature superconductors (HTS), ferroelectrics, micromachining or microelectromechanical systems (MEMS), hybrid or monolithic microwave integrated circuits (MMIC), active filters, photonic bandgap (PBG) materials/structures, and low-temperature cofired ceramics (LTCC) are among recent advanced materials and technologies that have stimulated the rapid development of new microstrip and other filters.

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  • This book collects original and innovative research studies concerning modeling and simulation of physical systems in a very wide range of applications, encompassing micro-electro-mechanical systems, measurement instrumentations, catalytic reactors, biomechanical applications, biological and chemical sensors, magnetosensitive materials, silicon photonic devices, electronic devices, optical fibers, electro-microfluidic systems, composite materials, fuel cells, indoor air-conditioning systems, active magnetic levitation systems and more.

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  • Monte-Carlo modeling allows calculating the detector efficiency in gamma spectrometry of environmental samples with taking into consideration both the photon selfabsorption in sample itself and absorption in all other materials between the sample and the detector’s active part. In this paper, the peak efficiencies of the Hp Ge detector (GMX) for gammas at various energies (emitted isotropically from the standard disk source and volumetric source - environmental sample, in which the different radionuclides are present) ...

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  • Biophotonics is revolutionizing the field of medicine, biology and chemistry and creating a new breed of medical engineers while at the same time getting engineers a taste of medicine. From an engineer's perspective, biophotonics is the application of photonics - the technology of generating and harnessing packet of light energy called photons - to image, detect and manipulate biological materials. In biology the understanding of molecular mechanisms, function of proteins and molecules has seen great new advances.

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  • Diagnostic nuclear medicine began more than 50 years ago and has evolved into a major medical specialty. Its practitioners use low activity levels of radioactive materials in a safe way to gain information about health and disease. Small amounts of radioactive materials, known as radiopharmaceuticals, are intro- duced into the body by injection, swallowing, or inhalation. Different radiopharmaceuticals are used to study different parts of the body. These agents emit photons that can be detected externally by special cameras.

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