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Growth of High Permittivity Dielectrics by High Pressure Sputtering from Metallic Targets
This thesis describes the fabrication of metal-insulator-semiconductor (MIS) structures using very high permittivity dielectrics (based on rare earths) grown by high-pressure sputtering from metallic targets. It demonstrates the possibility of depositing high permittivity materials (GdScO3) by means of high pressure sputtering from metallic targets using in situ plasma oxidation on Si and indium phosphate (InP) substrates. The advantage of this system is the high working pressure, which causes the particles to undergo multiple collisions and become thermalized before reaching the substrate in a pure diffusion process, thus protecting the semiconductor surface from damage. This work presents ...
Near Infrared Detectors Based on Silicon Supersaturated with Transition Metals
This thesis makes a significant contribution to the development of cheaper Si-based Infrared detectors, operating at room temperature. In particular, the work is focused in the integration of the Ti supersaturated Si material into a CMOS Image Sensor route, the technology of choice for imaging nowadays due to its low-cost and high resolution. First, the material is fabricated using ion implantation of Ti atoms at high concentrations. Afterwards, the crystallinity is recovered by means of a pulsed laser process. The material is used to fabricate planar photodiodes, which are later characterized using current-voltage and quantum efficiency measurements. The prototypes showed improved sub-bandg...
Pueblos amazónicos
El territorio amazónico es uno de los territorios de la tierra con mayor diversidad cultural humana y el conocimiento que se tiene de esta diversidad humana suele ser -por lo general- bastante sesgado y estereotipado. ¿Quiénes son los pobladores de estas tierras? ¿Qué aspecto tienen y por qué? ¿En qué piensan? ¿Con qué sueñan?¿Qué les aterroriza?¿Qué anhelan?¿Cual es su futuro? Estos son una sucesión de interrogantes que intentaremos desvelar de la mano de unas singulares piezas provenientes de dos colecciones: la primera, la Colección de Etnología de América de la Universidad Complutense de Madrid, cuyos objetos tienen el gran valor de la solera histórica y, en segundo lugar, una modesta colección particular cuyos objetos están -sin embargo- cargados de historias de vida.
Solutions for the World's Biggest Problems
The world has many pressing problems. Thanks to the efforts of governments, NGOs, and individual activists there is no shortage of ideas for resolving them. However, even if all governments were willing to spend more money on solving the problems, we cannot do it all at once. We have to prioritize; and in order to do this we need a better sense of the costs and benefits of each 'solution'. This book offers a rigorous overview of twenty-three of the world's biggest problems relating to the environment, governance, economics, and health and population. Leading economists provide a short survey of the analysis and sketch out policy solutions for which they provide cost-benefit ratios. A unique feature is the provision of freely downloadable software which allows readers to make their own cost-benefit calculations for spending money to make the world a better place.
World Congress on Medical Physics and Biomedical Engineering 2018
This book (vol. 2) presents the proceedings of the IUPESM World Congress on Biomedical Engineering and Medical Physics, a triennially organized joint meeting of medical physicists, biomedical engineers and adjoining health care professionals. Besides the purely scientific and technological topics, the 2018 Congress will also focus on other aspects of professional involvement in health care, such as education and training, accreditation and certification, health technology assessment and patient safety. The IUPESM meeting is an important forum for medical physicists and biomedical engineers in medicine and healthcare learn and share knowledge, and discuss the latest research outcomes and technological advancements as well as new ideas in both medical physics and biomedical engineering field.
Land, as Far as the Eye Can See
For more than a century the history of the American Frontier, particularly the West, has been the speciality of the Arthur H. Clark Company. We publish new books, both interpretive and documentary, in small, high-quality editions for the collector, researcher, and library.
