This book, the second of two volumes, describes heterostructures and optoelectronic devices made from GaN and ZnO nanowires. Over the last decade, the number of publications on GaN and ZnO nanowires has grown exponentially, in particular for their potential optical applications in LEDs, lasers, UV detectors or solar cells. So far, such applications are still in their infancy, which we analyze as being mostly due to a lack of understanding and control of the growth of nanowires and related heterostructures. Furthermore, dealing with two different but related semiconductors such as ZnO and GaN, but also with different chemical and physical synthesis methods, will bring valuable comparisons in order to gain a general approach for the growth of wide band gap nanowires applied to optical devices
Is a widening “skills gap” in science and math education threatening America’s future? That is the seminal question addressed in The U.S. Technology Skills Gap, a comprehensive 104-year review of math and science education in America. Some claim this “skills gap” is “equivalent to a permanent national recession” while others cite how the gap threatens America’s future economic, workforce employability and national security. This much is sure: America’s math and science skills gap is, or should be, an issue of concern for every business and information technology executive in the United States and The U.S Technology Skills Gap is the how-to-get involved guidebook for those executives laying out in a compelling chronologic format: The history of the science and math skills gap in America Explanation of why decades of astute warnings were ignored Inspiring examples of private company efforts to supplement public education A pragmatic 10-step action plan designed to solve the problem And a tantalizing theory of an obscure Japanese physicist that suggests America’s days as the global scientific leader are numbered Engaging and indispensable, The U.S. Technology Skills Gap is essential reading for those eager to see America remain a relevant global power in innovation and invention in the years ahead.