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Gallium Nitride Power Devices

Gallium Nitride Power Devices

GaN is considered the most promising material candidate in next-generation power device applications owing to its unique material properties for example bandgap high breakdown field and high electron mobility. Therefore GaN power device technologies are listed as the top priority to be developed in many countries including the United States the European Union Japan and China. This book presents a comprehensive overview of GaN power device technologies for example material growth property analysis device structure design fabrication process reliability failure analysis and packaging. It provides useful information to both students and researchers in academic and related industries working on GaN power devices. GaN wafer growth technology is from Enkris Semiconductor currently one of the leading players in commercial GaN wafers. Chapters 3 and 7 on the GaN transistor fabrication process and GaN vertical power devices are edited by Dr. Zhihong Liu who has been working on GaN devices for more than ten years. Chapters 2 and 5 on the characteristics of polarization effects and the original demonstration of AlGaN/GaN heterojunction field-effect transistors are written by researchers from Southwest Jiaotong University. Chapters 6 8 and 9 on surface passivation reliability and package technologies are edited by a group of researchers from the Southern University of Science and Technology of China. | Gallium Nitride Power Devices

GBP 139.00
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Physics and Future of Hurricanes

Physics and Future of Hurricanes

This monograph is about hurricanes prompted by a discovery that suggests they will become more powerful with global warming. It provides at a college physics level a basic understanding of hurricanes emphasizing the flow of energy into and out of these storms and as a textbook covers some material that might be taught in meteorology or atmospheric physics courses. The text is centered on a new discovery that is not in any existing textbook. Because of the new discovery the book is of immediate interest to all meteorologists. It turns out that hurricanes as revealed by the new discovery are usefully regarded as a separate phase of matter bringing in characteristic temperature dependences near their transitions. The role of phase change in understanding hurricanes brings in the 20th-century discoveries in theoretical physics relating to critical phenomena with non-intuitive values of the critical exponent β entering the formula P = const (T – Tc)β where P is a characteristic strength parameter or order parameter of the phase of matter appearing at Tc. According to the new discovery on hurricanes it appears that taking the wind velocity as the order parameter P the critical exponent is near 1/3. In a second discovery we find that a small correction to this value is brought in by the complicated physics of the renormalization group that earned K. G. Wilson the Nobel Prize in Physics in 1982. | Physics and Future of Hurricanes

GBP 53.99
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