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Terahertz quantum-well photodetectors (QWPs) represent a new and emerging photon-type detector in a terahertz region. Recent progress in the development of terahertz QWPs is reviewed. We first discuss the many-particle effects on the accurate design of terahertz QWPs. Second, three types of light couplers for terahertz QWPs are introduced. At resonant coupling frequencies, the polarization of light...
Terahertz (THz) semiconductor quantum devices and their applications to communication and imaging have been introduced. An ensemble Monte Carlo model is used to analyze the carrier transport and output characteristics of the THz quantum cascade laser (QCL). A THz quantum-well photodetector (QWP) has been used to characterize the emission spectrum of the THz QCL. We demonstrate the transmission of...
This paper reports the micro-power telemetry unit that can sense pressure, humidity, and bio-potentials, for the study of micro-package techniques for implantable biomedical micro-systems used in research, diagnosis and therapy. The micro-package study is aimed to develop and demonstrate the micro-package technology for micro-implants to have an implant life of 0.2 to 2.0 years. The telemetry device...
Condition monitoring plays an increasingly important role in the asset management of the electricity transmission infrastructure. More accurate tracking of the plant health could be achieved through the addition of more sensors. The installation or operating costs of more sensors could outweigh the benefits they bring due to the requirement for new cabling or battery maintenance respectively. The...
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