81 research outputs found
Interpretation and modelling of dynamic-R-ON kinetics in GaN-on-Si HEMTs for mm-wave applications
No full textSurface State Spectrum of AlGaN/AlN/GaN Extracted From Static Equilibrium Electrostatics
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Surface State Spectrum of AlGaN/AlN/GaN Extracted From Static Equilibrium Electrostatics
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Constructing a Secure and Autonomous Infrastructure for Smart Cities
No full textThe rapid evolution of urban environments, propelled by advances in the Internet of Things (IoT) and autonomous vehicle technologies, has ushered in a new era of smart city infrastructure. This dissertation investigates four critical components that together form the backbone of a secure, efficient, and resilient urban digital ecosystem.
First, this dissertation develops a flexible access control technique for large-scale public IoT services to manage vast, interconnected networks securely, ensuring data integrity and user privacy.
Second, this dissertation proposes an AI-enabled efficient traffic scheduling for autonomous vehicles, which uses real-time decision-making to optimize routes, reduce congestion, and improve urban mobility.
Third, to mitigate the risks of data exposure in centralized systems, this work extends to a privacy-preserving model that trains locally while sharing statistical traffic data for global optimization, ensuring secure and efficient decentralized traffic management.
Finally, this dissertation proposes a neighborhood watch mechanism for attack detection and evacuation, which enhances intersection security by monitoring data for anomalies and triggering safety protocols to prevent cyber threats and system failures. These integrated solutions address critical challenges in modern urban environments.
This dissertation is organized around the synergistic integration of these research areas. By establishing a secure IoT framework, enhancing autonomous traffic scheduling through AI, provide scalable and privacy-preserving traffic optimization, and implementing robust intersection safety measures, this dissertation provides a holistic solution to the challenges facing modern smart cities and illustrates how a multi-faceted approach can drive forward the next generation of urban infrastructure
A defect characterization technique for the sidewall surface of Nano-ridge and Nanowire based Logic and RF technologies
No full textWe introduce a set of new characterization techniques for the direct defect analysis of the sidewall surfaces of Nano-ridge, Nanowire, and FinFET based devices, being used in current (and future) logic and RF technologies. We demonstrate the application of these techniques on GaAs mesa, Nano-ridge, and InGaAs nano-wire based PIN diodes where surface defect densities are difficult to extract currently. We show that a close match in extracted density, with both measured data and calibrated TCAD simulations of above device types, is achieved validating the applicability of the techniques
ESD HBM Discharge Model in RF GaN-on-Si (MIS)HEMTs
No full textsponsorship: This work was supported in part by the Ministry of Science and Technology (MOST), Taiwan, under Contract MOST 110-2622-8-009-017-TP1. (Ministry of Science and Technology (MOST), Taiwan|MOST 110-2622-8-009-017-TP1)status: Publishe
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