Vaishnavi Ranganathan

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An implantable miniaturized imaging device can be attractive in many clinical applications. They include automated, periodic, high-resolution monitoring of susceptible organs for early detection of an anomalous growth. In this paper, we propose an implantable ultrasonic imager capable of online high-resolution imaging of a region inside the body. A(More)
Clinicians generally agree that the most effective way to treat a malignant tumor within body organs is to detect it early. Currently, detection is mostly based on clinical diagnostics triggered by specific symptoms, which is often too late allowing the malignancy to reach an advanced stage. Automated high-resolution monitoring of body parts at regular(More)
Implantable neural recording and stimulation devices hold great promise in monitoring and treatment of neurological disorders, limb reanimation and, development of braincomputer interfaces among other applications. However, transcutaneous wires limit the lifetime of such devices and there is a need for self-contained fully implantable solutions. In this(More)
A computing platform that works under extreme conditions (> 250 ◦C and at radiation > 1 Mrad) can be attractive in a number of important application areas, including automotive, space and avionics. Nanoelectromechanical systems (NEMS) switches have emerged as promising candidates for computing in harsh environment. Designing reliable memory specifically(More)
High Intensity Focused Ultrasound (HIFU) is emerging as an accurate, noninvasive method for ablation of certain primary and metastatic tumors. Typically, ablation is performed with an external therapeutic transducer. However, external HIFU treatment suffers from limitations of low therapeutic efficiency for ablation of tumors, deep in internal organs such(More)
Wireless battery charging has been incorporated into an increasing number of commercial electronics with power requirements ranging from a few milliwatts to several hundred watts. With this growing number of deployed devices, there is a necessity to quickly locate and charge them individually. Conventional localization techniques either require intelligence(More)
Growing number of important application areas, including automotive and industrial applications as well as space, avionics, combustion engine, intelligent propulsion systems, and geo-thermal exploration require electronics that can work reliable at extreme conditions - in particular at a temperature > 250°C and at high radiation (1-30 Mrad), where(More)
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