Wireless Power Transfer

Liquid Interrogator for Security Application

Souvik Dubey

Flexible Implant Antenna for Thermotherapeutic Cancer Treatment

Clinical studies have shown that spinal or cortical neuro-stimulation could significantly improve pain relief. The currently available stimulators, however, are used only to generate specific electrical signals without the knowledge of physiologically responses caused from the stimulation. We thus propose a new system that can adaptively generate the optimized stimulating signals base on the correlated neuron activities. This new method could significantly improve the efficiency of neurostimulation for pain relief.

Chronic Pain Management

Gastroparesis is one of the severe digestive disease where patients loses their ability to transfer semi-digested food from stomach to intestine. Consequently, nausea, abdominal bloating, pain and malnutrition leads to severe suffering. Unfortunately, pro-kinetic and anti-emetic drugs are not very useful for chronic symptoms. Currently we are developing a flexible wireless powered implantable gastric stimulator device which will be placed inside stomach by endoscopic process and stimulate patients stomach so that they can enjoy the delicious food again. To know more please download my BioWireless presentation from here.

Flexible Miniature Gastric Stimulator

Research Scholar

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In this project a low cost novel flexible pH sensor was fabricated and characterized. The working electrodes were fabricated by sol-gel deposition and thermal oxidation of iridium chloride on a flexible polyimide film patterned with gold and tested along with fabricated silver/silver-chloride reference electrodes to measure pH for biomedical and industrial applications. The fabricated sensors outperformed the commercial sensor in stabilization times and lower fluctuation voltages.

Iridium Oxide Micro Ph Sensors

Radiation therapy and hyperthermia are two common procedures along with chemotherapy in current clinical practices to treat different type of cancers. Chemotherapy causes harmful and painful effects to patients and is usually considered for the last resort. Use of radiation therapy can lead to serious long-term side effects. On the contrary, hyperthermia treatment does not involve harmful radioactive radiation, and can be applied by several methods. One of the most common method is microwave tumor ablation, where a tumor is identified with imaging guidance and exposed to microwave energy by a thin microwave antenna placed into the tumor through surgical operation. The electromagnetic energy radiated by microwave source agitates the polar water molecules trapped in the tissues, which produces heat due to friction between the molecules. The major shortcoming of this approach is patient needs to undergo multiple surgeries to insert the microwave antenna probe into the tumor for every treatment. The proposed research will develop a new method for hyperthermia treatment using minimally invasive surgery. The aim of the research focuses on a study and development of biodegradable miniature flexible implant design to receive microwave energy for hyperthermia.

Due to potential threat of terrorist activities, identification of flammable and explosive liquids in airports and other public places has become a major concern. The bottles filled with unknown liquids imposes critical threat since it is challenging to detect the liquid with the conventional x-ray technique. On the other hand opening the bottle for identification of the liquids causes major delay and inconvenience to the passengers. Specially, opening the bottle in a crowd imposes significant threat of contamination for mothers carrying milk for their babies. In this work we demonstrated noninvasive liquid identification through a plastic bottle by measuring reflection parameters of a single layer solenoid resonator. The multiple resonance null point locations of the resonator were used as signatures for various liquids. A database has been created based on repeated data acquisition and unknown liquids are identified by comparing signatures stored in database.