Wireless Chemical and Biological Sensors
We are developing a wireless sensing platform for environmental monitoring and detection that prohibits the use of wires. We exploit the use of resonant circuits for chemical and biological sensing and detection. These sensors are used with low power wireless circuits to form a sensing network. We have developed microwave carbon nanotube sensors for chemical detection and quartz crystal microbalances coated with NDA for biological sensing. Our recent activities include:
- Development of chemical sensors for biogas in emerging energy systems
- Development of miniaturized antennas
- Microwave carbon nanotube resonator sensors [PDF]
- Wireless Interfaces for Implantable Devices [PDF]
- We are developing techniques and integrated circuits to increase efficiency of power transfer through tissue to area-constrained implanted antennae, thus enabling the next generation of implantable medical devices. Our work focuses on determining optimal frequencies, developing efficiency power amplifiers and rectifiers, estimating the location of implanted devices through back scattered radiation and directing power towards that location. Furthermore we are investigating both bi-directional data modulation on GHz power carriers and low power long range MICS band implanted transmitters.