Overview
Our research is targeted at the design, fabrication, and characterization of futuristic micro/nano mechatronic sensing and actuation systems and applying them to create breakthrough scientific discoveries in physics and engineering.
We are continuously innovating new fabrication methods from robust materials. We search for alternate and cost-effective fabrication methods to develop novel sensing systems.
Microelectromechanical Systems (MEMS) Based Inertial Sensors
The rapid development of micro-fabrication technology is allowing both academia and industry to pursue the mass fabrication of high-precision navigation-grade motion sensing. The technology once considered exclusively for aerospace navigation, is now being regarded as within reach for a range of day-to-day motion sensing applications such as smartphones, cameras, and gaming consoles. This research project searches for an innovative design, fabrication, and packaging prospect for MEMS based ultra-precision inertial sensors (gyroscopes and accelerometers) with robust mechanical materials that have never been explored before in MEMS.
Inertial Measurement Unit (IMU) based Navigation
There is a need for effective, standalone, indoor navigation devices that not only track users in unknown environments but also assist their navigation through obstacle avoidance and guidance. This project is developing a state-of-the-art stand-alone and portable navigation system by implementing improved and effective pedestrian inertial navigation algorithms in combination with environmental mapping in unknown environments. It offers an efficient alternative compared to the existing systems with greater functionality in dark, visually restricted environments, where this type of navigation system could prove the most powerful.
Wearable Multi-Sensor Platform for Biophysical Monitoring
Wearable inertial sensors play a crucial role in biophysical monitoring, providing valuable data for healthcare, sports, wellness, and research applications. In this research, we are developing novel sensing systems and multi-sensor fusion methodologies into one device with wired and wireless connectivity to track and analyze various aspects of a person's physical activity and physiology. The wearable multi-sensor platform that we are developing holds immense potential to revolutionize healthcare and individual lifestyles. By continuously monitoring vital signs, physical activity, sleep patterns, sports activities, and mental health indicators, these wearables empower users to proactively manage their health. They enable early detection of medical issues, better management of chronic diseases, and personalized fitness and wellness guidance.
Quantum dot sensing system
Quantum dots (QDs) exhibit unique electrical, optical, and mechanical properties due to their size-dependent quantum confinement effects. We are harnessing these unique characteristics of QDs to design and develop highly sensitive sensors with novel applications in temperature, pressure, force, and inertial sensing. We are developing novel synthesis, fabrication, and device architectures. The project also involves developing micro-to-quantum fabrication processes.
Ultra-low Damping and Temperature Stable MEMS
MEMS inertial sensor employs a resonating mass (resonator) to detect changes in motion which is the central element of the gyroscope. Energy loss of the MEMS resonator is the primary barrier to achieving navigation-grade precision. Predicting the resonator's vibration characteristics (damping, stability, immunity to external vibration, and energy dissipation) is critical for minimizing energy loss. Our group is developing a new generation of MEMS resonators that are adaptable to the mass fabrication process with an optimum design derived from robust mechanical materials.
Microthermaling system for EV batteries
Rechargeable Lithium-ion (Li-ion) batteries are considered the electric heart within the electrification sector. It is essential that Li-ion batteries operate reliably and safely. One of the fundamental requirements for safe and reliable operation is real-time temperature monitoring of the battery. An effective battery management system (BMS) ensures proper thermal management, but it relies on accurate temperature sensing during all operating states. In situ, temperature sensing inside each cell is therefore of paramount importance for proper BMS. We are developing highly stable, flexible, and high-accuracy in situ temperature sensors that can be placed inside the battery pack for a complete real-time 3D map of the thermal state.
Reconfigurable Lab-on-a-chip (LOC)
LOC has been showing tremendous interest in biochemical and point-of-care applications by offering on-chip laboratory functions via a series of fluidic systems. LOC fabrications are primarily relying on 2D lithography-based methods. 3D printing in LOC fabrication is emerging as an easily accessible and cost-effective alternative. Current 3D-printed LOC devices require coupling with external fluid pumping (e.g. syringe pump) for fluid handling. We develop 3D printed LOC by eliminating the use of external power and pumps thus making it suitable for portable point-of-care (POC) testing. It is eco-friendly, disposable, and re-configurable to facilitate the development of the next generation of self-powered, portable, configurable, and disposable lab-on-a-chip.
Wearable Lab-on-a-chip (LOC)
Lab-on-a-chip provides an innovative way to perform complex scientific procedures while reducing experimental time, cost, and chemical waste. Our group is pursuing wearable LOC device development that has the potential for a wide variety of applications. A benefit of the technology is that it could avoid the use of multiple and sometimes invasive methods for detection. Our goal is to eliminate the ambiguity and invasive nature of the current testing measures and provide an effective point-of-care and personal health and wellness monitoring alternate.