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Dr. Liu has worked on the research projects related to microwave passive and active networks, RF circuit design, radio systems and networking, numerical computation of electromagnetic scattering and propagation, hardware and software design of ground-penetrating radar systems, electromagnetic tomography, microwave telecommunication systems, electrical properties of rocks, and well logging. He is a member of Research Management Committee of Texas Department of Transportation. Dr. Liu is also an active member of the Institute of Electrical and Electronic Engineers (IEEE), Environmental and Engineering Geophysics Society (EEGS), and Society of Professional Well Logging Analysts (SPWLA).
Research Areas
- Sensor technology
- Sensor physics
- Electromagnetic based sensors
- Laser distance sensors
- Moisture sensor
- MEMS sensors
- Sensor networking
- Subsurface detection and sensing
- Ground penetrating radar system hardware
- Ground penetrating radar simulation and data inversion
- Ultra-wide band antenna for GPR systems (air launched and ground coupled)
- Pulsed and FMCW ground penetrating radar
- Application of GPR system for surface, shallow and deep investigation in pavements
- Borehore radar
- Laser surface profiling
- Surface texture measurement systems (micro and macro textures)
- Scanning laser surface profiling
- Well logging
- Simulation of induction, lateral, and LWD logging tools
- Inversion of logging data
- Electromagnetic tomography
- DC electrode tools
- Rock physics and mixing laws (Archie's law, Bergman-Milton simple pole theory, and self-similar models)
- Measurement methods of electrical properties of rocks
- Through casing resistivity logging tools (simulation, hardware, and data interpretation)
- Tool response to anisotropic formations, and multi-component induction tools
- Physical scale modeling
- Pulsed electromagnetic logging tools (simulation, and hardware)
- Telemetry system for MWD tools
- Wired and wireless communications
- Digital data telemetry systems
- Wireless telemetry protocols
- Spread spectrum radios
- Radio hardware (radio system, RF circuit design, simulation, and implementation)
- Radio networking (protocol design and implementation)
- Broadband over power line (system planning, and survey instrumentation)
- RFID and RFID reader (protocols, circuit design and system set up)
- Microwave and RF circuit design
- RF power amplifier design
- Microwave system design
- RF front end design for radio and RF communication systems
- Biomedical applications
- Wireless data telemetry for medial applications
- Simulation and computation of electromagnetic biosensors
- MEMS radio for biomedical research
Teaching Areas
- Sensor Technology and Applications, (ECE6301, Originated)
- Circuits and Devices in Telecommunication Systems (ECE 7397, Originated)
- Wireless Telecommunication Systems (ECE6332, Originated)
- Subsurface Sensing Technologies (ECE7397, Originated)
- Well Logging and Subsurface Sensing Methods, (ECE7397, Originated)
- Engineering Mathematics (ECE6382)
- Electronics Lab (ECE2100)
- Signals and Communications (ECE6330/5376)
- Microwave Theory and Technology
- Microwave Experiments
- Networks I (ECE2300)
- Introduction to Electric Circuits and Systems (ECE2336)
- Electrical Engineering Analysis I (ECE3337)
- Engineering Analysis II (EE3338)
- Automatic Control and System Theory (ECE4375)
- Electromagnetics (ECE4337)
- Electromagnetics (ECE4338)
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