The PhD degree requires 90 credit hours of graduate study, 60 of these being beyond a master’s degree.
All PhD students must take and pass at least two graduate-level courses from their concentration area and at least one graduate-level course from each of the other two concentration areas. These four courses must be taken during the first year of study.
Students may petition to extend the time for completing these requirements. Part-time students and those with a non-ECE background may need additional time.
If a PhD student wishes to pursue a MS in electrical engineering, two additional courses will need to be taken for a total of 24 course credits.
The comprehensive examination, taken during the first year of study, is required for continuation in the PhD program.
For more information about program requirements see the Electrical and Computer Engineering Department Bulletin or talk to an advisor. For information about financial aid and applying to the PhD program, visit the apply to Rochester page.
Comprehensive Exam Requirements
All doctoral students must pass a PhD qualifying examination and submit a written PhD thesis proposal in their third to fourth year of full-time graduate study.
Students who pass the PhD qualifying examination will get thesis research assistance from the Faculty Thesis Advisory Committee. The student's research advisor serves as chair. The committee meets with the student at least once each year.
PhD concentrations and research areas are broken up into three overarching topics:
- Signal Processing and Communications
- Integrated Electronics and Computer Engineering
- Physical Electronics, Electron Magnetism, and Acoustics
Students will take two graduate-level classes in their chosen concentration area and at least one graduate-level course from each of the other two concentration areas. The specific courses will be selected by each individual student and their research advisor.
Biomedical Ultrasound and Biomedical Engineering
High-frequency sound (ultrasound) is used in many areas of medicine to obtain images of soft organs in the body. High-intensity ultrasound is used to destroy kidney and gallstones without surgery (lithotripsy).
Students in this program will conduct scientific investigations that focus on the interactions of ultrasonic energy with biological materials ranging from heart and liver tissues, to bones and gallstones. Students may also conduct research on the applications of ultrasonic contrast-producing agents similar to radiological contrast and tracer techniques.
The results from these efforts are used to improve or extend clinical applications of ultrasonic techniques, both in diagnosing diseases of the heart and liver, and in therapeutic users such as lithotripsy. This work is also used to set standards for exposure of patients during examination and to improve the application of high-intensity sound for therapy.
Signal and Image Processing and Communications
Students in this program can participate in a wide range of research including:
- Signal research on:
- Wide-band radar and sonar systems design
- Digital image and video processing
- Very low bitrate video compression
- Medical image processing
- Communications research on:
- Frequency hopping codes for multiple-access-spread-spectrum communications, designed to minimize interference in radar and sonar systems
- Digital image processing research on:
- Image enhancement and restoration
- Image segmentation/recognition
- Processing of magnetic resonance images
- Digital video processing research on:
- 2-D and 3-D motion estimation techniques
- Deformable motion analysis
- Stereoscopic image analysis
- Standards conversion and high-resolution image reconstruction
- Object-based methods for very low bitrate video compression
- Biomedical signal processing research on:
- Spectral analysis in one-, two-, and three-dimensional spaces
- Analysis and algorithms for computed tomography
- Inverse scattering techniques for imaging tissue characterization
VLS/IC Microelectronics and Computer Design
Students in this program work in a variety of VLS/IC microelectronics and computer design research areas. Some of the current research being conducted here at Rochester includes:
- Research in VLSI and CAE to address topics in integrated circuit design methodologies and automation.
- Specific system-oriented research including an analytical model for multi-access protocols with prioritized messages and distributed control architecture.
- Testability studies that explore operational parallelism in any testing process to determine the set of automated test procedures which minimizes the silicon area consumed by the built-in self-test structures.
- Applying VLSI design and analysis techniques to develop ultrafast superconducting digital integrated circuits.
- Designing and analyzing high performance VLSI-based digital and analog integrated circuits and their systems. Specifically, speed, area, and power dissipation tradeoffs are investigated in terms of application-specific constraints and their fundamental circuit level limitations.
Superconductivity and Solid-State Electronics
Students in this program work in a variety of superconductivity and solid-state electronics research areas. Some of the current research being conducted here at Rochester includes:
- Designing, fabricating, and testing ultrafast superconducting digital integrated circuits.
- Developing integrated circuits that can carry out digital signal processing and analog-to-digital conversion at unprecedented rates, using the new "single-flux quantum logic."
- Using picosecond electrical and optical pulses to probe the transient response of semiconducting and superconducting devices, such as Metal-Semiconductor-Metal (MSM) photodiodes and tunnel junctions.
- Implementing quantum computation, in which Josephson-junction based circuits may manipulate quantum superposition states to efficiently perform specialized computational tasks.
- Using concentrated high-temperature superconductivity to develop thin-film devices based on Y-Ba-Cu-O for applications including high-speed electronic interconnects, passive microwave circuits, high-frequency Josephson junctions, and optoelectronic hybrid and monolithic devices.
Information processing with optical pulses allows for high data rates than electronic signals. Optoelectronics research is focused on obtaining a detailed understanding of ultrafast phenomena and ultrafast nonlinearities in semiconductors and high-temperature superconductors, and at using silicon quantum dots and nanometer-size objects in optoelectronics and biosensing.
Students in this program work in a variety of optoelectronic research areas. Some of the current research being conducted here at Rochester includes:
- Using laser technology, solid-state physics, materials science, and device physics and engineering to design novel optoelectronic devices.
- Studying electron and hole thermalization and recombination in semiconductors and semiconductor quantum wells, and the optoelectronic properties of porous silicon, which unlike crystalline silicon emits light efficiently at room temperature.
- Determining response times using laser processing of Y-Ba-Cu-O epitaxial thin films into oxygen-rich (superconducting) and oxygen-poor (semiconducting) regions, together with pump-probe femtosecond reflectivity measurements.
Microelectromechanics and Electrostatics
Students in this program work in a variety of microelectromechanics and electrostatic research areas. Some of the current research being conducted here at Rochester includes:
- Developing small integrated sensors and transducers using microfabrication techniques developed for silicon microelectronic circuits.
- Exploring issues of noise and sensitivity in displacement sensors and accelerometers.
- Developing cryogenic electro-mechanical transducers and vacuum tunneling transducers sensitive to sub-Angstrom displacements.
- Researching particle electro-mechanical interactions exhibited by particles in the size range from 5 to 500 microns when electric or magnetic fields are present.
- Developing dielectrophoretic levitation techniques for investigating di-electric properties of individual metallic or dielectric particles or even biological cells.
- Researching the flow of powders and granular media under the influence of electric or magnetic fields.
- Investigating electrostatic hazards with the goal of preventing serious explosions that plague liquid and dry chemical and electronic production facilities.
- Developing a general model for predicting the relaxation and dissipation of electrical charge within insulating materials such as liquids and dry powders.
Students in this program work in a variety of acoustic research areas. Some of the current research topics here at Rochester include:
- Acoustic wave equation
- Plane, spherical, and cylindrical wave propagation
- Reflection and transmission at boundaries
- Normal modes
- Absorption and dispersion
- Radiation from points, spheres, cylinders, pistons, and arrays
- Nonlinear acoustics