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Research Areas

Implantable Electrode, for collecting brain neural signals. Karen Cheung.

Circuits of the Future? Crossed single-walled carbon nanotubes. Dr. Alireza Nojeh.

Micromotors and Sensors: Mechanical parts are etched in silicon. Dr. Edmond Cretu.

Research in our group is in areas:


Research projects:


Design, Modeling and Integration of High Sensitive Accelerometers with Adaptive and Non-Linear Control Targeted on FPGA

The countless number of applications urged a demand for high performance micro-accelerometers, which in turn continue to gain momentum. Within that framework, one must justify the need for an approach defined by a system level performance in closed loop integration, by understanding the current performance limitations in the state-of-the-art micro-accelerometers, in research, on the market, and when employed with other electrical components.

A Systematic Study of Silicon Germanium Interdiffusion for Next Generation Semiconductor Devices

We systematically study SiGe interdiffusion: 1) we established a unified interdiffusivity model for SiGe interdiffusion under relaxed or tensile strain over the full Ge content range from experimental data and diffusion theories. 2) We will investigate the impact of compressive strain on SiGe interdiffusion in middle to high Ge range. 3) We will study how interdiffusion depends on different dopants and doping levels.

Batteries and Supercapacitors

High energy density, high power and long cycle life are all properties that are needed in portable energy sources, particularly for emerging electric vehicles, and multifunctional hand-held devices. We are investigating new materials for use in these electrochemical storage devices with the aim of dramatically improving all aspects of performance. We are also creating printed energy storage devices for use in smart packaging, RFIDs and the like.

Photoacoustic Tissue Imaging

This project aims to design a photoacoustic imaging system for prostate cancer study. Images will be acquired by using a laser to excite acoustic waves from tissues and an ultrasound transducer array to detect the acoustic waves. The photoacoustic imaging will be combined with ultrasound imaging to study prostate cancer.

Optical Antennas

In nanoscale optical devices, both the particle and the wave nature of light can play important roles. This creates new opportunities for engineering the optoelectronic properties, for instance the amount of light absorption in a device.

Modeling and Simulation

We use techniques ranging from classical, continuum modeling, to molecular dynamics, to quantum mechanical simulations using the density functional theory and first-principles techniques such as the Hartree-Fock method. We investigate the mechanical properties, electronic structure, transport characteristics and optical properties of nanodevices.

Microfluidic electrochemical sensors for early detection of prostate cancer

By integrating multiple molecular biology assay steps on a single microfluidic platform, we aim to detect the activity of telomerase, an enzyme upregulated in prostate cancer cells. This will hopefully provide detection of prostate cancer than currently possible, and demonstrate better specificity for cancer than prostate-specific antigen (PSA) tests.

Controlled Nanofabrication

A significant challenge in research on nanostructures is the lack of sufficient control over the fabrication processes. Therefore, an important aspect of our research is the study of nanostructure fabrication processes with the goal of achieving higher levels of control and reproducibility.

Micromirror array for adaptive optics

The objective of this project is to build an adaptive micro-optical systems using a 2D micromirror array adaptively controlled through digital signal processing algorithms implemented in reconfigurable hardware (FPGA)

Inkjet patterning of mammalian cells

Inkjet patterning of mammalian cells

Batch-Mode Micro-Electro-Discharge Machining

Place your abstract here...

Angular rate sensors for Automobile and Biological projects

Gyroscopes are used to sense angular rate and when used along with accelerometers can be used as effective navigation sensors. Due to their tiny size(1cmx1cm)die and high sensitivity they could be used in minimally invasive surgery.
Modal Analysis

Ultrasound imaging using CMUT

CMUT arrays promise a new generation of ultrasound imaging systems, with applications in 3D and 4D (real-time 3D) non-invasive imaging or high-frequency imaging (ultrasound biomicroscopy). The project targets the development of a portable CMUT-based ultrasound imaging system, to be used for breast cancer detection and monitoring.

Reversible cell trapping in microfluidic channels using hydrogels

Reversible cell trapping in microfluidic channels using hydrogels

Organic Transistors

Application of printing methods in producing organic transistors has promised low-cost electronics, but a printed transistor has a poor performance due to the thick semiconductor layer. Also, most of organic transistors operate at high voltages (> 40V). We are investigating two types of organic transistors, OMESFET and dual gate transistor, to overcome the voltage problem and enhance the performance in a thick film transistor.

Microflow control technology

We are developing technology for microflow control that is suitable for portable low-cost instruments. Building blocks are fully integratable devices including microvalves, micropumps and micromixers. Concerns are low power consumption, fast response time and low cost.

MEMS microscanning lens

A magnetically actuated MEMS scanner with a microfabricated ferromagnetic nickel platform and thermosetting polydimethylsiloxane (PDMS) microlens is demonstrated. The device is driven by an external AC magnetic field, eliminating chip circuitry and thermal deformation from joule heating. The resonant frequency of 215.2 Hz and scanning angle of 23 of the scanner have been demonstrated.

Thermal Modulation of Microchannel Widths

We develop methods for thermal modulation of the widths of microchannels during operation of microfluidic devices. This allows arbitrary modulation of the channel width after device fabrication so that flow rate and flow velocity can be set independently.
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