Roya Maboudian (Advisor)

Research Advised by Professor Roya Maboudian

Material Synthesis and Characterization for Micro-supercapacitor Applications

Benjamin Hsia
Roya Maboudian
David B. Graves
Liwei Lin

Supercapacitors represent a critical energy storage device technology for applications which require higher power density and/or cycle lifetime than existing battery technologies. Micro-scale supercapacitors, in particular, can enable novel applications in autonomous, wireless microsensors and microelectronics. If these micro-supercapacitors can be fabricated in a planar, on-chip geometry, the energy storage and the ...

Fabrication and Characterization of Gecko-inspired Fibrillar Adhesive

Yongkwan Kim
Roya Maboudian
David B. Graves
Ali Javey
Over the last decade, geckos remarkable ability to stick to and climb surfaces found in nature has motivated a wide range of scientific interest in engineering gecko-mimetic surface for various adhesive and high friction applications. The high adhesion and friction of its pads have been attributed to a complex array of hairy structures, which maximize surface area for van der Waals interaction between the toes and the count...

Electrochemical Approaches to Renewable Energy

Peter Lobaccaro
Joel Ager
Roya Maboudian
Alexis Bell
Ali Javey
Renewable energy is becoming an increasingly important component of the world’s energy supply as the threat of global warming continues to rise. There is a need to reduce the cost of this renewable energy and a future challenge to deal with the strain intermittent power sources like renewables place on the power grid. In this dissertation, electrochemistry is harnessed to address possible solutions to both of these issues. First, it is used to develop a low...

Surface Treatments for Adhesion Reduction in Polysilicon Micromechanical Devices

Michael Robert Houston
Roya Maboudian
Roger T. Howe
David B. Graves
This work investigates the interactions between polysilicon surfaces for the purpose of alleviating the strong interfacial adhesion present between contacting microstructure sufaces, a problem referred to as stiction. Without specifically-designed...

BPN954: Quantum Dots Based High-performance Gas Sensors

Sikai Zhao

In recent years, the demands for high-performance gas sensors are rapidly increasing in many fields including environmental monitoring, public health and security, medical diagnostics, and industrial process monitoring. Among various types of gas sensors, the resistive metal-oxide-semiconductors (MOS) are very attractive and widely applied due to their high sensitivity, low cost, facile operation, and high compatibility with microfabrication processes. The working principle of such gas sensors is based on the reversible changes in the sensor’s resistance caused by the gas adsorption and...

BPN952: Zr-MOFs for Colorimetric Detection of Acidic Gases

Zhou Li
Adrian K. Davey
Aifei Pan

Among the large family of metal-organic frameworks (MOFs), Zr-based MOFs, which exhibit rich structure types, outstanding stability, and intriguing properties and functions, are foreseen as one of the most promising MOF materials for practical applications. This project aims to leverage the excellent adsorption capacity of Zr-MOFs to acidic gases such as NO2, SO2 and CO2 to develop sensing materials that respond to these target gases by changing color. MOF-808 is chosen due to its large pore size of 18.4 Å and excellent stability in acidic environments. Basically, amines including...