Roya Maboudian (Advisor)

Research Advised by Professor Roya Maboudian

Adrian K. Davey

Graduate Student Researcher
Chemical and Biomolecular Engineering
Professor Roya Maboudian (Advisor)
Ph.D. 2023 (Anticipated)

Adrian is a fifth-year Ph.D. Candidate in Chemical and Biomolecular Engineering in Professor Roya Maboudian's lab at the University of California, Berkeley. Adrian is also a 2019 NSF GRFP Fellow and 2023 University of California Dissertation-Year Fellow. He earned his Bachelor of Science in Chemical Engineering from the University of Maryland, Baltimore County as a Meyerhoff scholar in 2018.

BPN968: Metal-Organic Framework Based Triboelectric Nanogenerator for Self-Powered Gas Sensing

Jihoon Chung
Adrian K. Davey
Isaac Zakaria
2022

With the rise of interest in the Internet of Things (IoT), the need for low-power sensors for monitoring the working environment has been in spotlight. Considering the number of sensors required to provide real time monitoring, creating sustainable and self-powered sensors is essential. Triboelectric nanogenerator (TENG), which converts mechanical motion to electrical energy, is one of the most promising candidates for realizing self-powered sensors due to its sensitivity to surface material properties and ability to generate consistent signals depending on mechanical input. Here, we...

Synthesis and Gas Sensing Properties of NiO/ZnO Heterostructured Nanowires

Sikai Zhao
Yanbai Shen
Yong Xia
Aifei Pan
Zhou Li
Carlo Carraro
Roya Maboudian
2021

In this study, we report on the synthesis of the NiO/ZnO heterostructured nanowires by a facile two-step liquid phase route and their gas sensing characteristics employing Au interdigitated electrodes integrated on a miniature ceramic heater. Microstructural characterizations indicate that flocculent NiO particles are uniformly assembled on the outer surfaces of the single-crystalline ZnO nanowires, with diameters around 50 nm and lengths ranging from 500 nm to several μm. The gas sensing investigation indicates that the sensors based on NiO/ZnO heterostructured nanowires exhibit high...

In-Situ Synthesized N-Doped ZnO for Enhanced CO2 Sensing: Experiments and DFT Calculations

Yong Xia
Aifei Pan
Ya-Qiong Su
Sikai Zhao
Zhou Li
Adrian K. Davey
Libo Zhao
Carlo Carraro
Roya Maboudian
2022

Chemiresistive CO2 sensing is attractive due to low cost and ease of chip-level integration. Our previous studies (Yong Xia, 2021) showed the well-developed ZnO material fabricated by in-situ annealing exhibited good CO2 sensing performance. Here, we have expanded on those studies, including CO2 cyclic tests under both dry air and N2 background whereby a much higher response to CO2 in N2 background was observed. Detailed density functional theory calculations were conducted to understand the behavior. The results indicated nitrogen doping is mainly responsible for the observed response. In...

A New Chemresistive NO2 Sensing Material: Hafnium Diboride

Sikai Zhao
Yong Xia
Steven DelaCruz
Aifei Pan
Zhou Li
Yanbai Shen
Marcus A. Worsley
Carlo Carraro
Roya Maboudian
2022

While metal oxides and metal sulfides have been extensively studied for gas sensing applications, there are no extensive reports on gas sensing properties of metal diborides. Here, for the first time, we have investigated the conductometric gas sensing behavior of HfB2 nanoparticles. The HfB2 nanoparticles is synthesized via a sol-gel method and characterized using X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The gas sensor is fabricated by drop casting the HfB2 nanoparticles on interdigitated Ag/Pd...

Stuart McElhany

Graduate Student Researcher
Chemical and Biomolecular Engineering
Professor Roya Maboudian (Advisor)
Ph.D. 2026 (Anticipated)

Yaprak Ozbakir

Visiting Scholar Researcher
Chemical and Biomolecular Engineering
Professor Roya Maboudian (Advisor)

Alireza Pourghaderi

Graduate Student Researcher
Chemical and Biomolecular Engineering
Professor Roya Maboudian (Advisor)
Ph.D. 2026 (Anticipated)

My name is Alireza Pourghaderi and I was born in Shiraz, Iran, in 1997. In 2019, I earned my bachelor's degree in Chemical Engineering from Sharif University of Technology. My B.S. thesis focused mainly on nanomaterials and their environmental applications. I used nanomaterials such as MOFs and Nanodiamond in wastewater treatment applications such as dye adsorption and heavy metal removal. To pursue my academic education, I enrolled in the chemical and biomolecular engineering Ph.D. program at the University of California, Berkeley. Currently, I'm continuing my research on nanomaterials...