Page 89 - Undergraduate Research Opportunities Program Proceedings 2017-18

School of Engineering
Department of Electronic & Computer Engineering

Department of Electronic & Computer Engineering

Nanomaterial-based Novel Solar Cells

Supervisor: FAN Zhiyong / ECE
Student: CHAN Teresa / BIBU Course: UROP1100, Fall

Anodic aluminum oxide membranes gain attention over the past few decades, due to its various applications to different
fields by the utilization of diverse nanostructure types. More specifically, its application to photovoltaics as a template
for nanowire membrane production is of interest, enhancing efficiencies of the p-n junction activity by an increase in
surface area. In this experiment, I explored the conditions for the formation of nanowells with pore size of 250-400 nm,
a template form for the nanowire membrane of desire, as well as discuss the further plans for the fabrication of
perovskite nanowire solar cells. It was confirmed that the fabrication of AAO with self-ordered nanowells requires
delicate control on anodization time, voltage control, and choice of electrolytes, and skillful manipulation on parameters
during 2nd anodization are vital in producing desirable nanowell arrangement.

Semiconductor Nanowire-based Sensors and Electronics
Supervisor: FAN Zhiyong / ECE
Student: JEON Sang Hyun / ELEC Course: UROP1000, Summer

I first encountered with the impact of memory devices in our modern society. As the importance of artificial intelligence
/ computer vision / machine learning rapidly increases, the number and speed of computing also becomes greatly
important. Thus, it is crucial that hardware memory devices are ready for the speed of these rapidly growing
technologies. Without enough or suitable hardware devices, all the research on software cannot be efficiently used.
Researching on this area can be challenging as improving efficiency or lowering the cost of production are not easy. I
believe one way to improve these are by using smaller materials such as semiconductor nanowires. This is because,
electronic devices can be potentially made smaller and consume less power with nanomaterials.

A Robot Tour Guide - Part II

Supervisor: LIU Ming / ECE Co-Supervisor: SHI Bertram Emil / ECE
Student: LIN Yuanqiao / ELEC Course: UROP1100, Fall

In developing robotic guides, one major factor to consider is to detect and avoid obstacles. Traditional lidar sensor gives
a comprehensive understanding of the surrounding environment, with only one major drawback which is indoor glass
wall detection. In this project, we tried to solve this problem by adding another ultrasound sensor that could accurately
detect glass walls and fusing the map generated by each sensor. Using ROS and gmapping package, one feasible solution
is to modify the message ‘sensor_msgs/LaserScan’ to obtain fused map of one rplidar and one HCSR04 ultrasound
sensor. Details of sensor placement and map accuracy need to be further determined.

A Low-cost Single-wavelength Semiconductor Laser Source Using a Laser Pointer

Supervisor: POON Andrew Wing On / ECE
Student: HUI Yat Nga / SENG Course: UROP1000, Summer

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