Mark Lancaster, Ahana Jhamb, Xilai Song, Marissa Youderian, Gabriel Unger, and Gyuseok L. Kim
A solar cell laboratory course for high school and college undergraduate students is proposed. The electrical characterization of the solar cell is performed to confirm the functionality of the device as both a diode and a power source. The efficiency of the solar cell in the illuminated condition is found to be 13.1 %. We find the efficiency of the solar cell slightly decreases as the intensity of light decreases. However, there is no significant difference in efficiency except for in the opaque condition. A calibrated solar cell, multimeter, current sensor, Arduino, coding and polarization are used to perform the experiment.
Jeffrey Meng, Gyuseok L. Kim, and Gabriel Unger
Micro-electromechanical systems (MEMS) devices have many unique advantages, and offer an exciting entrance for students into the field of nanotechnology and nanofabrication. In this article, an educational hands-on laboratory protocol with MEMS devices is proposed. Using a paper airplane, an Arduino, and the MPU 6050 MEMS accelerometer/gyroscope sensor students are able to create a graphical aircraft attitude indicator. The data is then processed on the Arduino, which is connected to a computer. The computer can then run graphics software displaying a digital aircraft attitude indicator showing the roll and pitch of the aircraft live.
Marissa Youderian, Xilai Song, Mark Lancaster, Ahana Jhamb, David J. Jones, and Gyuseok L. Kim
Microfluidic devices have been fabricated with gelatin and paper clips. Optimization of fabrication and characterization process has been carried out systemically by varying gelatin-to-water ratio, bonding time and connector type. We find that the higher gelatin-to-water ratio and the luer lock syringe tip provide a greater success rate, whereas the influence of bonding time is limited. The Reynolds number was calculated to identify whether the fluid shows laminar or turbulent flow.
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