UROP Proceedings 2020-21

School of Engineering Department of Electronic and Computer Engineering 161 Compact Models for Circuit Design Supervisor: SHAO Qiming / ECE Student: XU Zimo / CPEG Course: UROP1000, Summer In this report, I proposed a physics-based compact model for the three-terminal VGSOT-MTJ device with the AFM/FM/Oxide structure, which includes the models written in MATLAB. Then I investigate the impact of the VCMA effect on the field-free SOT switching through the figures produced by MATLAB. Equipment Automation for Remote Experimentation Supervisor: SHAO Qiming / ECE Student: XING Hexiang / ELEC Course: UROP1100, Fall This project named equipment automation for remote experiment aims at developing a software platform to control laboratory apparatuses remotely. In order to achieve this function, a software tool called Labrad, a platform that can divide a complex project into simple, manageable tasks that are operated by different server modules, is used. Labrad allows users to communicate with different apparatuses directly and sufficiently through a computer, based on python programming. The report shows the basic structure and data flow in Labrad system, how to obtain data from a magnetic sensor, and the method to control a stepper motor by computer programming. Equipment Automation for Remote Experimentation Supervisor: SHAO Qiming / ECE Student: LIU Hanmo / CPEG Course: UROP1100, Spring It is known the computer algorism can do the logic control based on the input of the system. There is a balance between algorism and building the circuit. In our study, we build a Hall circuit and managed to do the electronic measurement automatically with electrical characteristics. Equipment Automation for Remote Experimentation Supervisor: SHAO Qiming / ECE Student: WANG Peiqi / ELEC Course: UROP1100, Spring A wide variety of devices and systems based on emerging materials have an exciting future in fields like AI and IoT. However, it is very time-consuming and sometimes even impossible to control or test them in person with testing equipment. It is therefore meaningful to develop a platform that can achieve the objective of “Equipment Automation for Remote Experimentation”. Apart from the controlling software, a hardware system is needed to control all apparatuses remotely for intelligent investigation. We survey the existing ADC and DAC circuits, and simulate several circuit models using LTspice. These circuits can later be used as controllable current source or sensing components in the automation system.

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