Recent Submissions

  • Low Amplitude Ambient Sensing Device for Field Applications

    Castro, Luis (2022-03-02) [Poster]
    Low amplitude sensing can be challenging considering the great exposure it has to white noise around the environment. Having a small amplitude makes the signal significantly more vulnerable to getting lost in the high frequencies that noise has. For that reason, professionals have been using and improving a device called Lock-in Amplifier which allows sensing signals with small amplitude regardless of their noise. The challenge approached in this poster is to change the low usability these conventional Lock-in Amplifiers have in the field regarding their size and exposure to damages. By developing an integrated circuit divided into 3 parts responsible for a certain task, it is possible to build a gadget capable of performing in extremely noisy environments and delivering information from the carrier.
  • Quantum digital circuits implementation on IBM quantum computer

    Alabdullah, Mohammed (2022-03-02) [Poster]
    Quantum computing is an emerging computing paradigm that relies on quantum physics principles such as superposition and entanglement to perform calculations. Recent works show the ability to solve problems that would take thousands of years on classical computers in hours achieving computing supremacy. There are different quantum computers around the world such as IBM and Google QuAIL. In this project, some binary combinational circuits are implemented and evaluated on IBM quantum computers using Qiskit. Also, different quantum computers are compared and Qiskit noise mitigation techniques are performed on the results computations. Due to intrinsic noise in quantum computers, the computation results are not reliable. Hence, efficient noise characterization and mitigation techniques are crucial for efficient quantum computers.
  • Ultra-wide bandgap semiconductors for new-generation multi-gate transistors

    Mireles, Diego (2022-03-02) [Poster]
    The cities of the future are visualized as spaces where information flows in real-time in an environment of autonomous systems. These systems will oversee the efficient use of resources and reduce human intervention in all tasks using intelligent devices connected to each other. Every intelligent device involves processors composed of millions of transistors. Transistors are usually made from silicon and nowadays the physical limit has almost been reached so to keep improving, the research must focus on new materials and 3D configurations instead of planar. Ga2O3 is a semiconductor material with attractive properties, such as an ultra-wide bandgap of 5 eV, which promises to be a good replacement for silicon in transistors. During this project, we followed the full fabrication of different transistors architectures using Ga2O3: top gate and tri-gate.
  • 4D printed solar tracker based on shape memory polymer

    Tytov, Serhii (2022-03-02) [Poster]
    The main aim of this work is researching and proof of concept of passive solar tracker which is based on shape memory polymer and can be 4D printed to shrink under direct sun radiation. Developing this device requires no additional electrical energy, constant maintenance and keeps voltage output constant after changing the normal angle of light source.
  • An organic electrochemical transistor to record photoplethysmogram signals

    Hnapovskyi, Vladyslav (2022-03-02) [Poster]
    This work presents using an organic electrochemical transistor (OECT) for measurements of photoplethysmogram signals, which carried important biomedical information about blood volume changes in the microvascular bed of tissue. Besides results of signal processing and use of peak detection algorithms are presented.
  • Instant detection of honey adulteration using microwave resonant-based technology

    Sanchez, Jaime; Rasz, Monika (2022-03-02) [Poster]
    Adulteration in edible products brings health and financial consequences to consumers and primary producers. Amongst all of them, honey is one of the most adulterated foods. The existing methodologies to detect adulterants in honey are rigorous and need to be performed by qualified professionals. In this project, a microwave resonance-based sensor was designed, fabricated, and tested for different kinds of possible adulterant substances for honey. To address the commercial applicability for being a low-cost, easy and effective approach for non-contact/non-destructive detection of honey adulteration, a wireless version of this technology is also proposed and simulated. This technology will bring a sense of security about the quality of foods and will alert the consumers from the existing supply chain's unfair trade practices.
  • Autonomous wireless BlueROV with acoustic communication​

    Okhmak, Valeriia (2022-03-02) [Poster]
    At the proposed methodology - AUV, an autonomous underwater vehicle, can be controlled by the joystick. In the topside computer, it is required to install a virtual machine and appropriate libraries for the modem and controller. The programming code for the transmitter is linking two modems first and giving appropriate roles to each. Control signals are read from the joystick, represented on the visual control pad, and sent to the receiver. Modems are maintaining the RS-485 standard, for this purpose, one adapter is used for the top side computer and appropriate pins of the Raspberry.pi on the BluROV control part. The main disadvantage of the control via acoustic communication is the time delay and low data resolution. Acoustic communication is a great solution for the localization of AUV. For the control and large data transmitting another type of communication might be used, such as optical or radio waves.
  • Class D Power Amplifier, Structure and Behaviour

    Castro Sustaita, Gilberto Edgar Abrahan (2022-03-02) [Poster]
    A class D power amplifier, unlike class A, B, AB and C, operates with digital and pulse signals. Class D is perhaps the ultimate in amplifier efficiency, this due to its operation, because in its design transistors operates just as a switch, acting at the extreme ends of the load line. The increase in efficiency comes with a lot of complexity in his design, but in a lot of applications like low power portable devices and very high output power amplifiers it is a good trade-off. The present project shows the structure and behavior of a class D power amplifier constructed with the integrated circuits LTC6992 and LTC 7060 providing a high frequency output.