Page 41 - tech fest 2025 אשדוד חוברת תקצירים

Development of Electrochemical Sensors for Detecting Metals in Water Using DPN Technology While Examining the Effect of Spatial Circulation of MCS EEE-A-11
Sharon Atia; sharonatia23@gmail.com Liat Bar-Ratson; liat.bar.ratson@gmail.com
Advisor: Dr. Ze'ev Fredkin1, Dr. Moshe Zohar2 1SCE - Shamoon College of Engineering, Ashdod 2SCE - Shamoon College of Engineering, Be’er-Sheva
The project aims to develop a sensor for detecting heavy metals in drinking water, which pose a significant risk for human health. This project's goal was to fabricate such sensors using the innovative dip-pen nanolithography (DPN), which enhances their electrical and chemical properties and improves sensitivity by controlling the surface-to-volume ratio and nanocluster size. The key challenge was optimizing the surface-to-volume ratio and spacing between nanoclusters, as sensor performance depends on the active surface areas of the sensor and its conductive electrode. This project aimed to further maximize the efficiency and sensitivity of the sensors using data obtained from AFM scans at various spacings between nanoclusters. We used a dedicated MATLAB code to analyze the obtained meta-chemical surface data.
Keywords: dip-pen nanolithography, heavy metals, sensor, spacing between nanoclusters, surface to volume ratio
Design of an Integral Jamming System for Disrupting Wireless Communication
EEE-A-12
Raz Chico; razchico234@gmail.com Adi Shlomo; adimono2001@gmail.com
Advisor: Mr. Aviv Ofer Cohen ELTA, Ashdod
This project developed a system capable of intercepting signals from a transmitting antenna and emitting signals on the same frequency to effectively disrupt the original transmission – a technique known as electronic jamming, which aims to prevent the communication from reaching its intended receiver. The project encompassed the design and implementation of both hardware and software components to achieve real-time signal detection and jamming. Key considerations included ensuring synchronization with the target signal, and managing power levels to effectively interfere with the specific transmission without causing unintended disruptions. The system's performance was evaluated, confirming its ability to consistently and effectively block targeted transmissions within a specified range.
Keywords: embedded systems, jamming, wireless communications
Book of Abstracts | 2025
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