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15:2115:21, 15 April 2026 Alcohol Sensor Based on Gas-Sensitive Resistive Materials (hist | edit) [13,508 bytes] Jiaxin (talk | contribs) (Created page with "== Introduction == The MQ-3 is a low-cost metal-oxide semiconductor (MOS) gas sensor designed for the detection of alcohol (ethanol) vapor in air. It is widely used in breathalyzers, vehicle safety systems, and environmental monitoring due to its high sensitivity to ethanol and relatively low sensitivity to interfering gases such as benzene and smoke. The sensing material is tin dioxide (SnO<sub>2</sub>), an n-type metal-oxide semiconductor. Structurally, the sensor co...")

15:3215:32, 14 April 2026 Rotational Speed Measurement System Based on Hall-Effect Sensor (hist | edit) [28,561 bytes] Qifang (talk | contribs) (Created page with "= 1 Introduction = == 1.1 Objectives == As a semiconductor device based on the Hall effect, the Hall sensor is capable of converting magnetic-field variation into an electrical response, making it highly suitable for rotational monitoring and related sensing applications. The objective of this experiment is to demonstrate how periodic magnetic variation associated with rotational motion can be translated into a measurable electrical signal. == 1.2 Related Applications...")

11:5011:50, 28 March 2026 Surface EMG Sensor for Muscle Activity Measurement: AFE Design and Signal Processing (hist | edit) [25,983 bytes] Jialuo (talk | contribs) (Created page with "==Filter== ===Introduction=== Surface electromyographic (sEMG) signals reflect the electrophysiological activity generated during skeletal muscle contraction and have been widely applied in sports medicine, rehabilitation assessment, and human–computer interaction. In practical acquisition environments, however, sEMG signals are often contaminated by various sources of noise. Power-line interference (50 Hz or 60 Hz), caused by electromagnetic coupling from power cable...")

18:0018:00, 5 March 2026 Precision Thermocouple Based Temperature Measurement System (hist | edit) [8,304 bytes] Nisha (talk | contribs) (Created page with "==Introduction== The objective of this project is to design, build, and validate a precision thermocouple-based temperature measurement system using the Seebeck effect. The system converts the extremely small thermoelectric voltage generated by a thermocouple into accurate, real-time temperature data. Unlike thermistors or integrated circuit temperature sensors, thermocouples are capable of: * Operating over a very wide temperature range * Withstanding harsh and high-t...")

12:3712:37, 12 February 2026 Fluorescence Sensor for Carbon Quantum Dots: Synthesis, Characterization, and Quality Control (hist | edit) [17,475 bytes] Xiaoyue (talk | contribs) (Created page with "== Introduction == Carbon quantum dots (CQDs) are fluorescent nanomaterials that can be formulated into water-based coatings and inks, enabling UV-activated visuals for applications such as exhibition displays, interactive graphics, and covert markings. In this project, we focus on CQDs synthesized from citric acid and urea because the system is low-cost, relatively safe, and easy to prepare with typical teaching-lab equipment, and it commonly yields bright visible fluo...")

16:0716:07, 10 February 2026 Inductive Sensors of Ultra-high Sensitivity Based on Nonlinear Exceptional Point (hist | edit) [22,097 bytes] Siyu (talk | contribs) (Created page with "==Introduction== We are building two coupled oscillating circuits: one that naturally loses energy (lossy) and one that gains energy (active) using a specific amplifier that saturates at high amplitudes. When tuning these two circuits to a nonlinear Exceptional Point (NEP), the system becomes extremely sensitive to small perturbations in inductance, following a steep cubic-root response curve, while remaining resistant to noise. ==Team Members== Wang Peikun E1538091@u....")

14:3514:35, 28 January 2026 Optical Sensor of Magnetic Dynamics: A Balanced-Detection MOKE Magnetometer (hist | edit) [13,115 bytes] Junxiang (talk | contribs) (Created page with "==Team Members== LI Junxiang E1127462@u.nus.edu Patricia Breanne Tan Sy pb.sy82@u.nus.edu ==Idea== We will use a laser-based magneto optical Kerr effect setup featuring a high-sensitivity differential photodiode array to measure the Kerr rotation angle induced by surface magnetism. This system serves as a versatile optical platform to investigate how external perturbations such as magnetic fields or radiation source alter the magnetic ordering of materials, allowing for...")
12:2112:21, 28 January 2026 EA Spectroscopy as a series of sensors: Investigating the Impact of Solvent Type on Mobility in Organic Diodes (hist | edit) [52,231 bytes] Chenyang (talk | contribs) (Created page with "==Team members== ==Idea== This project aims to .... ==Setup== We plan for a setup.... ==Measurements== ....") originally created as "EA Spectroscopy as a series of sensors: Investigating the Impact of Film-Processing Temperature on Mobility in Organic Diodes"

13:0513:05, 27 January 2026 Inductor Sensors of Ultra-high Sensitivity Based on Nonlinear Exceptional Point (hist | edit) [2,252 bytes] Siyu (talk | contribs) (Created page with "==Inductor Sensors of Ultra-high Sensitivity Based on Nonlinear Exceptional Point== We are building two coupled oscillating circuits: one that naturally loses energy (lossy) and one that gains energy (active) using a specific amplifier that saturates at high amplitudes. When tuning these two circuits to a nonlinear Exceptional Point (NEP), the system becomes extremely sensitive to small perturbations in inductance, following a steep cubic-root response curve, while r...")

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