List of Experiments / Activities
- Exp. Theory
- List of Experiments
- 1Unit I — Electrical Conductivity of Soldering Alloys — Measure electrical resistivity of different soldering alloys (Sn-Pb, Sn-Ag-Cu, lead-free) using four-probe method; compare and relate to PCB soldering material selection for RoHS compliance
- 2Unit I — Band Gap of Semiconductor Material — Determine band gap of Ge/Si by temperature-dependent resistance measurement; plot ln(R) vs 1/T; relate to transistor and memory device material requirements
- 3Unit II — Charge-Discharge Characteristics of Li-ion Battery — Study charge and discharge curves of a small Li-ion cell; determine capacity (mAh), C-rate, and cycle efficiency; relate to battery chemistry in laptops, phones, and IoT devices
- 4Unit II — Supercapacitor – Capacitance and Energy Density — Charge and discharge a supercapacitor at different current rates; calculate capacitance and energy density; compare with battery; relate to energy harvesting in IoT nodes
- 5Unit III — Electrochemical Detection – pH Sensor Calibration — Calibrate a glass pH electrode using standard buffer solutions (pH 4, 7, 10); plot mV vs pH; calculate sensitivity; relate to electrochemical pH sensors in smart systems
- 6Unit III — Gas Sensor Response – Metal Oxide (Demonstration) — Observe resistance change of a metal oxide gas sensor (MQ-series) on exposure to different gases (LPG, alcohol vapour); measure response time and recovery; relate to IoT gas sensing
- 7Unit IV — Synthesis and Characterisation of Silver Nanoparticles — Synthesise silver nanoparticles by chemical reduction; confirm by UV-Vis spectroscopy; study antimicrobial coating application; relate to nanoparticle-based functional coatings in electronics
- 8Unit IV — Contact Angle and Surface Wettability — Measure contact angle of water on uncoated and hydrophobic-coated surfaces (PDMS, Teflon spray); relate to self-cleaning and anti-fouling coatings in smart device displays and sensors
- 9Unit IV — Thin Film Preparation by Spin Coating — Prepare thin polymer film on glass by spin coating; measure thickness by Newton's rings or profilometer; relate to thin film deposition in display and sensor fabrication
- 10Unit V — Green Chemistry – Atom Economy Calculation — Atom economy calculation for green chemical processes.
- 11Unit V — Recovery of Copper from PCB Scrap (E-waste) — Leach copper from a small piece of PCB waste using H₂SO₄/H₂O₂; electrodeposit recovered copper on a cathode; determine recovery percentage; relate to e-waste hydrometallurgy
- 12Unit III — UV-Vis Spectroscopy – Beer-Lambert Law — Measure absorbance of copper sulphate solution at different concentrations at λmax; plot calibration curve; determine unknown concentration relate to optical chemical sensors in smart devices
Course Objectives
- To study the chemical and electrical properties of computing hardware materials
- To characterise electrochemical energy storage and power supply systems for smart devices
- To study chemical sensors and electrochemical detection methods used in smart systems
- To synthesise and characterise nanomaterials and functional coatings for smart applications
- To apply green chemistry principles and evaluate e-waste relevant materials
Course Outcomes (COs)
After completion of the course student will be able to:
- CO1Measure resistivity of solder alloys and determine semiconductor band gap for device material selectionK3
- CO2Characterise Li-ion battery and supercapacitor performance for smart device power systemsK3
- CO3Calibrate pH sensors and demonstrate gas sensor response for IoT chemical sensingK3
- CO4Synthesise nanoparticles and measure wettability and thin film properties for smart coatingsK3
- CO5Apply green chemistry metrics and demonstrate copper recovery from e-wasteK3
Suggested Textbooks / Reference Books
- Engineering Chemistry – Jain and Jain
- Green Chemistry: Theory and Practice – Anastas and Warner
- Nanomaterials: An Introduction to Synthesis, Properties and Applications – Vollath Safety and General Instructions
- Students must wear lab coat and safety goggles at all times in the chemistry laboratory
- Handle all acids, alkalis, and oxidising agents with extreme care; use fume hood for volatile chemicals
- Dispose of chemical waste in designated containers as per lab safety guidelines
- Do not pipette by mouth; use rubber bulb or mechanical pipette fillers
- Wash hands thoroughly after every experiment; report any spillage or accident immediately
Official AKTU syllabus
This subject is on page 61, 62, 63, 64, 65 of the original AKTU PDF.