Unlock the world of modern sensing technologies.
My MOOC on Sensors and Instrumentation, hosted on CourseNetworking (CN), is designed for students, researchers, and professionals eager to explore how we measure and interpret data from the physical world.
What You’ll Learn:
Principles of common sensors (temperature, pressure, proximity, etc.)
Signal conditioning and instrumentation techniques
Real-world applications in IoT, automation, and more
Hands-on examples and self-paced activities
Join the course for FREE at this Link.
Electrostatic Elegance: How a Comb Becomes a Debris Magnet.
In the realm of everyday objects, a humble comb reveals a surprising talent – the power to attract paper debris. This seemingly magical phenomenon is grounded in the captivating world of electrostatics.
The Magic Unveiled: When you run a comb through your hair, it doesn't just untangle strands; it sets the stage for an electrostatic spectacle. The friction between the comb and your hair creates an electrostatic charge on the comb's surface.
The Science of Electrostatics: Electrostatics deals with the study of stationary electric charges. In this case, the comb acquires a negative charge as it gains electrons from your hair. Objects with opposite charges attract each other, and this principle is the key to the comb's debris-attracting magic.
Conclusion: Next time you witness a comb gracefully collecting paper debris, know that it's not just a tool for hairstyling but a fascinating exhibit of electrostatic elegance. The magic lies in the invisible dance of charges, transforming a common object into a debris magnet through the enchanting principles of electrostatics.
In the macro world, we're accustomed to the laws of physics governing our daily experiences. However, dive into the micro dimension, and a simple paper clip can challenge our expectations.
The Phenomenon: When scaled down to the micro level, conventional physics principles like mass lose their dominance. Instead, an often overlooked force takes center stage – surface tension.
Surface Tension Unveiled: At the macro scale, the force of gravity pulls objects downward. But as we shrink our perspective to the microscale, surface tension, a cohesive force at the liquid's surface, becomes increasingly influential. Surface tension arises from the molecular forces between liquid molecules at the surface. As the paper clip delicately rests on the water, surface tension creates a 'film' that supports the weight of the clip, allowing it to float.
Conclusion: The micro dimension unravels a captivating interplay of forces, challenging our perceptions of what makes objects float. The next time you see a paper clip defying gravity on water's surface, remember – it's the invisible force of surface tension that makes this micro marvel possible.
The Explosive Experiment: Will the Balloon Burst?
Experiment Overview: When a balloon is filled with air and exposed to fire, it will explode due to the rapid expansion of air.
Now, observe what happens when the same balloon is filled with water. The water absorbs maximum heat from the flame, preventing the rubber from getting too hot, and as a result, the balloon doesn't burst.
Understanding the Science: But why does this happen? It all comes down to the concept of heat capacity and specific heat.
Water, with a specific heat of 4.186 J/g°C, requires significantly more energy to heat compared to air, which has a specific heat of 1.005 J/g°C. This higher heat capacity of water makes it an effective heat absorber, keeping the rubber cool and the balloon intact even when exposed to a flame.
Postgraduate Programme:
Microsystem design & Technology: 2018
This course is designed for students working in the area of advanced fabrication and system designs of microsystems technology. Students will expose to the various fabrication and materials used, its processes and also designing of such micro-systems.
Microelectronic Materials: 2018
The topics covered the detailed studies of the common microelectronics material and various steps involved in the manufacturing of integrated circuit / discrete devices.
Undergraduate Programme:
Control systems: 2015 - 2019
The course covers basic principles involved in process control and requires a good knowledge of mathematics in calculus, Laplace transform, and complex numbers. A control system is easily translated into a block diagram after the Laplace transformation. The transfer function in each block describes the action of many types of processes on pneumatic, electronic, computer-based, hydraulic, mechanical and electrical systems.
Process control and instrumentation: 2016 - 2018
The course introduces the types of process control, including discrete-state and continuous process controls. Analog and digital signal conditioning circuits related to industry are also included.
Electronic Circuit: 2016
This course covers the various laws, theorems and techniques used in DC and AC circuit analysis. This course also explores the design and debugging of analogue electronic circuits. Lectures on the performance characteristics of diodes, transistors (BJT ), JFETs , are conducted.
Micro-Electromechanical Systems (MEMS): 2017 - Present
This course introduces MEMS, basic electrical and mechanical concepts, electrostatic/thermal sensing and actuation, micro-fabrication, surface and bulk micromachining, etc.
Sensors and Instrumentation: 2017 - Present
This course introduces sensor technologies and instrumentation design, including programmable logic controller (PLC), in advance automation. A case study in Automatic guided vehicles (AGV) is being discussed.
Automation in 4th Industrial Revolution: 2022 - Present
This course shows the current trend of automation and data exchange in manufacturing technologies. As automation increases, computers and machines will replace workers across many industries. This course will equip undergraduate students from all disciples with the fundamentals of automation technology in order to face this wave of technological innovation.