Overview

Sensors are the backbone of modern systems, vital in industries such as healthcare, automotive, consumer electronics, environmental monitoring, and IoT. Delve into the world of sensors with our "Fundamentals of Sensors" course, crafted to provide a comprehensive understanding of sensor principles, fabrication processes, and diverse applications. Ideal for aspiring professionals and students, this course equips you with the foundational knowledge and technical skills vital for thriving in modern industries reliant on sensor technology. Through technical insights and hands-on demonstrations, this course bridges theoretical concepts and real-world applications, offering a strong foundation for students and professionals interested in sensor technology and its diverse applications across industries. By the end of the course, you will possess a robust understanding of sensor technology, preparing you for a successful career in various high-tech fields. Whether you aim to become a sensor design engineer, work in R&D, or engage in product development for innovative technologies, the knowledge gained here will be your cornerstone for success.

Syllabus

Introduction to Biosensors and Applications

Welcome to the exciting intersection of biology and materials science. This is the first course in the three-part Specialization in Sensor Technologies for Biomedical Applications. In this introductory module, you'll learn about the fundamentals of biosensors and their importance in biomedical applications. We will review the purpose, principles, and key materials for biosensor design, highlighting ways to improve performance and reliability. A lab video on cleanroom practices for biosensor fabrication will provide a hands-on understanding of the controlled environment and protocols needed for precision in sensor technology.

Sensor Fabrication Techniques: Physical Vapour Deposition & Chemical Vapour Deposition

In this module, you will dive into essential deposition techniques for biosensor fabrication. You will explore Physical Vapour Deposition (PVD) methods, including E-beam evaporation, thermal evaporation, and sputtering, to understand how to precisely layer thin films for optimal sensor functionality. Lab sessions will enhance your practical knowledge of the equipment and processes for creating uniform, high-quality coatings. Additionally, you will learn how Chemical Vapour Deposition (CVD) uses chemical reactions to create robust and adaptable sensor surfaces. These techniques are crucial for developing biosensors with superior sensitivity, durability, and functionality.

Sensor Fabrication Techniques – Lithography and Micromachining

In this module, you will start with an introduction to lithography and learn patterning methods for creating precise microscale features vital for advanced sensor designs. You'll engage in numerical problem-solving to reinforce your understanding of lithography and micromachining, followed by a practical demonstration of the lithography process. Then, you'll explore micromachining's role in structuring sensor components, focusing on both wet and dry etching techniques, with a demonstration of wet etching to show how material layers are selectively removed, giving you a comprehensive grasp of micromachining applications in biosensor development.

Sensor Types and Fabrication Process Flow

In this module, you will explore advanced fabrication techniques for gas sensors, learning about bulk and surface micromachining, as well as sacrificial layer methods. Understand how these approaches apply to gas sensor fabrication and how material and structural choices affect sensor performance and durability. Additionally, you will delve into the principles and applications of other sensors, including humidity, proximity, and radiation sensors. By examining these diverse sensor types and their fabrication processes, you will gain insights into tailoring sensors for specific biomedical applications.

Sensor Interfacing and Packaging Techniques

In this module, you'll gain a solid understanding of commercial sensor fabrication processes and key technologies for modern sensor integration. You'll start by exploring 3D printing, including its types and applications in additive manufacturing to create custom sensor housing and components. Next, you'll dive into Printed Circuit Board (PCB) design, learning schematic and layout design for effective sensor interfacing. You'll also develop practical skills in biosensor interfacing and participate in a wire bonding demonstration, equipping you with the technical foundation to connect and integrate biosensors into functional electronic systems.

Final Assignment and Course Wrap-Up

In this module, you will consolidate all the knowledge and skills you have acquired throughout this course. The focus is on synthesising your learning and demonstrating your expertise through a comprehensive final assignment.