“Teamwork is the key to keep moving forward and pushing the boundaries of our knowledge” – Prof. Russell D. Dupuis, Ph. D.
In this episode, I interviewed Prof. Russell D. Dupuis, Ph.D., and talks about the use of LED (solid-state lighting) in engineering and how LEDs changed the world and will continue to do so.
Here Are Some of the Key Points Discussed About How LEDs Changed the World of Engineering:
- LEDs have been studied for many years but were only made available commercially in the mid-1980s. Today we have a wide variety of high-efficiency LEDs. They are in computer screens, cell phone screens, car headlights and taillights, indicator-type lights, and many more.
- With LEDs being very energy-efficient and adopted and adapted across the planet for lighting applications of all kinds, they have potentially saved trillions of kilowatts of electricity. They could save many power plants and reduce carbon emissions by the 2050 time frame. Lighting has become so efficient and effective that some of it gets wasted. If LED fixtures are designed correctly, they can be utilized a lot more efficiently than sodium lighting. They are a great solution in rural and underprivileged areas by using them in conjunction with a solar panel and batteries. It is even possible to use LEDs for efficient indoor or remote farming of plants. It is the idea of how astronauts will one day grow vegetables on the surface of Mars.
- Ultraviolet LEDs are now used to kill bacteria and various other pathogens. They are also used in water purification, air purification, and surface decontamination.
- The biggest breakthrough in the journey of LEDs was when the three- and four-element semiconductors were invented. It opened a wide range of materials that could be used in the further development of LEDs. A method of light extraction from the materials then needed to be developed. Many variables are needed to co-optimize the light extraction from the materials. The materials used to create LEDs were needed to be efficient and cost-effective to produce. Mechanical organic chemical vapor deposition is a method to grow semi-conductive film on insulator sub straights, like sapphire. This method is the basis of the production of all the different colored LEDs that we have today. This process is also used for producing laser diodes and solar cells.
- Russell D. Dupuis, Ph.D., was the co-winner of this year’s Queen Elizabeth Prize for his work done on the application of materials technology, electronics, and high-frequency electronics. His work is widely used in things like the internet fiber optic cables that stretch across the globe as well as taking care of diseases at a distance. These are immeasurable in value to humanity.
- Mentorship and collaboration efforts are critical in this field of engineering. Teamwork is the key to keep moving forward and pushing the boundaries of our knowledge.