Public Presentation Competition

I was a finalist in the 2010 UCC Science for All Postgraduate Student Public Presentation Competition. Below are the abstract and presentation of my talk. Also I wrote a full page article published on the Evening Echo news paper.

The transistor is the fundamental building block of electronic devices, and its presence is ubiquitous in modern electronic systems like mobile phones, computers, airplanes...etc.

The essential of electronics is the science of electron movement. Transistors are the switches to control the flow of electrons, like a tap turning on or off the flow of water. Instead of turning the tap, an electronic voltage is applied at the transistor gate to open or close the electron flow.

Electronic components are continuing to reduce in size, down to the nanometer (Billionth of a meter), thus making a transistor becomes much more difficult. This talk will introduce a revolutionary type of transistor. Unlike normal transistors which keep the “water pipe” empty, we leave the channel full of electrons which eliminates all the fabrication steps to stop the water

coming into the channel and reducing the cost. With a filled channel, it is much easier to turn on the transistor. A material is placed around the channel to turn off the transistor. Another challenge in this transistor is dirt. Because the transistor size is so small and the channel is full of electrons, a very small particle of dust can have a huge effect of the electron flow. Here we will see how we can significantly reduce these detrimental effects and even use them to our benefit.

In this age, everybody wants their electronic applications to be smaller, faster, cheaper and more reliable. Now we can make all of these things happen by improving the heart of electronic devices— the transistor.