Semicon-World

Here begins the beginner's guide to lithography. Yes, that is what the name means if you separate ‘litho’ and ‘graphy’. Doesn’t seem that scary now does it? The name is very literal to the process conducted. The rock in question is our silicon wafer and we create patterns on it for further processing. It is a very crucial process as it directly determines the transistor density which is directly proportional to the amount of data it can process at a time. Patterns are either printed or written on the wafer. Let us go through the process step by step. Figure 1: Process of lithography. First, we coat the wafer in a liquid state compound called photoresist. As the name suggests, this compound changes its properties when light is shined on it. The wafer is then spun around for a determined time and rotations per minute to ensure uniform coating. The same way we use our handheld utensil (I don’t know what you use) to evenly coat bread with butter or jam so that we get every flavored b...

Chippy-chip-chips, a very simple word to describe what is probably the single greatest interdisciplinary scientific and engineering accomplishment till date. These small things that seem like toys or actual potato chips are responsible for around, let’s see here… I would like you to just think what you are reading this post on. If you don’t mind, please open the app that records your screen time, or maybe tell me the last time you might have paid in cash, I guess if you deal in black money that shouldn’t be a problem, but for a poor student like me I have trouble thinking the last time I transacted using printed currency. Figure 1: Basic overview of various manufacturing components  Reference: Semicon Talk on YouTube Semiconductors dictate your life, around 50 percent of your day is occupied by electronic devices because it is just so convenient. I would like to eat something new, just order it, or if you feel creative enough, look up a recipe. I need ingredients for the recipe, or...