For example i notice that the latest chips are 3 nm & below, & over the last decade i’ve seen it shrink little by little. What is it about this process that more money needs to be poured into each die shrink, & why couldn’t we just jump from 90nm to 3nm instead pf 65nm etc etc?
In: Engineering
because we work really hard for a few years. say hurray we made a 30% improvement and then start making a product. If we worked really hard for a few years and make 30% improvement and then don’t make a product then we don’t have the money to work a few more years to get another 30% improvement. In the extreme, if I had infinite money I could work my entire life and make massive improvements that would never become products and probably die with me because they were never distributed to people who want to steal the improvements to make their own products.
if your question is why don’t we just make the move from 90nm to 3nm is 3 years, it is because we don’t know how. Why didn’t you earn a 6 figure salary by your 3rd birthday? You didn’t know how.
If you are asking what physically is stopping us? Diffraction and the properties of materials. Light doesn’t go where we want it to go. We usually try and make it go with materials, but no known materials make it do what we want it to do.
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