Physics, 12.02.2020 03:53 JaceJose12
One of the main factors driving improvements in the cost and complexity of integrated circuits (ICs) is improvements in photolithography and the resulting ability to print ever-smaller features. Modern circuits are made using a variety of complicated lithography techniques, with the goal to make electronic traces as small and as close to each other as possible (to reduce the overall size, and thus increase the speed). In the end, though, all-optical techniques are limited by diffraction.
Assume we have a scannable laser that draws a line on a circuit board (the light exposes a line of photoresist, which then becomes impervious to a subsequent chemical etch, leaving only the narrow metal line under the exposed photoresist). Assume the laser wavelength is 248.0 nm (Krypton Fluoride excimer laser), the initial beam diameter is 1.0 cm, and the focusing lens (diameter = 1.3 cm) is extremely 'fast', with a focal length of only 0.625 cm.
a. What is the approximate width w of the line?
b. What is the minimum resolvable line separation between adjacent lines?
c. If the laser wavelength is instead reduced to 157 nm, what is the new minimum resolvable line separation?
Answers: 3
Physics, 22.06.2019 00:10
A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?
Answers: 1
Physics, 22.06.2019 07:00
Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount
Answers: 1
Physics, 22.06.2019 12:30
Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?
Answers: 3
One of the main factors driving improvements in the cost and complexity of integrated circuits (ICs)...
Mathematics, 20.10.2019 11:10
Mathematics, 20.10.2019 11:10
History, 20.10.2019 11:10
Mathematics, 20.10.2019 11:10
English, 20.10.2019 11:10
Biology, 20.10.2019 11:10
Social Studies, 20.10.2019 11:10
Mathematics, 20.10.2019 11:10
Physics, 20.10.2019 11:10
Health, 20.10.2019 11:10
Mathematics, 20.10.2019 11:10
Physics, 20.10.2019 11:10
Mathematics, 20.10.2019 11:10