Apple doesn't add more chips to the board to increase the internal storage; instead they use a single chip that comes in different amounts of storage, from 128GB up to 2TB. So if you're thinking of increasing the disk storage on your iPad, you can't just add another chip; you have to remove the existing one, reball the circuit board and solder a new one on. Unless you're experienced at working with BGA components and microsoldering and have the necessary equipment, that's a job best left to professionals.
Does that answer your question, or were you referring to something else when you used the term "particles"?