Being a newbie right here, I expect this has already been discussed at length...however
I could never figure out just how to ephasise that Strat bark as heard on the early releases suach as The Savage, FBI, Frightened City etc and Ive been playing since the late 50s. I was enlightened by an enthusiast sometime ago. The bark can be achieved by turning the tip of the plectrum at a slight angle so it addresses the string almost from the plectrum side edge initially. Thats not the whole story though..at the same time the tip of your thumb has to make the slightest contact with the string. OK its not easy..get it wrong and you will completely duff the note all together. I only attempt it if Im feeling confident that I wont mess up....which gets more often as the years go by.