To optimize imaging in the TEM a beam alignment should be executed previous to use. A Device for this alignment is a holey grid. A holey grid is usually a TEM grid help coated with a skinny plastic film and also a stabilizing carbon layer.In tem v? t?i Gia Lai in nhanh, decal v? Chan Prolonged, siêu v?, kháng n?ng ch?u m?a dán ngoài tr?i n?ng m