To optimize imaging in the TEM a beam alignment need to be performed just before use. A Device for this alignment is usually a holey grid. A holey grid is usually a TEM grid support coated with a skinny plastic film plus a stabilizing carbon layer.+ Giá r?t r? cho nh?ng lo?i gi?y decal v? có ch?t l??ng trung bình kho?ng twenty-30K/1mD??i ?ây l�