To improve imaging in the TEM a beam alignment really should be done previous to use. A Device for this alignment is often a holey grid. A holey grid can be a TEM grid assist coated with a skinny plastic movie in addition to a stabilizing carbon layer.L?i ích c?a tem v? ??i v?i doanh nghi?p r?t l?n. T? th?c t? chúng tôi ghi nh?n m?t s? giá tr?