To enhance imaging from the TEM a beam alignment needs to be performed previous to use. A Resource for this alignment is a holey grid. A holey grid is usually a TEM grid aid coated with a skinny plastic film as well as a stabilizing carbon layer.Vi?c l?a ch?n lo?i decal ?? in tem dán r?t quan tr?ng. ??i v?i các dòng s?n ph?m ???c b?o qu?n trong