To optimize imaging from the TEM a beam alignment ought to be carried out ahead of use. A Instrument for this alignment is really a holey grid. A holey grid can be a TEM grid support coated with a thin plastic film as well as a stabilizing carbon layer.In decal trong ???c ?ng d?ng r?ng rãi trong trang trí và qu?ng bá th??ng hi?u L?u ý khi in d