To enhance imaging during the TEM a beam alignment ought to be performed before use. A tool for this alignment is often a holey grid. A holey grid is really a TEM grid support coated with a skinny plastic film plus a stabilizing carbon layer.Chi ti?t D?ch v? in tem mã v?ch ch?t l??ng t?i X??ng In Nhãn Mác D?ch v? in tem mã v?ch ch?t l??ng t?i X