To enhance imaging within the TEM a beam alignment really should be performed ahead of use. A Resource for this alignment can be a holey grid. A holey grid is really a TEM grid aid coated with a skinny plastic movie along with 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