To improve imaging in the TEM a beam alignment should be performed just before use. A Software for this alignment is usually a holey grid. A holey grid can be a TEM grid guidance coated with a thin plastic movie along with a stabilizing carbon layer.Không b? ?nh h??ng b?i các tác ??ng c?a môi tr??ng, b?t k? ?i?u ki?n th?i ti?t có ?? ?m cao, l?