Tecnai on-line help manual -- Options - UT Southwestern

<strong>Tecnai</strong> on-line help Options 70Options Software version 25 TEM Smart Tilt (FP5454/00)Diffraction experiments can be difficult, especially in combination with the non-eucentric β tilt.Inexperienced users often find it difficult to predict by how much the stage must be tilted to bring acertain feature of the diffraction pattern (zone axis or systematic row) into alignment with the optical axis.TEM Smart Tilt combines a range of tools that assist in diffraction experiments:• A representation of the <strong>Tecnai</strong> viewing screen with the orientation of the tilt axes and tilt anglesindicated. The display is coupled directly to the active camera length on the microscope.• The possibility to double-click with the left-hand button of the mouse anywhere on the 'viewingscreen' displayed and the feature corresponding to that location will be brought to the center of thediffraction pattern by tilting.• Accurate measurement of tilts necessary to bring certain features in the diffraction pattern along theoptical axis or tilt them half-way ('Bragg' tilting to go from a diffracted beam in Bragg condition to thesystematic row). After Bragg tilting it is possible to tilt left or right around the systematic rowafterwards in user-defined tilt steps.• Rapidly toggle between focussed diffraction pattern and shadow image for both SAED and CBED.5.1 Getting startedThe TEM Smart Tilt option consists of two parts:• The Smart Tilt Control Panel.• The Smart Tilt Display window.To use TEM Smart Tilt first use the <strong>Tecnai</strong> Workspace layout to drag the Smart Tilt Control Panel into aworkset. Go to the tab of the workset and press the Display button in the Smart Tilt Control Panel. TheSmart Tilt window will be loaded and its functionality become available. You can leave the Smart TiltControl Panel in your workset for future use. The Display window will only be loaded when the Displaybutton is pressed.The major part of the Smart Tilt functionality is present only in the Display window. The Control Panelalso provides rapid access to the more often-used functions.5.2 Smart Tilt Control PanelThe Smart Tilt Control Panel contains two sets of functions forSmart Tilt:• Functions that load the Smart Tilt Display window (aseparate window that is typically positioned in the data spaceof the <strong>Tecnai</strong> User Interface) or determine its size.• Functions that give rapid access to often-used Smart Tiltfunctions.