Scanning resolution

The external trigger input allows automatic inspections and ultrasonic imaging. The clock signal of an encoder or of stepper motors can be used as a trigger for the pulser. An internal software controlled divider allows different scan resolutions. 

The conception of the electrochemical robotic system was based on earlier instrumental developments aiming at the design of scanning electrochemical microscopes (SECM),79-81 however using a rather coarse positioning system and hence exhibiting limited scanning resolution. 

Figure 10. (A) The resolution of an arbitrary scattering condition, shown as a function of the detector slit size, (2 ). (B) and (C) A rocking scan is measured by scanning resolution function across a specular CTR (B) The surface rod is broader than the transverse resolution, AQt so that the rocking curve width is determined by the intrinsic width of the CTR. (C) The surface rod shape is more narrow than the transverse resolution, Qt, and the shape of the measured rocking curve is resolution limited (i.e., determined by the sht size instead of the intrinsic Une width).

Diffuse Reflectance Infra-Red Fourier Tranfform Spectroscopy. Spectra were acquired in situ using a DRIFT accessory (Collector) equipped with an environmental cell (Spectratech). DRIFT spectra were recorded in nitrogen up to about 500°C (to avoid absorption bands due to physisorbed or hydrogen-bridged water) on a Perkin Elmer 1600 FTIR spectrometer (64 scans, resolution 8 cm- ). 

The instantaneous field of view was 3 minutes of arc in the scan direction and 10.5 minutes of arc in the cross scan direction for a solid angle of 4.5 x 10 ster. The cross scan resolution was improved by detector to detector overlap to 7.1 and 3.4 arc minutes. 

Figure 6.12 A fixed mouse lung was scanned with ditferent scan protocols and reconstructions were calculated at the same position. Different scan resolutions, related reconstruction times, and the required memory per slice (for half field of view reconstruction) are shown (a) 35 p,m/voxel, 500 x 500 x 16 hit matrix, 0.5 MB/sUce, 30 min volume acquisition time, 1 min hack projection time per slice, (b) 18 p,m/voxel, 1000 x 1000 X 16 hit matrix, 2 MB/slice, 90 min volume acquisition time, 2 min back projection time/slice. (c) 9 p,m/voxel, 2000 x 2000 x 16 bit matrix, 8MB/sUce, 270 min volume acquisition time, 7 min back projection time/slice.

X-ray photoelectron spectroscopy (XPS) XPS is a surface analysis technique that can be used to ascertain surface elemental composition and types of bonds present on the surface. It is also a straightforward, easy, and non-destructive characterization technique. In XPS, different scan resolutions lead to different information. On the one hand, a low-resolution scan can provide the percent of each element, as well as their atomic concentrations. On the other hand, a high-resolution scan can give the types of bonds and concentrations on the surface. Take carbon (Cis) as an example, its high resolution scans can be divided into four components peaks around 285.0, 286.5, 228.0, and 289.5 eV. These subpeaks are Cl (C-C or C-H), C2 (C-OH), C3 (O-C-O or C=0), and C4 (0-C=0), respectively. XPS has frequently been applied to confirm the chemical changes of polymer or fiber after treatment. In addition. XPS can be used to verify the occurrence of surface... 

Density profile of the stmctural foams was measured by a commercial X-ray QMS density profiler model QDP-OIX. A scanning speed of 0.6 mm/sec was used with a scanning resolution of approximately 0.02 mm across the foam thickness. Figure 1 shows typical examples of density profile obtained for neat HDPE and its foam produced under different conditions. 

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