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Vector-scan mode

Figure 15.2 shows the different types of EBLs, along with their writing strategies. This figure also illustrates how the exposure tool has evolved from being a tool that used a Gaussian beam (in raster scan or vector scan mode) to print one pixel at a time on the wafer, to one that used a shaped beam (with fixed or variable shape) to print one pixel at a time on the wafer, then to one that used a shaped beam to project and print an entire cell or character at a time on the wafer, and then to one... [Pg.749]

Laser scanning is the step needed to convert pre-designed CAD patterns into real structures. Two basic modes for direct laser scanning can be utilized, raster-scan mode and vector-scan mode, of which the concepts are illustrated in Figs. 31a, b. [Pg.227]

Fig. 32 A micro-bull scupture produced by vector scanning. Only the crust was defined by the two-photon process the inside was solidified by illumination under an mercury lamp. In this particular structure, the two-photon scanning time was reduced by 90% due to the use of a vector scanning mode... Fig. 32 A micro-bull scupture produced by vector scanning. Only the crust was defined by the two-photon process the inside was solidified by illumination under an mercury lamp. In this particular structure, the two-photon scanning time was reduced by 90% due to the use of a vector scanning mode...
Figure 40. Operating modes for electron beam systems left — raster scan coupled with continuous table motion right — vector scan, step and repeat. Figure 40. Operating modes for electron beam systems left — raster scan coupled with continuous table motion right — vector scan, step and repeat.
Fig. 31 Two basic scanning modes for two-photon photopolymerization microfabrication. Conceptive illustration of how the two scan modes could be utilized for writing a character s . a raster scan and b vector scan. The solid and open circles denote exposed and unexposed dots, respectively, all scanned by the laser focal point. The dashed open circles in the right part means the dots that aren t scanned... Fig. 31 Two basic scanning modes for two-photon photopolymerization microfabrication. Conceptive illustration of how the two scan modes could be utilized for writing a character s . a raster scan and b vector scan. The solid and open circles denote exposed and unexposed dots, respectively, all scanned by the laser focal point. The dashed open circles in the right part means the dots that aren t scanned...
Ceo = Fullerene SWNTs = Single-walled carbon nanotubes MWNTs = Multiwalled carbon nanotubes DWNTs = Double-walled carbon nanotubes CNTs = carbon nanotubes TEM = Transmission electron microscopy HRTEM = High-resolution transmission electron microscopy SEM = Scanning electron microscopy AFM = Atomic force microscopy Ch = Chiral vector CVD = Chemical vapor deposition HiPco process = High-pressure disproportionation of CO RBM = Radical breathing vibration modes DOS = Electronic density of states. [Pg.5959]

Samples were prepared by using a KBr cell. Salt plates were cleaned before the experiments using Acetone. Using a micropipette, a drop of the CWA was place on one salt plate. Then the second plate was put over it and the liqnid was spread into a thin film. Samples were analyzed in a Bruker Vector 22 FUR with a DTGS detector. The Infiared experimental conditions were 20 scans and a 4 cm resolntion. A scanned backgronnd spectmm was acquired before each measurement session using a clean test salt plate at the same instramental conditions used for sample spectra acquisition. All spectra were recorded in absorbance mode. [Pg.202]

Figure 3.12 IR absorbance spectra (after vector normalization and in arbitrary units) obtained via SR (in red) or conventional source (in blue) from a single cell area of 5 gm x 5 gm. Experiment performed at Diamond beamline B22 in reflection mode using the 74 x objective, resolution 4cm and 128 scans. Figure 3.12 IR absorbance spectra (after vector normalization and in arbitrary units) obtained via SR (in red) or conventional source (in blue) from a single cell area of 5 gm x 5 gm. Experiment performed at Diamond beamline B22 in reflection mode using the 74 x objective, resolution 4cm and 128 scans.
Thermal excitation of this mode leads at room temperature to the flipping of the buckled dimer such that temporarily averaging techniques such as scanning tunneling microscopy (STM) observe a symmetric dimer. For further discussion of the surface phonons, which are localized mainly within the first two atomic layers, it is illustrative to consider that in a simpHfied approach one expects 12 different modes at a given wave vector. This results from the three degrees of freedom, namely, motion in x, y, and z direction, per four atoms (in the first and second Si layer) within the (2x1) unit cell. The 12 phonon modes at the F point are sketched in Figure 8.2.25 [58]. Four modes, Aj — are polarized shear horizontally with respect to the mirror plane, which contains the Si-Si dimer bond and the surface... [Pg.345]

In the raster mode, all voxels in a cubic volume that contains the microstructure are scanned by the actual/virtual laser focal spot, depending on having the shutter ON (actual)/OFF (virtual). In the vector mode, the laser focus directly traces the profile to be defined. Figure 31a and b respectively illustrate how a character s could be scanned with the two modes. Apparently the vector mode requires a smaller number of voxels. Depending on the structures, variations and combinations of these two basic modes could be used. [Pg.228]


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See also in sourсe #XX -- [ Pg.749 ]




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SCAN mode

Scanning modes

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