Contact microradiography

Orientation of fibres can be studied by RRIM by contact microradiography. In Fig. 6.12 the polymer matrix shows a typical random distribution. Each individual fibre can be readily seen to be surrounded by a coating of polymer, and exists in a straight needle-like form. Also some fibres are present as undispersed bundles observed by darker circles which represent vertically aligned fibres. 

C.G. Waterfield and J. Peacock, The Application of Contact Microradiography to the Study of Dispersion of Titanium Dioxide Pigment in Solids, Technical Service Report No.D8753GC, BTP Tioxide Ltd., Stockton-on-Tees, UK, (undated). 

Contact microradiography is a method that permits assessment of the length and orientation of glass fibers in composites, although it cannot be used for aramid or graphite fibers. Sections are cut 50 150 L(m thick with a low speed diamond... 

Figure 4 X-ray microradiography (A) contact microscopy, (B) projection microscopy, and (C) inline imaging.

Contact X-ray microradiography or X-ray contact microscopy (XCM) has been applied to the largest range of specimens due to its simple implementation and considerable versatility. The biological sciences are the most important field of applications for XCM. The nonlinearity of resists makes the resist-based contact microscopy unsuitable for quantitative imaging, which considerably limits its application to materials science. However, quite opposite to the... 

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