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reflected-light microscopy

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030089
EISBN: 978-1-62708-349-2
.... The more common technique, reflected-light DIC described previously, can be used for resolving similar features. In reflected-light phase-contrast microscopy, phase differences arise from relief on the specimen surfaces. The use of laser dyes for enhancing microcracks is a simple process. It is usually...
Image
Published: 01 January 2000
region of a filiform cell. Tail appears iridescent due to internal reflection. Light microscopy, 60× More
Image
Published: 01 August 1999
appears iridescent due to internal reflection. Light microscopy. 60× More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030211
EISBN: 978-1-62708-349-2
... Fig. 12.7 An area in Fig. 12.5 viewed using reflected-light phase contrast with the same magnification as Fig. 12.6 . Notice the shading on the outer edges of the micrograph due to this contrast technique. Fig. 12.8 Transmitted-light microscopy of the natural fiber composite ultrathin...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030137
EISBN: 978-1-62708-349-2
... Microscopy,” optical microscopy can be used to determine the fiber angles in composites made from unidirectional fiber prepreg materials. Also, it was shown that reflected polarized light can be used to further enhance fiber angle differences. Usually, a composite material can be cross sectioned...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030177
EISBN: 978-1-62708-349-2
... on the particle type and matrix, the phase may be more or less distinguishable using reflected-light techniques. The use of transmitted-light microscopy provides significantly greater detail of the morphology of polymer matrices containing different phases. In Fig. 10.5(b) , it can be seen that there is a high...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850267
EISBN: 978-1-62708-260-0
... (reflected light microscopy) is discussed here. There are two basic types of metallurgical microscopes: the upright microscope and the inverted (Le Chatelier) microscope, where the terms upright and inverted refer to the orientation of the face of the polished specimen that is being examined. In each...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.9781627083492
EISBN: 978-1-62708-349-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
... of processing parameters used for manufacturing composite materials are also elucidated using optical microscopy techniques. For the majority of cases, reflected-light microscopy provides most of the necessary information one would desire. In some cases, however, etchants, stains, or dyes may be required...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110042
EISBN: 978-1-62708-247-1
... and darkfield illumination, and microscope concepts important to liquid crystal techniques. We will discuss solid immersion lenses, infrared and ultraviolet microscopy and finish with laser microscopy techniques such as TIVA and XIVA. Some Words About Light The term Optical Microscopy is commonly limited...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030115
EISBN: 978-1-62708-349-2
... are performed using reflected-light optical microscopy, a sample-preparation technique that enables transmitted-light analysis is extremely valuable ( Ref 1 ). At the ultrathin level, even opaque materials become optically transparent. This preparation is needed to resolve and analyze microstructural features...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030159
EISBN: 978-1-62708-349-2
... and Mounting,” in this book. Most analysis of microcracks in composites can be performed using unmounted samples and reflected-light optical microscopy techniques ( Chapter 5, “Viewing the Specimen Using Reflected-Light Microscopy” ). Figure 9.1 ( a and b ) shows areas of a composite material where...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110196
EISBN: 978-1-62708-247-1
... chapters in this Desk Reference. Passive laser-based methods using reflected light variations through photo-electric interactions as well as passive light emission techniques are also explored in detail in their respective chapters. Photocurrent Generation in Silicon Active photon probing takes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
... of metals requires careful preparation of the surface. Unlike biological samples, metals are opaque and thus require reflected light microscopy (where the impinging light for viewing is reflected off of the specimen surface). In contrast, biological samples are transparent and can be examined by transmitted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030023
EISBN: 978-1-62708-349-2
... the Specimen Using Reflected-Light Microscopy,” in this book. The following steps are recommended to achieve a good mounted specimen without voids or specimen pull-out: Fragile materials, multiple samples, samples with surface features, and thin samples require support to ensure a flat planar surface...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560001
EISBN: 978-1-62708-291-4
... Abstract This chapter explains what some of the terms used in physical metallurgy are intended to mean and how these meanings affect the manner in which the subject is treated throughout the book. light microscopy The wide range of properties that can be obtained in steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110550
EISBN: 978-1-62708-247-1
... the failure analysis process. One non-destructive method to achieve this is with an optical profilometer. The profilometer shines a white light through a lens with purposefully high chromatic aberration [18] . A sensor is used to create a spectrum of the reflected light. The wavelength for which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030223
EISBN: 978-1-62708-349-2
...) Transmitted light, Hoffman modulation contrast. (D) Reflected light, bright-field illumination Fig. 13.2 Ultrathin section of an area of a honeycomb sandwich composite structure showing the effects of core movement during manufacturing and the resulting deformation and separation of the prepreg...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220039
EISBN: 978-1-62708-259-4
... to guarantee traceability. Lighting Whichever photographic technique is used, three aspects related to sample lighting are especially important to ensure good quality photographic images: Uniform lighting and properly oriented light sources Adequate control of reflections and shadows (caused...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220069
EISBN: 978-1-62708-259-4
.... In this technique, the sample is illuminated properly with visible light and the reflected light reaches the observer, as schematically shown in Fig. 5.1 . The resolution that can be achieved depends on the wavelength of the radiation used. For visible light with green color, the resulting resolution...