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Surface profiling of combustion chamber deposits using aperture correlation confocal microscopy
Author(s) -
; Reed,
F. F. Wilson,
Juškaitis,
Mark A. A. Neil
Publication year - 1998
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1046/j.1365-2818.1998.00335.x
Subject(s) - microscopy , confocal , combustion , confocal microscopy , materials science , microscope , optical microscope , optics , confocal laser scanning microscopy , chemistry , scanning electron microscope , composite material , biomedical engineering , physics , medicine , organic chemistry
The depth discrimination capability of a confocal microscope can be used to generate height‐coded maps of surface topography from reflective surfaces. However, this surface profiling ability is severely limited when black surfaces are examined. In this paper we describe how a new form of confocal microscopy, known as self‐correlating aperture microscopy, can be used to obtain surface topographies from the black carbonaceous deposits found in the combustion chambers of internal combustion engines. The technique is nondestructive and requires no sample preparation. The stereo pair images presented show the range of different morphologies found in combustion deposits generated by different fuel chemistries.