Problems of Forensic Sciences 2001 Vol. 46 (XLVI) 401-412
THE USE OF ATOMIC FORCE MICROSCOPY TO DETERMINE THE SEQUENCE OF CROSSED LINES
Aita KHANMY-VITAL1, Sandor KASAS2, Giovanni DIETLER3
1Institut de Police Scientifique et de Criminologie, Université de Lausanne, Lausanne, Switzerland
2Institut de Biologie Cellulaire et de Morphologie, Université de Lausanne, Lausanne, Switzerland
3Institut de la Physique de la Matière Condensée, Université de Lausanne, Lausanne, Switzerland
Streszczenie
The temporal order in which the lines are written can, in most cases, be established by optical and electron microscopy techniques. During the last years, new, non-destructive microscopical technologies, such as scanning probe microscopy [5], have been developed which offer new possibilities for surfaces analysis at high magnification. The aim of this study was to explore if such a technique could be used to line crossing problems. According to the nature of the ink lines, the exploration of this technique has been performed by an atomic force microscope (AFM) [1]. Only the imaging abilities of this instrument were investigated. The obtained AFM images show the same qualitative information compared to the SEM images. Consequently, the sequence of two crossed lines can be determined by this visualisation techniqu.
Słowa kluczowe
Atomic force microscopy; AFM; Paper; Ink; Line crossing; Intersection; SEM; Document examination.