Widefield NV-Center Quantum Sensing for Non-Destructive Materials Testing
Science for Systems, Band 66
Niklas Philipp Mathes
Hrsg.: Fraunhofer IAF, Freiburg
2025, 154 S., num., mostly col. illus. and tab., Softcover
Sprache: Englisch
Freiburg, Univ., Diss., 2025
Fraunhofer Verlag
ISBN 978-3-8396-2123-3

Inhalt
Most non-destructive testing methods are designed for relatively large construction parts and offer a relatively poor spatial resolution. However, due to progressing miniaturization, material properties on small scales become increasingly relevant. Atomically small quantum sensors, such as the Nitrogen-vacancy center in diamond, open doors to completely new sensing approaches offering a high potential to revolutionize non-destructive testing on small scales.

This work assesses the applicability of widefield Nitrogen-vacancy center magnetic imaging to non-destructive testing. Based on a thin layer of Nitrogen-vacancy centers, the approach allows for rapid quantum sensing with a large field of view and a diffraction limited spatial resolution. Clear changes of the magnetic stray field distribution could be detected after a material sample underwent cyclic loading. The technique is suited to detect early stages of fatigue damage, but also to gain a better understanding of fatigue mechanisms on small scales. Furthermore, cracks and intermetallic phases in non-magnetic materials could be successfully detected underlining the potential for various non-destructive testing applications.

Verfügbare Formate

Softcover
EUR 47.00 (* inkl. MwSt.)
erscheint ca. September 2025