51 citations · 55 across the 3 of their papers we have counts for
3 papers
physics.ins-det2024★ 2 cited
Reciprocity in laser ultrasound revisited: Is wavefield characterisation by scanning laser excitation strictly reciprocal to that by scanning laser detection?
Bernd Köhler, Yuui Amano, Frank Schubert +1
The common believe about strict measurement reciprocity between scanning laser detection and scanning laser excitation is disproved by a simple experiment. Nevertheless, a deeper s…
eess.SP2023★ 2 cited
Application of reciprocity for facilitation of wave field visualization and defect detection
Bernd Köhler, Kanta Takahashi, Kazuyuki Nakahata
The motion visualization in a structural component was studied for defect detection. Elastic motions were excited by hammer impacts at multiple points and received by an accelerome…
cond-mat.mtrl-sci2009★ 51 cited
Graphene on insulating crystalline substrates
S. Akcoeltekin, M. El Kharrazi, B. Koehler +2
We show that it is possible to prepare and identify ultra--thin sheets of graphene on crystalline substrates such as SrTiO, TiO, AlO and CaF by standard techniq…