Content Provider	Taylor & Francis Online
Author	Pippan, Reinhard Hohenwarter, Anton Jakob, Severin Pfeifenberger, Manuel J.
Abstract	The standard preparation technique for micro-sized samples is focused ion beam milling, most frequently using Ga+ ions. The main drawbacks are the required processing time and the possibility and risks of ion implantation. In contrast, ultrashort pulsed laser ablation can process any type of material with ideally negligible damage to the surrounding volume and provides 4 to 6 orders of magnitude higher ablation rates than the ion beam technique. In this work, a femtosecond laser was used to prepare wood samples from spruce for mechanical testing at the micrometre level. After optimization of the different laser parameters, tensile and compressive specimens were produced from microtomed radial-tangential and longitudinal-tangential sections. Additionally, laser-processed samples were exposed to an electron beam prior to testing to study possible beam damage. The specimens originating from these different preparation conditions were mechanically tested. Advantages and limitations of the femtosecond laser preparation technique and the deformation and fracture behaviour of the samples are discussed. The results prove that femtosecond laser processing is a fast and precise preparation technique, which enables the fabrication of pristine biological samples with dimensions at the microscale.
Starting Page	574
Ending Page	583
Page Count	10
File Format	PDF HTM / HTML
ISSN	14686996 18785514
DOI	10.1080/14686996.2017.1360751
Journal	Science and Technology of Advanced Materials
Volume Number	18
Issue Number	1
Language	English
Publisher	Taylor & Francis
Publisher Date	2017-08-22
Access Restriction	Open
Subject Keyword	Ultrashort pulse laser Femtosecond laser Wood Spruce Cellular material Micromechanics Sample preparation Beam damage Fibre debonding Cell wall rupture 10 Engineering and Structural materials 103 Composites 305 Plasma / Laser processing
Content Type	Text
Resource Type	Article
Subject	Materials Science

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