Optofluidics The technology can be used for the simultaneous fabrication of integrated optics and micro structures, which is of particular interest for optofluidics, i.e. for labs-on-a-chip and more elaborate femtosecond laser-based optofluidic micro instruments incorporating waveguide networks designed for the real-time field analysis of cells or microorganisms. Figure 7 shows an example of this technology.
Marking and 5D information recordings Increasing storage capacity demands development of other approaches than magnetic and optical hard disks. One of them could be femtosecond laser induced nano gratings, which exhibit anisotropy due to form birefringence. This anisotropy can be characterised by two independent parameters: retardance and slow axis orientation, which can be rewritten with successive pulse sequences, resulting in a rewritable five-dimensional optical memory (figure 8).
As shown, FEMTOPRINT is a breakthrough technology based on the use of a femtosecond laser, which opens exciting new opportunities for a broad variety of micro systems with feature sizes down to the nano scale, created out of glass or other substrates with optical properties.
Figures 5 and 8 courtesy of Optoelectronics Research Centre, University of Southhampton. The remaining figures are courtesy of
Femtoprint.eu Project.
<< Figure 9 >>
FEMTOprint SAis a spin-off of the European Project Femtoprint.
www.femtoprint.eu,
www.femtoprint.ch
35 | commercial micro manufacturing international Vol 6 No.5
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