Optical fibre precision positioning at cryogenic conditions

Single photon detectors are an important optical sensing tool in many industries. However, these highly efficient detectors suffer from variations in the size of an optical cavity when cooling down to 3K. An active positioning system is therefore required to correct the relative position of the fibre to the detector, so an optimal and...

Positioning Pd catalyst particles for carbon nanotube growth using charge patterns created with a scanning electron microscope

Positioning of charged nanoparticles with the help of charge patterns in an insulator substrate is a known method. However, the creation of charge patterns with a scanning electron microscope for this is relatively new. Here a scanning electron microscope is used for the creation of localized charge patterns in an insulator, while a glowing wire...

Nanopositioning of a diamond nanocrystal containing a single nitrogen-vacancy defect center

Precise control over the position of a single quantum object is important for many experiments in quantum science and nanotechnology. We report on a technique for high-accuracy positioning of individual diamond nanocrystals. The positioning is done with a home-built nanomanipulator under real-time scanning electron imaging, yielding an accuracy...

Piezo-driven stages for nanopositioning with extreme stability: Theoretical acpects and practical design considerations