Nanoparticle manipulation with a carbon fiber tip in an electron microscope for μ -SQUID magnetometry
Source abstract
Abstract
Abstract We report a carbon-fiber-tip based nanomanipulation system integrated into a scanning electron microscope for individual nanoparticle (NP) manipulation on a surface. Electrochemically etched amorphous carbon fiber tips with excellent mechanical rigidity and sub-100 nm apex radii effectively reduce the van der Waals adhesion and enable reliable positioning of about 100 nm or larger size NPs with about 100 nm precision. This system combines a piezoelectric bimorph for vertical tip motion, a four-quadrant piezo-tube for two-dimensional fine tip control and a two-dimensional piezoelectric walker for coarse lateral translation. Using this setup, we successfully position single Fe {}3 O {}4 magnetic NPs on micron sized superconducting quantum interference devices for optimal magnetic coupling between them and probe a NP’s magnetism.
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Research context
OpenAlex topics: Advanced Electron Microscopy Techniques and Applications · Force Microscopy Techniques and Applications · Carbon Nanotubes in Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Indian Institute of Technology Kanpur
IRIG-PHELIQS
Institut Néel
Funding
IIT Kanpur · SERB
References (44)
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