| In-situ TEM electrical and
mechanical measurements on nanotubes |
| In-situ TEM setup using a piezo-driven
holder for the analysis of electron transport and deformation
of nanotubes (left) and a representative I-V curve measured
on an individual Boron Nitride nanotube inside TEM (right) |
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| Structure and properties of
filled nanotubes |
| Types and applications of filled nanotubes
analyzed within the Group (left); low- and high-resolution
TEM images of a Fe-Co magnetic alloy filled Carbon nanotube;
the interface between the Fe-Co alloy nanowire and the shielding
nanotube clearly reveals atomic steps on the wire/tube boundary. |
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| Making electrical nanoswitch
based on liquid Ga-filled C nanotube |
| Electrical nanoswitch made of a liquid
Ga-filled Carbon nanotube; (left) the nanotube is placed between
two metal electrodes and a gap in a Ga-filling is made with
the aid of an atomic force microscope tip (1); under heating
the two Ga columns approach each other due to thermal expansion
and finally merge (2-4); two-probe electrical resistance of
the filled tube is measured at various stages of the process
(top-right); when the columns merge the resistance drastically
drops producing a unique switching action. (Low-right) the
process of column approaching recorded in TEM. |
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| Unusual behavior of Indium liquid
in silica nanotubes |
| We succeeded to synthesize silica nanotubes encapsulating indium metal. (Adv. Mater. 16, 37, 2004) Unusual dynamical behaivior can be revealed during 'in-situ' observations in an electron microscope. |
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| Dynamical observation of bending and kinking of BN nanotubes |
| Real-time movies of individual multi-walled Boron Nitride nanotube bending (upper frame) and kinking (low frame) recorded inside a high-resolution 300 kV JEOL-3000F transmission electron microscope using a new fully integrated TEM-AFM piezo-driven holder under continuous tracking of force-displacement values. These results were reported by us in Nano Lett. Vol. 7, No. 7, 2146-2157, 2007: [Golberg D. et al. “Direct force measurements and kinking under elastic deformation of individual multiwalled Boron Nitride nanotubes”]. |
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| Dynamical observation of BN nanotubes |
| Reversible elastic kinking of an individual multi-walled BN nanotube under bending in TEM. |
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| Decomposition through formation of B balls and sudden "explosion" of a multi-walled BN nanotube under biasing to 140 V in STM-TEM |
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| Dynamical observation of C nanotubes |
Stepwise absorption of C multi-walled nanotube inner shell packages by a tungsten
STM electrode under a current flow through the system. |
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| Gradual melting and release of copper from a multi-walled carbon nanotube under Joule-heating and electromigration in the STEM-TEM holder. |
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