منابع مشابه
Carbon Nanotube AFM Probe Technology
The invention of atomic force microscopy (AFM) is having a great impact on various areas, such as nano metrology, materials science, surface science and biology (Binnig et al., 1986). The lateral resolution of AFM is mainly determined by the probe’s shape and physical property, especially the geometry and dimension of the probe end. Conventional AFM probe is pyramidal shape by micro-fabrication...
متن کاملShortening Carbon Nanotube-Tipped AFM Probes
A method is presented to indirectly measure and shorten carbon nantoubes grown from the tips of atomic force microscope (AFM) probes. The measurement component exploits the nanotubes ability to elastically buckle and requires only those signals and actuators available on a standard AFM. The shortening operation is facilitated by electric arcing using a conducting niobium substrate. The shorteni...
متن کاملStructural biology with carbon nanotube AFM probes.
Carbon nanotubes represent ideal probes for high-resolution structural and chemical imaging of biomolecules with atomic force microscopy. Recent advances in fabrication of carbon nanotube probes with sub-nanometer radii promise to yield unique insights into the structure, dynamics and function of biological macromolecules and complexes.
متن کاملMechanisms of single-walled carbon nanotube probe-sample multistability in tapping mode AFM imaging.
When using single-walled carbon nanotube (SWNT) probes to create AFM images of SWNT samples in tapping mode, elastic deformations of the probe and sample result in a decrease in the apparent width of the sample. Here we show that there are two major mechanisms for this effect, smooth gliding and snapping, and compare their dynamics to the case when a conventional silicon tip is used to image a ...
متن کاملNoncontact-AFM imaging of molecular surfaces using single-wall carbon nanotube technology
Single-molecule imaging at nanometre resolution using noncontact AFM has been applied to image a protein complex on mica using single-wall carbon nanotube (CNT) technology. Hydrated RNA polymerase (RNAP)–DNA complex was imaged using constant-amplitude tapping mode AFM. CNT tips (1–2 nm diameter) prepared by chemical vapour phase deposition were mounted onto standard Pt/Ir coated AFM tips. The e...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2009
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(09)70276-7