摘要:
Probe structures and fabrication techniques are described. The described probe structures can be used as probes for various applications such as conductance measurement probes, field emitter probes, nanofabrication probes, and magnetic bit writing or reading probes.
摘要:
Nanotube assemblies and methods for manufacturing the same, including one or more protective layers. A nanotube assembly may include a substrate, a nanotube array, formed on the substrate, and a protective layer, formed on a first area of the substrate where the nanotube array is not, the protective layer reducing the formation of nanocones, and promoting the formation of nanotubes, which make up the nanotube array.
摘要:
A mechanically stable and oriented scanning probe tip comprising a carbon nanotube having a base with gradually decreasing diameter, with a sharp tip at the probe tip. Such a tip or an array of tips is produced by depositing a catalyst metal film on a substrate (10 & 12 in FIG. 1(a)), depositing a carbon dot (14 in FIG. 1(b)) on the catalyst metal film, etching away the catalyst metal film (FIG. 1(c)) not masked by the carbon dot, removing the carbon dot from the catalyst metal film to expose the catalyst metal film (FIG. 1(d)), and growing a carbon nanotube probe tip on the catalyst film (16 in FIG. 1(e)). The carbon probe tips can be straight, angled, or sharply bent and have various technical applications.
摘要:
An atomic force microscopy (AFM) nanoprobe comprising a nanocone base and a nanoprobe tip wherein the length to base diameter aspect ratio is at least 3 or more. The AFM nanoprobe tip structure comprises an orientation-controlled (vertical or inclined), high-aspect-ratio nanocone structure without catalyst particles, with a tip radius of curvature of at most 20 nm.
摘要:
This invention discloses novel field emitters which exhibit improved emission characteristics combined with improved emitter stability, in particular, new types of carbide or nitride based electron field emitters with desirable nanoscale, aligned and sharped-tip emitter structures.
摘要:
Nanotube assemblies and methods for manufacturing the same, including one or more protective layers. A nanotube assembly may include a substrate, a nanotube array, formed on the substrate, and a protective layer, formed on a first area of the substrate where the nanotube array is not, the protective layer reducing the formation of nanocones, and promoting the formation of nanotubes, which make up the nanotube array.
摘要:
This invention discloses novel field emitters which exhibit improved emission characteristics combined with improved emitter stability, in particular, new types of carbide or nitride based electron field emitters with desirable nanoscale, aligned and sharped-tip emitter structures.
摘要:
This invention describes unique treatment methods and innovative articles that can be placed in a human or animal body to enable controlled destruction of diseased tissue. The methods include destruction of diseased cells and tissues by magnetically controlled motion and an externally controllable drug delivery process with a capability to start and stop the drug delivery at any time, for any duration. This invention provides two approaches to diseased cell destruction, (1) magneto-mechanical disturbance of cell structure (e.g. cancer cells) for cell lysis and (2) magnetically activated drug release at local regions (e.g. tumors) from a magnetic-particle-containing drug reservoir. The invention also provides combinations of both the above treatments for dual therapy. It further combines one or both of the treatments with magnetic hyperthermia for multifunctional cell destruction therapy. The approaches can be combined with magnetic MRI for monitoring the accuracy of placement as well as for following up the cancer destruction progress and appropriate reprogramming of the magneto-mechanical therapy and remote-controlled drug release.
摘要:
Applicant has discovered that articles comprising inorganic surfaces that are difficult to bond can be more effectively soldered or brazed with a solder or braze containing rare earth elements where the rare earth (RE) elements are substantially kept from contact with air at soldering temperatures, i.e. the RE elements are exposed to air for no more than a few seconds at soldering temperature. This can be efficiently accomplished in several ways. The result is efficient, strong bonding of materials previously considered difficult to bond.