Suspended Nanowires
Nanowires are made in a laboratory either through suspension or deposition. A suspended nanowire is created in a vacuum chamber, made by chemically etching a bigger wire, by blasting a larger wire with high energy particles, or by pushing a nanoprobe's tip into the soft surface of a partly melted metal and pulling it back to get a nanowire like the gooey mozzarella cheese that sticks to your fork in a long thread after pulling it back from a hot pizza. Figure 9-4 Nanowires can be made from...
Nanowires
As great as nanotubes' qualities are, fabrication methods that purify, untangle, straighten, and sort nanotubes are a lot more complex than growing large, silicon crystals. Building circuits with nanotubes is still a technical challenge that will keep scientists and engineers busy for quite a while. A nanowire has dimensions of a few nanometers 10 9 m . At this size, quantum mechanical effects are in play, so these wires are also known as quantum wires. Much easier to work with, silicon...
Fluid Flow
The super small size of nanotubes allows them to pierce the skin painlessly always a plus , especially for people who have to check their blood several times a day, such as Type II diabetes patients. TheraFuse, Inc., is an emerging technology company that designs and develops infusion systems for delivering pharmaceutical and biopharmaceutical liquids. Since 2001, TheraFuse has created products that measure various fluid flow rates during therapeutic drug infusion e.g., very low insulin...
Gold Nanoshells
Figure 6-6 Gold-coated nanoshells are simple yet effective nanotechnology agents. Nanoparticles with a silica glass core and gold shell have been designed to absorb light wavelengths in the near-infrared i.e., in the total spectrum of light where light's penetration through tissue is greatest. Figure 6-7 shows the different wavelengths of the spectrum. The visible part of the spectrum is further divided according to color, with red at the long wavelength end and violet at the short wavelength...
Nomenclature
Nomenclature is the naming of things. In the scientific world, an international naming system exists for both chemistry and biology. In the chemical world, chemical nomenclature is used to communicate specifics about different chemicals and compounds. Chemical nomenclature is the standardized system used to name chemical compounds. Chemical symbols, first based on Latin words, are used as an elemental code, because using the full name for a lot of chemicals can take a lot of paper or a lot of...
Plenty of Room at the Bottom
On December 29, 1959, Professor Richard Feynman a 1965 Nobel Prize winner in physics presented a lecture entitled There's Plenty of Room at the Bottom during the annual meeting of the American Physical Society at the California Institute of Technology Caltech . He described a field that few researchers had thought much about, let alone investigated. Feynman presented the idea of manipulating and controlling things on an extremely small scale by building and shaping matter one atom at a time. He...