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Full-Text Articles in Physics
Functionalizing Carbon Nanotube Forests With 1,5-Diaminoaphthalene, Ben Pound, T. Shen
Functionalizing Carbon Nanotube Forests With 1,5-Diaminoaphthalene, Ben Pound, T. Shen
Ben Pound
Carbon Nanotube (CNT) Forests are vertically grown carbon nanotubes. They can be as tall as millimeters, with radii from less than one nanometer (single-walled) to tens of nanometers (multi-walled). Their high surface area to volume ratio provides a unique material system for biosensor applications. However, the CNT surface does not provide covalent bonding sites to many antibodies of interest. One approach is to attach linker molecules with aromatic rings via π-stacking to the CNT surface and activating the linker molecules to bind covalently to specific antibody molecules. Unfortunately, the conventional solution-based functionalization approach often leads to collapse of the CNT …
Carbon Nanotube Growth Via Spray Pyrolysis, Robert Welch Call
Carbon Nanotube Growth Via Spray Pyrolysis, Robert Welch Call
Robert W Call
Spray pyrolysis is a promising method to create carbon nanotube forests (CNFs) on various surfaces. By injecting metallocene-hydrocarbon solutions into a heated quartz reactor, catalyst particles and carbon nanotubes can be formed simultaneously. Factors that affect CNF growth include the precursor concentration, injection rate and duration, carrier gas flow rate, substrate surface, growth temperature, and the composition of gases inside the reactor. The CNF morphologies affected by these factors will be presented and, hopefully, an optimum condition will be found.