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Top 11 Questions from the 2015 Guadalupe Workshops



1.      What determines the catalytic efficiency of free and supported catalyst nanoparticles for nanotube nucleation and growth?          

2.      Is chirality determined during nucleation or growth (in high and low-T methods)?           

3.      What factors determine the diameter, chirality, number of walls, and defects in nanotubes during nucleation and growth?          

4.      What are the reactive species (including oxidants and promoters) and the chemical reaction pathways and dynamics leading to the effective nucleation, growth, and termination of carbon nanotubes

5.      What is the nature of the carbon species near the nanoparticle/nanotube interface (e.g. dimers dissolved within, or on the surface of) and the insertion reactions for carbon incorporation?          

6.      How does the nature and geometry of the catalyst support alter the mechanisms of nanotube nucleation, growth and chirality selection

7.      How do the phases and crystalline orientations of nanoscale catalyst particles affect nanotube diameters, nucleation and growth kinetics, and chirality in both high- and low-temperature synthesis methods?      

8.      How do collective effects within evolving nanotube architectures affect synthesis dynamics ?

9.      What are the mechanisms for growth termination?                       

10.  What are the rate-limiting steps in SWNT growth?            

*BONUS*  What "killer application" of SWCNTs will drive future synthesis research?