Journal
SCIENCE
Volume 319, Issue 5868, Pages 1370-1374Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1153307
Keywords
-
Categories
Funding
- NINDS NIH HHS [R21 NS053798-02, R21 NS053798] Funding Source: Medline
Ask authors/readers for more resources
Generation, investigation, and manipulation of nanostructured materials are of fundamental and practical importance for several disciplines, including materials science and medicine. Recently, atmospheric new particle formation in the nanometer- size range has been found to be a global phenomenon. Still, its detailed mechanisms are mostly unknown, largely depending on the incapability to generate and measure nanoparticles in a controlled way. In our experiments, an organic vapor ( n- propanol) condenses on molecular ions, as well as on charged and uncharged inorganic nanoparticles, via initial activation by heterogeneous nucleation. We found a smooth transition in activation behavior as a function of size and activation to occur well before the onset of homogeneous nucleation. Furthermore, nucleation enhancement for charged particles and a substantial negative sign preference were quantitatively detected.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available