TY - JOUR
T1 - Selective nanoparticle heating
T2 - Another form of nonequilibrium in dusty plasmas
AU - Mangolini, Lorenzo
AU - Kortshagen, Uwe
PY - 2009/2/2
Y1 - 2009/2/2
N2 - Nanoparticles produced in low-temperature plasmas (LTPs) are often found with crystalline structure, which suggests rather high temperatures during synthesis. This even applies to particles of high-melting-point materials, which is surprising, because the gas temperature in LTPs is often close to room temperature and particles may reside in the plasma only for a few milliseconds. In this paper, we present a numerical study of nanoparticle heating in plasmas through energetic surface reactions. We find that, under realistic plasma conditions, particle temperatures can exceed the gas temperature by many hundreds of kelvins. However, as the particle temperature is highly unsteady, it is more reasonable to consider particle temperature distribution functions. The dependence of the particle temperature distribution on particle size and particle density in a dusty LTP is discussed.
AB - Nanoparticles produced in low-temperature plasmas (LTPs) are often found with crystalline structure, which suggests rather high temperatures during synthesis. This even applies to particles of high-melting-point materials, which is surprising, because the gas temperature in LTPs is often close to room temperature and particles may reside in the plasma only for a few milliseconds. In this paper, we present a numerical study of nanoparticle heating in plasmas through energetic surface reactions. We find that, under realistic plasma conditions, particle temperatures can exceed the gas temperature by many hundreds of kelvins. However, as the particle temperature is highly unsteady, it is more reasonable to consider particle temperature distribution functions. The dependence of the particle temperature distribution on particle size and particle density in a dusty LTP is discussed.
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U2 - 10.1103/PhysRevE.79.026405
DO - 10.1103/PhysRevE.79.026405
M3 - Article
AN - SCOPUS:63049125784
SN - 1539-3755
VL - 79
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 2
M1 - 026405
ER -