PMID- 16375376
OWN - NLM
STAT- MEDLINE
DCOM- 20060821
LR  - 20071114
IS  - 1520-6106 (Print)
IS  - 1520-5207 (Linking)
VI  - 109
IP  - 50
DP  - 2005 Dec 22
TI  - Photochemical interaction of polystyrene nanospheres with 193 nm pulsed laser 
      light.
PG  - 23905-10
AB  - The photochemical interaction of 193 nm light with polystyrene nanospheres is 
      used to produce particles with a controlled size and morphology. Laser fluences 
      from 0 to 0.14 J/cm2 at 10 and 50 Hz photofragment nearly monodisperse 110 nm 
      spherical polystyrene particles. The size distributions before and after 
      irradiation are measured with a scanning mobility particle sizer (SMPS), and the 
      morphology of the irradiated particles is examined with a transmission electron 
      microscope (TEM). The results show that the irradiated particles have a smaller 
      mean diameter ( approximately 25 nm) and a number concentration more than an 
      order of magnitude higher than nonirradiated particles. The particles are formed 
      by nucleation of gas-phase species produced by photolytic decomposition of 
      nanospheres. A nondimensional parameter, the photon-to-atom ratio (PAR), is used 
      to interpret the laser-particle interaction energetics.
FAU - Choi, Jong Hyun
AU  - Choi JH
AD  - Mechanical Engineering Department, University of California, Berkeley, California 
      94720, USA. jhyunc@me.berkeley.edu
FAU - Lucas, Donald
AU  - Lucas D
FAU - Koshland, Catherine P
AU  - Koshland CP
FAU - Sawyer, Robert F
AU  - Sawyer RF
LA  - eng
GR  - P42-ES047050-01/ES/NIEHS NIH HHS/United States
PT  - Journal Article
PT  - Research Support, N.I.H., Extramural
PL  - United States
TA  - J Phys Chem B
JT  - The journal of physical chemistry. B
JID - 101157530
RN  - 0 (Polystyrenes)
SB  - IM
MH  - *Lasers
MH  - Microscopy, Electron, Transmission/methods
MH  - Nanostructures/*chemistry/*radiation effects
MH  - Particle Size
MH  - Photochemistry
MH  - Polystyrenes/*chemistry/*radiation effects
MH  - Sensitivity and Specificity
MH  - Surface Properties
MH  - *Ultraviolet Rays
EDAT- 2005/12/27 09:00
MHDA- 2006/08/22 09:00
CRDT- 2005/12/27 09:00
PHST- 2005/12/27 09:00 [pubmed]
PHST- 2006/08/22 09:00 [medline]
PHST- 2005/12/27 09:00 [entrez]
AID - 10.1021/jp0540611 [doi]
PST - ppublish
SO  - J Phys Chem B. 2005 Dec 22;109(50):23905-10. doi: 10.1021/jp0540611.