jp9835014_si_001.pdf (77.33 kB)
Strong Optical Limiting of Silver-Containing Nanocrystalline Particles in Stable Suspensions
journal contribution
posted on 1998-12-11, 00:00 authored by Ya-Ping Sun, Jason E. Riggs, Harry W. Rollins, Radhakishan GuduruMetal and metal sulfide nanoparticles are prepared using a method that is based on the rapid expansion of
supercritical fluid solution (RESS) into a liquid solution and characterized using transmission electron
microscopy and X-ray diffraction methods. The nanoparticles form solution-like stable suspensions in the
presence of a stabilization agent such as poly(N-vinyl-2-pyrrolidone) (PVP) polymer. The stable suspensions
allow systematic nonlinear optical measurements. The nanocrystalline silver metal and silver sulfide particles
in PVP polymer-stabilized ethanol suspensions of high linear transmittance exhibit excellent optical limiting
properties, with the optical limiting responses toward nanosecond laser pulses at 532 nm being much stronger
than those of benchmark materials [60]fullerene and chloroaluminum phthalocyanine in solution. A comparison
of the results with those of stable suspensions of other nanoparticles including cadmium sulfide, lead sulfide,
and nickel suggests that the optical limiting properties are unique to the nanoscopic silver-containing materials.
Mechanistic issues concerning the optical limiting performance of the silver-containing nanocrystalline particles
are discussed, and a nonlinear absorption mechanism is proposed.
History
Usage metrics
Categories
Keywords
Stable Suspensions MetalsuspensionmaterialStrong OpticalMechanistic issuessilver sulfide particlesnanosecond laser pulsescadmium sulfideRESSmethodchloroaluminum phthalocyaninetransmittance exhibitPVPtransmission electron microscopy532 nmstabilization agentmetal sulfide nanoparticlesnanocrystalline silver metalfluid solutionnonlinear absorption mechanism
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC