Strong nonlinear photonic responses from microbiologically synthesized tellurium nanocomposites

作者：Liao Kang Shyang^*; Wang Jun; Dias Sampath; Dewald James; Alley Nigel J; Baesman Shaun M; Oremland Ronald S; Blau Werner J; Curran Seamus A

来源：Chemical Physics Letters, 2010, 484(4-6): 242-246.

DOI：10.1016/j.cplett.2009.11.021

A new class of nanomaterials, namely microbiologically-formed nanorods composed of elemental tellurium [Te(0)] that forms unusual nanocomposites when combined with poly(m-phenylenevinylene-co-2,5-dioctoxy-phenylenevinylene) (PmPV) is described. These bio-nanocomposites exhibit excellent broadband optical limiting at 532 and 1064 nm. Nonlinear scattering, originating from the laser induced solvent bubbles and microplasmas, is responsible for this nonlinear behavior. The use of bacterially-formed Te(0) when combined with an organic chemical host (e. g., PmPV) is a new green method of nanoparticle syntheses. This opens the possibilities of using unique, biologically synthesized materials to advance future nanoelectronic and nanophotonic applications.

• 出版日期2010-1-7