TITLE

Nonlinear optical switching behavior of Au nanocubes and nano-octahedra investigated by femtosecond Z-scan measurements

AUTHOR(S)
Yih Hong Lee; Yongli Yan; Polavarapu, Lakshminarayana; Qing-Hua Xu
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p023105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Two types of gold nanoparticles, nanocubes and nano-octahedra were prepared and their nonlinear absorption properties were investigated by using femtosecond open aperture Z-scan experiments. Both nanocubes and nano-octahedra exhibited a shift from saturable absorption (SA) to reverse saturable absorption (RSA) at higher excitation intensities. The SA behavior was ascribed to ground state plasmon band bleaching and RSA was ascribed to excited state absorption and two-photon absorption of these materials. The competition of different processes is responsible for the observed switching behavior.
ACCESSION #
43277406

 

Related Articles

  • Ultra-low thermal conductivity of ellipsoidal TiO2 nanoparticle films. Hopkins, Patrick E.; Mittal, Manish; Phinney, Leslie M.; Grillet, Anne M.; Furst, Eric M. // Applied Physics Letters;9/26/2011, Vol. 99 Issue 13, p133106 

    We report on the thermal conductivity of a series of convectively assembled, anisotropic titania (TiO2) nanoparticle films. The TiO2 films are fabricated by flow coating a suspension of ellipsoidal colloidal nanoparticles, resulting in structured films with tailored orientational order. The...

  • Preparation of Pt—CeO2/MWNT nano-composites by reverse micellar method for methanol oxidation. Dao-Jun Guo; Shu-Kun Cui; Hui Sun // Journal of Nanoparticle Research;Apr2009, Vol. 11 Issue 3, p707 

    Abstract  We report the preparation of Pt–CeO2 nanoparticles on the multi-walled carbon nanotubes (MWNTs) by a reverse micellar method. Transmission electron microscopy (TEM) analysis indicated that well-dispersed small Pt–CeO2 nanoparticles were formed on the MWCNTs. X-ray...

  • Patterning of Gold Nanoparticles on DNA Self-Assembled Scaffolds. Immensee Cheng; Bryan Wei; Xunyun Zhang; Yongjian Wang; Yongli Mi // Research Letters in Nanotechnology;2008, p1 

    We report a method of patterning the 1D and 2D arrays of gold nanoparticles on the DNA self-assembled scaffolds. The 5nm gold nanoparticles were well positioned at the center of each 4 × 4 tile motif of the DNA scaffold. The precisely located gold particles can form 1D and 2D arrays. This...

  • Effect of Silver Addition on the Ethanol-Sensing Properties of Indium Oxide Nanoparticle Layers: Optical Absorption Study. Singh, Vidya Nand; RajMehta, Bodh; Joshi, Rakesh Kumar; Kruis, Frank Einar // Journal of Nanomaterials;2007 Special Issue, p1 

    In2O3 and In2O3:Ag nanoparticle layers have been deposited using a two-stepmethod consisting of chemical capping and dip coating techniques. The result of optical absorption analysis of In2O3:Ag samples shows the presence of Ag2O and Ag in air-annealed and vacuum-annealed samples, respectively....

  • A versatile approach for the fabrication of Au hollow nanoparticles based on poly(styrene- co-2-aminoethyl methacrylate) template. Xiaofeng Wang; Yiwang Chen; Weihua Zhou; Zhongfu Huang; Zupeng Guo; Yuehui Hu // Journal of Materials Science;Sep2009, Vol. 44 Issue 17, p4710 

    The hollow Au nanospheres were successfully prepared by the template method. The poly(styrene- co-2-aminoethyl methacrylate hydrochloride) (P(St- co-AEMH)) nanoparticles synthesized by the emulsion polymerization were used as the templates. After coating by Au colloidal nanoparticles and the...

  • Growth and assembly of monodisperse Ag nanoparticles by exchanging the organic capping ligands. Chenhui Hao; Dingsheng Wang; Wen Zheng; Qing Peng // Journal of Materials Research;Feb2009, Vol. 24 Issue 2, p10 

    Nearly monodisperse Ag nanoparticles capped with octadecylamine were prepared by direct thermal decomposition of silver nitrate in octadecylamine. Then the "oriented attachment" assembly process of these monodisperse nanoparticles was exhibited by exchanging the organic capping ligands, and Ag...

  • Energetic semiconductor bridge device incorporating Al/MoOx multilayer nanofilms and negative temperature coefficient thermistor chip. Peng Zhu; Jianshe Jiao; Ruiqi Shen; Yinghua Ye; Shuai Fu; Dongle Li // Journal of Applied Physics;2014, Vol. 115 Issue 19, p194502-1 

    The design, fabrication, and characterization of an energetic semiconductor bridge device are presented. The device consists of a semiconductor bridge heating element, which has been selectively coated with Al/MoOx multilayer nanofilms to enhance ignition of a conventional pyrotechnics....

  • Mazda breakthrough on catalyst technology.  // Automotive Manufacturing Solutions;May/Jun2008, p12 

    The article reports on the development by Mazda of a catalyst for cars that reduces the amounts of platinum and palladium used. It uses precious metal particles that are less than 5 nanometers in diameter. Since the metal particles are embedded in fixed positions, there is no agglomeration of...

  • Electrochemical in-vivo sensors using nanomaterials made from carbon species, noble metals, or semiconductors. Zhang, Limin; Wang, Jinglong; Tian, Yang // Microchimica Acta;Oct2014, Vol. 181 Issue 13/14, p1471 

    Electrochemical analytical methods have the advantages of simplicity, direct measurements, and ease of miniaturization which pave the way for real time detection and sensing. However, the complexity of living systems usually requires electrochemical sensors to display high selectivity,...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics