Laser fabrication of Au nanorod aggregates microstructures assisted by two-photon polymerization.

We demonstrate fabrication of Au nanorod aggregates microstructures by means of a femtosecond near-infrared laser. The laser light was tightly focused into colloidal Au nanorods dispersed in photopolymerizable metyl-methacrylate (MMA) compound to induce two-photon polymerization (TPP). TPP of MMA glued the nanorods together to form solid microstrucures of aggregates. The laser light excited a local surface plasmon, resulting in confinement of TPP in the vicinity of nanorods. Concurrenly occurring optical accumulation of nanorods created a unique mechanism for the formation of nanorod aggregates into desired microstructures. This technique would be a clue for a novel micro/nanofabrication method for plasmonic materials and devices.

[1]  Philippe Guyot-Sionnest,et al.  Optical trapping and alignment of single gold nanorods by using plasmon resonances. , 2006 .

[2]  Satoshi Kawata,et al.  Finer features for functional microdevices , 2001, Nature.

[3]  D. P. Fromm,et al.  Toward nanometer-scale optical photolithography: utilizing the near-field of bowtie optical nanoantennas. , 2006, Nano letters.

[4]  G. Wurtz,et al.  Plasmonic nanorod metamaterials for biosensing. , 2009, Nature materials.

[5]  Wei Li,et al.  Step-Growth Polymerization of Inorganic Nanoparticles , 2010, Science.

[6]  Peter J. Pauzauskie,et al.  Optical trapping and integration of semiconductor nanowire assemblies in water , 2006, Nature materials.

[7]  Olaf Schubert,et al.  Quantitative optical trapping of single gold nanorods. , 2008, Nano letters.

[8]  Satoshi Kawata,et al.  Scaling laws of voxels in two-photon photopolymerization nanofabrication , 2003 .

[9]  G. Wurtz,et al.  Plasmonic Core/Shell nanorod arrays: Subattoliter controlled geometry and tunable optical properties , 2007 .

[10]  N. Nakashima,et al.  Photothermal reshaping of gold nanorods depends on the passivating layers of the nanorod surfaces. , 2008, Langmuir : the ACS journal of surfaces and colloids.

[11]  S. Chu,et al.  Observation of a single-beam gradient force optical trap for dielectric particles. , 1986, Optics letters.

[12]  A. I. Kuznetsov,et al.  Laser fabrication of 2D and 3D metal nanoparticle structures and arrays. , 2010, Optics express.

[13]  Saulius Juodkazis,et al.  Nanoparticle-enhanced photopolymerization , 2009 .

[14]  Jennifer N Cha,et al.  Large-area spatially ordered arrays of gold nanoparticles directed by lithographically confined DNA origami. , 2010, Nature nanotechnology.

[15]  Saulius Juodkazis,et al.  Spatially Selective Nonlinear Photopolymerization Induced by the Near-Field of Surface Plasmons Localized on Rectangular Gold Nanorods , 2009 .

[16]  M. El-Sayed,et al.  Laser-Induced Shape Changes of Colloidal Gold Nanorods Using Femtosecond and Nanosecond Laser Pulses , 2000 .

[17]  Takuro Niidome,et al.  PEG-modified gold nanorods with a stealth character for in vivo applications. , 2006, Journal of controlled release : official journal of the Controlled Release Society.

[18]  S. Kawata,et al.  Subwavelength colour imaging with a metallic nanolens , 2008 .

[19]  Mostafa A. El-Sayed,et al.  Preparation and Growth Mechanism of Gold Nanorods (NRs) Using Seed-Mediated Growth Method , 2003 .

[20]  B. Nikoobakht,et al.  種結晶を媒介とした成長法を用いた金ナノロッド(NR)の調製と成長メカニズム , 2003 .

[21]  Xiaohua Huang,et al.  Gold Nanorods: From Synthesis and Properties to Biological and Biomedical Applications , 2009, Advanced materials.

[22]  Min Gu,et al.  Five-dimensional optical recording mediated by surface plasmons in gold nanorods , 2009, Nature.

[23]  Hiroaki Misawa,et al.  Homogeneous nano-patterning using plasmon-assisted photolithography , 2011 .

[24]  Hao Yan,et al.  DNA-templated self-assembly of two-dimensional and periodical gold nanoparticle arrays. , 2006, Angewandte Chemie.

[25]  Paul Mulvaney,et al.  Gold nanorods: Synthesis, characterization and applications , 2005 .

[26]  Catherine J. Murphy,et al.  Seed‐Mediated Growth Approach for Shape‐Controlled Synthesis of Spheroidal and Rod‐like Gold Nanoparticles Using a Surfactant Template , 2001 .

[27]  Xiu-Dong Sun,et al.  Multidimensional manipulation of carbon nanotube bundles with optical tweezers , 2006 .

[28]  Hiroaki Misawa,et al.  Nanogap-Assisted Surface Plasmon Nanolithography , 2010 .

[29]  C. Dong,et al.  Multiphoton fabrication of freeform polymer microstructures with gold nanorods. , 2010, Optics express.

[30]  N. Scherer,et al.  All-optical patterning of Au nanoparticles on surfaces using optical traps. , 2010, Nano letters.

[31]  Hiroshi Masuhara,et al.  Laser manipulation and fixation of single gold nanoparticles in solution at room temperature , 2002 .

[32]  M. Kim,et al.  Optical bottles: A quantitative analysis of optically confined nanoparticle ensembles in suspension , 2010 .

[33]  C. Dong,et al.  Fabrication of gold nanorods-doped, bovine serum albumin microstructures via multiphoton excited photochemistry. , 2011, Optics express.

[34]  Harry A. Atwater,et al.  Optical pulse propagation in metal nanoparticle chain waveguides , 2003 .

[35]  Hai-Qing Lin,et al.  Angle- and energy-resolved plasmon coupling in gold nanorod dimers. , 2010, ACS nano.

[36]  S. Kawata,et al.  Size dependence of transition temperature in polymer nanowires. , 2008, The journal of physical chemistry. B.

[37]  Mostafa A. El-Sayed,et al.  Self-Assembly of Gold Nanorods , 2000 .

[38]  Satoshi Kawata,et al.  Two-photon photopolymerization as a tool for making micro-devices , 2003 .

[39]  A. Urban,et al.  Laser printing single gold nanoparticles. , 2010, Nano letters.

[40]  John T. Fourkas,et al.  Metal-Enhanced Multiphoton Absorption Polymerization with Gold Nanowires , 2010 .

[41]  Jen-chia Wu,et al.  Organic solvent dependence of plasma resonance of gold nanorods: A simple relationship , 2005 .