<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Mohamed, MB</style></author><author><style face="normal" font="default" size="100%">Volkov, V. V.</style></author><author><style face="normal" font="default" size="100%">Link, Stephan</style></author><author><style face="normal" font="default" size="100%">El-Sayed, Mostafa A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The &#039;lightning&#039; gold nanorods: fluorescence enhancement of over a million compared to the gold metal</style></title><secondary-title><style face="normal" font="default" size="100%">Chemical Physics Letters</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2000</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Feb</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">6</style></number><volume><style face="normal" font="default" size="100%">317</style></volume><pages><style face="normal" font="default" size="100%">517-523</style></pages><isbn><style face="normal" font="default" size="100%">0009-2614</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Gold nanorods capped with micelles and having an aspect ratio of 2.0-5.4 are found to fluoresce with a quantum yield which is over a million times that of the metal. For rods of the same width, the yield is found to increase quadratically while the wavelength maximum increases linearly with the length. We assign this emission to the electron and hole interband recombination. The increase in the emission yield results from the enhancement effect of the incoming and outgoing electric fields via coupling to the surface plasmon resonance in the rods. This is similar to the previously proposed fluorescence and the Raman enhancement on noble metal rough surfaces. (C) 2000 Published by Elsevier Science B.V. All rights reserved.</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000085374100001</style></accession-num><notes><style face="normal" font="default" size="100%">Mohamed, MB Volkov, V Link, S El-Sayed, MA</style></notes><electronic-resource-num><style face="normal" font="default" size="100%">10.1016/s0009-2614(99)01414-1</style></electronic-resource-num></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Link, Stephan</style></author><author><style face="normal" font="default" size="100%">Burda, Clemens</style></author><author><style face="normal" font="default" size="100%">Mohamed, MB</style></author><author><style face="normal" font="default" size="100%">Nikoobakht, Babak</style></author><author><style face="normal" font="default" size="100%">El-Sayed, Mostafa A</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Laser photothermal melting and fragmentation of gold nanorods: Energy and laser pulse-width dependence</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Physical Chemistry A</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1999</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Mar</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">9</style></number><volume><style face="normal" font="default" size="100%">103</style></volume><pages><style face="normal" font="default" size="100%">1165-1170</style></pages><isbn><style face="normal" font="default" size="100%">1089-5639</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We studied the shape transformation (by use of TEM and optical absorption spectroscopy) of gold nanorods in micellar solution by exposure to laser pulses of different pulse width (100 fs and 7 ns) and different energies (mu J to mJ) at 800 nm, where the longitudinal surface plasmon oscillation of the nanorods absorb. At moderate energies, the femtosecond irradiation melts the nanorods to near spherical particles of comparable volumes while the nanosecond pulses fragment them to smaller near-spherical particles. At high energies, fragmentation is also observed for the femtosecond irradiation. A mechanism involving the rate of energy deposition as compared to the rate of electron-phonon and phonon-phonon relaxation processes is proposed to determine the final fate of the laser-exposed nanorods, i.e., melting or fragmentation.</style></abstract><accession-num><style face="normal" font="default" size="100%">WOS:000079150000001</style></accession-num><notes><style face="normal" font="default" size="100%">Link, S Burda, C Mohamed, MB Nikoobakht, B El-Sayed, MA</style></notes><electronic-resource-num><style face="normal" font="default" size="100%">10.1021/jp983141k</style></electronic-resource-num></record></records></xml>