%0 Journal Article %J ACS Catalysis %D 2020 %T Electrosynthesis of Ammonia Using Porous Bimetallic Pd–Ag Nanocatalysts in Liquid- and Gas-Phase Systems %A Nazemi, M. %A Ou, P. %A Alabbady, A. %A Soule, L. %A Liu, A. %A Song, J. %A Sulchek, T.A. %A Liu, M. %A El-Sayed, M. A. %K display %B ACS Catalysis %G eng %& 10197 %0 Journal Article %J The journal of physical chemistry letters %D 2018 %T Electrochemical Synthesis of Ammonia from N2 and H2O under Ambient Conditions Using Pore-Size-Controlled Hollow Gold Nanocatalysts with Tunable Plasmonic Properties %A M. Nazemi %A El-Sayed, M. A. %B The journal of physical chemistry letters %G eng %0 Journal Article %J Nano Energy %D 2018 %T Enhancing the rate of electrochemical nitrogen reduction reaction for ammonia synthesis under ambient conditions using hollow gold nanocages %A M. Nazemi %A Panikkanvalappil, S. R. %A El-Sayed, M. A. %K display %B Nano Energy %G eng %0 Journal Article %J Chemical Science %D 2016 %T Elucidation of Ultraviolet RadiationInduced Cell Responses and Intracellular Biomolecular Dynamics in Mammalian Cells Using Surface-Enhanced Raman Spectroscopy %A Panikkanvalappil, S. R. %A Hira, S. M. %A El-Sayed, M. A. %B Chemical Science %G eng %0 Journal Article %J Acs Applied Materials & Interfaces %D 2014 %T Energy-Transfer Efficiency in Eu-Doped ZnO Thin Films: The Effects of Oxidative Annealing on the Dynamics and the Intermediate Defect States %A Ahmed, S. M. %A Szymanski, P. %A El-Nadi, L. M. %A El-Sayed, M. A. %B Acs Applied Materials & Interfaces %V 6 %P 1765-1772 %8 Feb %@ 1944-8244 %G eng %M WOS:000331493200059 %R 10.1021/am404662k %0 Journal Article %J Acs Nano %D 2013 %T Exploiting the Nanoparticle Plasmon Effect: Observing Drug Delivery Dynamics in Single Cells via Raman/Fluorescence Imaging Spectroscopy %A Kang, B. %A Afifi, M. M. %A Austin, Lauren %A El-Sayed, M. A. %B Acs Nano %V 7 %P 7420-7427 %8 Aug %@ 1936-0851 %G eng %M WOS:000323810600108 %! ACS Nano %R 10.1021/nn403351z %0 Journal Article %J Journal of the American Chemical Society %D 2012 %T Effect of the Dielectric Constant of the Surrounding Medium and the Substrate on the Surface Plasmon Resonance Spectrum and Sensitivity Factors of Highly Symmetric Systems: Silver Nanocubes %A Mahmoud, M A %A Chamanzar, M. %A Adibi, A. %A El-Sayed, M. A. %X Silver nanocubes (AgNCs), 60 nm, have four extinction surface plasmon resonance (SPR) peaks. The finite difference time domain (FDTD) simulation method is used to assign the absorption and scattering peaks and also to calculate the plasmon field intensity for AgNCs. Because AgNCs have a highly symmetric cubic shape, there is a uniform distribution of the plasmon field around them, and they are thus sensitive to asymmetric dielectric perturbations. When the dielectric medium around a nanoparticle is changed anisotropically, either by placing the particle on a substrate or by coating it asymmetrically with a solvent, the plasmon field is distorted, and the plasmonic absorption and scattering spectra could shift differently. For the 60 nm AgNC, we found that the scattering resonance peak shifted more than the absorption peak. This changes the extinction bandwidth of these overlapping absorption and scattering bands, and consequently the figure of merit of the nanoparticle, as a localized SPR sensor, no longer has a constant value. %B Journal of the American Chemical Society %V 134 %P 6434-6442 %8 Apr %@ 0002-7863 %G eng %M WOS:000302524800053 %R 10.1021/ja300901e