Journal ArticleDOI
Photoluminescence of Gold Nanorods: Purcell Effect Enhanced Emission from Hot Carriers.
Yi-Yu Cai,Jun Liu,Lawrence J. Tauzin,Da Huang,Eric Sung,Hui Zhang,Anneli Joplin,Wei-Shun Chang,Peter Nordlander,Stephan Link +9 more
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TLDR
It is demonstrated, experimentally and theoretically, that the photon emission from gold nanorods can be viewed as a Purcell effect enhanced radiative recombination of hot carriers and the main photoluminescence peak coinciding with the longitudinal surface plasmon resonance.Abstract:
We demonstrate, experimentally and theoretically, that the photon emission from gold nanorods can be viewed as a Purcell effect enhanced radiative recombination of hot carriers. By correlating the single-particle photoluminescence spectra and quantum yields of gold nanorods measured for five different excitation wavelengths and varied excitation powers, we illustrate the effects of hot carrier distributions evolving through interband and intraband transitions and the photonic density of states on the nanorod photoluminescence. Our model, using only one fixed input parameter, describes quantitatively both emission from interband recombination and the main photoluminescence peak coinciding with the longitudinal surface plasmon resonance.read more
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Gold Nanorods: The Most Versatile Plasmonic Nanoparticles
TL;DR: In this paper, the authors comprehensively summarize the latest progress on gold nanorods, the most versatile anisotropic plasmonic NPs, and outline an extensive catalogue of Au-NR-based structures with tailored architectures and special functionalities.
Journal ArticleDOI
Ultrabright fluorescent nanoscale labels for the femtomolar detection of analytes with standard bioassays
Jingyi Luan,Anushree Seth,Rohit Gupta,Zheyu Wang,Priya Rathi,Sisi Cao,Hamed Gholami Derami,Rui Tang,Baogang Xu,Samuel Achilefu,Jeremiah J. Morrissey,Srikanth Singamaneni +11 more
TL;DR: It is shown that a plasmonic nanoscale construct serving as an ‘add-on’ label for a broad range of bioassays improves their signal-to-noise ratio and dynamic range without altering their workflow and readout devices.
Journal ArticleDOI
Molecular Affinity Agents for Intrinsic Surface-Enhanced Raman Scattering (SERS) Sensors.
Victoria M. Szlag,Rebeca S. Rodriguez,Jiayi He,Natalie V. Hudson-Smith,Hyunho Kang,Ngoc D. B. Le,Theresa M. Reineke,Christy L. Haynes +7 more
TL;DR: The materials used as affinity agents to create surface-enhanced Raman spectroscopy (SERS) sensors are reviewed, including those affinity agents that facilitate the intrinsic detection of targets relevant to biology, medicine, national security, environmental protection, and food safety.
Journal ArticleDOI
Biomedical Applications of Functionalized Gold Nanoparticles: A Review
TL;DR: In this paper, a review of the processes of functionalization of gold nanoparticles and their potential biomedical applications is presented. But, the authors focus on new progress in processes of the functionalisation of AuNPs and their possible biomedical applications.
Journal ArticleDOI
Multifunctionality of gold nanoparticles: Plausible and convincing properties.
TL;DR: A state-of-the-art review of the role of unique properties of AuNPs in multifunctionality and its various applications, including antimicrobial, anticancer, drug and gene delivery, sensing applications and imaging.
References
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Journal ArticleDOI
Plasmon-induced hot carrier science and technology
TL;DR: Recent advances in the understanding and application of plasmon-induced hot carrier generation are discussed and some of the exciting new directions for the field are highlighted.
Journal ArticleDOI
Photodetection with Active Optical Antennas
TL;DR: An active optical antenna-diode combines the functions of light-harvesting and excited-electron injection, and is a highly compact, wavelength-resonant, and polarization-specific light detector, with a spectral response extending to energies well below the semiconductor band edge.
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An autonomous photosynthetic device in which all charge carriers derive from surface plasmons
TL;DR: An efficient, autonomous solar water-splitting device based on a gold nanorod array in which essentially all charge carriers involved in the oxidation and reduction steps arise from the hot electrons resulting from the excitation of surface plasmons in the nanostructured gold.
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Using binary surfactant mixtures to simultaneously improve the dimensional tunability and monodispersity in the seeded growth of gold nanorods.
TL;DR: The CTAB-NaOL binary surfactant mixture overcomes the difficulty of growing uniform thick gold NRs often associated with the single-component CTAb system and greatly expands the dimensions of goldNRs that are accessible through a one-pot seeded growth process.