Plasmofluidic single-molecule surface-enhanced Raman scattering from dynamic assembly of plasmonic nanoparticles
Partha Pratim Patra,Rohit Chikkaraddy,Ravi P. N. Tripathi,Arindam Dasgupta,G. V. Pavan Kumar +4 more
TLDR
By utilizing dual excitation of plasmons at metal-fluid interface, this work creates interacting assemblies of metal nanoparticles, which may be further harnessed in dynamic lithography of dispersed nanostructures and have implications in realizing optically addressable, plasmofluidic, single-molecule detection platforms.Abstract:
Single-molecule surface-enhanced Raman scattering (SM-SERS) is one of the vital applications of plasmonic nanoparticles. The SM-SERS sensitivity critically depends on plasmonic hot-spots created at the vicinity of such nanoparticles. In conventional fluid-phase SM-SERS experiments, plasmonic hot-spots are facilitated by chemical aggregation of nanoparticles. Such aggregation is usually irreversible, and hence, nanoparticles cannot be re-dispersed in the fluid for further use. Here, we show how to combine SM-SERS with plasmon polariton-assisted, reversible assembly of plasmonic nanoparticles at an unstructured metal–fluid interface. One of the unique features of our method is that we use a single evanescent-wave optical excitation for nanoparticle assembly, manipulation and SM-SERS measurements. Furthermore, by utilizing dual excitation of plasmons at metal–fluid interface, we create interacting assemblies of metal nanoparticles, which may be further harnessed in dynamic lithography of dispersed nanostructures. Our work will have implications in realizing optically addressable, plasmofluidic, single-molecule detection platforms. Plasmonic hot-spot generation in solution is not reversible for single-molecule surface-enhanced Raman scattering, which limits its applications. Patra et al.tackle this problem by integrating this technique with thermo-plasmon-assisted reconfiguration of nanoparticles at a metal–fluid interface.read more
Citations
More filters
Journal ArticleDOI
The surface science of nanocrystals.
Michael A. Boles,Daishun Ling,Daishun Ling,Taeghwan Hyeon,Dmitri V. Talapin,Dmitri V. Talapin +5 more
TL;DR: The role of surface ligands in tuning and rationally designing properties of functional nanomaterials and their importance for biomedical and optoelectronic applications is focused on and an assessment of application-targeted surface engineering is concluded.
Journal ArticleDOI
Recent development in 2D materials beyond graphene
TL;DR: In this article, a review highlights the recent progress of the state-of-the-art research on synthesis, characterization and isolation of single and few layer nanosheets and their assembly.
Journal ArticleDOI
The rapid evolution of highly efficient perovskite solar cells
Juan-Pablo Correa-Baena,Antonio Abate,Michael Saliba,Wolfgang Tress,T. Jesper Jacobsson,Michael Grätzel,Anders Hagfeldt +6 more
TL;DR: The perovskite solar cells (PSCs) have attracted much attention because of their rapid rise to 22% efficiencies as discussed by the authors, which could revolutionize the photovoltaic industry.
Journal ArticleDOI
Understanding electrochemical potentials of cathode materials in rechargeable batteries
TL;DR: In this article, the material characteristics that determine and influence the electrochemical potentials of electrodes are discussed, in particular the cathode materials that convert electricity and chemical potential through electrochemical intercalation reactions.
Journal ArticleDOI
Networks beyond pairwise interactions: Structure and dynamics
Federico Battiston,Giulia Cencetti,Iacopo Iacopini,Iacopo Iacopini,Vito Latora,Maxime Lucas,Alice Patania,Jean-Gabriel Young,Giovanni Petri +8 more
TL;DR: A complete overview of the emerging field of networks beyond pairwise interactions, and focuses on novel emergent phenomena characterizing landmark dynamical processes, such as diffusion, spreading, synchronization and games, when extended beyond Pairwise interactions.
References
More filters
Journal ArticleDOI
Plasmon nano-optical tweezers
TL;DR: A review of plasmon-based optical traps can be found in this paper, which summarizes the recent advances in the emerging field and discusses the potential applications to bioscience and quantum optics.
Book
Principles of Surface-Enhanced Raman Spectroscopy: and Related Plasmonic Effects
Eric C. Le Ru,Pablo G. Etchegoin +1 more
TL;DR: In this article, the authors provide an overview of the underlying principles of surface-enhanced Raman scattering (SERS), from the fundamental understanding of the effect to its potential applications.
Journal ArticleDOI
The promise of plasmonics.
TL;DR: A technology that squeezes electromagnetic waves into minuscule structures may yield a new generation of superfast computer chips and ultrasensitive molecular detectors as discussed by the authors, which could yield new generations of super fast computer chips.
Journal ArticleDOI
Optical trapping and manipulation of nanostructures
Onofrio M. Maragò,Philip H. Jones,Pietro Giuseppe Gucciardi,Giovanni Volpe,Andrea C. Ferrari +4 more
TL;DR: The state-of-the-art in optical trapping at the nanoscale is reviewed, with an emphasis on some of the most promising advances, such as controlled manipulation and assembly of individual and multiple nanostructures, force measurement with femtonewton resolution, and biosensors.
Journal ArticleDOI
Single Molecule Raman Spectroscopy at the Junctions of Large Ag Nanocrystals
TL;DR: In this article, the central role of the Ag femtosecond radiative lifetime and the spatial distribution of the excited Ag electrons, in the near field and far field optical properties is discussed.