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
Bioprinting Technology: A Current State-of-the-Art Review
Amer Dababneh,Ibrahim T. Ozbolat +1 more
TL;DR: This review paper overviews the current state of the art in bioprinting technology, describing the broad range of bioprinters and bioink used in preclinical studies and distinguishing between laser-, extrusion-, and inkjet-based biopprinting technologies.
Journal ArticleDOI
The evolution of spiropyran: fundamentals and progress of an extraordinarily versatile photochrome.
Luuk Kortekaas,Wesley R. Browne +1 more
TL;DR: An overview of their rich history is provided and the contemporary relevance of the spiropyrans is highlighted.
Journal ArticleDOI
Optimal Ancient DNA Yields from the Inner Ear Part of the Human Petrous Bone.
Ron Pinhasi,Daniel Fernandes,Kendra Sirak,Mario Novak,Sarah Connell,Songül Alpaslan-Roodenberg,Fokke Gerritsen,Vyacheslav Moiseyev,Andrey Gromov,Pál Raczky,Alexandra Anders,Michael Pietrusewsky,Gary O. Rollefson,Marija Jovanovic,Hiep Trinhhoang,Guy Bar-Oz,Marc Oxenham,Hirofumi Matsumura,Michael Hofreiter +18 more
TL;DR: It is confirmed that dense bone parts of the petrous bone can provide high endogenous aDNA yields and indicate that endogenous DNA fractions for part C can exceed those obtained for part B by up to 65-fold and those from part A byUp to 177-fold, while total endogenous DNA concentrations are up to 126- fold and 109-fold higher for these comparisons.
Journal ArticleDOI
Raman Techniques: Fundamentals and Frontiers
TL;DR: An understanding of the fundamental physics that govern the Raman effect and its advantages, limitations and applications is provided and the key experimental considerations for implementing the main experimental Raman spectroscopic techniques are highlighted.
Journal ArticleDOI
Two-Dimensional Materials for Thermal Management Applications
Houfu Song,Jiaman Liu,Bilu Liu,Junqiao Wu,Junqiao Wu,Hui-Ming Cheng,Hui-Ming Cheng,Feiyu Kang +7 more
TL;DR: In this paper, the authors introduce phonon dynamics of solid materials and thermal measurement methods at nanoscale, and highlight the unique thermal properties of 2D materials in relation to sample thickness, domain size, and interfaces.
References
More filters
Journal ArticleDOI
Optical Constants of the Noble Metals
P. B. Johnson,R. W. Christy +1 more
TL;DR: In this paper, the optical constants for the noble metals (copper, silver, and gold) from reflection and transmission measurements on vacuum-evaporated thin films at room temperature, in the spectral range 0.5-6.5 eV.
Journal ArticleDOI
Surface plasmon subwavelength optics
TL;DR: By altering the structure of a metal's surface, the properties of surface plasmons—in particular their interaction with light—can be tailored, which could lead to miniaturized photonic circuits with length scales that are much smaller than those currently achieved.
Journal ArticleDOI
Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman Scattering
Shuming Nie,Steven R. Emory +1 more
TL;DR: In this article, surface-enhanced Raman scattering was used to detect single molecules and single nanoparticles at room temperature with the use of surface enhanced Raman, and the intrinsic Raman enhancement factors were on the order of 10 14 to 10 15, much larger than the ensemble-averaged values derived from conventional measurements.
Journal ArticleDOI
Single Molecule Detection Using Surface-Enhanced Raman Scattering (SERS)
Katrin Kneipp,Katrin Kneipp,Yang Wang,Yang Wang,Harald Kneipp,Harald Kneipp,Lev T. Perelman,Lev T. Perelman,Irving Itzkan,Irving Itzkan,Ramachandra R. Dasari,Ramachandra R. Dasari,Michael S. Feld,Michael S. Feld +13 more
TL;DR: In this article, the first observation of single molecule Raman scattering was made using a single crystal violet molecule in aqueous colloidal silver solution using one second collection time and about $2.
Journal ArticleDOI
Biosensing with plasmonic nanosensors
TL;DR: This paper introduces the localized surface plasmon resonance (LSPR) sensor and describes how its exquisite sensitivity to size, shape and environment can be harnessed to detect molecular binding events and changes in molecular conformation.