Journal ArticleDOI
Shape-controlled synthesis of metal nanostructures: the case of silver.
Reads0
Chats0
TLDR
Investigating the growth mechanisms for silver nanocubes, nanowires, and nanospheres produced through a polymer-mediated polyol process found that the crystallinity of a seed and the extent of the PVP coverage on the seed were both instrumental in controlling the morphology of final product.Abstract:
The concept of shape-controlled synthesis is discussed by investigating the growth mechanisms for silver nanocubes, nanowires, and nanospheres produced through a polymer-mediated polyol process. Experimental parameters, such as the concentration of AgNO(3) (the precursor to silver), the molar ratio between poly(vinylpyrrolidone) (PVP, the capping agent) and AgNO(3), and the strength of chemical interaction between PVP and various crystallographic planes of silver, were found to determine the crystallinity of seeds (e.g., single crystal versus decahedral multiply twinned particles). In turn, the crystallinity of a seed and the extent of the PVP coverage on the seed were both instrumental in controlling the morphology of final product. The ability to generate silver nanostructures with well-defined morphologies provides a great opportunity to experimentally and systematically study the relationship between their properties and geometric shapes.read more
Citations
More filters
Journal ArticleDOI
Facile synthesis of monodisperse silver nanoparticles for screen printing conductive inks
TL;DR: In this paper, a modified polyol process was used to synthesize monodisperse silver nanoparticles with high concentration under a relatively low mass ratio of PVP to AgNO3.
Journal ArticleDOI
Size-dependent elastic moduli and vibrational properties of fivefold twinned copper nanowires
TL;DR: Simulation results and continuum predictions show that, provided the effective Young's and shear moduli are used, classic elastic theory can be applied to describe the small-amplitude vibration of fivefold twinned copper nanowires.
Journal ArticleDOI
Impact of microwave power on the preparation of silver nanowires via a microwave-assisted method
TL;DR: In this paper, the effect of microwave power on the morphologies of silver nanostructures was studied and the synthesis was conducted at various single microwave powers, 80, 160, 320, 560 and 800 W with a combination of 800 W and 320 W with different sequences and time assignments.
Journal ArticleDOI
One-Pot Synthesis of Icosahedral Silver Nanoparticles by Using a Photoassisted Tartrate Reduction Method under UV Light with a Wavelength of 310 nm
TL;DR: This is the first report of icosahedral AgNPs synthesized by using a seed-free photochemical method under UV light with a wavelength of λ=(310±12) nm and the product yield is higher than 90 %.
Journal ArticleDOI
Polyol synthesis of silver nanostructures: Inducing the growth of nanowires by a heat-up process
Guh-Hwan Lim,Seong Jun Lee,Insung Han,Shingyu Bok,Jung Heon Lee,Jaewook Nam,Jeong Ho Cho,Byungkwon Lim +7 more
TL;DR: In this article, the authors reported that Ag nanowires can be synthesized in high yields by applying a heat-up process in the polyol synthesis and applied as electrode materials for the fabrication of flexible and transparent organic field-effect transistors with a reasonably high hole-mobility.
References
More filters
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
The Optical Properties of Metal Nanoparticles: The Influence of Size, Shape, and Dielectric Environment
TL;DR: In this paper, the authors describe recent progress in the theory of nanoparticle optical properties, particularly methods for solving Maxwell's equations for light scattering from particles of arbitrary shape in a complex environment.
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.
Book
Optical Properties of Metal Clusters
U. Kreibig,Michael Vollmer +1 more
TL;DR: In this paper, the authors present a survey of optical spectra of Elemental Metal Clusters and Chain Aggregates and discuss experimental results and experimental methods for metal clustering experiments.
Journal ArticleDOI
Shape-Controlled Synthesis of Gold and Silver Nanoparticles
Yugang Sun,Younan Xia +1 more
TL;DR: Monodisperse samples of silver nanocubes were synthesized in large quantities by reducing silver nitrate with ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP), characterized by a slightly truncated shape bounded by {100, {110}, and {111} facets.