Nanoparticle Synthesis & Applications – Page 62

Vibrational Modes of Metal Nanoshells

Kirakosyan A.S., Shahbazyan T.V., Jackson State University, US

We study coherent oscillations of radial breathing modes in metal nanoparticles with a dielectric core. Vibrational modes are impulsively excited by a rapid heating of the particle lattice that occurs after laser excitation, while the [...]

Surface-Enhanced Raman Scattering in Small Noble-Metal Nanoparticles

Pustovit V.N., Shahbazyan T.V., Jackson State University, US

We present a microscopic theory of quantum-size effects in surface-enhanced Raman scattering (SERS) from molecules adsorbed on small metal nanoparticles. In noble-metal nanoparticles, the confining potential has different effect on s-band and d-band electrons. Namely, [...]

Low Temperature Synthesis of Nanosized Metal Oxides by a Supercritical Seed Enhanced Crystallization process (SSEC)

Jensen H., Joensen K.D., Iversen S.B., Søgaard E.G., Aalborg University, DK

A novel low temperature method has been developed to produce nanosized crystalline materials. The method, a Supercritical Seed Enhanced Crystallization (SSEC) process, was shown to lower the crystallization temperature for several metal oxides by a [...]

Room-Temperature Synthesis and Characterization of Highly Monodisperse Transition Metal-Doped ZnO Nanocrystals

Singh S.P., Perales-Perez O., Tomar M.S., Parra-Palomino A., Ruiz-Mendoza A., University of Puerto Rico, PR

We present here the results of our current efforts on size-controlled synthesis of bare and Mn- and Co-doped ZnO nanocrystals. Stable suspensions of these materials were produced in ethanol solutions at room-temperature. XRD characterization of [...]

Vibrating Nanotube–based Nano Powder Production System

Akhatov I.S., Jang B.Z., Rastgaar Aagaah M., Schmidt D.R., Mitlyng A.S., Stewart M.B., Mahinfalah M., North Dakota State University, US

In this paper we present a new nano powder production method. Basic idea of this method is as follows: a nanotube being placed in a vapor atmosphere will provoke condensation of vapor on the tip [...]

Preparation of Functional LLDPE/LDPE/TiO2 Membranes

Wang X-Y, Wang X., Lee J-H., Wang X-Y, Wang X., Hong C-E, Chonbuk National University, KR

Nano-scaled TiO2 has now been used in polymer industry due to its promising properties in light catalyst and UV light shielding[1-3]. In the present paper, functional LLDPE/LDPE/TiO2 membranes were successfully manufactured. To solve the poor [...]

Characterization of Nanocrystalline PZT Synthesized via a Hydrothermal Method

Harada S., Dunn S., Cranfield University, UK

Nanoscale lead zirconate titanate (PZT) has the potential to become a key component in a myriad of emerging future applications. A sound knowledge of the underlying physical and chemical processes involved in the formation and [...]

Synthesis of Polymer-Coated Magnetic Nanoparticles

Dey T., O'Connor C.J., AMRI-UNO, US

ATRP approach was employed to synthesis polymer-coated magnetite nanoparticles and was therefore characterized by various methods. The challenge was to obtain a thin shell and particles in an unagglomerated state. Several factors were found to [...]

Synthesis of Y2O3:Eu Phosphor Nanoparticles by Flame Spray Pyrolysis

Qin X., Ju Y., Bernhard S., Yao N., Princeton University, US

Nanoscale Y2O3:Eu phosphor particles were synthesized by flame spray pyrolysis method and the effects of precursor solution and annealing treatment were discussed. The flame spray pyrolysis system consists of a spray generator, a coflow burner, [...]

Exploring the Structure-Function Relationship in Multifunctional Nanoparticles

Casey P.S., Roussow C.R., Boskovic S., Lawrence K.A., Turney T.W., CSIRO (CMIT), AU

Nanoparticles of ZnO are increasingly being used as a pigment and UV absorber in personal care products (e.g. sunscreens), coatings and paints, predominantly because their absorbance efficiency increases with decreasing particle size. However, whilst protection [...]