Papers – Page 4 – TechConnect Briefs

Elasto-plastic Properties of Electroplated and Polycrystalline Nickel using Numerical Modelling of the Nanoindentation Test Coupled with an Inverse Method

Qasmi M., Delobelle P., Richard F., Université de Franche-Comté, FR

The aim of this paper is a wide investigation of the nano scale of the elastoplastic properties of electroplated Nickel, which is extensively used in the LIGA techniques and polycrystalline hardened and annealed Nickel with [...]

Burned Metal Phenomenon: A Study of Critical Factors and Their Effects on IC Devices during Parallel Lapping

Batteate P., Liao J.Y., Nvidia, US

Parallel lapping is widely employed in destructive physical analysis on semiconductor integrated circuits, to reveal defects isolated by electrical failure analysis tools and techniques. A clean sample surface is critical so that the analysts can [...]

Atomic-scale Structure of Nanocrystals by the Atomic Pair Distribution Function Technique

Petkov V., Central Michigan University, US

Knowledge of the atomic-scale structure is an important prerequisite to understand and control the properties of materials. In the case of crystals it is obtained solely from the Bragg peaks in their diffraction pattern and [...]

Effect of Various Fuel Conditions on the Synthesis of Nano Crystalline LiNiVO4 Powders for Lithium Battery Applications

Vivekanandhan S., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN

Inverse spinel LiNiVO4 has been used as a cathode material for high voltage lithium battery applications. Better performance of the cathode material is due to its physical and chemical properties, which are mainly depending on [...]

Desorption of Surfactant and Sintering of Surface Modified PdxNi1-x Nanoparticles

Wang K-W, Chung S-R, Hung W-H, Perng T.P., National Tsing Hua University, TW

A series of PdxNi1-x nanoparticles in a diameter of 10 nm were prepared by wet chemical reduction. The surface was modified with 1 wt% stearic acid (SA) or polyethylene glycol (PEG). Desorption of the surfactant [...]

Nanoscaled Science and Engineering for Sensing : Quantum Dots Fluorescence Quenching for Organic NO2 Sensing

Nieto S., Santana A., Delgado R., Hernandez S.P., Chamberlain R.T., Lareau R., Castro M.E., The University of Puerto Rico Chemical Imaging Center, US

We report on femtosecond laser off-resonance excitation of quantum dots-TNT assemblies in solution. The fluorescence emission from quantum dots shifts toward lower wavelengths and the relative peak intensity decreases with the amount of TNT added [...]

Finite-Size Effects and Surface-Enhanced Raman Scattering from Molecules Adsorbed on Noble-Metal Nanoparticles

Pustovit V.N., Walker K.M., Shahbazyan T.V., Jackson State University, US

We study theoretically the role of strong electron confinement on surface-enhanced Raman scattering (SERS) from molecules adsorbed on metal nanoparticles. We describe a novel enhancement mechanism, relevant for nanometer-sized noble-metal particles, which originates from different [...]

Growth Kinetics of Gold Nanoparticles in Reverse Micelles

Herrera A.P., Vicuña E., Rinaldi C., Castro M.E., Irizarry R., Briano J.G., University of Puerto Rico, US

Gold nanoparticles were formed from the reduction of gold (III) in reverse micelles and monitored with a stopped flow analyzer. The gold and the reducing agent micelles were formed in isooctane and AOT (as surfactant). [...]

Nanoparticle Dispersions for Polishing Applications

Murray P.G., Nanophase Technologies Corporation, US

Increasingly, improvements in surface roughness and planarity are being sought in a variety of technologically advanced polishing applications related to the electronics industry. From the production of photomask blanks to the fabrication of microelectronic memory [...]

Adsorption of PTDCA on Si(100) and Si(100)-H

Soubiron T., Vaurette F., Grandidier B., Wallart X., Nys J.P., Stiévenard D., IEMN (UMR8520, CNRS), Dpt ISEN, FR

Submonolayer coverages of perylene-tetracarboxylic-dianhydride (PTCDA) molecules have been investigated with scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). At high coverage, X-ray measurements indicate that only a fraction of the molecules are chemisorbed and [...]