US – Page 46 – TechConnect Briefs

Novel Structure, Properties, and Synthesis of Refractory Carbides

Dyatkin B., Laskoski M., Rock B.Y., Qadri S., Kolel-Veetil M., Keller T.M., Gamache R.M., U.S. Naval Research Laboratory, US

Ultra-high temperature ceramics (UHTCs) and refractory carbides with high hardness and oxidation resistance demonstrate significant promise in armor and hypersonic engine applications. However, to date, they have been too brittle and expensive to widely implement [...]

Effect of nucleating agents on magnetic properties and relaxation in magnetite-based glass-ceramics prepared by controlled crystallization of borosilicate glasses

Sandu V., Cimpoiasu E., Greculeasa S., Kuncser A., Kuncser V., Nicolescu M.S., Kuncser A., Kuncser V., U.S. Naval Academy, US

We investigated the specific magnetic structure and magnetic relaxation phenomena in magnetite nano-entities grown in a glassy matrix by controlled crystallization of Fe-containing borosilicate and boroaluminosilicate glasses in the presence of two types of nucleating [...]

Lightning Strike Protection and Electromagnetic Interference Shielding for Composite Structures using Metallic Nanofilms

Bollavaram P.K., Patlolla V.R., Rahman M.M., Asmatulu R., Wichita State University, US

Carbon fiber composites are very much imperative to future-generation aircraft structures. However, lightning strike protection and electromagnetic interference are the main concerns of today’s aerospace industries. Carbon fibers have very good mechanical properties with the [...]

Plugging and improving oil recovery performance of polyacrylamide nanogel in porous media

Ding H., Geng J., Imqam A., Bai B., Missouri University of Science and Technology, US

The heterogeneity of reservoir is always responsible for problems such as low oil recovery and excessive water production because of the trend of injection fluids to go through higher permeability zone. Hydrogel has been used [...]

Multilayered nanostructures with controlled magnetic configurations

Sahakyan A.S., Movsesyan R.M., Kocharian A.N., California State University, US

We consider structures consisting of repeating ferromagnetic and nonmagnetic layers. The periodicity of the potential profile, consisting of alternating magnetic barriers and non-magnetic quantum wells, is broken by noncollinearity or noncomplanarity of the magnetizations of [...]

First-Order-Reversal-Curve (Forc) Studies of Nanomagnetic Materials

Dodrill B., Lake Shore Cryotronics, US

The magnetic characterization of nanoscale materials is usually made by measuring a hysteresis loop. However it is not possible to obtain information of interactions or coercivity distributions from the hysteresis loop alone. Studies of magnetic [...]

Superparamagnetic relaxometry (SPMR) for sensitive detection of Her-2 positive tumors in mice

Paciotti G., Minser K.E., Weldon C.L., Gomez A., Karaulanov T., Hathaway H.J., Anderson W.H., Nettles C., Huber D.L., Vreeland E.C., Imagion Biosystems Inc., US

Superparamagnetic Relaxometry (SPMR) is a non-invasive technique that utilizes superconducting quantum interference device (SQUID) detectors to localize and quantify the magnetization of superparamagnetic iron oxide (Fe3O4) nanoparticles (NPs) specifically bound to cancerous tumors. In an [...]

nano-oxygen carrier for machine perfusion organ storage

Srinivas G., TDA Research Inc., US

TDA Research, Inc. (TDA) and its collaborator Southwest Research Institute (SwRI) are developing a perfusion system for the salvage and repair of trauma injured tissue. Machine perfusion is an emerging preservation modality for tissue preservation [...]

Photodegradation of Organic Dyes using CdSTe Quantum Dots

Aviles-Martin C., Alamo-Nole L., Pontifical Catholic University of Puerto Rico, US

The inappropriate disposal of organic dyes used in a variety of industrial applications has become the contamination source of many water sources. This environmental problem has created the need for more effective and simple methods [...]

Nano-engineering Core/Shell Quantum Dots for Ultimate Utility in Light-emission Applications

Htoon H., Hollingsworth J.A., Los Alamos National Laboratory, US

Quantum-confinement effects have been used for decades to tune semiconductor opto-electronic properties. More recently, particle-size control as the primary means for properties control has been succeeded by nanoscale hetero-structuring. In this case, the nanosized particle [...]