US – Page 93 – TechConnect Briefs

Exposure Evaluation of Airborne Titanium Dioxide from Use in Spray Sunscreens

Kreider M.L., Unice K.M., Madl A.K., Cardno ChemRisk, US

In this study, we simulated consumer application of a spray sunscreen containing nanoscale TiO2 to determine the nature of consumer TiO2 exposure from the product’s use (e.g. form of TiO2 [primary particle, aggregate/agglomerate], size of [...]

Aerosolization of Carbon Nanotubes for the Development of Reference Air Samples

Cavaliere M.R., Compton S.P., MVA Scientific Consultants, US

Reports on the inhalation risks associated with carbon nanotubes (CNTs) express concern for exposures throughout the lifetime of CNTs and CNT-enabled products. The ability to quantify airborne exposures to workers and consumers will be a [...]

Physico-chemical Characterization of Extracts of Silver Nanoparticle Containing Medical Devices

Casey B.J., Jayanti P., Sussman E.M., Dair B.J., U.S. Food and Drug Administration, US

The main goal of this research was to gain a better understanding of the extraction profile of medical devices containing silver nanoparticles. Multiple silver nanoparticle containing medical devices were incubated in various extract solutions (water, [...]

The Study of Surface Accumulated Silica Nanoparticles from “Weathered” Polymer Nanocomposites Using ICP-OES

Rabb S.A., Stanley D., Sung L., Nguyen T., Yu L.L., National Institute of Standards and Technology, US

The impact of nanoparticles on the environment and, more importantly, the human population has been of great interest for the past few years. Release of these nanoparticles from different materials from wear or climate exposure [...]

Multi-method analysis of multiwall carbon nanotube polymer nanocomposite after photodegradation

Petersen E.J., Lam T., Gorham J., Scott K., Long C., Sharma R., Sung L.P., Liddle J.A., Nguyen T., National Institute of Standards and Technology, US

Nanomaterials can be used as nanofillers to enhance the properties of polymeric materials. However, the effect of weathering on nanocomposites and the potential for nanomaterial release is not yet well known. This stems partly from [...]

Printed Gas Sensors for the Trillion Sensor Universe

Stetter E.F., Stetter J.R., Stetter E.F., Stetter J.R., Findlay M., Patel V., KWJ Engineering Inc. & SPEC Sensors LLC, US

Estimates predict that within a few years, we will need trillions of sensors to match the global development of wireless communications and computation. Chemical and gas sensors are an integral part of this need for [...]

Stretchable Electronics

Liang J., Li L., Liang J., Hajagos J., Niu X., Yu Z., Pei Q., University of California, Los Angeles, US

The emergence of devices that combine elasticity with electronic or optoelectronic properties offers exciting new opportunities for applications, but brings significant materials challenges. We will report (1) an elastomeric transparent conductor as a radically new [...]

High Performance Organic Transistors based on Molecular Doping

Lussem B., Tietze M., Kleemann H., Fischer A., Gunther A., Leo K., Kent State University, US

Organic transistors hold the promise of enabling the field of flexible electronics. However, despite significant progress in the past, the performance and reliability of organic transistors has to be improved further to turn the dream [...]

Enhanced performance of all organic field-effect transistors and capacitors through choice of solvent

Guha S., Knotts G., Ukah N.B., University of Missouri, US

We demonstrate low-operating voltage, high mobility, and stable organic field-effect transistors (OFETs) using both non-polar and polar polymeric dielectrics such as poly(4-vinyl phenol) (PVP), poly methyl metacrylate (PMMA), and polyvinylidene fluoride-trifluoroethylene (PVDF-TrFe), dissolved in solvents [...]

Temperature Stability of PAG-Doped-Graphene, Towards Commercial Production of Graphene Integrated Circuits

Al-Mumen H., Li W., Michigan State University, US

In our previous work we found out a highly in air stable technique, defect-less, and relatively high electron mobility for n-doping graphene nanomesh using PAG (an element of SU-8 resist compound). This work demonstrated the [...]