characterization – Page 3 – TechConnect Briefs

Compact MEMS/NEMS Characterization Platform Using a DVD Optical Pick-up Unit with Optical Imaging Function

Chen C-H, Larsen T., Schmid S., Liao H-S, Hwang I-S, Boisen A., Hwu E-T, Academia Sinica, TW

We present a compact, simple and efficient platform for MEMS/NEMS characterization. In this platform, a DVD optical pickup unit (OPU) is combined with a CCD camera. A nano-scale resolution long range X-Y-Z linear stage below [...]

Synthesis of Stabilized Silver nanoparticles exposed to Hydrochloric Acid

Atta A.M., Allohedan H.A., Ezat A., Issa Z.A., King Saud Unversity, SA

The bioavailability of ingested silver nanoparticles (AgNPs) depends in large part on initial particle size, shape and surface coating, properties which will influence aggregation, solubility and chemical composition during transit of the gastrointestinal tract. In [...]

Understanding the Biological Impact of Nanoengineered Surfaces

Casey B.J., Kumar G., Petrochenko P., Skoog S.A., Narayan R.J., Goering P.L., Dair B.J., U.S. Food and Drug Administration, US

There is a growing trend in the medical device industry to manipulate the surface topography of a device with nanoscale features in order to promote advantageous biological responses such as better tissue integration and/or faster [...]

New Nanocomposites – Controlled Capture of Nanoparticles in Scrolled Nanosheets

Adireddy S., Yao Y., Vargas J.M., Spinu L., Wiley J.B., University of Neworleans, US

The ability to encapsulate linear nanoparticle chains in scrolled nanosheets is an important advance in the formation of nanocomposites. Recent work in our group resulted in the in situ formation of peapod-like structures based on [...]

Characterizing the Minimal Information about Nanomaterials and Bringing Data Together to Accelerate Discover

Ostraat M.L., Murry D., Mills K.C., Guzan K.A., RTI International, US

Nanomaterials are being widely incorporated into consumer products and are being used in studies and procedures to improve human health. Although there are benefits of using nanomaterials, there may also be unintended risks. There is [...]

Optimizing Instrument Operation and Data Processing for Single Particle Inductively Coupled Plasma Mass Spectrometry Measurement of Gold Nanoparticles

Liu J., Murphy K.E., MacCuspie R.I., Winchester M.R., National Institute of Standards and Technology, US

In recent years, inductively coupled plasma mass spectrometry (ICP-MS) operated in time-resolved analysis (TRA) mode has merged as a promising analytical tool capable of both sizing and counting metal containing nanoparticles in aqueous suspensions. In [...]

Extending the Lifetime of Zeta Potential Electrodes

Bodycomb J., Bruno D., Treviranus I., Bumiller M., Horiba Scientific, US

Nanoparticle development and manufacturing require appropriate particle characterization techniques to determine if design or quality goals are being met. One important aspect of many nanoparticle systems is the zeta potential, a measure of surface charge. [...]

Characterization of Solar Grade Silicon Contaminants

Mount G.R., Wang L., Putyera K., Lepage M., Evans Analytical Group, US

The term ‘Solar Grade Silicon (SoG)’ has been used for many years but until recently, there were no specifications as to what this actually meant. Without specifications, suppliers of silicon have been using ‘number of [...]

Characterization of Solar Grade Silicon Contaminants

Mount G.R., Wang L., Putyera K., Lepage M., Evans Analytical Group, US

The term ‘Solar Grade Silicon (SoG)’ has been used for many years but until recently, there were no specifications as to what this actually meant. Without specifications, suppliers of silicon have been using ‘number of [...]

Nanomaterial Registry: An authoritative resource for assessing environmental and biological interactions of nanomaterials

Ostraat M.L., Mills K., Murry D., Guzan K., RTI International, US

Assessing the interactions of nanomaterials with environmental and biological systems is both complex and rapidly evolving. The complexity of these interactions arises from the fact that they are not only a function of the system [...]