Medical & Biotech – Page 152 – TechConnect Briefs

Nanotechnology and Design: The nanostudio project

Elvin G., Ball State University, US

Nanotechnology has the potential to transform the built environment dramatically. According to the Interagency Working Group on Nanoscience, Engineering, and Technology, nanotechnology “is likely to change the way almost everything - from vaccines to computers [...]

Safety, Health, and Environmental Awareness in Nanotechnology Training

Iyuke S.E., University of the Witwastersrand, ZA

The statistical evaluation of the SHE survey strongly supports nine out of the twenty nine test statements to be addressed by practicing nanotechnologists with regards to safety, health and the environment, which are: (1)Sizes, aspect [...]

A Framework for Responsible Nanotechnology Standards

Walsh S., Medley T., Environmental Defense and DuPont, US

Environmental Defense and DuPont will discuss their work together to develop a framework for the responsible development, production, use and disposal of nano-scale materials. The intent of this framework is to define a systematic and [...]

Issues relating to the use of Micro and Nanoparticle Zinc Oxide in Personal Care Products based on Skin Penetration Studies

Casey P., Chau N., Finnin B., CSIRO (CMIT), AU

Nanoparticles of ZnO and TiO2 are increasingly being used as pigments and UV absorbers in personal care products (e.g. sunscreens), coatings and paints, predominantly because their UV absorbance efficiency and transparency to visible light increases [...]

The Effect of Gold Nanoparticles on Dendritic Cells

Vallhov H., Qin J., Johansson S., Muhammed M., Gabrielsson S., Scheynius A., Karolinska Institutet, SE

Recent biological applications have been focusing on using gold nanoparticles for e.g. drug and gene delivery. There is however little information available concerning what influence such particles have on the immune system, e.g. on dendritic [...]

Enviromental, Health and Societal Impacts of Nanotechnology

A Droplet Microarray for Homogeneous Enzymatic Assay

Balakirev M., Mugherli L., Chatelain F., CEA-Grenoble, FR

This work describes a droplet microarray for monitoring of enzymatic activity on a glass slide. These array are composed of features defined and separated by differential surface tension (surface tension array). A photolithographic method was [...]

Nanofluidic Size Exclusion Chromatograph for In Site Macromolecular analyses

Choi D., Grunthaner F., Feldman S., Svehla D., Jet Propulsion Laboratory/California Institute of Technology, US

We are developing a nanofluidic size exclusion chromatograph (nano-SEC) system that can be incorporated into miniature lab-on-a-chip devices which will provide detailed information on the geochemical and biological history of soil, ice, and water samples [...]

Evolution of Streaming Potential in a Finite Length Microchannel

Mansouri A., Bhattacharjee S., Kwok D.Y., Kostiuk L.W., University of Alberta, CA

Pressure-driven-flow in a microchannel with charged solid surfaces induces streaming current and streaming potential. Review of the literature, reveals that most of the studies on the microchannels are either for steady state solution or infinite [...]

Fast mixing using the Shear Superposition Micromixer

Bottausci F., Cardonne C., Mezic I., Meinhart C., university of california, santa barbara, US

We present new experimental results showing high efficiency mixing procedures for an active shear superposition micromixer (SSM). This micromixer consists of a main mixing channel where unmixed fluids are perturbed by jet flows emanating from [...]