The investigation of effects of engineered nanomaterials on endothelial cells - which form the inner lining of blood vessels - is a critical safety issue. Already, various engineered nanomaterials are being designed for biomedical applications for intravascular use and other nanomaterials may reach the vasculature as a result of occupational, environmental, or other types of exposure. Researchers have now elucidated the mechanism of cytotoxicity of carboxylated MWCNTs on cultured endothelial cells and they show a new potential way of pharmacological cytoprotection against cytotoxic effect of carboxylated MWCNTs.
Flexible electronics is a rising field in terms of research and potential application opportunities to obtain similar characteristics than today's prevailing rigid electronics components. In new work, researchers have demonstrated the semiconductor industry's most advanced device architecture - FinFET, a new generation of device architecture which Intel has adopted in 2011 in their microprocessors; these field effect transistors offer non-planar three-dimensional topology where the channels are vertically aligned in arrays of ultra-thin silicon fins bordered by multiple gates - in a flexible platform using only industry standard processes and keeping the advantages offered by silicon.
If you ever had problems with the (non-removable) battery in your iPhone or iPad then you well know that the energy storage or power source is a key component in a tightly integrated electronic device. Any damage to the power source will usually result in the breakdown of the entire device, generating at best inconvenience and cost and in the worst case a safety hazard and your latest contribution to the mountains of electronic waste. A solution to this problem might now be at hand thanks to researchers in Singapore who have successfully fabricated the first mechanically and electrically self-healing supercapacitor.
Researchers report the fabrication of flexible, durable, and self-assembled graphene textile electrodes for supercapacitors using a novel wet-spinning approach of ultra large graphene oxide liquid crystals followed by heat-treatment to obtain graphene fibers. The key to producing such fibers and yarns is to preserve the large sheet size even after the reduction of GO while simultaneously maintaining a high interlayer spacing in between graphene sheets. These graphene yarns could lead the way to the realization of powerful next-generation multifunctional renewable wearable energy storage systems.
The desire to identify materials and their properties to understand complex systems and better engineer their functions has been driving scanning probe microscopies since their inception. Both atomic force microscopy (AFM) and Raman spectroscopy are techniques used to gather information about the surface properties and chemical information of a sample. There are many reasons to combine these two technologies, and this application note discusses both the complementary information gained from the techniques and how a researcher having access to a combined system can benefit from the additional information available.
The integration of consumer electronics with advanced imaging and analytical platforms holds great promises for medical point-of-care diagnostics and environmental rapid field testing for pollutants and viruses. A recent example is a Google Glass application and a server platform for instant, wireless diagnostic testing of a variety of health conditions and diseases. This technology allows Google Glass wearers to use the hands-free camera on the device to send images of diagnostic tests that screen for conditions such as HIV or prostate cancer.
More serious than the common cold, influenza viral infection has been responsible for major epidemics and pandemic respiratory disease in communities around the world. These epidemics come with substantial morbidity and mortality, accounting for 250,000 to 500,000 worldwide deaths each year and are particularly dangerous for vulnerable and elderly populations with statistics showing that 90% of those who succumb to the severe illness are 65 years and older. The flu is also associated with high health care costs. In the U.S., more than $80 billion dollars is spent annually as a result of influenza epidemics.
The term printed electronics refers to the application of printing technologies for the fabrication of electronic circuits and devices, increasingly on flexible plastic or paper substrates. Traditionally, electronic devices are mainly manufactured by photolithography, vacuum deposition, and electroless plating processes. In contrast to these multistaged, expensive, and wasteful methods, inkjet printing offers a rapid and cheap way of printing electrical circuits with commodity inkjet printers and off-the-shelf materials.