Showing Spotlights 433 - 440 of 2140 in category (newest first):
Supramolecular chemistry deals with molecular building-blocks that interact with each other in a dynamic manner, similar to what is seen in nature. Taking advantage of this, several 'smart' materials have been developed for biomedical applications by careful design of these building-blocks. These materials have especially interesting properties like self-healing and responsiveness to light and electricity. Researchers have now explored the possibility of developing a bacterial strain with the ability to interact dynamically with a popular supramolecular building-block.
Mar 26th, 2015
A novel nanoparticle blood test detects an overall increase of human immunoglobulin G (IgG), including the tumor-specific autoantibodies, adsorbed to a gold nanoparticle surface. While this test may not be able to identify the specific type of cancer, it may potentially be able to detect early stage tumor-induced immune responses associated with a broad spectrum of cancer types, making this test potentially a universal screening test for cancer risk assessment.
Mar 24th, 2015
Typically, in clinical formulations of Magnetic Resonance Imaging (MRI) contrast agents, gram quantities of Gd(III) are needed to achieve sufficiently high contrast for examination. That's why the research imaging community is interested in developing new formulations of contrast agents able to bridge the gap between high contrast imaging of contrast agents dosed at low concentrations.
In new work, researchers report a new class of gold nanoconjugates that exhibit exceptionally high relaxivities at both low and high field strengths.
Mar 23rd, 2015
In new work, researchers have utilized diffusion as an effective transport mechanism for DNA nanotechnology. These findings contribute a new aspect to be considered for the design of future DNA motors, molecular machines, and nanorobots as they provide a simple way to transport molecules over distances of potentially several 100 nm; which is much faster than when using conventional DNA walkers or motors, which make many small and slow steps.
Mar 19th, 2015
Trying to develop chemical free disinfection techniques, researchers are currently exploring the effectiveness of a nanotechnology based intervention method for the inactivation of foodborne and spoilage microorganisms on fresh produce and on food production surfaces. This method utilizes Engineered Water Nanostructures (EWNS) generated by electrospraying of water. These EWNS are 25 nm in diameter; remain airborne in indoor conditions for hours; contain Reactive Oxygen Species (ROS); have very strong surface charge (on average 10 electrons per structure) and have the ability to interact and inactivate pathogens by destroying their membrane.
Mar 16th, 2015
Researchers have developed a magnetic bead based sensor that combines magnetic separation (MS) and magnetic relaxation switch (MRS) for one-step detection of bacteria and viruses with high sensitivity and reproducibility. Compared to conventional assays for detection of bacteria and viruses, this novel MS-MRS assay is easy to operate without laborious pre-treatment, purification and can be adaptable to point-of-care tests easily.
Mar 13th, 2015
Molybdenum disulfide's (MoS2) semiconducting ability, strong light-matter interaction and similarity to the carbon-based graphene makes it of interest to scientists as a viable alternative to graphene in the manufacture of electronics, particularly photoelectronics. In particular, MoS2 has excellent optical properties when deposited as a single, atom-thick layer - unlike graphene, it emits light when excited; albeit relatively poorly. In order to realize the potential of atomically thin MoS2 as a nanoscale active material in a light source, a considerable enhancement of its emission efficiency is necessary.
Mar 12th, 2015
Historically, the approval of Doxil as the very first nanotherapeutic product in 1995 is generally regarded as the dawn of nanomedicine for human use. Although numerous products classified as nanomedicine products have indeed appeared over the past decade, such products have not exactly revolutionized treatment paradigms as envisaged earlier. In particular no molecular machine or nanorobot has yet entered clinical trials, although research in these areas is picking up pace.
Mar 10th, 2015