Mar 1, 2017
#nanorod #nanoartproject #escayola
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#nanorod #nanoartproject #escayola
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Indian Scientists have evolved a nanorods-based oxygen sensor that operates at room temperature with the assistance of UV irradiation.
Detecting Mercury with Gold
Detecting Mercury with Gold
Mercury is harmful even in small amounts. Detecting it currently requires expensive equipment. Researchers are working on a faster and cheaper alternative: a portable sensor that can perform a rapid analysis in the field. The key is finding something small and accurate enough to do the job.
For many years, scientists have studied tiny gold nanorods for making smaller mercury sensors. Recently, a…
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Good Vibrations Help Reveal Molecular Details
Good Vibrations Help Reveal Molecular Details
Five years of hard work and a little “cosmic luck” led Rice University researchers to a new method to obtain structural details on molecules in biomembranes.
The method by the Rice lab of physicist Jason Hafner combines experimental and computational techniques and relies on the plasmonic properties of gold nanoparticles. It takes advantage of the nanoparticles’ unique ability to focus light on…
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Nanotubes may restore sight to blind retinas
The aging process affects everything from cardiovascular function to memory to sexuality. Most worrisome for many, however, is the potential loss of eyesight due to retinal degeneration.
New progress towards a prosthetic retina could help alleviate conditions that result from problems with this vital part of the eye. An encouraging new study published in Nano Letters describes a revolutionary novel device, tested on animal-derived retinal models, that has the potential to treat a number of eye diseases. The proof-of-concept artificial retina was developed by an international team led by Prof. Yael Hanein of Tel Aviv University's School of Electrical Engineering and head of TAU's Center for Nanoscience and Nanotechnology and including researchers from TAU, the Hebrew University of Jerusalem, and Newcastle University.
Lilach Bareket, Nir Waiskopf, David Rand, Gur Lubin, Moshe David-Pur, Jacob Ben-Dov, Soumyendu Roy, Cyril Eleftheriou, Evelyne Sernagor, Ori Cheshnovsky, Uri Banin, Yael Hanein. Semiconductor Nanorod–Carbon Nanotube Biomimetic Films for Wire-Free Photostimulation of Blind Retinas. Nano Letters, 2014; 14 (11): 6685 DOI: 10.1021/nl5034304
We report the development of a semiconductor nanorod-carbon nanotube based platform for wire-free, light induced retina stimulation. A plasma polymerized acrylic acid midlayer was used to achieve covalent conjugation of semiconductor nanorods directly onto neuro-adhesive, three-dimensional carbon nanotube surfaces. Photocurrent, photovoltage, and fluorescence lifetime measurements validate efficient charge transfer between the nanorods and the carbon nanotube films. Successful stimulation of a light-insensitive chick retina suggests the potential use of this novel platform in future artificial retina applications.
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Technique controls dimensions of gold nanorods
North Carolina State Univ. researchers have a developed a technique for efficiently producing nanoscale gold rods in large quantities while simultaneously controlling the dimensions of the nanorods and their optical properties. The optical properties of gold nanorods make them desirable for use in biomedical applications ranging from imaging technologies to cancer treatment.
Read More - http://www.rdmag.com/news/2013/11/technique-controls-dimensions-gold-nanorods-while-manufacturing-large-scale
Nanorods Shed Light on How Matter Assembles In the microscopic world, everything is in motion: atoms and molecules vibrate, proteins fold, even glass is a slow flowing liquid. And during each movement there are interactions between the smallest elements – for example, the atoms – and their neighbors. To make these movements visible, scientists at the Paul Scherrer Institute PSI have developed a special model system. It is so big that it can be easily observed under an X-ray microscope, and mimics the tiniest movements in Nature. The model: rings made from six nanoscale magnetic rods, whose north and south poles attract each other. At room temperature, the magnetization direction of each of these tiny rods varies spontaneously. Scientists were able to observe the magnetic interactions between these active rods in real time. Read more: http://www.laboratoryequipment.com/news/2013/05/nanorods-shed-light-how-matter-assembles
Fruit-Shaped Nanorods Return Signals 25x Stronger They look like fruit, and indeed the nanoscale stars of new research at Rice Univ. have tasty implications for medical imaging and chemical sensing. Star fruit-shaped gold nanorods synthesized by chemist Eugene Zubarev and Leonid Vigderman, a graduate student in his lab at Rice’s BioScience Research Collaborative, could nourish applications that rely on surface-enhanced Raman spectroscopy (SERS). The researchers found their particles returned signals 25 times stronger than similar nanorods with smooth surfaces. That may ultimately make it possible to detect very small amounts of such organic molecules as DNA and biomarkers, found in bodily fluids, for particular diseases. Read more: http://www.laboratoryequipment.com/news-Star-Fruit-Shaped-Nanorods-Suited-for-Medical-Imaging-Chemical-Sensing-032812.aspx