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Glucose monitoring for diabetes made easy with a blood-less method

Nanotech-Now - June 19, 2014 - 7:45am
Treating Diabetes - a major scourge of humanity bothering millions of people - requires a constant monitoring of the human blood for glucose concentrations. While current schemes employ electrochemica...
Categories: Nanotechnology News

Zyvex Technologies Joins OCSiAl to Create World’s Largest Nanotechnology Company: Acquisition will bring unprecedented scale and technology to the consumer products market

Nanotech-Now - June 19, 2014 - 7:45am
OCSiAl, the leading technology manufacturer for the mass industrial production of graphene tubes, announced today at a press conference at the TechConnect World Innovation Conference that it has acqui...
Categories: Nanotechnology News

Gold nanomatryoshkas kill cancer cells

Nanotechweb - June 19, 2014 - 5:11am
Nanospheres surrounded by a silica-gold shell can photothermally ablate aggressive breast tumours in mice.
Categories: Nanotechnology News

Novel nanoparticle production method could lead to better lights, lenses, solar cells

National Nanomanufacturing Network - June 18, 2014 - 9:39am
Sandia National Laboratories has come up with an inexpensive way to synthesize titanium-dioxide nanoparticles and is seeking partners who can demonstrate the process at industrial scale for everything from solar cells to light-emitting diodes (LEDs). Titanium-dioxide (TiO2) nanoparticles show great promise as fillers to tune the refractive index of anti-reflective coatings on signs and optical encapsulants for LEDs, solar cells and other optical devices. Optical encapsulants are coverings or coatings, usually made of silicone, that protect a device. Industry has largely shunned TiO2 nanoparticles because they’ve been difficult and expensive to make, and current methods produce particles that are too large. Sandia became interested in TiO2 for optical encapsulants because of its work on LED materials for solid-state lighting.Current production methods for TiO2 often require high-temperature processing or costly surfactants — molecules that bind to something to make it soluble in another material, like dish soap does with fat. Those methods produce less-than-ideal nanoparticles that are very expensive, can vary widely in size and show significant particle clumping, called agglomeration. Sandia’s technique, on the other hand, uses readily available, low-cost materials and results in nanoparticles that are small, roughly uniform in size and don’t clump. “We wanted something that was low cost and scalable, and that made particles that were very small,” said researcher Todd Monson, who along with principal investigator Dale Huber patented the process in mid-2011 as Laboratory Directed Research and Development (http://www.sandia.gov/research/laboratory_directed_research/index.html) project Huber began in 2005. “The original project goals were to investigate the basic science of nanoparticle dispersions, but when this synthesis was developed near the end of the project, the commercial applications were obvious,” Huber said. The researchers subsequently refined the process to make particles easier to manufacture. Existing synthesis methods for TiO2 particles were too costly and difficult to scale up production. In addition, chemical suppliers ship titanium-dioxide nanoparticles dried and without surfactants, so particles clump together and are impossible to break up. “Then you no longer have the properties you want,” Monson said. The researchers tried various types of alcohol as an inexpensive solvent to see if they could get a common titanium source, titanium isopropoxide, to react with water and alcohol. The biggest challenge, Monson said, was figuring out how to control the reaction, since adding water to titanium isopropoxide most often results in a fast reaction that produces large chunks of TiO2, rather than nanoparticles. “So the trick was to control the reaction by controlling the addition of water to that reaction,” he said. Textbooks said making nanoparticles couldn’t be done, Sandia persisted Some textbooks dismissed the titanium isopropoxide-water-alcohol method as a way of making TiO2 nanoparticles. Huber and Monson, however, persisted until they discovered how to add water very slowly by putting it into a dilute solution of alcohol. “As we tweaked the synthesis conditions, we were able to synthesize nanoparticles,” Monson said. The next step is to demonstrate synthesis at an industrial scale, which will require a commercial partner. Monson, who presented the work at Sandia’s fall Science and Technology Showcase (https://share.sandia.gov/news/resources/news_releases/technology_showcase2/#.U1-wesfOO9c), said Sandia has received inquiries from companies interested in commercializing the technology. “Here at Sandia we’re not set up to produce the particles on a commercial scale,” he said. “We want them to pick it up and run with it and start producing these on a wide enough scale to sell to the end user.” Sandia would synthesize a small number of particles, then work with a partner company to form composites and evaluate them to see if they can be used as better encapsulants for LEDs, flexible high-index refraction composites for lenses or solar concentrators. “I think it can meet quite a few needs,” Monson said.Source: Sandia National Laboratories (https://share.sandia.gov/news/resources/news_releases/nanoparticles_production/#.U6Hq8KLlFZI)

New Graphene Factory opens in Italy

Nanotechweb - June 18, 2014 - 3:53am
Directa Plus inaugurates new industrial plant this month – the largest European production unit of its kind
Categories: Nanotechnology News

A virus reveals the physics of nanopores

Nanotech-Now - June 17, 2014 - 7:45am
Nanopores could provide a new way to sequence DNA quickly, but the physics involved isn't well understood. That's partly because of the complexities involved in studying the random, squiggly form DNA...
Categories: Nanotechnology News

Iran to Hold 5th Int'l Congress on Nanoscience, Nanotechnology (ICNN2014)

Nanotech-Now - June 17, 2014 - 7:45am
Iran Nanotechnology Society is due to hold the Fifth International Congress on Nanoscience and Nanotechnology (ICNN2014) in Tarbiat Modrres University on 22-24 November 2014.
Categories: Nanotechnology News

Trapping light: a long lifetime in a very small place - Researchers create an innovative light-trapping nanostructure using a genetic-inspired approach

Nanotech-Now - June 17, 2014 - 7:45am
Physicists at the University of Rochester have created a silicon nanocavity that allows light to be trapped longer than in other similarly-sized optical cavities. An innovative design approach, which...
Categories: Nanotechnology News

Nanoscale composites improve MRI: Rice, Methodist researchers merge magnetic particles to detect, fight disease

Nanotech-Now - June 17, 2014 - 7:45am
Submicroscopic particles that contain even smaller particles of iron oxide could make magnetic resonance imaging (MRI) a far more powerful tool to detect and fight disease.
Categories: Nanotechnology News

A researcher at the UJI generates high electron mobility gases in semiconductor nanowires for the first time

Nanotech-Now - June 17, 2014 - 7:45am
Nanotechnology, optics and photovoltaic energy are among the fields that can benefit from advances in knowledge on semiconductor nanowire systems. Researchers at the Universitat Jaume I in Castelló (U...
Categories: Nanotechnology News

Starch-Made Coating Produced in Iran for Conservation of Food Products

Nanotech-Now - June 17, 2014 - 7:45am
Iranian researchers from University of Tehran used starch nanocatalysts to produce a coating for the protection and enrichment of food products in factories.
Categories: Nanotechnology News

New brochure from Malvern Instruments guides GPC/SEC detectors choice

Nanotech-Now - June 17, 2014 - 7:45am
A new brochure from Malvern Instruments details the range of detectors available for Gel Permeation/Size Exclusion Chromatography (GPC/SEC). It also provides scientists with the background required t...
Categories: Nanotechnology News

New computer program aims to teach itself everything about anything

Nanotech-Now - June 17, 2014 - 7:45am
In today's digitally driven world, access to information appears limitless. But when you have something specific in mind that you don't know, like the name of that niche kitchen tool you saw at a f...
Categories: Nanotechnology News

Harris & Harris Group Continues Its Blog Series to Highlight Most Impactful Portfolio Companies With HZO, Inc.

Nanotech-Now - June 17, 2014 - 7:45am
Harris & Harris Group, Inc. (Nasdaq:TINY), an investor in transformative companies enabled by disruptive science, released its blog post on HZO, Inc., and why it is on the cutting edge of waterproofin...
Categories: Nanotechnology News

Beneq is on the move!

Nanotech-Now - June 15, 2014 - 7:45am
As of Thursday, June 12, 2014, Beneq's facilities in Vantaa will join Lumineq Displays on its premises in Espoo, Finland.
Categories: Nanotechnology News

New Iran-Made Nanosensor Precisely Measures Level of Anti-HIV Drugs

Nanotech-Now - June 15, 2014 - 7:45am
Iranian chemists from Bu-Ali Sina (Avicenna) University designed a nanosensor with very high sensing ability to measure the amount of anti-HIV drugs.
Categories: Nanotechnology News

Chemical Sensor on a Chip

Nanotech-Now - June 15, 2014 - 7:45am
They are invisible, but perfectly suited for analysing liquids and gases; infrared laser beams are absorbed differently by different molecules. This effect can for instance be used to measure the oxyg...
Categories: Nanotechnology News

Antibodies from the Desert as Guides to Diseased Cells

Nanotech-Now - June 15, 2014 - 7:45am
The use of nanoparticles in cancer research is considered as a promising approach in detecting and fighting tumour cells. The method has, however, often failed because the human immune system recogniz...
Categories: Nanotechnology News

Manipulating and Detecting Ultrahigh Frequency Sound Waves: Berkeley Lab Researchers Demonstrate Advance in Controlling Nano-scale Vibrations at 10 GHz

Nanotech-Now - June 15, 2014 - 7:45am
An advance has been achieved towards next generation ultrasonic imaging with potentially 1,000 times higher resolution than today's medical ultrasounds. Researchers with the U.S. Department of Energy...
Categories: Nanotechnology News