Tag: "nanoparticle" at biology news

Penn State Engineers Develop New Simulation For Ultrafine Particle Growth Process

... Matsoukas chose to model titanium dioxide nanoparticle formation becauseof current interest in using metal oxides in ceramic membranes for gasseparation. The size of the particles is important to the activity of themembrane in this application and nanosize particles are difficult to obtain innon-aggregat...

Research paves the way for faster, better, cheaper DNA detection method

... oligonucleotides on the slide's surface. The gold nanoparticle probes, each covered with 200 oligonucleotide stra...raphic developing solution. In solution, each gold nanoparticle becomes covered with silver and grows in size, increasing the signal by a factor of 100,000. With cu...

Both shape and size matter in tiny world of nanoparticles

...ientists at Northwestern University have created a nanoparticle with a new shape that could be a useful tool in the race to detect biological threats. The nanoprism, which resembles a tiny Dorito, exhibits unusual optical properties that could be used to improve biodetectors, allowing them to test for a far great...

Electrodes and nanoprobes signal new DNA detection method

... An innovative pairing of microelectrodes and gold nanoparticle probes is at the heart of new technology developed...e oligonucleotides on the slides surface. The gold nanoparticle probes, each covered with 200 oligonucleotide strands, latch on to these pairings. The probes are th...

Nanosphere announces DNA detection breakthrough published in Science

...ical conductivity measurements facilitated by gold nanoparticle probes. The ultra-sensitive and specific detectio... procedures. This work builds on the foundation of nanoparticle technology research conducted by Northwestern University professors and Nanosphere co-founders Chad ...

Small research big on Illinois campus

... thrusts is aimed at the synthesis and assembly of nanoparticle gels and polymer nanocomposites, Schweizer said. We want to use tailored nanoscale building blocks to control the structure and mechanical properties of macroscopic materials.In another research thrust, the scientists are exploring new strategies fo...

Clemson researchers create biosensors to protect nation's food and water supplies

...ng food or water that has been contaminated. "The nanoparticle can move into crevices in the food source, where a pathogen could be hidden from microscopic view," Dawson said. "The particle's extremely small size increases the odds that the antibody and antigen will link, enabling the sensor to give off a glow. ...

Scientists at the Scripps Research Institute design gene-tipped tumor regressor 'smartbombs'

...lood vessels or any other tissue. This anti-cancer nanoparticle is like a smart bomb that delivers its multiple wa...f and studied for many years, but this anti-cancer nanoparticle is a new type of anti-angiogenic. Unlike other, "systemic" angiogenesis blockers, which become diffu...

Non-invasive imaging technique detects plaques beginning to form in vessels

...ted only new capillaries, the team also packed the nanoparticle with molecules that specifically detect a protein called avb3, which is abundant in rapidly growing capillaries. In so doing, the nanoparticles mainly latched onto cells that contain avb3. "You can load these nanoparticles with whatever you want, lik...

Beyond patches and pills: the remarkable future of drug delivery

...efore they start. To this end, they are developing nanoparticle sensors -- tiny particles on the order of a single atom that will recognize compounds, such as glucose and cholesterol, whose overproduction may signal disease. The particles will then trigger a mechanism that tells a system (like the pharmacy on a c...

Rice develops nanosensor for precision chemical analysis

...al properties of metal nanoshells, a novel type of nanoparticle invented at Rice. "This result is extremely important because it is the first time that anyone has actually designed and engineered a nanosensor specifically for obtaining chemical information," said nanoshell inventor Naomi Halas, the Stanley C. Moo...

Gold 'nanoplugs' wire up enzymes

...alytic system to measure glucose levels. "The gold nanoparticle --1.4 nanometers, or billionths of a meter, in dia... oxidizes glucose, electrons flow through the gold nanoparticle into the electrode: The higher the current, the higher the level of glucose. The experimental result...

Biomedical engineer constructs illuminating nanoparticles for medical imaging and gene detection

... constructs the nanosensors, which he calls "smart nanoparticle probes," by attaching short pieces of DNA (oligonu...one end and a sulfur atom at the other end. When a nanoparticle probe binds to its target molecule, an energy transfer causes the quencher to be suppressed and the ...

Gold nanoparticles and catalytic DNA produce colormetric lead sensor

...te. The colorimetric sensor is based upon DNA-gold nanoparticle chemistry, and could be used for sensing a variety...f contaminant metal ions. By applying the DNA-gold nanoparticle solution to a substrate, the researchers can create a biosensor that functions in the same manner as...

Von Liebig Center awards funding to six projects to commercialize UCSD faculty research

... mechanism by which a combination of a fluorescent nanoparticle (quantum dot) and quencher fluorophore can be used... (DC or AC) to the sample, causing the fluorescent nanoparticle and quencher probe combination that is hybridized to the target DNA sequence to produce an oscillati...

UCF brain cell research spawns hope for longer life

...nflammatory reactions. Initial tests show that the nanoparticle anti-oxidants regenerate once they penetrate the cell -- meaning one dose could conceivably continue its therapeutic effects indefinitely. Rzigalinski introduced the collaboration to her colleagues at the NATURE biotechnology symposium in Miami earli...

Pinpointing viruses in body scans

... colds, in blood samples. Perez says the magnetic nanoparticle technique could rapidly become a reality, as all the components it uses are already available commercially. Similar particles have already been shown to be safe in the body in earlier experiments on the detection of secondary prostate cancer tumours ...

New method could aid in prostate and breast cancer diagnosis

...team outfitted a magnetic microparticle and a gold nanoparticle each with the antibody of the protein target, PSA....icles. The key is that attached to each tiny gold nanoparticle (just 30 nanometers in diameter) are hundreds to thousands of identical strands of DNA. Mirkin calls...

'Grey goo' misconceptions could harm poor in developing world

... and targeted administration of vaccinations using nanoparticle delivery systems; the ability to repair skeletal tissue damaged by traffic accidents, the so-called "unseen epidemic" of developing countries, using nanotech-based bone scaffolds; better monitoring of soil and crop toxicity levels through enzyme bios...

UCLA chemists develop new coating for nanoscale probes

... for this process in cancer treatment, if a hybrid nanoparticle could be created that was specifically targeted to identify and destroy cancer cells in the body." ...

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