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Tag: "nanoscale" at biology news

FDA sees nanotech challenges in every product category it regulates

...he chemical, physical and biological properties of nanoscale materials are often different from their larger counterparts, they potentially lead to different safety issues. The report’s recommendations that FDA provide clear nanotechnology-associated guidance for manufacturers in all areas of agency responsibi...

Magnetic computer sensors may help study biomolecules

...k below the membrane—a field strong enough to trap nanoscale magnetic particles. The NIST experiments demonstrated that the spin valves not only can trap magnetic particles, but also can be used as the pivot point for rotating strands of particles when a rotating magnetic field is applied. According to the ...

Nanotextured implant materials: blending in, not fighting back

...p much of this lining and create a texture of fine nanoscale bumps on the inside of the blood vessel. This cont...less than 1 micron in size to create titanium with nanoscale surface texture. When they compared samples of the nanostructured material to conventional titanium ...

Nanotechnology meets biology and DNA finds its groove

... extract single DNA molecules and position them in nanoscale troughs or "slits," where they can be easily analyzed and sequenced. The technique, which according to its developers is simple and scalable, could lead to faster and vastly more efficient sequencing technology in the lab, and may one day help und...

Ultrathin films deliver DNA as possible gene therapy tool

...M. Lynn and his colleagues have created ultrathin, nanoscale films composed of DNA and water-soluble polymers t... chemical and biological engineering, has used his nanoscale films to coat intravascular stents, small metal-mesh cylinders inserted during medical procedures to...

Penn researcher shows that DNA gets kinky easily at the nanoscale

...ology, biology and medicine all intersect. "The nanoscale just happens to also be the scale at which cell biology operates," Nelson said. "We're entering an era when we are able to use the tools of nanotechnology to answer fundamental puzzles of biology." ...

Gold nanoparticles prove to be hot stuff

...of Colorado at Boulder. Biophysicists often study nanoscale and even picoscale mechanics by using lasers to both apply force to and track the position of fragile biomolecules such as DNA or protein by manipulating a tiny sphere--typically polystyrene--attached to the molecule. The JILA team would like to find...

Bones at the nanoscale

...RF have just discovered the way deformation at the nanoscale takes place in a bone by studying it with the sync...of organic and inorganic components at a micro and nanoscale level under tensile stress. The scientists realised that when strain/pressure is applied to a bon...

NHGRI aims to make DNA sequencing faster, more cost effective

... molecules. The goal of this group is to fabricate nanoscale channels in which single molecules of DNA will pass between nano-electrodes that are less than 2 nanometers apart, to measure an electric current that will identify individual bases. Xiaohua Huang, Ph.D., University of California, San Diego, La Jo...

Researchers to develop active nanoscale surfaces for biological separations

... Polytechnic Institute, the group plans to develop nanoscale surfaces that actively reassemble in the presence ...re building a molecular obstacle course made up of nanoscale domains. When an electric field is applied at one end, DNA molecules will move across the surface an...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

...ecise control, providing even larger templates for nanoscale carbon structures used in computer screen field emission displays and semi-conductors that regulate the flow of electricity in sensors, some only a fraction of the width of a hair. ATRP differs significantly from conventional polymer manufacturing ...

MIT material stops bleeding in seconds

... to open wounds, the peptides self-assemble into a nanoscale protective barrier gel that seals the wound and halts bleeding. Once the injury heals, the nontoxic gel is broken down into molecules that cells can use as building blocks for tissue repair. "We have found a way to stop bleeding, in less than 15 se...

Researchers make nanosheets that mimic protein formation

...," Glotzer said. "In the fabrication of functional nanoscale materials and devices, self-assembly offers substantial advantages over traditional manufacturing approaches, if we can design the building blocks appropriately. This is what we're trying to do." ...

Engineer ramps up protein production, develops versatile viral spheres

...tein synthesis, including production of versatile, nanoscale viral spheres that can act as delivery trucks for ...hen 180 copies of the same protein assemble into a nanoscale soccer ball. "We think these little spheres, 27 nanometers in diameter, will form the basis for a ...

Embryonic stem cells do better on bumpy nanoscale mattress

...cultured on a substrate deliberately printed with nanoscale grooves and ridges, according to researchers from the University of Wisconsin–Madison. The researchers used soft lithography to stamp polyurethane substrates with a nano- micron scale topography; a rugged cellular landscape ranging from a few bi...

World's smallest cancer detection device

...rating cutting-edge science and engineering at the nanoscale level with vital biomedical research, it is our in...y in animals. The microchip will be assembled from nanoscale components so that several different functions can be carried out within a very small package. The g...

Blood-compatible nanoscale materials possible using heparin

...m Rensselaer Polytechnic Institute have engineered nanoscale materials that are blood compatible using heparin, an anticoagulant. The heparin biomaterials have potential for use as medical devices and in medical treatments such as kidney dialysis. The researchers prepared several materials with heparin compos...

Smell of success for nanobiosensors

...pable of performing electrical measurements at the nanoscale level has been developed and adapted to an atomic force microscope with atofarad precision (10 -15 ). This, Samitier says, could lead to medical applications to diagnose organ failure, bacterial infections or diseases such as cancer being made comme...

Connect the Quantum Dots

...nometers, is valuable research since matter at the nanoscale has unique properties that enable novel applications. Medical researchers work at the nano-scales can develop new drug delivery methods, therapeutics and pharmaceuticals. ...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

.... The key to the method's effectiveness is using nanoscale surface patterns to create a "superhydrophobic" (or water-repellent) surface on which to collect extremely tiny droplets of fluids ?a surface formed by mimicking the natural self-cleaning process exhibited by the leaves of the Lotus plant, Hayes expl...

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