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nanotube in Biological News

Studying component parts of living cells with carbon nanotube cellular probes

Carbon nanotubes (CNTs) have shown great potential for use as cellular probes. As nanopipes they can be used to transport liquids to or from cells and inject solutions or drugs directly into individual cells and individual organelles within the cells. In addition, because of the small diameters o...

Carbon nanotube absorption measured in worms, cancer cells

University of Michigan researchers have discovered how to measure the absorption of multi-walled carbon nanoparticles into worms and cancer cells, a breakthrough that will revolutionize scientists' understanding of how the particles impact the living environment. A team led by U-M chemical engin...

A quicker, cheaper SARS virus detector -- one easily customizable for other targets

...measurable jump in current through the nanowire. The basic principle of nanotube and nanowire biosensors for protein detection was first demonstrated in 200...e antibody surface." The Zhou lab, which has specialized in nanowire and nanotube technology for years, performed the complex set of procedures to synthesize...

Nanoneedle is small in size, but huge in applications

...mechanics and physical properties inside cells. To create a nanoneedle, the researchers begin with a rigid but resilient boron-nitride nanotube. The nanotube is then attached to one end of a glass pipette for easy handling, and coated with a thin layer of gold. Molecular cargo is then attached to the gold s...

6 young ASU faculty earn NSF Career awards

...anoengineering to be more broadly applied in practical pursuits. Jiang's work focuses on carbon nanotubes macroscopic assembly specifically carbon nanotube macro-films. His NSF Career award will provide about $400,000. These macroscale structures with nanoscale details are proving highly effective in a...

UConn chemists find secret to increasing luminescence efficiency of carbon nanotubes

...lying nanotube. It is that active cleaning of the nanotube surface that allows the nanotube to achieve luminescence efficiency to as high as 2... QuickTime animation of how a single-walled carbon nanotube is wrapped with the synthetic flavin derivative to...

Nanotube's 'tapestry' controls its growth

... HOUSTON -- (Feb. 5, 2009) -- Rice University materials scientists have put a new "twist" on carbon nanotube growth. The researchers found the highly touted nanomaterials grow like tiny molecular tapestries, woven from twisting, single-atom threads. Carbon...

The gold standard: Biodesign Institute researchers use nanoparticles to make 3-D DNA nanotubes

... VIDEO: In this DNA nanotube configuration, again using 5-nm size gold nanoparticles, the nanoparticles form stacked rings around the DNA. Click here for mor...

Pitt researchers create non-toxic clean-up method for potentially toxic nano materials

... School of Public Health. These results open the door to further development of safe and natural methodswith HRP or other enzymesof cleaning up carbon nanotube spills in the environment and the industrial or laboratory setting. Carbon nanotubes are one-atom thick rolls of graphite 100,000 times smaller tha...

MIT nanotubes sniff out cancer agents in living cells

...sue does not, which makes it easier to see the nanotubes light up. Each nanotube is coated with DNA, which binds to DNA-damaging agents present in the cell....n how they interact," Strano said. Because they are coated in DNA, these nanotube sensors are safe for injection in living cells. (Nanotubes can come in many...

American Chemical Society's Weekly PressPac -- Dec. 3, 2008

... vital signs, they say. MTS ARTICLE #2 FOR IMMEDIATE RELEASE "Smart Electronic Yarns and Wearable Fabrics for Human Biomonitoring made by Carbon nanotube Coating with Polyelectrolytes" DOWNLOAD FULL TEXT ARTICLE http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/jf8016095 CONTACT: Nichol...

Clemson researchers advance nano-scale electromechanical sensors

...n be shrunk down to the nano-scale and the operating electronics can be contained on a single tiny chip. Rao's research has shown that a single carbon nanotube can be used as a vibrating cantilever. Rao credits Clemson Professor Emeritus of Physics Malcolm Skove, who discovered that measuring the resonant ...

AVS 55th International Symposium & Exhibition, Oct. 19-24

...ating glass, for residential buildings..." See: http://www.avssymposium.org/paper.asp?abstractID=1390 . HIGH-POWER NANOTUBES "...The carbon nanotube field effect transistor has the potential to deliver functional performance and efficiency that exceed silicon-based power devices by more than an ord...

Simulations help explain fast water transport in nanotubes

...generally been attributed to the smoothness of the nanotube walls and their hydrophobic, or water-hating surfa...For very small nanotubes, water molecules fill the nanotube in single-file fashion, and orient in one directio...g molecules. This coupling moves water through the nanotube in a helical, screw-like fashion." In addition t...

Coating improves electrical stimulation therapy used for Parkinson's, depression, chronic pain

... basic black, formed from carbon nanotubes. The nanotube sheathing improves the signals received and transm...ilities to improve performance. In some tests, the nanotube coating improved performance by fortyfold, while i...attery power and chemical stability. The carbon nanotube coating improves conductivity, which means less en...

American Chemical Society's Weekly PressPac -- Sept. 10, 2008

...battery materials, the researchers say. MTS ARTICLE #4 FOR IMMEDIATE RELEASE "Growth of Manganese Oxide Nanoflowers on Vertically-Aligned Carbon nanotube Arrays for High-Rate Electrochemical Capacitive Energy Storage" DOWNLOAD FULL TEXT ARTICLE http://dx.doi.org/10.1021/nl800925j CONTACT: G...

Story tips from the Department of Energy's Oak Ridge National Laboratory, September 2008

...trometer that captures ions in an electromagnetic field, to develop a high speed DNA sequencing device. Using the Paul trap to manipulate DNA between nanotube electrodes could result in a lower cost alternative to nanopore sequencing, which works by moving strands of DNA through a small hole in a membrane. M...

NSF awards two grants to Stevens for nano/micro device fabrication and nano sensor development

...pact on research already being conducted at Stevens, such as nano and micro devices for sensing , communications and medicine , single-electron carbon nanotube memory devices, nanoengineered surfaces for microfluidic and nanobioscience applications, and bottom-up prototyping of microchemical systems . Shi wa...

Slipping through cell walls, nanotubes deliver high-potency punch to cancer tumors in mice

... targeting,' which is using the leaky vasculature of the tumor," he said. "But a more active targeting would be attaching a peptide or antibody to the nanotube drug, one that will bind more specifically to the tumor, which should further enhance the treatment efficacy." Dai's team is already at work develo...

Nanotubes could help study retrovirus transmission between human cells

... information linking membrane bending energy with nanotube formation may provide some clue about the membran...ndia researcher Carl Hayden, who characterized the nanotube formation through a confocal imaging microscope. T...ifetimes of fluorescent labels on the proteins. nanotube formation had been noticed previously by cell biol...

Livermore researchers use carbon nanotubes for molecular transport

...ory are mimicking that process with manmade carbon nanotube membranes, which have pores that are 100,000 times...e LLNL team found that water molecules in a carbon nanotube move fast and do not stick to the nanotube's super...er molecules flying at high speed through a narrow nanotube tunnel," said Hyung Gyu Park, an LLNL postdoctoral...

Spin control: New technique sorts nanotubes by length

...y need to fit in place, and in optical applications, a nanotubes length determines how strongly it will absorb or emit light (see Longer is Better for nanotube Optical Properties.) In 2006, researchers found that you could separate nanotubes by chirality (a measure of the twist in the carbon atom sheet) by...

NJIT applauds students for studies on brain injury, glaucoma and more

...Woo Lee, Palisades Park, a doctoral candidate in electrical and computer engineering, for Single Electron Devices Based on As-Grown Individual Carbon nanotube Bridges and Conductive Polymers. Laila Jai Jallo, Newark, a doctoral candidate in chemical engineering, received second-place recognition for Pa...

American Chemical Society's Weekly PressPac -- April 16, 2008

...hat silicon nanotubes can store hydrogen more efficiently than their carbon nanotube counterparts. The study will appear in the April 24 issue of ACS Journal of...e, the scientists note. MTS ARTICLE #2 FOR IMMEDIATE RELEASE Silicon nanotube as a Promising Candidate for Hydrogen Storage: From the First Principle Cal...

Making sure the wonder materials don't become the wonder pollutant

...l), Plata and colleagues found that the process of nanotube manufacturing produced emissions of at least 15 ar...k, she will collect real-time data from a European nanotube manufacturing facility that is poised to let her s... said. We want to work proactively with the carbon nanotube industry to avoid repeating environmental mistakes...

Story tips from the Department of Energy's Oak Ridge National Laboratory, February 2008

... system that functions like an atom-scale switch. Their approach is to perform first-principles calculations on positioning a molecule inside a carbon nanotube to affect the electronic current flowing across it. The result is an electrical gate at the molecular level: In one position, the molecular gate is op...

Another type of nanotube, a how-to guide to making bamboo-structured carbon nanotubes

...to secure Europe as the international scientific leader in the design, synthesis, growth, characterisation and application of nanotubes, nanowires and nanotube arrays for industrial technology. The present work looked at bamboo-structured carbon nanotubes with a narrow diameter distribution synthesized on ...

American Chemical Society's Weekly PressPac -- Nov. 14, 2007

...y serve as catalysts for hydrogen production and oxidation in fuel cells. Their report, describing a successful electrical connection between a carbon nanotube and hydrogenase, is scheduled for the Nov. issue of ACS' Nano Letters, a monthly journal. In the new study, Michael J. Heben, Paul W. King, and c...

Rice University expert calls for coordination in nanotechnology research

...researchers' languages, methods and materials," which she referred to as "research harmonization" tools. "If you fund five teams to help understand nanotube toxicity and they get five different answers, you are actually worse off because your research creates uncertainty rather than combat it," she said. ...

Using nanotubes to detect and repair cracks in aircraft wings, other structures

... Aerospace and Nuclear Engineering Details of the project are outlined in the paper In situ health monitoring and repair in composites using carbon nanotube additives, which was published online this week by Applied Physics Letters. Rensselaer graduate students Wei Zhang and Varun Sakalkar were co-authors ...

UNC nanotech spin-off forms new venture with Siemens

...y enabled x-ray sources may improve future generations of CT scanners. In 2005, UNC and Xintek announced a major advance by placing multiple carbon nanotube sources in an array. In this multi-pixel configuration all the energy sources the carbon nanotubes can fire at once from different angles, and they ...

American Chemical Society's Weekly PressPac -- Sept. 12, 2007

...all of the key problems involved in fabrication of large networks. Those problems range from aligning SWCNTs in a preset pattern to integrating carbon nanotube circuits into an integrated circuit environment similar to those at the heart of conventional microprocessors. The study describes a method to man...

American Chemical Society's Weekly PressPac -- Aug. 15, 2007

...ucts with an on/off switch Helping the carbon nanotube industry avoid mega-mistakes of the past Acry... 20, 8:00 p.m., Eastern Time Helping the carbon nanotube industry avoid mega-mistakes of the past A new...the environmental and health impacts of the carbon nanotube industry could be severe and costly to repair, Pla...

Beyond batteries: Storing power in a sheet of paper

...aer. Were not putting pieces together its a single, integrated device, he said. The components are molecularly attached to each other: the carbon nanotube print is embedded in the paper, and the electrolyte is soaked into the paper. The end result is a device that looks, feels, and weighs the same as pap...

Brightening prospects of using fluorescent nanotubes in medical applications

...t SWNTs from all the rest in large quantities. nanotube soot is insoluble in water. So researchers routine... and other tissue is transparent – that allows the nanotube light to stand out. Nanotubes are made entir...An example of the possible medical applications of nanotube fluorescence is a collaboration that Hertel and As...

The longest carbon nanotubes you've ever seen

... still slightly less than 2 centimeters long, each nanotube is 900,000 times longer than its diameter. The f...port of the carbon 'building blocks' to the carbon nanotube growth zone," said Shanov. The carbon nanotub... presented in April 2007 at the Single Wall Carbon nanotube Nucleation and Growth Mechanisms workshop organize...

Cells selectively absorb short nanotubes

...hurdle in outlining the parameters contributing to nanotube toxicity is to prepare well-defined and characterized nanotube samples, as they typically contain a distribution ...ies. The team chose to isolate the effects of nanotube length. They first adsorbed short DNA molecules on...

Nanotubes used for first time to send signals to nerve cells

...ed in the May issue of the Journal of Nanoscience and Nanotechnology, these nanotube films could potentially serve as an electrical interface between living tis...tached to their surfaces that may be used to guide cell growth or customize nanotube electrical properties, to cells cultured on unmodified "native" carbon nano...

Stable polymer nanotubes may have a biotech future

... Editor : See how a nanotube is created in this cool movie Scientists at ...al for commercial applications--and forming sturdy nanotube network structures. First the researchers made .... The optical tweezers can be used to custom build nanotube network structures. The work was supported in part...

Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher

...ntly labeled DNA molecules in order to confirm that DNA had attached to the nanotube surfaces and was subsequently hybridized, or matched to its complementary DNA. "We have found that electrical measurement of carbon nanotube devices produce sensor results that are comparable to state-of-the-art opti...
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