HOME >> BIOLOGY >> NEWS
Stable polymer nanotubes may have a biotech future

Scientists at the National Institute of Standards and Technology (NIST) have created polymer nanotubes that are unusually long (about 1 centimeter) as well as stable enough to maintain their shape indefinitely. Described in a new paper in Proceedings of the National Academy of Sciences,* the NIST nanotubes may have biotechnology applications as channels for tiny volumes of chemicals in nanofluidic reactor devices, for example, or as the "world's smallest hypodermic needles" for injecting molecules one at a time.

Carbon nanotubes are of keen interest in nanotechnology research, especially for making ultrastrong fibers and other structures. Nanotubes made from other materials are used for transport in biochemical applications, but are typically fragile and usually collapse within a few hours. The NIST team developed processes for extending the shelf life of polymer nanotubes--considered essential for commercial applications--and forming sturdy nanotube network structures.

First the researchers made tiny, fluid-filled spherical containers with bi-layer membranes consisting of polymers with one end that likes water and one end that does not. (These fluid-filled containers are a spin-off of liposomes, artificial cells with fatty membranes used in cosmetics and for drug delivery.) The researchers made the membranes stretchy by adding a soap-like fluid to change the polymer membranes' mechanical properties. Then they used "optical tweezers" (highly focused infrared lasers) or tiny droppers called micropipettes to pull on the elastic membranes to form long, double-walled tubes that are less than 100 nanometers in diameter. (View a movie of this process at: http://www.nist.gov/public_affairs/images/Polymer_Nanotubes_Animation.htm.)

A chemical was added to break bonds between atoms in one section of the polymers and induce new bonds to form between the two different
'"/>

Contact: Laura Ost
laura.ost@nist.gov
301-975-4034
National Institute of Standards and Technology (NIST)
2-Feb-2006


Page: 1 2

Related biology news :

1. UCSB researchers show how to make polymeric micro- and nanoparticles
2. Researcher examines polymers created with poultry feathers
3. Applied scientists create wrinkled skin on polymers
4. MIT engineers probe spiders polymer art
5. Virginia Tech chemists create new polymers by adding DNA base pairs
6. New U. of Colorado polymer has applications for dentistry, electronics, automobiles
7. New gas sensors patterned with conducting polymer
8. New RNA polymerase discovered in plants
9. DuPonts first biologically derived polymer receives global recognition
10. Tough tubes -- Carbon nanotubes endure heavy wear and tear
11. Cells selectively absorb short nanotubes

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/1/2020)... (PRWEB) , ... May 01, 2020 , ... More than ... Comprehensive Cancer Center’s High-Risk Cancer Program, which is led by two genetic counselors. , ... solutions, today announced it is teaming up with UConn’s High Rick Program to ensure ...
(Date:4/28/2020)... FT. LAUDERDALE, Fla. (PRWEB) , ... April 27, ... ... official launch. The first-of-its-kind category-defining service was started by three teenagers with an ... a change in the world during the time of great need and suffering, ...
(Date:4/22/2020)... ... April 20, 2020 , ... RCH Solutions (RCH ), a global ... announces the hiring of Michael Wlodarczyk as Director of Sales and Business Development. Based ... grow the company’s already strong presence across the Northeast. , “We continue to see ...
Breaking Biology News(10 mins):
(Date:5/28/2020)... ... 2020 , ... Genedata, the leading provider of enterprise software ... 17.0, the latest version of its enterprise software for the automated analysis, visualization, ... host a webinar on June 10, 2020, detailing and demonstrating the features and ...
(Date:5/21/2020)... ... May 21, 2020 , ... Threats to intellectual ... harm , Contrary to conventional wisdom that says the coronavirus pandemic will generally ... will emerge from the pandemic commercially weaker, dealing with delays in new product ...
(Date:5/21/2020)... ... May 20, 2020 , ... ... Prakash, who will serve as the company’s executive vice president of product engineering ... Exo is disrupting the medical imaging space, bringing more than 24 years of ...
(Date:5/15/2020)... WESTBURY, N.Y. (PRWEB) , ... May 14, 2020 , ... ... to get unforeseen and the most pressing questions answered quickly as the need arises. ... compliance-related topics, offering valuable advice at affordable rates. , Lachman OnCall™ SMEs are ...
Breaking Biology Technology:
Cached News: