Featured Research

from universities, journals, and other organizations

Building Giant 'Nanoassemblies' That Sense Their Environment

Date:
June 24, 2008
Source:
American Chemical Society
Summary:
Researchers in Texas are reporting the design, construction, and assembly of nano-size building blocks into the first giant structures that can sense and respond to changes in environmental conditions.

An optical photograph reveals self-assembly of hybrid nanowires resulting in this golden droplet. Such structures could help develop nanomachines for the medical community, scientists report.
Credit: Courtesy of Pulickel M. Ajayan

Researchers in Texas are reporting the design, construction, and assembly of nano-size building blocks into the first giant structures that can sense and respond to changes in environmental conditions.

Related Articles


The study, scheduled for the July 9 issue of ACS's Nano Letters, a monthly journal, terms those structures "giant" because they are about the size of a grain of rice — millions of times larger than anything in the submicroscopic realm of the nanoworld.

In the new study, Pulickel M. Ajayan and colleagues point out that such structures are a step toward the development of futuristic nanomachines with practical applications in delivering medicines to patients, labs-on-a-chip, and other products. Until now, scientists have had difficulty in using nanomaterials to build more complex, multifunctional objects needed for those applications.

The researchers describe development of a hybrid nanowire consisting of segments with water-repelling carbon nanotubes on one end and water-attracting metal nanowires on the other end. In laboratory tests, they showed that the nanowires could assemble themselves into larger, more complex structures when placed in water. The structures also sensed and responded to their environment by making movements when exposed to chemicals, magnets, and light.

The findings "could lead to the creation of smart materials that are a cornerstone for the development of nanotechnology-based applications," the study notes.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Ou, Fung Suong, Shaijumon, Manikoth M., and Ajayan, Pulickel M. Controlled Manipulation of Giant Hybrid Inorganic Nanowire Assemblies. Nano Lett., Web Release Date: May 29, 2008 DOI: 10.1021/nl080407i

Cite This Page:

American Chemical Society. "Building Giant 'Nanoassemblies' That Sense Their Environment." ScienceDaily. ScienceDaily, 24 June 2008. <www.sciencedaily.com/releases/2008/06/080623093549.htm>.
American Chemical Society. (2008, June 24). Building Giant 'Nanoassemblies' That Sense Their Environment. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2008/06/080623093549.htm
American Chemical Society. "Building Giant 'Nanoassemblies' That Sense Their Environment." ScienceDaily. www.sciencedaily.com/releases/2008/06/080623093549.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins