Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > News > Directional assembly of nanoparticle building blocks becomes possible

February 6th, 2007

Directional assembly of nanoparticle building blocks becomes possible

Abstract:
Nanoparticles are of great scientific interest as they are effectively a bridge between bulk materials and atomic or molecular structures. Nanoparticles that consist of crystals of tens to thousands of atoms have been synthesized and used as "artificial atoms". In order to develop nanoparticle-based devices, though, it is essential to be able to control the placement of nanoparticles relative to one another. Two- and three-dimensional crystals of nanoparticles can be generated in a relatively straightforward manner, but it has been impossible to direct the assembly of the particles with any degree of specificity. The problem is that nanoparticle assembly so far has been constrained by the isotropic interactions between the particles. Isotropic materials have identical values of a property in all crystallographic directions, i.e. they are almost spherical in appearance. Though it is increasingly evident that nanoparticles would become a much more powerful research and engineering tool if it were possible to to enable directional assembly, breaking the interaction symmetry in isotropic materials is a major challenge. Doing so would enlarge the scope of potential applications, because anisotropic assemblies, where the interatomic bond strengths is directionally dependent, have distinctive properties that cannot be found or produced in isotropic assemblies. Researchers at MIT now have reported a simple method to fabricate divalent metal nanoparticles. This work is a first step towards enabling the controllable, directional assembly of nanoparticles into more complex and well-specified structures.

Source:
nanowerk.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Preparing for Nano

How nanoscience will improve our health and lives in the coming years: Targeted medicine deliveries and increased energy efficiency are just two of many ways October 26th, 2016

Searching for a nanotech self-organizing principle May 1st, 2016

Nanotechnology is changing everything from medicine to self-healing buildings: Nanotechnology is so small it's measured in billionths of metres, and it is revolutionising every aspect of our lives April 2nd, 2016

Durnham University's DEEPEN project comes to a close September 26th, 2012

Molecular Nanotechnology

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Assembly of nanoparticles proceeds like a zipper: Viruses and nanoparticles can be assembled into processable superlattice wires according to scientists from Aalto University Finland September 25th, 2017

First 3-D observation of nanomachines working inside cells: Researchers headed by IRB Barcelona combine genetic engineering, super-resolution microscopy and biocomputation to allow them to see in 3-D the protein machinery inside living cells January 27th, 2017

Captured on video: DNA nanotubes build a bridge between 2 molecular posts: Research may lead to new lines of direct communication with cells January 9th, 2017

Discoveries

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Spin current detection in quantum materials unlocks potential for alternative electronics October 15th, 2017

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Long nanotubes make strong fibers: Rice University researchers advance characterization, purification of nanotube wires and films October 17th, 2017

Spinning strands hint at folding dynamics: Rice University lab uses magnetic beads to model microscopic proteins, polymers October 17th, 2017

Rice U. study: Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies October 16th, 2017

Spin current detection in quantum materials unlocks potential for alternative electronics October 15th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project