Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Another Tool in the Nano Toolbox: Berkeley Lab Scientists Use Electron Beam to Manipulate Nanoparticles

Moving a nanoparticle at will: this image depicts the trajectories of the electron beam movement and the overall movement of a trapped gold nanoparticle.
Moving a nanoparticle at will: this image depicts the trajectories of the electron beam movement and the overall movement of a trapped gold nanoparticle.

Abstract:
Nanotechnology, the manipulation of matter at the atomic and molecular scale, holds great promise for everything from incredibly fast computers to chemical sensors that can sniff out cancer cells. But how does one go about building a device made of parts that are one-billionth of a meter in size?



In this video from a transmission electron microscope, an electron beam traps two gold nanoparticles and drags them along.



An electron beam is used to sweep gold nanoparticles into a cluster, an approach that could lead to a new way to assemble nanostructures.

Another Tool in the Nano Toolbox: Berkeley Lab Scientists Use Electron Beam to Manipulate Nanoparticles

Berkeley, CA | Posted on January 22nd, 2013

Over the years, scientists have developed tools for this microscopic handiwork. Take for example optical tweezers, which use light to trap and move objects that measure one-millionth of a meter. Researchers use optical tweezers to manipulate biological materials such as proteins. However, using light to manipulate even smaller nanometer-scale objects is tricky business. There are other techniques for the job, but it's safe to say there's plenty of room for more tools in the nano toolbox.

Now, scientists from Berkeley Lab and the National University of Singapore have developed a way to manipulate nanoparticles using an electron beam. As recently reported, they used an electron beam from a transmission electron microscope to trap gold nanoparticles and direct their movement. They also used the beam to assemble several nanoparticles into a tight cluster. And, because the beam is from an electron microscope, they were able to image the nanoparticles as they manipulated them.

Based on their results, the scientists believe their approach could lead to a new way to build nanostructures one nanoparticle at a time.

The research was co-led by Haimei Zheng of Berkeley Lab's Materials Sciences Division. She and colleagues began by sandwiching a ten-nanometer-diameter particle of gold between two transparent silicon nitride membranes. This liquid-filled sandwich, called an environmental cell, enables objects to be imaged with a transmission electron microscope at a sub-nanometer resolution. The environmental cell was developed at Berkeley Lab.

They then passed an electron beam through the cell and trapped the nanoparticle in the beam. The nanoparticle bounced to and fro within the beam, but never escaped its confines. When they moved the beam in any direction at a speed of about ten nanometers per second, the trapped nanoparticle was dragged across the membrane surface.

Next, the scientists trapped several gold nanoparticles inside the beam and corralled them into a tight bunch by rapidly decreasing the diameter of the beam from 200 nanometers to 50 nanometers. They also moved the cluster of nanoparticles over the membrane surface by moving the electron beam.

Zheng and colleagues are now working to understand how the electron beam traps the nanoparticles. They also want to develop ways to automate the positioning and movement of nanoparticles, which is a key step toward the fast and efficient assembly of nanostructures.

####

About Berkeley Lab
A U.S. Department of Energy National Laboratory Operated by the University of California

For more information, please click here

Contacts:
Dan Krotz

Copyright © Berkeley Lab

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Get ready for NanoDays! March 5th, 2015

American Chemical Society Presidential Symposia: nanoscience, international chemistry March 5th, 2015

CiQUS researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015

Arrowhead to Present at 2015 Barclays Global Healthcare Conference March 4th, 2015

Laboratories

American Chemical Society Presidential Symposia: nanoscience, international chemistry March 5th, 2015

New research could lead to more efficient electrical energy storage March 4th, 2015

Govt.-Legislation/Regulation/Funding/Policy

New research could lead to more efficient electrical energy storage March 4th, 2015

Energy-generating cloth could replace batteries in wearable devices March 4th, 2015

The taming of magnetic vortices: Unified theory for skyrmion-materials March 3rd, 2015

Black phosphorus is new 'wonder material' for improving optical communication March 3rd, 2015

Nanomedicine

Patent for the Novel Cancer Therapies – Ceramide Nanoliposomes March 4th, 2015

Arrowhead to Present at 2015 Barclays Global Healthcare Conference March 4th, 2015

Democratizing synthetic biology: New method makes research cheaper, faster, and more accessible March 3rd, 2015

Pens filled with high-tech inks for do-it-yourself sensors March 3rd, 2015

Discoveries

American Chemical Society Presidential Symposia: nanoscience, international chemistry March 5th, 2015

Experiment and theory unite at last in debate over microbial nanowires: New model and experiments settle debate over metallic-like conductivity of microbial nanowires in bacterium March 4th, 2015

Magnetic vortices in nanodisks reveal information: Researchers from Dresden and Jülich use microwaves to read out information from smallest storage devices March 4th, 2015

CiQUS researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015

Announcements

Get ready for NanoDays! March 5th, 2015

American Chemical Society Presidential Symposia: nanoscience, international chemistry March 5th, 2015

CiQUS researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015

Arrowhead to Present at 2015 Barclays Global Healthcare Conference March 4th, 2015

Tools

Keysight Technologies Shifts to Direct Sales of High-Performance Products in North America March 3rd, 2015

Forbidden quantum leaps possible with high-res spectroscopy March 2nd, 2015

International research partnership tricks the light fantastic March 2nd, 2015

Important step towards quantum computing: Metals at atomic scale March 2nd, 2015

Nanobiotechnology

Experiment and theory unite at last in debate over microbial nanowires: New model and experiments settle debate over metallic-like conductivity of microbial nanowires in bacterium March 4th, 2015

Untangling DNA with a droplet of water, a pipet and a polymer: With the 'rolling droplet technique,' a DNA-injected water droplet rolls like a ball over a platelet, sticking the DNA to the plate surface February 27th, 2015

Bacteria network for food: Bacteria connect to each other and exchange nutrients February 23rd, 2015

Building tailor-made DNA nanotubes step by step: New, block-by-block assembly method could pave way for applications in opto-electronics, drug delivery February 23rd, 2015

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







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE