Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > New technique to detect and manipulate nano-objects using plasmonic nano-cavities

OpticalTrapping: SIBA plasmonic trapping using a Fabry–Pérot nanopore cavity
OpticalTrapping: SIBA plasmonic trapping using a Fabry–Pérot nanopore cavity

Abstract:
Imec researchers have presented a new approach to detect and manipulate nano-objects. The technique makes use of plasmonic excitation in nanocavities. In a demonstration, a rectangular nanocavity was used to detect the presence of 22nm beads. This approach may open new routes to create optical tweezers at the nanoscale, for ultra-accurate sensing, trapping, and arranging of nanoscale objects, such as biomolecules (e.g. proteins or DNA).

New technique to detect and manipulate nano-objects using plasmonic nano-cavities

Leuven, Belgium | Posted on March 16th, 2012

Optical trapping techniques, the so called optical tweezers, are used to trap and manipulate objects. A highly focused laser beam provides an attractive or repulsive force to physically hold and move microscopic dielectric objects (down to micrometer-scale). But this technique cannot be applied straightforward to nanoscale objects. The energy required to manipulate such small objects is simply too large in relation to their size and would destroy the objects. Recently, researchers have therefore come up with the idea to make use of the strong local fields of metal nanostructures that are excited by light.

When metal nanostructures are illuminated with visible to near-infrared light, strong local electromagnetic fields are generated. These are caused by the collective oscillations of conduction electrons - called surface plasmons. These fields can be detected and visualized e.g. through surface-enhanced Raman spectroscopy. And because the presence of nanosized objects, such as biomulecules, causes changes in the fields, this phenomenon can be used as a sensor.

But the energy of the local fields could also be used to trap and manipulate the nanosized objects. In a recent publication, imec's researchers now present a new approach that uses this technique. They combine self-induced back action (SIBA) trapping with the latest advances in nanoscale plasmon engineering.

As a demonstration, the researchers designed a resonant trap in the form of a rectangular nanopore. This form of pore allows for tuning the plamons by changing the aspect ratio. This trap was successfully tested with 22nm polystyrene beads, distinguishing between events where one bead was trapped, or those where two beads were trapped at the same time. As part of their work, the researchers also proposed a figure of merit to quantify the efficiency of their trapping mechanism and to compare it to other optical nanotweezers.

####

For more information, please click here

Contacts:
Barbara Kalkis
Maestro Marketing & PR

Copyright © IMEC

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 Links

This work was published in the January edition of Nano-letters:

Related News Press

News and information

Nanoscale view of energy storage January 16th, 2017

Seeing the quantum future... literally: What if big data could help you see the future and prevent your mobile phone from breaking before it happened? January 16th, 2017

NUS researchers achieve major breakthrough in flexible electronics: New classes of printable electrically conducting polymer materials make better electrodes for plastic electronics and advanced semiconductor devices January 14th, 2017

Manchester scientists tie the tightest knot ever achieved January 13th, 2017

Sensors

Nanoscale Modifications can be used to Engineer Electrical Contacts for Nanodevices January 13th, 2017

Researchers create practical and versatile microscopic optomechanical device: Trapping light and mechanical waves within a tiny bullseye, design could enable more sensitive motion detection January 11th, 2017

STMicroelectronics Peps Up Booming Social-Fitness Scene with Smart Motion Sensors for Better Accuracy, Longer Battery Life, and Faster Time to Market January 2nd, 2017

Advance in intense pulsed light sintering opens door to improved electronics manufacturing December 23rd, 2016

Discoveries

Nanoscale view of energy storage January 16th, 2017

Seeing the quantum future... literally: What if big data could help you see the future and prevent your mobile phone from breaking before it happened? January 16th, 2017

NUS researchers achieve major breakthrough in flexible electronics: New classes of printable electrically conducting polymer materials make better electrodes for plastic electronics and advanced semiconductor devices January 14th, 2017

Nanoscale Modifications can be used to Engineer Electrical Contacts for Nanodevices January 13th, 2017

Announcements

Nanoscale view of energy storage January 16th, 2017

Seeing the quantum future... literally: What if big data could help you see the future and prevent your mobile phone from breaking before it happened? January 16th, 2017

NUS researchers achieve major breakthrough in flexible electronics: New classes of printable electrically conducting polymer materials make better electrodes for plastic electronics and advanced semiconductor devices January 14th, 2017

Nanoscale Modifications can be used to Engineer Electrical Contacts for Nanodevices January 13th, 2017

Tools

Distinguishing truth under the surface: electrostatic or mechanic December 31st, 2016

Nanomechanics Inc. Continues Growth in Revenue and Market Penetration: Leading nanoindentation company reports continued growth in revenues and distribution channels on national and international scales December 27th, 2016

Nanometrics to Present at the 19th Annual Needham Growth Conference December 22nd, 2016

Safe and inexpensive hydrogen production as a future energy source: Osaka University researchers develop efficient 'green' hydrogen production system that operates at room temperature in air December 21st, 2016

Alliances/Trade associations/Partnerships/Distributorships

GLOBALFOUNDRIES Expands Partner Program to Speed Time-to-Market of FDX™ Solutions: Increased support affirms FDXcelerator™ Program’s vital role in promoting broader deployment of GLOBALFOUNDRIES’ FDX™ portfolio December 15th, 2016

Infrared instrumentation leader secures exclusive use of Vantablack coating December 5th, 2016

Leti and Grenoble Partners Demonstrate World’s 1st Qubit Device Fabricated in CMOS Process: Paper by Leti, Inac and University of Grenoble Alpes Published in Nature Communications November 28th, 2016

Mechanism for sodium storage in 2-D material: Tin selenide is an effective host for storing sodium ions, making it a promising material for sodium ion batteries October 27th, 2016

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