- About Us
- Career Center
- Nano-Social Network
- Nano Consulting
- My Account
Process may yield miniscule molecular detection devices, semiconducting connectors and molecular sieves
By applying electric current through a thin film of oil molecules, engineers have developed a new method to precisely carve arrays of tiny holes only 10 nanometers wide into sheets of gold. The new system, called Electric Pen Lithography (EPL), uses a scanning-tunneling microscope, fitted with a tip sharpened to the size of a single atom, to deliver the charge through the dielectric oil to the target surface.
Using their new Electric Pen Lithography technique, University of Arkansas researchers carved the letters "NSF" into a gold sheet. The holes are only 10 nanometers in diameter. Copyright © and Credit: Ajay Malshe, University of Arkansas
With EPL, the researchers can both see and manipulate their target at the same time, all without the constraints of the vacuum chamber required by similar processes. With such tight control, the researchers hope the relatively inexpensive procedure will have applications for crafting single DNA detection devices such as nanopores, nanoscale interconnects in biological and semiconducting devices, molecular sieves for protein sorting and nanojets for fuel or drug delivery.
Mechanical engineer Ajay Malshe of the University of Arkansas, his students Kumar Virwani and Devesh Deshpande, and co-investigator Kamalakar Rajurkar of the University of Nebraska, Lincoln will present the new innovation at the International Institution for Production Engineering Research General Assembly in Antalya, Turkey, Aug. 21-27.
For additional information, see the University of Arkansas release:
Oil Worth Its Weight in Gold in Directed Nanomachining
This research was supported by NSF Grant #0423698
Collaborative Research: Development Of Nano-Electrical Discharge Machining (NANO-EDM) For Advanced Manufacturing
About the National Science Foundation:
The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering, with an annual budget of nearly $5.47 billion. NSF funds reach all 50 states through grants to nearly 2,000 universities and institutions. Each year, NSF receives about 40,000 competitive requests for funding, and makes about 11,000 new funding awards. The NSF also awards over $200 million in professional and service contracts yearly.
For more information, please visit www.NSF.govMedia Contacts:
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
|Related News Press|
Chemical cages: New technique advances synthetic biology February 10th, 2016
A fast solidification process makes material crackle February 8th, 2016
Research reveals carbon films can give microchips energy storage capability: International team from Drexel University and Paul Sabatier University reveals versatility of carbon films February 11th, 2016
Creating a color printer that uses a colorless, non-toxic ink inspired by nature February 11th, 2016
SLAC X-ray laser turns crystal imperfections into better images of important biomolecules: New method could remove major obstacles to studying structures of complex biological machines February 11th, 2016
Nanoparticle reduces targeted cancer drug's toxicity February 11th, 2016
Scientists take nanoparticle snapshots February 10th, 2016
Making sense of metallic glass February 9th, 2016
Metal oxide sandwiches: New option to manipulate properties of interfaces February 8th, 2016