Home > Press > Researchers Carve with Electricity at the Nanometer Scale
Process may yield miniscule molecular detection devices, semiconducting connectors and molecular sieves
Researchers Carve with Electricity at the Nanometer Scale
August 18, 2005
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
Click on image for larger version.
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.gov
Joshua A. Chamot
University of Arkansas
Kevin W. Lyons
Ajay P. Malshe
University of Arkansas
Ajay Malshe homepage
Copyright © NSF
If you have a comment, please Contact
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015
Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015
Nanocomposites Market Growth, Industry Outlook To 2020 by Grand View Research, Inc. March 21st, 2015
Nanotechnology Drug Delivery Market in the US 2012-2016 : Latest Report Available by Radiant Insights, Inc March 16th, 2015
UT Dallas engineers twist nanofibers to create structures tougher than bulletproof vests March 27th, 2015
Novel nanoparticle therapy promotes wound healing March 27th, 2015
Designer's toolkit for dynamic DNA nanomachines: Arm-waving nanorobot signals new flexibility in DNA origami March 27th, 2015
Using magnetic fields to understand high-temperature superconductivity: Los Alamos explores experimental path to potential 'next theory of superconductivity' March 27th, 2015
LAMDAMAP 2015 hosted by the University March 26th, 2015
FEI Technology Award of the German Neuroscience Society Goes to Benjamin Judkewitz of the University of Berlin: Bi-annual award honors excellence in brain research during the German Neuroscience Society’s Annual Meeting, held 18-21 March 2015 March 26th, 2015
Square ice filling for a graphene sandwich March 26th, 2015
Nanorobotic agents open the blood-brain barrier, offering hope for new brain treatments March 25th, 2015