Navigation Links
Researchers discover breakthrough technique that could make electronics smaller and better

An international group of researchers from the University of Minnesota, Argonne National Laboratory and Seoul National University have discovered a groundbreaking technique in manufacturing nanostructures that has the potential to make electrical and optical devices smaller and better than ever before. A surprising low-tech tool of Scotch Magic tape ended up being one of the keys to the discovery.

The research is published today in Nature Communications, an international online research journal.

Combining several standard nanofabrication techniqueswith the final addition of the Scotch Magic taperesearchers at the University of Minnesota created extremely thin gaps through a layer of metal and patterned these tiny gaps over the entire surface of a four-inch silicon wafer. The smallest gaps were only one nanometer wide, much smaller than most researchers have been able to achieve. In addition, the widths of the gaps could be controlled on the atomic level. This work provides the basis for producing new and better nanostructures that are at the core of advanced electronic and optical devices.

One of the potential uses of nanometer-scale gaps in metal layers is to squeeze light into spaces much smaller than is otherwise possible. Collaborators at Seoul National University, led by Prof. Dai-Sik Kim, and Argonne National Laboratory, led by Dr. Matthew Pelton, showed that light could readily be squeezed through these gaps, even though the gaps are hundreds or even thousands of times smaller than the wavelength of the light used. Researchers are very interested in forcing light into small spaces because this is a way of boosting the intensity of the light. The collaborators found that the intensity inside the gaps is increased by as much as 600 million times.

"Our technology, called atomic layer lithography, has the potential to create ultra-small sensors with increased sensitivity and also enable new and exciting experiments at the nanoscale like we've never been able to do before," said Sang-Hyun Oh, one of the lead researchers on the study and a professor of electrical and computer engineering in the University of Minnesota's College of Science and Engineering. "This research also provides the basis for future studies to improve electronic and photonic devices."

One of the most surprising outcomes of the research is that Scotch Magic tape was one of the keys to the discovery. Etching one-nanometer-wide gaps into metals is not feasible with existing tools. Instead, the researchers in Oh's team constructed the nano-gaps by layering atomic-scale thin films on the sides of metal patterns and then capping the structure with another metal layer. No expensive patterning tools were needed to form the gaps this way, but it was challenging to remove the excess metals on top and expose the tiny gaps. During a frustrating struggle of trying to find a way to remove the metal films, University of Minnesota Ph.D. student and lead author of the study Xiaoshu Chen found that by using simple Scotch Magic tape, the excess metals could be easily removed.

"The Scotch tape works nicely, which was unexpected," said Oh. "Our technique is so simple yet can create uniform and ultra-small gaps like we've never been able to do before. We hope that it will rapidly be taken up by many researchers."


Contact: Rhonda Zurn
University of Minnesota

Related biology technology :

1. New England Biolabs Introduces Polbase, an Information Repository of Scientific Data for Polymerase Researchers
2. In new quantum-dot LED design, researchers turn troublesome molecules to their advantage
3. Multidisciplinary team of researchers develop world’s lightest material
4. Researchers shrink tumors and minimize side effects using tumor-homing peptide to deliver treatment
5. Innovative MetaMorph® NX Software Shatters Barriers Between Researchers and Image Analysis Goals with Exclusive Visual Workflow
6. UCLA researchers demonstrate fully printed carbon nanotube transistor circuits for displays
7. Penn and Brown researchers demonstrate earthquake friction effect at the nanoscale
8. Two Top Biological Imaging Centers Offer Powerful Free Online Tool to Researchers, Educators, and Public
9. Researchers develop one of the worlds smallest electronic circuits
10. MU researchers identify key plant immune response in fight against bacteria
11. Researchers realize high-power, narrowband terahertz source at room temperature
Post Your Comments:
(Date:10/12/2015)... Oct. 12, 2015 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ: ... engaged in developing and commercializing novel treatments in oncology, ... Dennis Turpin , the Company,s former Senior Vice ... its Quebec City office.  ... Chief Executive Officer of the Company commented, "After a ...
(Date:10/12/2015)... PHILADELPHIA , October 12, 2015 ... alternative to print version for enriched online experience ... media alternative to print version for enriched online ... offers user-friendly, multi media alternative to print version ... a world-leading provider of scientific, technical and medical information ...
(Date:10/12/2015)... ... , ... NeuMedics Inc., is a specialty biopharmaceutical company focused on identifying and ... be administered as an eye drop, announced today it has been selected to present ... place October 25th to October 28th at The Cleveland Clinic, Cleveland, Ohio. The ...
(Date:10/10/2015)... , le 10 octobre 2015 Le 8 octobre, ... intégré dans le Registre du Congrès sa déclaration ... pour la sensibilisation autour du plasma (IPAW), qui ... sponsorisée par la Plasma Protein Therapeutics Association ... à : , Sensibiliser l,opinion publique ...
Breaking Biology Technology:
(Date:10/8/2015)... Connecticut , October 8, 2015 ... ("NXT-ID" or the "Company"), a biometric authentication company ... creator of the Wocket® smart wallet announces that ... 2015 were approximately $410,000 compared with $113,00 for ... for the 9 months ended September 30, 2015 ...
(Date:10/6/2015)... , Oct. 6, 2015 Track Group, Inc. ... that it has signed a contract with the Virginia ... the full range of sentences under the Department,s oversight. ... the Americas. "This contract with the Virginia DOC will ... US and advances our position as a trusted leader ...
(Date:10/2/2015)... Oct. 02 2015 ... "Enforcing the Law Using Biometrics" report ... has announced the addition of the "Enforcing ... offering. --> Research and Markets ( ... "Enforcing the Law Using Biometrics" report ...
Breaking Biology News(10 mins):