Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researcher investigates new developments in laser and sensor technology

25.02.2008
Scientists hope that research being conducted in Binghamton University’s Department of Physics, Applied Physics and Astronomy will create lasers that work at wavelengths currently inaccessible.

Funded by a three-year, $300,000 grant from the National Science Foundation as well as a Cottrell College Science Award of $44,244 from the Research Corporation, Oana Malis, assistant professor of physics, is looking for new materials that would allow laser light to be generated in ranges that are not currently accessible. She is particularly interested in how the optical properties of gallium nitride, a compound semiconductor material, could be used.

“These lasers could be used for sensing such as in detecting environmental conditions in a building,” said Malis. “There are defense applications as well.”

In looking for new materials that would allow her to create lasers in the mid-infrared range, Malis is hoping nitrides are the answer. Their optical and electronic properties are not well understood, in part because they’re difficult to make.

The devices in question are incredibly small, less than a millimeter square. The material is like a sandwich of very thin layers, each about a nanometer or two thick. These hundreds or even thousands of layers give nitrides an interesting electronic structure and allow them to emit or absorb light in particular ranges.

“This is an ambitious project,” Malis said. “It’s the first few steps of the process. Getting to the device level, to an actual laser you can hold in your hand, is a little harder.”

She’s especially excited about this project because it will give undergraduate and graduate students experience in applied physics, including materials, advanced techniques such as electron microscopy and making devices and in theoretical modeling.

“I feel it’s important to involve students in applied research,” she said. “Physics students sometimes believe that physics is only about the cosmological level or broad strokes. In the end, physics is an experimental science. It has to do with reality, with the world around us.”

Malis said she tries to encourage her students to think freely and creatively and see that research is more than just following a certain procedure.

“I’m really interested in making things that work,” she said, “in understanding things that will make people’s lives better and will have a technological impact.”

Gail Glover | EurekAlert!
Further information:
http://www.binghamton.edu

More articles from Physics and Astronomy:

nachricht A 100-year-old physics problem has been solved at EPFL
23.06.2017 | Ecole Polytechnique Fédérale de Lausanne

nachricht Quantum thermometer or optical refrigerator?
23.06.2017 | National Institute of Standards and Technology (NIST)

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Quantum thermometer or optical refrigerator?

23.06.2017 | Physics and Astronomy

A 100-year-old physics problem has been solved at EPFL

23.06.2017 | Physics and Astronomy

Equipping form with function

23.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>