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!
Move over, lasers: Scientists can now create holograms from neutrons, too
21.10.2016 | National Institute of Standards and Technology (NIST)
Finding the lightest superdeformed triaxial atomic nucleus
20.10.2016 | The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
Now, Hiroshi Funakubo and co-workers at the Tokyo Institute of Technology, in collaboration with researchers across Japan, have conducted experiments to...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
24.10.2016 | Power and Electrical Engineering
24.10.2016 | Life Sciences
24.10.2016 | Life Sciences