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General Physics Sep 13, 2021

Using acoustics to conceal and simulate objects

When listening to music, we don't just hear the notes produced by the instruments, we are also immersed in its echoes from our surroundings. Sound waves bounce back off the walls and objects around us, forming a characteristic ...

Nanophysics Sep 13, 2021

First observation of high-harmonic generation in robust, refractory metals

The generation of high harmonics from metals opens a link between solid and plasma harmonics. High-harmonic generation (HHG) is the field of creating high-frequency photons from low-frequency lasers. HHG is the cornerstone ...

Optics & Photonics Sep 7, 2021

Photoluminescence control by hyperbolic metamaterials and metasurfaces

In a new publication from Opto-Electronic Advances, researchers led by Professor Andrei V. Lavrinenko and Dr. Pavel N. Melentiev from the DTU Fotonik-Department of Photonics Engineering, Technical University of Denmark, Lyngby, ...

General Physics Aug 18, 2021

'Shadow waveguide' casts complex acoustic patterns to control particles

Engineers at Duke University have devised a new approach to using sound waves to manipulate tiny particles suspended in liquid in complex ways. Dubbed a "shadow waveguide," the technique uses only two sound sources to create ...

Materials Science Aug 17, 2021

Using bioinspired microvasculature to control material properties

Researchers have created and demonstrated a new vascular metamaterial that can be reconfigured to modify its thermal and electromagnetic properties.

Optics & Photonics Aug 13, 2021

Electrically-tunable metasurfaces using dual epsilon-near-zero resonances

In a new publication from Opto-Electronic Advances, Researchers led by Professor Jinghua Teng from Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Singapore consider ...

Mathematics Aug 13, 2021

New algorithm can help improve cellular materials design

New research published in Scientific Reports has revealed that a simple but robust algorithm can help engineers to improve the design of cellular materials that are used in a variety of diverse applications ranging from defense, ...

Optics & Photonics Aug 10, 2021

Metamaterials research challenges fundamental limits in photonics

Cornell researchers are proposing a new way to modulate both the absorptive and the refractive qualities of metamaterials in real time, and their findings open intriguing new opportunities to control, in time and space, the ...

Nanomaterials Aug 9, 2021

Researchers design three-dimensional kirigami building blocks to make dynamic metamaterials

A new approach to producing metamaterials draws on kirigami techniques to make three-dimensional, reconfigurable building blocks that can be used to create complex, dynamic structures. Because the design approach is modular, ...

Optics & Photonics Jul 28, 2021

Machine-learning method to find optimal solutions in extremely large design spaces

Electrical engineers at Duke University have devised a new method for solving difficult design problems with many potential solutions in a large design space using machine learning. Dubbed the "neural-adjoint method," the ...

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