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UrduResearchers have discovered how to make a new optical metamaterial that would underpin a variety of new technologies.
Tag: Metamaterials
Whole-infrared-band camouflage with dual-band radiative heat dissipation
Advanced multispectral detection technologies have emerged as a significant threat to objects. To address the challenge, scientists in China proposed a whole-infrared-band camouflage device (covering the NIR, SWIR, MWIR, and LWIR bands), which exhibits remarkable camouflage performance against thermal emission and solar radiance.
Zero-index metamaterials and the future
Zero-index metamaterials (ZIMs) have the potential to revolutionize electromagnetic and microwave applications.
Smart material prototype challenges Newton’s laws of motion
For more than 10 years, Guoliang Huang, the Huber and Helen Croft Chair in Engineering at the University of Missouri, has been investigating the unconventional properties of “metamaterials” — an artificial material that exhibits properties not commonly found in nature as defined by Newton’s laws of motion — in his long-term pursuit of designing an ideal metamaterial.
A new type of photonic time crystal gives light a boost
Smart surfaces mimic elusive photonic time crystals
Through the quantum looking glass
An ultrathin invention could make future computing, sensing and encryption technologies remarkably smaller and more powerful by helping scientists control a strange but useful phenomenon of quantum mechanics, according to new research recently published in the journal Science.
Metamaterial significantly enhances the chiral nanoparticle signals
The left hand looks like the right hand in the mirror but the left-handed glove does not fit on the right hand.
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 propagation and scattering of waves for applications in various areas of wave physics and engineering.
Inkjet Printing “Impossible Materials”
Engineers developed inexpensive methods to make “impossible materials” that interact in unusual ways with microwave energy. Thin film polymers inkjet printed with tiny component patterns collect or transmit energy with much greater selectivity, sensitivity, and power than conventional materials.
Novel liquid crystal metalens offers electric zoom
Researchers from Cornell University’s School of Applied and Engineering Physics and Samsung’s Advanced Institute of Technology have created a first-of-its-kind metalens – a metamaterial lens – that can be focused using voltage instead of mechanically moving its components.
Molybdenum Disulfide Ushers in Era of Post-Silicon Photonics
Researchers of the Center for Photonics and Two-Dimensional Materials at MIPT, together with their colleagues from Spain, Great Britain, Sweden, and Singapore, including co-creator of the world’s first 2D material and Nobel laureate Konstantin Novoselov, have measured giant optical anisotropy in layered molybdenum disulfide crystals for the first time. The scientists suggest that such transition metal dichalcogenide crystals will replace silicon in photonics. Birefringence with a giant difference in refractive indices, characteristic of these substances, will make it possible to develop faster yet tiny optical devices. The work is published in the journal Nature Communications.
Broadband Enhancement Relies on Precise Tilt
If a photon source could be placed on a single chip and made to produce photons at a high rate, this could enable high-speed quantum communication or information processing. In Applied Physics Reviews, a simple on-chip photon source using a hyperbolic metamaterial is proposed, and investigators carried out calculations to show that a prototype arranged in a precise way can overcome problems of low efficiency and allow for high repetition rates for on-chip photon sources.