Articles syndiqués tirés de ce site

Elegant use of noise for quantum computing

18 mars

Scientists around the world work hard to rinse quantum systems for noise, which may disturb the function of tomorrow’s powerful quantum computers. Researchers from the Niels Bohr Institute (NBI) have found a way to use noise to process quantum information. This raises the performance of the (…)

Searching for the decay of nature’s rarest isotope : Tantalum-180m

18 mars

Tantalum is one of the rarest elements and has multiple stable isotopes. The least abundant tantalum isotope, Ta-180 is found naturally in a long-lived excited state, a feature unique to this isotope. In excited states, a nuclei’s protons or neutrons have higher than normal energy levels.

Holographic message encoded in simple plastic

18 mars

There are many ways to store data—digitally, on a hard disk, or using analog storage technology, for example as a hologram. In most cases, it is technically quite complicated to create a hologram : High-precision laser technology is normally used for this.

Direct laser writing on halide perovskites : From mechanisms to applications

15 mars

Metal halide perovskites have become well-deserved "star" materials among a variety of semiconductors owing to their excellent optoelectronic properties, such as high photoluminescence (PL) quantum yield (QY), high absorption coefficient, tunable bandgaps, long carrier diffusion (…)

Chiral transmission by an open evolution trajectory in a non-Hermitian system

15 mars

In non-Hermitian systems, two or more eigenvalues and eigenstates of a resonant system coalesce at Exceptional points (EPs). Dynamic encircling of EPs has received significant interest in recent years, as it leads to highly nontrivial phenomena, such as chiral transmission, in which the final (…)

Ultra-flat optics for broadband thermal imaging

15 mars

Long-wavelength infrared (LWIR) imaging holds critical significance across many applications, from consumer electronics to defense and national security. It finds applications in night vision, remote sensing, and long-range imaging. However, the conventional refractive lenses employed in these (…)

Researchers develop a new strategy to enhance blue perovskite LED performance

15 mars

Prof. Cui Linsong’s research team from the University of Science and Technology of China (USTC), cooperating with Prof. Samuel D. Stranks’ team from the University of Cambridge, devised a novel strategy to enhance the performance of blue light-emitting diodes (LEDs) based on perovskite (…)

Brighter, cheaper blue light could revolutionize screen technology

15 mars

Researchers have found a new way to simplify the structure of high-efficiency blue organic light-emitting diodes (OLEDs), which could lead to longer-lasting and higher definition television screens.

New excitation method of stimulated Raman scattering achieves natural-linewidth-limit spectral lines

15 mars

Stimulated Raman Scattering (SRS) has been developed as an essential quantitative contrast for chemical imaging in recent years. However, the spectral resolution of the mainstream SRS modalities is always lower than the state-of-the-art spontaneous Raman system.

Researchers prove fundamental limits of electromagnetic energy absorption

14 mars

Electrical engineers at Duke University have determined the theoretical fundamental limit for how much electromagnetic energy a transparent material with a given thickness can absorb. The finding will help engineers optimize devices designed to block certain frequencies of radiation while (…)