All-optical terahertz modulation, an ultrafast dynamical terahertz control approach that has attracted much interest, remains limited in terms of encoding and multifunction.
Independent controls of various properties of electromagnetic (EM) waves are crucially required in a wide range of applications. Towards this goal, scientists in China proposed the concept and general theory of space-time-polarization-coding (STPC) metasurface, which adds the functionality of arbitrarily controlling polarization direction compared to space-time-coding (STC) metasurfaces. The proposed approach has a wide range of applications in various areas, such as imaging, data storage, and wireless communication.
Electronics and Communications Research Institute (ETRI) announced on July 1 that they have decided to establish a cooperative system with the International Institute for Applied Systems Analysis (IIASA) to conduct further research regarding the development of an AI policy intelligence system that can assist public policy decision-making.
Chip-scale THz devices could enable future compact computing, imaging, and communication techniques, where the all-optical tunability via Kerr effect remains a bottleneck for THz waves.
A long-wave, high-power, wide-tunable, single-longitudinal-mode solid-state laser was designed as light source in photoacoustic gas detection technology. The laser emits at ~2 μm with an excellent wavelength and power stability.
This study suggests single-pixel detection as a cost-effective alternative to expensive InGaAs focal plane arrays (FPAs) for near infrared (NIR) hyperspectral imaging.
Colloidal quantum dots (CQD) are of interest for optoelectronic devices because of the wide energy gap tunability from ultraviolet to infrared wavelengths.
For the practical application of 2D semiconductors, it is crucial to construct high-quality p-n junctions. Scientist in China developed a low-energy ion implantation system for constructing 2D lateral p-n homojunction. The conductivity type of WS2 was successfully realized to transform from n-type conduction to p-type conduction, and the universality of this method was demonstrated.
Joshua New, a computer scientist and distinguished R&D staff member at Oak Ridge National Laboratory, was named the 2024 Researcher of the Year by R&D World magazine as part of its R&D 100 Professional Award winners.
An electro-optic duplex memristor on a GaN/AlScN hetero-structure based Schottky diode has been realized. This two-terminal memristor shows good electrical and opto-electrical nonvolatility and reconfigurability.
In 1948, Dennis Gabor proposed the concept of holography. After 75 years of development, holographic imaging has become a powerful tool for optical wavefront measurement, which has given fresh energy to physics, biology, and materials science. Scientists in China regard the process of holographic recording and reconstruction as a transformation between complex-domain and real-domain, and discuss the mathematics and physical principles of reconstruction. The multidisciplinary nature brings it to label-free biology, wavefront sensing, and semiconductor production.
Korean researchers announced that Korea’s Code Division Multiple Access (CDMA) commercialization technology, which was the world’s first successfully commercialized CDMA technology in 1996, has been listed on the ‘Milestones Program,’ a world-renowned program hosted by the Institute of Electrical and Electronic Engineers (IEEE).
Open Source with SLU (OSS), a pioneering software engineering lab at Saint Louis University, has received a $654,610 grant from the Alfred P. Sloan Foundation to continue advancing open scholarship and developing open-source software
The Wake Forest Institute for Regenerative Medicine (WFIRM) proudly announces the appointment of Tim Bertram, PhD, as its new Chief Ecosystem Officer. He will serve as the Chief Executive Officer (CEO) of the U.S. National Science Foundation (NSF) multi-million-dollar long-term investment in commercializing advanced regenerative medical technologies from leading North Carolina academic institutions. With an illustrious career marked by innovation and leadership, Bertram brings decades of transformative experience from his tenure at ProKidney, a leading chronic kidney disease therapy company he founded focused on preserving kidney function and controlling kidney failure.
Zhili Feng, a distinguished R&D staff member, and Jian Chen, a senior R&D staff member, in Materials Science and Technology Division at the Department of Energy’s Oak Ridge National Laboratory, will receive the Elmer L. Hann Award at the Society of Naval Architects and Maritime Engineers, or SNAME, Convention on Oct.
Metasurfaces, ultra-thin films of nanostructures, hold immense promise for manipulating light with unprecedented control. However, their full potential hinges on overcoming the challenge of crafting these intricate patterns at large scales and high resolutions. This review explores the current nanofabrication techniques, including maskless and masked lithography, exploring their strengths and limitations. By understanding these constraints, we can pave the way for advanced nanophotonic applications powered by these light-bending marvels.
University of Illinois Urbana-Champaign researchers report a unique strategy for controlling molecular conductance by using molecules with rigid backbones—such as ladder-type molecules, known as being shape-persistent.
Scientists have developed an advanced label-free photothermal microscopy system using microtoroid whispering gallery mode resonators which enables the detection of single nanoparticles as small as 5 nm quantum dots with unprecedented sensitivity. This breakthrough, which achieves a heat dissipation detection limit of 0.75 pW, offers detailed 2D photothermal imaging and holds promise for applications in nanotechnology, biomedical research, and other scientific fields, paving the way for advancements in nanoscale imaging and characterization.
Scientists created a new ultra-thin source of entangled photons, a key component for future quantum technologies. This new source uses a special material called rhombohedral tungsten disulfide, which offers high quality and efficiency. It could pave the way for miniaturized devices in quantum information processing.
Korean researchers have successfully developed an integrated ultra-high-speed compander system, which combines a compressor and an expander, utilizing advanced design technology.
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