Phys.org May 29, 2019 Chaotic optical secure communications (COSC) are a kind of fast-speed hardware encryption technique at the physical layer. Researchers in China have developed a scheme of long-haul COSC, where the bit rate reaches 1.25 Gbits/s and the transmission distance up to 143 km. The low-cost device is built with off-the-shelf optical components and does not require dispersion compensating fibre (DCF) or forward-error correction. The results show that high-quality chaotic synchronisation can be maintained both in time- and frequency-domain, even after 143 km transmission; the bandwidth of the transmitter is enlarged by the external optical injection, which leads […]
Tag Archives: S&T China
China Publishes Research on Competitive 3-Nanometer Chip
Next Big Future May 29, 2019 Researchers in China have fabricated high-performance negative capacitance p-type FinFETs (p-FinFETs) with a 3-nm-thick ferroelectric (FE) hafnium zirconium oxides layer based on a conventional high-κ metal gate FinFETs fabrication flow. The devices show improved subthreshold swing values and slight hysteresis voltages with the integrated FE film and a strong driving current enhancement (up to 260%) is also obtained compared with that of conventional FinFETs. The inherent reasons for the improved characteristics contribute to the low-interface state density and perfect channel electrostatic integrity. Samsung, Intel and Taiwan Semiconductor will be commercially producing 3-nanometer chips in […]
Underwater power generation
Science Daily May 13, 2019 Inspired by marine organisms that have switchable energy extraction modes (aerobic respiration for long‐term living or anaerobic respiration to propose instantaneously high output power for fast movement),researchers in China have designed an auto‐switchable dual‐mode seawater energy extraction system to provide high energy density and power density both by initiatively choosing different solutes in seawater as electron acceptors. The key to the discovery is a cathode made of Prussian blue, an open framework structure with cyanide ions as “struts” and iron ions as “nodes,” which can easily accept and release electrons. When combined with a metal […]
What you may not understand about China’s AI scene
MIT Technology Review April , 2019 Most Chinese researchers can read English, and nearly all major research developments in the Western world are immediately translated into Chinese, but the reverse is not true. Therefore, the Chinese research community has a much deeper understanding than the English-speaking one of what’s happening on both sides of the aisle. As China’s AI industry continues to grow, this could prove a major disadvantage for people in the West. Westerners have a hyped-up view of China’s AI capabilities. Westerners also lack a genuine understanding of the technical skills and capacity of Chinese companies. A few […]
Efficiency boost for robot submarines
Phys.org March 8, 2019 Control algorithms for AUVs are not necessarily optimized for distance nor energy consumption. Researchers in China have designed an improved energy-aware and self-adaptive deployment method for a group of AUVs taking on collaborative tasks. Taking into account the movement priority of AUVs and the initial deployment scheme a self-adaptive deployment strategy is presented for redeploying the AUVs when the available energy of some AUVs has fallen below a certain threshold. Simulation results showed that the method decreases energy consumption by about 30%. than its traditional counterpart and it can redeploy AUVs adaptively and rapidly…read more. TECHNICAL […]
China’s Huawei has big ambitions to weaken the US grip on AI leadership
MIT Technology Review March 4, 2019 Huawei plans to increase its investments in AI and integrate it throughout the company to “build a full-stack AI portfolio.” Officials from the company said last year that it planned to more than double annual R&D spending to between $15 billion and $20 billion. This could catapult the company to between fifth and second place in worldwide spending on R&D. According to its website, some 80,000 employees, or 45% of Huawei’s workforce, are involved in R&D. But Huawei is struggling to convince the Western world that it can be trusted. The company faces accusations […]
Toward Nanoparticle “Night-Vision Goggles”
Optics and Photonics March 1, 2019 Researchers in China developed ocular injectable photoreceptor-binding upconversion nanoparticles (pbUCNPs). These nanoparticles anchored on retinal photoreceptors serve as miniature NIR light transducers to create NIR light image vision with negligible side effects. In tests they demonstrated that mice with these nanoantennae could not only perceive NIR light, but also see NIR light patterns. According to the researchers the research could be a potential alternative to night-vision goggles, the treatment could help repair certain vision problems and eye diseases…read more. Open Access TECHNICAL ARTICLE
Multitasking graphene ink printed into tiny flexible supercapacitors
Nanowerk January 23, 2019 Researchers in China developed an ink combining graphene and carbon black, both of which are conductive, with a polymer binder in a solvent. As it is applied, the force causes it to lose its viscosity, so it flows easily, but as soon as the force is removed, it thickens and keeps its shape. The ink can act as the microelectrodes, metal-free current collectors and interconnects, simultaneously. They applied the graphene ink to a substrate, such as glass or flexible PET plastic, using a patterned screen as a stencil. The resulting pattern includes all the conductive parts […]
China Has Radio Antenna to Talk to Submarines and It Covers Five Times Area of NY City
Next Big Future January 1, 2019 Project WEM’s (Wireless Electromagnetic Method) main surface structure is a pair of high voltage power supply lines stretching from north to south, east to west on steel lattice towers, which form a cross that is 60km (37 miles) wide and 80km to 100km (50 to 62 miles) long. At the end of each power line, thick copper wire goes underground through a deep borehole. Two power stations generate strong currents and electrify the ground in slow, repeating pulses, turning the earth underfoot into an active source of electromagnetic radiation. The radio pulses not only […]
China is racing ahead in 5G. Here’s what that means.
MIT Technology Review December 18, 2018 In its 13th Five-Year Plan the government describes 5G as a “strategic emerging industry” and “new area of growth,” and in its Made in China 2025 plan, which outlines its goal of becoming a global manufacturing leader, it vows to “make breakthroughs in fifth-generation mobile communication. To make this happen the Chinese government is committed to giving Chinese operators large chunks of spectrum for 5G. Unlike in the US, Chinese carriers will mostly use a spectrum band similar to what they used for 3G and 4G. Under government direction, Chinese companies began conducting research […]