Nanowerk October 8, 2019 Researchers in Spain evaluated different strategies that enable the obtention of electric charge accumulators from the electrochemical reduction of graphene oxide on the surface of the activated carbon (reduced graphene oxide – RGO) and the subsequent electrosynthesis of polyaniline (Pani). They are supercondensers placed on active carbon tissues that stand out due to their electric properties and high level of power. The devices they have designed and tested make use of all the potential of active carbon, graphene and polyaniline, a polymer with high capabilities that is already broadly used in textile materials. The supercondensers could […]
Physicists break distance record for electron spin-state transmission in spin qubits
Physics World October 10, 2019 A team of researchers in the US (University of Rochester, Purdue University) has demonstrated coherent spin-state transfer along an array of four electrons confined in a quadruple quantum dot in a GaAs/AlGaAs heterostructure. When they applied a voltage pulse to a gate between two quantum dots, the electrons in the dots exchanged their spin states via Heisenberg exchange coupling. By applying a series of voltage pulses to specific gates, the researchers were able to shuttle the spin states of the electrons back and forth. They were able to transmit the spins of entangled electrons using […]
Physicists couple key components of quantum technologies
EurekAlert October 9, 2019 Researchers in Germany developed an interface that couples light sources for single photons with nanophotonic networks. They considered quantum emitters which are embedded in nanodiamonds and emit photons when they are stimulated by means of electromagnetic fields. In order to produce the desired interfaces, they aimed to develop optical structures tailored to the wavelength of the quantum emitters. In structuring the crystals, they varied not only the size and the arrangement of the cavities, but also the width of the waveguide on which the cavities were placed. They found photonic crystals which demonstrated a special variation […]
Predicting terror activity before it happens
Science Daily October 7, 2019 Researchers at Northwestern University developed an early-warning model that predicts the future lethality of a group using only a handful of events that occur soon after it emerges. Using the first 10 to 20 attacks or the first 10 to 20% of a group’s lifetime, the model provides about 60% of the explanatory power as would having a group’s complete lifetime data. They considered terror organizations like a business whose product is lethality and predict their success in producing that product based on the diversity of weapons, their sophistication and attack capabilities. Using publicly available […]
Tunable optical chip paves way for new quantum devices
Nanowerk October 2, 2019 Building on previous development of a platform called crystalline SiC-on-insulator researchers at Georgia Institute of Technology fabricated microring resonators, using the crystalline SiC-on-insulator technology. In each resonator, light at resonance wavelengths, traveling around the ring will build up strength through constructive interference. The resonator can be used to control the amplitude and phase of the light in a waveguide coupled to it. To create a tunable resonator with a high degree of control, they fabricated electric heaters on top of the microrings. When an electric current is applied to the integrated microheater, it locally increases the […]
Using machine learning to hunt down cybercriminals
MIT News October 8, 2019 Border Gateway Protocol (BGP allows different parts of the internet to talk to each other) hijacks remain an acute problem in today’s Internet with widespread consequences. To predict these incidents in advance by tracing things back to the hijackers a team of scientists in the US (MIT, UC San Diego) developed and trained a machine learning model to automatically identify Autonomous Systems (ASes) that exhibit characteristics like serial hijackers. The classifier identifies ≈ 900 ASes with similar behavior in the global IPv4 routing table. They analyze and categorize these networks, finding a wide range of […]
Top 10 Science and Technology Inventions for the Week of October 4, 2019
01. This flat structure morphs into shape of a human face when temperature changes 02. New liquid crystals allowing directed transmission of electricity synthesized 03. Researchers synthesize ‘impossible’ superconductor 04. Creating different kinds of light with manipulable quantum properties 05. This New Chip Could Bridge The Gap Between Classical And Quantum Computing 06. Jumping the gap may make electronics faster 07. Preventing manipulation in automated face recognition 08. New chip poised to enable hand-held microwave imaging 09. Solar cells with new interfaces 10. Clever materials make it easier to pull clean water from the air And others… AI Faces Speed […]
AI Faces Speed Bumps and Potholes on Its Road From the Research Lab to Everyday Use
IEEE Spectrum October 1, 2019 According to panelists wrapping up a day of discussions at the IEEE AI Symposium 2019, implementing machine learning in the real world isn’t easy. The tools are available and the road is well-marked—but the speed bumps are many. As the field is changing rapidly – there are new language models coming out every month, and new tools and the foundational elements are shifting so rapidly there aren’t any true experts at this point. And then there is the decision of where exactly machine learning should happen—on site, or in the cloud? Data scientists are building […]
Air Force unveils 10-year cyber warfare plan
Defense Systems September 22, 2019 The Air Force released an overview of its 10-year Cyber Warfare Flight Plan which attempts to fuse all the best parts of electronic, cyber, and information operations. The unclassified strategy overview highlights building up talent and fielding agile, scalable, modular cyber warfare training as the foundational component. The plan indicates developing increasing offensive and defensive cyber operations capabilities, enterprise HF architecture to modernize warfighter needs, Air Force global communications, data strategy, open architecture infrastructure and platforms to improve data flow and analysis…read more.
Can we peek at Schrodinger’s cat without disturbing it?
Science Daily October 2, 2019 According to an international team of researchers (Japan, India) a camera set up outside a box that has Schrödinger’s cat takes a photo of the cat, and the scientists don’t know whether it is dead or alive. The flash from the camera has removed a “quantum tag” marking the superposition of the cat. The photo is now entangled with the fate of the cat i.e. we can decide what happened to the cat by processing this photo in a certain way. The researchers propose that depending on what method is used to process the photo, […]