Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog – Page 5313

System represents a breakthrough in the real-life applicability of biophotovotaic devices.

Microprocessors can be powered using photosynthetic microorganisms in ambient light without the need for an external power source, new research shows. Led by Emre Ozer from Arm and Christopher Howe from the University of Cambridge, researchers in the UK, Italy and Norway introduced cyanobacteria Synechocystis sp. PCC6803 into an aluminium–air battery to create a biophotovoltaic device. The device is a similar size to an AA battery, is made from durable and mainly recyclable materials and does not require a dedicated light source to function. It is the first reported bioelectrochemical system capable of continuously powering a microprocessor outside of laboratory-controlled conditions.

‘We decided that we didn’t want to operate the system with a dedicated source of energy. We needed to prove that we can operate under ambient light, and we were able to do it,’ comments Paolo Bombelli, one of the lead researchers from the University of Cambridge.

The team tested the stability and biocompatibility of the aluminium substrate, and demonstrated that the system could continuously power an Arm Cortex-M0+ processor for six months under varied ambient conditions, within a temperature range of 13.8–30.7°C. The processor performed 1.23 × 1011 cycles of 45 minutes of computation followed by a 15-minute standby period. Supplied entirely by the biophotovoltaic cell, the processor drew an average current of 1.4μA with a voltage of 0.72V. The system only failed when an ice pack was used to lower the temperature to 5°C.

Continue reading “Photosynthesis used to power a microprocessor for over six months” | >

Over the past decades, electronics engineers and material scientists worldwide have been investigating the potential of various materials for fabricating transistors, devices that amplify or switch electrical signals in electronic devices. Two-dimensional (2D) semiconductors have been known to be particularly promising materials for fabricating the new electronic devices.

Despite their advantages, the use of these materials in electronics greatly depends on their integration with high-quality dielectrics, insulating materials or materials that are poor conductors of electrical current. These materials, however, can be difficult to deposit on 2D substrates.

Researchers at Nanyang Technological University, Peking University, Tsinghua University, and the Beijing Academy of Quantum Information Sciences have recently demonstrated the successful integration of single-crystal strontium titrate, a high-κ perovskite , with 2D semiconductors, using van der Waals forces. Their paper, published in Nature Electronics, could open new possibilities for the development of new types of transistors and electronic components.

Read more | >

For a human, one of the first signs someone is getting old is the inability to remember little things; maybe they misplace their keys, or get lost on an oft-taken route. For a laboratory mouse, it’s forgetting that when bright lights and a high-pitched buzz flood your cage, an electric zap to the foot quickly follows.

But researchers at Stanford University discovered that if you transfuse cerebrospinal fluid from a young mouse into an old one, it will recover its former powers of recall and freeze in anticipation. They also identified a protein in that cerebrospinal fluid, or CSF, that penetrates into the hippocampus, where it drives improvements in memory.

The tantalizing breakthrough, published Wednesday in Nature, suggests that youthful factors circulating in the CSF, or drugs that target the same pathways, might be tapped to slow the cognitive declines of old age. Perhaps even more importantly, it shows for the first time the potential of CSF as a vehicle to get therapeutics for neurological diseases into the hard-to-reach fissures of the human brain.

Read more | >

Costa Rica has declared a state of emergency after ransomware hackers crippled computer networks across multiple government agencies, including the Finance Ministry.

The official declaration, published on a government website Wednesday, said that the attack was “unprecedented in the country” and that it interrupted the country’s tax collection and exposed citizens’ personal information.

The hackers initially broke into the Finance Ministry on April 12, it said. They were able to spread to other agencies, including the Ministry of Science, Technology and Telecommunications and the National Meteorological Institute.

Read more | >

The first 1,000 people to use the link or my code ainews will get a 1 month free trial of Skillshare: https://skl.sh/ainews05221
Has human level AI been reached in 2022? What are the best Artificial Intelligences released by the biggest AI companies so far? All of this in the top 5 best AI’s in 2022.
–
TIMESTAMPS:
00:00 Intro.
00:19 #5 GPT-3
03:10 #4 Gopher.
04:40 #3 Codex.
06:01 #2 DALL-E 2
07:33 #1 Flamingo.
–
#ai #top5 #futurism

Read more | >

Some materials, like wood, are insulators that block the flow of electricity. Conductors, such as copper, allow for electricity to flow through them. Other materials—semiconductors—can be either/or depending on conditions such as applied electric field or temperature. Unlike wood or copper or silicon, though, topological insulators (TIs) are an exotic state of matter that is conductive on the surface, but not in the bulk. Such unique material properties have great scientific implications and could be of use in a range of technologies, including wireless communications, radar and quantum information processing.

Through a , the research labs of Aravind Nagulu, assistant professor in the Preston M. Green Department of Electrical & Systems Engineering at Washington University in St. Louis, and colleagues from Columbia University and the City University of New York’s Advanced Science Research Center have demonstrated the first implementation of an electromagnetic topological insulator on an integrated chip.

The collaborative project’s findings were published May 2 in the journal Nature Electronics.

Read more | >