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Archive for the ‘biotech/medical’ category: Page 52

Oct 12, 2024

New breakthrough helps free up space for robots to ‘think’, say scientists

Posted by in categories: biotech/medical, robotics/AI

Engineers have worked out how to give robots complex instructions without electricity for the first time which could free up more space in the robotic ‘brain’ for them to ‘think’

Mimicking how some parts of the human body work, researchers from King’s College London have transmitted a series of…

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Oct 12, 2024

Human Immortality | Life Extension | YouTube Documentary

Posted by in categories: biotech/medical, education, life extension

Human Immortality — If you thought Human Immortality was just a concept in science fiction, this episode reveals how it will become science fact. For some scientists featured in this program, achieving Immortality is not a question of ‘If’. The real question is ‘When?’

Human Immortality (2022)
Director: Emma Watts.
Writers: Kyle McCabe, Christopher Webb Young.
Stars: Samantha Brady, Aubrey DeGrey, Leonard Guarente.
Genre: Documentary.
Country: United States.
Language: English.
Release Date: August 31, 2022 (United States)

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Oct 12, 2024

HDL Cholesterol Quality, Not Quantity, Linked to Alzheimer’s Risk

Posted by in categories: biotech/medical, neuroscience

Source: University of Pittsburgh.

Higher levels of HDL-C—known as the “good cholesterol”—have been shown to correlate with heightened risk for Alzheimer’s disease.

A new study published in the Journal of Clinical Endocrinology & Metabolism might explain why.

Oct 12, 2024

Controlled Graphene Crumpling Used as Artificial Muscle Actuators

Posted by in categories: biotech/medical, cyborgs

Duke University engineers are layering atom-thick lattices of carbon with polymers to create unique materials with a broad range of applications, including artificial muscles.

The lattice, known as graphene, is made of pure carbon and appears under magnification like chicken wire. Because of its unique optical, electrical, and mechanical properties, graphene is used in electronics, energy storage, composite materials, and biomedicine.

Oct 12, 2024

New Nanotechnology AIDS in Electron Cooling Without External Sources

Posted by in categories: biotech/medical, nanotechnology, quantum physics

Using a nanoscale structure that consisted of a sequential array of a source electrode, a quantum well, a tunneling barrier, a quantum dot, another tunneling barrier, and a drain electrode, researchers were able to suppress electron excitation and cool electrons to −228 °C (−378 °F) without external means at room temperature.

A team of researchers has discovered a way to cool electrons to −228 °C without external means and at room temperature, an advancement that could enable electronic devices to function with very little energy.

The process involves passing electrons through a quantum well to cool them and keep them from heating.

Oct 12, 2024

Nanotechnology Dramatically Improves Electronic Device Performance

Posted by in categories: biotech/medical, computing, mobile phones, nanotechnology

A new study from researchers at Tyndall National Institute and the National University of Singapore shows that subtle changes in the intermolecular van der Waals interactions in the active component of a molecular diode can improve the device performance by more than a factor of ten.

A team of scientists from Tyndall National Institute at University College Cork and the National University of Singapore have designed and fabricated ultra-small devices for energy-efficient electronics. By finding out how molecules behave in these devices, a ten-fold increase in switching efficiency was obtained by changing just one carbon atom. These devices could provide new ways to combat overheating in mobile phones and laptops, and could also aid in electrical stimulation of tissue repair for wound healing. The breakthrough creation of molecular devices with highly controllable electrical properties will appear in the February issue of Nature Nanotechnology. Dr. Damien Thompson at the Tyndall National Institute, UCC and a team of researchers at the National University of Singapore led by Prof. Chris Nijhuis designed and created the devices, which are based on molecules acting as electrical valves, or diode rectifiers.

Dr. Thompson explains “These molecules are very useful because they allow current to flow through them when switched ON and block current flow when switched OFF. The results of the study show that simply adding one extra carbon is sufficient to improve the device performance by more than a factor of ten. We are following up lots of new ideas based on these results, and we hope ultimately to create a range of new components for electronic devices.” Dr. Thompson’s atom-level computer simulations showed how molecules with an odd number of carbon atoms stand straighter than molecules with an even number of carbon atoms. This allows them to pack together more closely. Tightly-packed assemblies of these molecules were formed on metal electrode surfaces by the Nijhuis group in Singapore and were found to be remarkably free of defects. These high quality devices can suppress leakage currents and so operate efficiently and reliably.

Oct 12, 2024

Incredible New Technique Measures Forces As Small as a Virus With Unprecedented Precision

Posted by in categories: biotech/medical, nanotechnology

A collaborative research team has developed a novel method to measure minuscule nanoscale forces in liquids, using a technique that significantly enhances measurement sensitivity and resolution. This breakthrough could transform biological research and advance biomedical technology.

Groundbreaking research has introduced a new method for measuring extremely small forces at the nanoscale within aqueous environments, expanding our understanding of the microscopic realm.

The significant nanotechnology advance was achieved by researchers from Beihang University in China with RMIT University and other leading institutions including the Australian National University and University of Technology Sydney.

Oct 12, 2024

Regenerative Electronic Biosensors

Posted by in categories: biotech/medical, innovation

In a newly published study, scientists detail the development of electronic biosensors that can be regenerated and reused repeatedly.

Imagine a swarm of tiny devices only a few hundred nanometers in size that can detect trace amounts of toxins in a water supply or the very earliest signs of cancer in the blood. Now imagine that these tiny sensors can reset themselves, allowing for repeated use over time inside a body of water – or a human body.

Improving nanodevice biosensors is the goal of Mark Reed, Harold Hodgkinson Professor of Electrical Engineering at the Yale School of Engineering & Applied Science. Reed and his colleagues have reported a recent breakthrough in designing electronic biosensors that can be regenerated and reused repeatedly.

Oct 12, 2024

The Next Frontier: DNA Emerges as a Powerhouse for Data Storage and Computing

Posted by in categories: biotech/medical, computing, security

Researchers from NC State and Johns Hopkins have developed a breakthrough technology that leverages DNA for data storage and computing, offering capabilities such as storing, retrieving, computing, and rewriting data.

This technology is made viable by innovative polymer structures called dendricolloids, enhancing data density and preservation. It enables functions similar to electronic devices and could potentially secure data for millennia, providing a promising foundation for the future of molecular computing.

DNA Data Storage and Computing.

Oct 12, 2024

‘Phenomenal’ tool sequences DNA and tracks proteins — without cracking cells open

Posted by in categories: biotech/medical, life extension

Researchers are queuing up to try a powerful microscopy technique that can simultaneously sequence an individual cell’s DNA and pinpoint the location of its proteins with high resolution — all without having to crack the cell open and extract its contents. Imaging DNA and proteins inside intact cells provides crucial information about how these molecules work together.

The method’s developers have already used it to study how ageing might alter the way that proteins in the nucleus interact with chromosomes. As the body ages, they found, changes in these nuclear proteins could suppress gene activity.

“This paper is really extraordinary,” says Ankur Sharma, a cancer biologist at the Garvan Institute of Medical Research in Sydney, Australia, who was not involved in the study but is keen to use the approach to study cancer cells and described it as “phenomenal” on the social-media platform, X.

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