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Category: nanotechnology – Page 34

Niccolo Zanichelli | The State of Brain Emulation in 2025 @ Vision Weekend 2025, Puerto Rico

*This video was recorded at Foresight’s Vision Weekend 2025 in Puerto Rico*
https://foresight.org/vw2025pr/

Our Vision Weekends are the annual festivals of Foresight Institute. Held in two countries, over two weekends, you are invited to burst your tech silos and plan for flourishing long-term futures. This playlist captures the magic of our Puerto Rico edition, held February 21–23, 2025, in the heart of Old San Juan. Come for the ideas: join the conference, unconference, mentorship hours, curated 1-1s, tech demos, biohacking sessions, prize awards, and much more. Stay for fun with new friends: join the satellite gatherings, solarpunk future salsa night, beach picnic, and surprise island adventures. This year’s main conference track is dedicated to “Paths to Progress”; meaning you will hear 20+ invited presentations from Foresight’s core community highlighting paths to progress in the following areas: Existential Hope Futures, Longevity, Rejuvenation, Cryonics, Neurotech, BCIs & WBEs, Cryptography, Security & AI, Fusion, Energy, Space, and Funding, Innovation, Progress.
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*About The Foresight Institute*

The Foresight Institute is a research organization and non-profit that supports the beneficial development of high-impact technologies. Since our founding in 1986 on a vision of guiding powerful technologies, we have continued to evolve into a many-armed organization that focuses on several fields of science and technology that are too ambitious for legacy institutions to support. From molecular nanotechnology, to brain-computer interfaces, space exploration, cryptocommerce, and AI, Foresight gathers leading minds to advance research and accelerate progress toward flourishing futures.

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MRI warning as study says injection could cause deadly material to form in body

A chemical injected before MRI scans to help create sharper images may cause some patients to experience a potentially deadly complication in rare cases, a new study suggests.

Researchers from the University of New Mexico found that gadolinium – a toxic rare earth metal used in MRI scans – could mix with oxalic acid found in many foods to precipitate tiny nanoparticles of the metal in human tissues.

The research, published in the journal Magnetic Resonance Imaging, assessed the formation of these nanoparticles associated with potentially deadly health problems in the kidneys and other organs.

DNA Circuits Come Alive: Scientists Build Molecular Robots Inside Living Cells

Since most cells naturally repel DNA, delivering these nanodevices into cells requires specialized techniques, such as transfection methods and transformation protocols. Once inside, cellular factors such as salt concentration, molecular crowding, and heterogeneous environments influence strand displacement reactions. To overcome the limitations of direct delivery, researchers are also developing transcribable RNA nanodevices encoded into plasmids or chromosomes, allowing cells to express these circuits.

Toward Smart DNA Machines and Biocomputers

DNA strand displacement has been applied to the innovation of computational models. By integrating computational principles with DNA strand displacement, the structured algorithms of traditional computing can be combined with random biochemical processes and chemical reactions in biological systems, enabling biocompatible models of computation. In the future, DNA strand displacement may enable autonomously acting DNA nanomachines to precisely manipulate biological processes, leading to quantum leaps in healthcare and life science research.

Electron transport in bilayer graphene nanoconstrictions patterned using atomic force microscope nanolithography

Here we report on low temperature transport measurements of encapsulated bilayer graphene nano constrictions fabricated employing electrode-free AFM-based local anodic oxidation (LAO) nanolithography. This technique allows for the creation of constrictions as narrow as 20 nm. While larger constrictions exhibit an enhanced energy gap, single quantum dot (QD) formation is observed within smaller constrictions with addition energies exceeding 100 meV, which surpass previous experiments on patterned QDs. These results suggest that transport through these narrow constrictions is governed by edge disorder combined with quantum confinement effects. Our findings introduce electrode-free AFM-LAO lithography as an easy and flexible method for creating nanostructures with tunable electronic properties without relying on patterning techniques such as e-beam lithography. The excellent control and reproducibility provided by this technique opens exciting opportunities for carbon-based quantum electronics and spintronics.

Citation.

Physical Review B

Researchers develop full-color-emitting upconversion nanoparticle technology for ultra-high RGB display quality

Dr. Ho Seong Jang and colleagues at the Extreme Materials Research Center at the Korea Institute of Science and Technology (KIST) have developed an upconversion nanoparticle technology that introduces a core@multi-shell nanostructure, a multilayer structure in which multiple layers of shells surround a central core particle, and enables high color purity RGB light emission from a single nanoparticle by adjusting the infrared wavelength.

The work is published in the journal Advanced Functional Materials.

Luminescent materials are materials that light up on their own and are used in a variety of devices, including TVs, tablets, monitors, and smartphones, to allow us to view a variety of images and videos. However, conventional two-dimensional flat displays cannot fully convey the three-dimensional dimensionality of the real world, limiting the sense of depth.

Pt nano-catalyst with graphene pockets enhances fuel cell durability and efficiency

The manufacturing and deployment of hybrid and electric vehicles is on the rise, contributing to ongoing efforts to decarbonize the transport industry. While cars and smaller vehicles can be powered using lithium batteries, electrifying heavy-duty vehicles, such as trucks and large buses, has so far proved much more challenging.

Fuel , devices that generate electricity via , are promising solutions for powering heavy-duty vehicles. Most of the fuel cells employed so far are so-called proton exchange membrane fuel cells (PEMFCs), cells that generate electricity via the reaction of hydrogen and oxygen, conducting protons from their anode to their cathode utilizing a solid polymer membrane.

Despite their potential, many existing fuel cells have limited lifetimes and efficiencies. These limitations have so far hindered their widespread adoption in the manufacturing of electric or hybrid trucks, buses and other heavy-truck vehicles.

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