An international team of scientist from the United States, the United Kingdom and Taiwan has developed the world’s smallest memristor. Their results appear in the journal Nature Nanotechnology.
In the new work, the researchers reduced the size even further, shrinking the cross section area down to just a single square nanometer.
What if with the new wave of technologies, such as nanotechnology which would enable us to reprogram matter at a molecular level, we can overcome scarcity once and for all? Design would then become the most important part from start to end product which can be freely shared or have a premium in the marketplace. At any rate, this will dismantle the current social, economic, and political system, because it will become irrelevant; every institution, every value system, every aspect of our lives have been governed by scarcity: the problem of distributing a finite amount of “stuff.” There will be no need for any of today’s social institutions. In other words, when nanotech and ultra-realistic VR are commonplace, the system built on scarcity will crumble and that would herald the forthcoming “economic singularity.” #EconomicSiingularity
The current faltering economic model is suboptimal, hinders economic growth, and is not sustainable going forward.
When light falls on a material, such as a green leaf or the retina, certain molecules transport energy and charge. This ultimately leads to the separation of charges and the generation of electricity. Molecular funnels, so-called conical intersections, ensure that this transport is highly efficient and directed.
An international team of physicists has now observed that such conical intersections also ensure a directed energy transport between neighboring molecules of a nanomaterial. Theoretical simulations have confirmed the experimental results. Until now, scientists had observed this phenomenon only within one molecule. In the long term, the results could help to develop more efficient nanomaterials for organic solar cells, for example. The study, led by Antonietta De Sio, University of Oldenburg, and Thomas Frauenheim, University of Bremen, Germany, was published in the current issue of the scientific journal Nature Nanotechnology.
Photochemical processes play a major role in nature and in technology: When molecules absorb light, their electrons transit to an excited state. This transition triggers extremely fast molecular switching processes. In the human eye, for example, the molecule rhodopsin rotates in a certain way after absorbing light and thus ultimately triggers an electrical signal—the most elementary step in the visual process.
In 10 years, tiny nanobots in your blood might help keep you from getting sick or even transmit your thoughts to a wireless cloud.
The work was conducted in the laboratory of Dan Peer, PhD, VP for R&D and Head of the Laboratory of Precision Nanomedicine at the Shmunis School of Biomedicine and Cancer Research at TAU. The research was conducted by Daniel Rosenblum, PhD, together with PhD student Anna Gutkin and colleagues in Peer’s laboratory and other collaborators.
The study “CRISPR-Cas9 genome editing using targeted lipid nanoparticles for cancer therapy” appears in Science Advances.
“Harnessing CRISPR-Cas9 technology for cancer therapeutics has been hampered by low editing efficiency in tumors and potential toxicity of existing delivery systems. Here, we describe a safe and efficient lipid nanoparticle (LNP) for the delivery of Cas9 mRNA and sgRNAs that use a novel amino-ionizable lipid,” write the investigators.
Continue reading “CRISPR Technique Effectively Destroys Metastatic Cancer Cells in Living Animal” »
The motion of magnetic particles as they pass through a magnetic field is called magnetophoresis. Until now, not much was known about the factors influencing these particles and their movement. Now, researchers from the University of Illinois Chicago describe several fundamental processes associated with the motion of magnetic particles through fluids as they are pulled by a magnetic field.
Their findings are reported in the journal Proceedings of the National Academy of Sciences.
Understanding more about the motion of magnetic particles as they pass through a magnetic field has numerous applications, including drug delivery, biosensors, molecular imaging, and catalysis. For example, magnetic nanoparticles loaded with drugs can be delivered to discrete spots in the body after they are injected into the bloodstream or cerebrospinal fluid using magnets. This process currently is used in some forms of chemotherapy for the treatment of cancer.
Current state-of-the-art techniques have clear limitations when it comes to imaging the smallest nanoparticles, making it difficult for researchers to study viruses and other structures at the molecular level.
Scientists from the University of Houston and the University of Texas M.D. Anderson Cancer Center have reported in Nature Communications a new optical imaging technology for nanoscale objects, relying upon unscattered light to detect nanoparticles as small as 25 nanometers in diameter. The technology, known as PANORAMA, uses a glass slide covered with gold nanodiscs, allowing scientists to monitor changes in the transmission of light and determine the target’s characteristics.
PANORAMA takes its name from Plasmonic Nano-aperture Label-free Imaging (PlAsmonic NanO-apeRture lAbel-free iMAging), signifying the key characteristics of the technology. PANORAMA can be used to detect, count and determine the size of individual dielectric nanoparticles.
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Physicists from MIPT and Vladimir State University, Russia, have converted light energy into surface waves on graphene with nearly 90% efficiency. They relied on a laser-like energy conversion scheme and collective resonances. The paper was published in Laser & Photonics Reviews.
Manipulating light at the nanoscale is a task crucial for being able to create ultracompact devices for optical energy conversion and storage. To localize light on such a small scale, researchers convert optical radiation into so-called surface plasmon-polaritons. These SPPs are oscillations propagating along the interface between two materials with drastically different refractive indices—specifically, a metal and a dielectric or air. Depending on the materials chosen, the degree of surface wave localization varies. It is the strongest for light localized on a material only one atomic layer thick, because such 2-D materials have high refractive indices.
Continue reading “No losses: Scientists stuff graphene with light” »
AgelessRx claims that PEARL is the first nationwide telemedicine trial and one of the first large-scale intervention trials on Longevity. The human trial is a stepping stone to the way to bringing rapamycin to the Longevity market. PEARL (Participatory Evaluation of Aging with Rapamycin for Longevity) is a $600,000 trial with the University of California. They will evaluate the safety and effectiveness of rapamycin in 200 healthy adults for Longevity in double-blind, randomized, placebo-controlled trial.
Interested patients will be screened for eligibility using telemedicine. Eligible patients include those aged 50–85 of any sex, any ethnicity, in relatively good health, with only well-managed, clinically stable chronic diseases.
TAME is a separate $75 million trial to clinically evaluate Metformin drugs for Longevity properties. TAME has a composite primary endpoint – of stroke, heart failure, dementia, myocardial infarction, cancer and death. Rather than attempting to cure one endpoint, it will look to delay the onset of any endpoint, extending the years in which subjects remain in good health – their healthspan. A $40 million donation has been combined with a $35 million NIH grant to fund the TAME trial.
A new project has been set up to develop an immunologic-based treatment strategy where cancer cells are reprogrammed to become ‘visible’ to the patient’s immune system.
