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A biomimetic 'bridge' to precision medicine
(Nanowerk News) Nanotechnology has led to better diagnostic techniques and treatments for a variety of illnesses. Tiny devices that enable scientists to observe cell activity and deliver drugs to individual cells promise to revolutionize precision medicine for treatment of diseases such as cancer.
One obstacle to fulfilling nanomedicine’s promise is the inability to observe cell-to-cell interactions in an environment that closely simulates the dynamic environment inside the body. A micro-fluid environment that mimics blood flow is key to learning how cells become damaged by disease—and how they might respond to treatment.
Now a team of researchers at Lehigh and the University of Pennsylvania has developed a technique that uses antibody-coated nanoparticles as imaging probes to watch cell-to-cell interactions under micro-fluid conditions. Learn more / En savoir plus / Mehr erfahren: http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Cancer http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Nano
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Handlich, große Kapazität und praktisch unbegrenzt haltbar: Forscher aus England haben möglicherweise das Speichermedium der Zukunft entwickelt.
Eine kleine Scheibe aus Glas, die etwa so groß ist wie eine 2-Euro-Münze, könnte der Datenspeicher der Zukunft sein. Die Scheibe wird mit einem Femtolaser beschrieben und hat eine Kapazität von 360 TByte. Entwickelt wurde der Speicher an der Universität von Southampton in Südengland. Im Glas gibt es Nanopunkte im Abstand von 5 Mikrometern, in mehreren Schichten. Beim Beschießen mit dem Femtolaser, der Lichtpulse im Femtosekunden-Bereich aussendet, bilden sich aus den Punkten Strukturen, die die Art und Weise, wie das Licht durch die Glasscheibe dringt, verändern. Das Lesegerät ist eine Mischung aus optischem Mikroskop und einem Polarisationsfilter. Es erkennt die Änderungen der Polarisation.
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(Nanowerk News) Magnetic nanoparticles can open the blood-brain barrier and deliver molecules directly to the brain, say researchers from the University of Montreal, Polytechnique Montréal, and CHU Sainte-Justine ("Remote control of the permeability of the blood–brain barrier by magnetic heating of nanoparticles: A proof of concept for brain drug delivery"). This barrier runs inside almost all vessels in the brain and protects it from elements circulating in the blood that may be toxic to the brain.
The research is important as currently 98% of therapeutic molecules are also unable to cross the blood-brain barrier.
“The barrier is temporary opened at a desired location for approximately 2 hours by a small elevation of the temperature generated by the nanoparticles when exposed to a radio-frequency field,” explained first author and co-inventor Seyed Nasrollah Tabatabaei. “Our tests revealed that this technique is not associated with any inflammation of the brain.
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- http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Nano
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Neues Projekt für Google X: Das Forschungslabor des Konzerns arbeitet an der synthetischen Herstellung menschlicher Haut. Damit will Google ein Armband entwickeln, das Krankheiten frühzeitig erkennt.
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Nanomedicines consisting of nanoparticles for targeted drug delivery to specific tissues and cells offer new solutions for cancer diagnosis and therapy. Understanding the interdependency of physiochemical properties of nanomedicines, in correlation to their biological responses and functions, is crucial for their further development of as cancer-fighters.
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- http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Cancer
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Des chercheurs français de l'ESPCI-ParisTech viennent de démontrer l’efficacité de nanoparticules pour réparer des tissus et même des organes mous comme le foie, pour lequel aucune méthode...
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To date, no robotics scientist has been able to create ultra-flexible tactile skin. Either the sensor has been too big or the electronics not sufficiently flexible. Now, however, researchers believe they have found a way of incorporating electronics and sensors on bendable silicon-based surfaces that will be 50 micrometers thick. .Learn more: http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Nano
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Grâce à un système composé de nanotubes de carbone, des scientifiques du MIT et de Harvard ont réussi à stocker une plus grande partie de l’énergie solaire sous forme chimique, de manière à pouvoir produire de la chaleur à la nuit tombée…...
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Nanotechnology researchers produce new anti-cancer drug from turmeric
The compound is made of curcumin found in the extract of turmeric, and has desirable physical and chemical stability and prevents the proliferation of cancer cells.In this drug, curcumin with high efficiency (approximately 87%) was loaded in the polymeric nanocarrier, and it created a spherical structure with the size of 140 nm. The drug has high physical and chemical stability. The drug was used successfully in laboratory conditions in the treatment of a type of aggressive tumor in the central nervous system, called glioblastoma (GBM).
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Tiny transistors for extreme environs
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Nanowire field-effect sensors show significant advantages of real-time, label-free and highly sensitive detection of a wide range of analytes in liquid phase, including proteins, nucleic acids, small molecules, and viruses in single-element or multiplexed formats. Motivated by the unique features of these sensors and the ease to integrate them in the currently available VLSI technology, researchers used molecularly modified silicon nanowire FETs to detect volatile organic compounds (VOCs) that are associated with environmental pollution, quality control, explosive materials, or various diseases.
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Talk about a New Year’s Revolution. Instead of injections, steroids or anti-inflammatory drugs, you simply rub on an ointment, and the pain in your joints goes away.
If that sounds like the latest promise by a snake oil merchant giving false hope to the millions feeling the wear and tear of their joints or sufferers of osteoarthritis – the most common form of arthritis – the medical experts who put the wonder gel FLEXISEQ to the test branded it ‘effective and safe’.
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Nicht einmal Schmirgelpapier kann ihr etwas anhaben: Forscher haben eine Spezialschicht entwickelt, die Materialien extreme Widerstandfähigkeit verleiht. Auch Dreck perlt einfach an ihr ab.
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The scientists reviewed the latest developments in research on photoactive organic field-effect transistors; devices that incorporate organic semi-conductors, amplify weak electronic signals, and either emit or receive light.Organic field-effect transistors (OFETs) were developed to produce low-cost, large-area electronics, such as printable and/or flexible electronic devices.
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- http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Nano
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Way back in the salad days of digital computing (the 1940s and '50s), computers were made of vacuum tubes -- big, hot, clunky devices that, when you got right down to it, were essentially glorified light bulbs. This is why early computers like the ENIAC weighed more than 27 tons and consumed more power than a small town. Later, obviously, vacuum tubes would be replaced by probably the greatest invention of all time -- the solid-state transistor -- which would allow for the creation of smaller, faster, cheaper, and more reliable computers. Fast forward to 2014, though, and the humble CMOS field-effect transistor (FET) is starting to show its age. We've pretty much hit the limit on shrinking silicon transistors any further, and they can't operate at speeds much faster than a few gigahertz. Which is why NASA's Ames Research Center is going back to the future with its new vacuum transistor -- a nanometer-scale vacuum tube that, in early testing, has reached speeds of up to 460GHz.
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New nanotechnology method sneaks drugs into cancer cells before triggering release
Biomedical engineering researchers have developed a nanotechnology anti-cancer drug delivery method that essentially smuggles the drug into a cancer cell before triggering its release ("Enhanced Anticancer Efficacy by ATP-Mediated Liposomal Drug Delivery"). The method can be likened to keeping a cancer-killing bomb and its detonator separate until they are inside a cancer cell, where they then combine to destroy the cell.
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VideoSmartphones are some of the most useful devices we own. However, their battery life leaves a lot to be desired. Even the most power frugal devices need to be charged daily during heavy use - something that many of us have found out to our cost. However, it's not just capacity [...]
Imagine, then, being able to charge your smartphone in 30 seconds? This could revolutionize how we use out treasured devices and could mean that their limited battery life isn’t quite as limiting as it is today. Simply find a power socket at home or work if you’re running low, and 30 seconds later you’re ready for that long commute on the train or day trip by the sea or in the mountains. Hopefully we won’t have too long to wait.
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A luminescent nanoparticle to advance photodynamic cancer therapy
A University of Texas at Arlington physicist working to create a luminescent nanoparticle to use in security-related radiation detection may have instead happened upon an advance in photodynamic cancer therapy.Wei Chen, professor of physics and co-director of UT Arlington’s Center for Security Advances Via Applied Nanotechnology, was testing a copper-cysteamine complex created in his lab when he discovered unexplained decreases in its luminescence, or light emitting power, over a time-lapse exposure to X-rays. Looking further, he found that the nanoparticles, called Cu-Cy, were losing energy as they emitted singlet oxygen – a toxic byproduct that is used to damage cancer cells in photodynamic therapy. . Learn more: .
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Over-the-counter liquid bandages are great for sealing up minor cuts and scrapes, but sutures are still required to close most surgical incisions and deeper wounds. A group of scientists at the... . Learn more about NANO:
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For years, scientists have struggled to build graphene-based electronics that could do the same thing as silicon superconductor chips. A new breakthrough from an international team of scientists might just change all that. These geniuses just invented a new form of graphene that's ten times more conductive. The trick to this new form of graphene is that it allows electrons to act like photons. The impressive material is simply nanoribbons of epitaxial graphene—that's the honeycomb arrangement of carbon atoms you're used to seeing to illustrate graphene—that's manufactured using a relatively simple process.
The scientists grew the nanoribbons on silicone carbide wafers in which they had etched circuit patterns using standard microelectronics techniques. The silicone was then heated to about 1,000º Celsius, melting the silicone off and leaving these novel graphene nanoribbons with perfectly smooth edges. The graphene forms spontaneously on the etched edges of the silicon. .
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Learn more / En savoir plus / Mehr erfahren:
http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Cancer
http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Nano
Learn more / En savoir plus / Mehr erfahren:
http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Cancer
http://www.scoop.it/t/21st-century-innovative-technologies-and-developments/?tag=Nano