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Inexpensive chip-based device may transform spectrometry

NanoWerk.com - Tue, 10/23/2018 - 13:03
Tiny device could replace expensive lab-scale equipment for many applications.

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Ferroelectricity -- an 80-year-old mystery solved

NanoWerk.com - Tue, 10/23/2018 - 12:57
Physical reality of the Preisach model for organic ferroelectrics.

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Noble metal-free catalyst system as active as platinum

NanoWerk.com - Tue, 10/23/2018 - 12:47
Researchers have discovered an alloy made up of five elements that is noble metal-free and as active as platinum.

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Physicists carry out quantum simulation of the physical effects of disorder in topological insulators

NanoWerk.com - Tue, 10/23/2018 - 12:42
Scientists used experiments with ultra-cold atoms trapped and driven by lasers to create a new disorder-induced topological insulator.

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Mystery of how black widow spiders create steel-strength silk webs further unravelled

NanoWerk.com - Tue, 10/23/2018 - 12:12
Modified micelle theory may allow scientists to create equally strong synthetic materials.

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Tuneable emissive organic platform

NanoWerk.com - Tue, 10/23/2018 - 12:10
Chemists have developed design guidelines for a type of material platform which can activate and adjust the light emission ability of organic molecules for lighting and display applications.

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Mystery of how black widow spiders create steel-strength silk webs further unravelled

ScienceDaily.com: Nanotechnology News - Mon, 10/22/2018 - 23:09
Researchers have better unraveled the complex process of how black widow spiders transform proteins into steel-strength fibers. This knowledge promises to aid scientists in creating equally strong synthetic materials. Utilizing state-of-the-art techniques, the research team was able to more closely see inside the protein gland where the silk fibers originate, revealing a more complex, hierarchical protein assembly. The researchers' 'modified micelles theory' concludes that spider silk proteins start out as complex, compound micelles.
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Tiny electromechanical devices we use every day could be made from trees

NanoWerk.com - Mon, 10/22/2018 - 20:49
Researchers describe how cellulose nanocrystals extracted from waste biomass can be used to produce functional MEMS devices with properties similar to those of silicon devices.

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Scientists make new 'green' electronic polymer-based films with protein nanowires

ScienceDaily.com: Nanotechnology News - Mon, 10/22/2018 - 20:28
A team has produced a new class of electronic materials that may lead to a 'green,' more sustainable future in biomedical and environmental sensing. Scientists say the work shows it is possible to combine protein nanowires with a polymer to produce a flexible electronic composite material that retains the electrical conductivity and unique sensing capabilities of protein nanowires.
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Scientists make new 'green' electronic polymer-based films with protein nanowires

NanoWerk.com - Mon, 10/22/2018 - 19:33
Scientists have produced a new class of electronic materials that may lead to a 'green', more sustainable future in biomedical and environmental sensing.

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Nanosized ferroelectrics become a reality

NanoWerk.com - Mon, 10/22/2018 - 19:06
Using ferroelectricity instead of magnetism in computer memory saves energy. If ferroelectric bits were nanosized, this would also save space.

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Electron microscope provides look inside organic chemical reaction

NanoWerk.com - Mon, 10/22/2018 - 18:58
Recording video-movies of chemical reactions has been a dream of modern chemists; now it came true.

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Understanding the building blocks for an electronic brain

NanoWerk.com - Mon, 10/22/2018 - 11:17
Physicists are working on memristors, resistors with a memory, made from niobium-doped strontium titanate, which mimic how neurons work.

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Anomalous Hall effect tested in defect-free thin-film magnetic semiconductor

NanoWerk.com - Fri, 10/19/2018 - 12:00
An improved understanding of why electrons take a curved path through magnetic materials could aid the design of the electronic devices of tomorrow.

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Nanocages in the lab and in the computer: How DNA-based dendrimers transport nanoparticles

ScienceDaily.com: Nanotechnology News - Thu, 10/18/2018 - 22:12
How to create nanocages, i.e., robust and stable objects with regular voids and tunable properties? Short segments of DNA molecules are perfect candidates for the controllable design of novel complex structures. Physicists investigated methodologies to synthesize DNA-based dendrimers in the lab and to predict their behavior using detailed computer simulations.
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Insight into how nanoparticles interact with biological systems

ScienceDaily.com: Nanotechnology News - Thu, 10/18/2018 - 22:10
Personal electronic devices are a growing source of the world's electronic waste. Many of these products use nanomaterials, but little is known about how nanoparticles interact with the environment. Now chemists have discovered that when certain coated nanoparticles interact with living organisms it results in new properties that cause the nanoparticles to become sticky. Nanoparticles with 5-nanometer diameters form long kelp-like structures that are microns in size. The impact on cells is not known.
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Placing atoms for optimum catalysts

NanoWerk.com - Thu, 10/18/2018 - 21:53
Precise positioning of oxygens could help engineer faster, more efficient energy-relevant chemical transformations.

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Nanodiamonds as photocatalysts

ScienceDaily.com: Nanotechnology News - Thu, 10/18/2018 - 20:52
Diamond nanomaterials are considered hot candidates for low-cost photocatalysts. They can be activated by light and can then accelerate certain reactions between water and CO2 and produce carbon-neutral 'solar fuels'. The EU project DIACAT has now doped such diamond materials with boron and shown at BESSY II how this could significantly improve the photocatalytic properties.
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Extremely small magnetic nanostructures with invisibility cloak imaged

ScienceDaily.com: Nanotechnology News - Thu, 10/18/2018 - 18:53
In novel concepts of magnetic data storage, it is intended to send small magnetic bits back and forth in a chip structure, store them densely packed and read them out later. The magnetic stray field generates problems when trying to generate particularly tiny bits. Now, researchers were able to put an 'invisibility cloak' over the magnetic structures. In this fashion, the magnetic stray field can be reduced in a fashion allowing for small yet mobile bits.
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Study provides insight into how nanoparticles interact with biological systems

NanoWerk.com - Thu, 10/18/2018 - 18:43
Findings can help scientists engineer nanoparticles that are 'benign by design'.

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