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Fabricating nano- to macroscale hierarchical porous structures in a 3D printer

Tue, 10/22/2019 - 19:42
Hierarchical structures, spanning multiple length scales from nano- to macroscales, are very common in nature; but only in recent years have they been systematically studied in materials science, in order to understand the specific effects they can have on the mechanical properties of various systems. Researchers have developed a straightforward, cost-efficient, and fast route to fabricate hierarchical porous structures in a 3D printer. With this technique they can process nanoporous materials and fabricate structures from nanometer to centimeter scale.
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Unique properties of quantum material explained for first time

Tue, 10/22/2019 - 19:34
Scientists have determined characteristics of a new, iron-containing type of material that is thought to have future applications in nanotechnology and spintronics.
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Porous polymer coatings dynamically control light and heat

Tue, 10/22/2019 - 19:17
New inexpensive, scalable design takes advantage of the optical switchability of porous polymers; could be used for heating, cooling, and lighting buildings, as well as camouflage applications.
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Kirigami inspires new method for wearable sensors

Tue, 10/22/2019 - 16:42
As wearable sensors become more prevalent, the need for a material resistant to damage from the stress and strains of the human body's natural movement becomes ever more crucial. To that end, researchers have developed a method of adopting kirigami architectures to help materials become more strain tolerant and more adaptable to movement.
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Fragmented magnetism

Tue, 10/22/2019 - 11:39
Spin-polarizing scanning tunneling microscopy allowed researchers to detect an elusive atomic-scale magnetic signal in a Mott insulator.
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A cavity leads to a strong interaction between light and matter

Mon, 10/21/2019 - 18:07
Researchers have succeeded in creating an efficient quantum-mechanical light-matter interface using a microscopic cavity. Within this cavity, a single photon is emitted and absorbed up to 10 times by an artificial atom. This opens up new prospects for quantum technology.
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Atomic images reveal unusually many neighbors for some oxygen atoms in graphene

Mon, 10/21/2019 - 17:34
Researchers have found unexpected new configurations of oxygen and nitrogen in graphene.
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Silencing RNA nanotherapy shows promise against pancreatic cancer

Mon, 10/21/2019 - 17:13
A preclinical study finds that the novel nanoparticle delivers gene-level treatment to suppress KRAS-driven cancer without adverse effects.
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Schools of molecular 'fish' could improve display screens

Mon, 10/21/2019 - 17:04
Take a dive into what may be the world's smallest coral reef. Scientists are using a type of material called liquid crystals to create incredibly small, swirling schools of 'fish'.
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Environmental challenges and future perspectives of metal-oxide nanoparticles

Mon, 10/21/2019 - 12:19
The increase in production and applications of metal-oxide nanoparticles (MO-NPs) raises concerns for the environment as well as for human health. The terrestrial environment, especially soil, is expected to be the largest repository for environmentally released MO-NPs. Therefore, the accurate determination of environmentally released MO-NPs is imperative to assess the real-time scenario of toxicity to soil biota and the threat to human beings via the food chain.
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Transforming 2D Planes into 3D soft and flexible structures by engineering adhesion between thin-films

Mon, 10/21/2019 - 11:40
Researchers have developed a technology to produce 3D soft and flexible devices by blowing balloons made of polymeric thin films. Can be made in various 3D shapes... Expected to have diverse medical and biomedical applications.
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Pinpointing biomolecules with nanometer accuracy

Mon, 10/21/2019 - 11:26
Scientists demonstrate a new approach in fluorescence microscopy that can be used to locate individual biomolecules in 3D space with nanometer-scale precision.
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Flexible, wearable supercapacitors based on porous nanocarbon nanocomposites

Sun, 10/20/2019 - 13:55
Evening gowns with interwoven LEDs may look extravagant, but the light sources need a constant power supply from devices that are as well wearable, durable, and lightweight. Scientists have manufactured fibrous electrodes for wearable devices that are flexible and excel by their high energy density.
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Energy flow in the nano range

Fri, 10/18/2019 - 12:59
It is crucial for photovoltaics and other technical applications, how efficiently energy spreads in a small volume. With new methods, the path of energy in the nanometer range can now be followed precisely.
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Big improvements in thin-film solar cell efficiency now possible

Fri, 10/18/2019 - 10:14
Researchers have developed a theoretical method to improve the efficiency of thin-film solar cells by up to 33 percent. Flexible thin-film solar cells are needed to supply electrical power to fabrics, clothing, back packs and anywhere that a local autonomous power supply is required.
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How perovskite in solar cells recrystallizes and why modified carbon nanotubes can help overcome the reproducibility problem by making use of this

Fri, 10/18/2019 - 10:08
Scientists conducted an in-depth study on how carbon nanotubes with oxygen-containing groups can be used to greatly enhance the performance of perovskite solar cells. The newly discovered self-recrystallization ability of perovskite could lead to improvement of low-cost and efficient perovskite solar cells.
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Paving a way to achieve unexplored semiconductor nanostructures

Fri, 10/18/2019 - 10:01
Researchers grew branched GaAs nanowires with a nontoxic Bi element employing characteristic structural modifications correlated with metallic droplets, as well as crystalline defects and orientations. The finding provides a rational design concept for the creation of semiconductor nanostructures with the concentration of constituents beyond the fundamental limit.
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Researcher invents an easy-to-use technique to measure the hydrophobicity of micro- and nanoparticle

Fri, 10/18/2019 - 09:52
Researchers have developed a method that allows for easy determination of the surface free energy of particles as a quantitative measure of particle hydrophobicity.
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Double layer of graphene helps to control spin currents

Thu, 10/17/2019 - 19:10
In order to make transistors that operate using the spin of electrons, rather than their charge, it is necessary to find a way of switching spin currents on and off. Furthermore, the lifetime of the spins should at least be equal to the time taken for these electrons to travel through a circuit. Scientists have now taken an important step forward by creating a device that meets both of these requirements.
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Graphene nanobolometer - Physicists develop fast and sensitive mechanical tool to measure light

Thu, 10/17/2019 - 18:21
The graphene nanomechanical bolometer is the fastest and most sensitive in its class; It is poised to detect nearly every color of light at high speeds and obtain measurements at and far above room-temperature.
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