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Magnetically propelled MOFBOTs perform microrobotic drug delivery (w/video)

Mon, 05/20/2019 - 19:10
By applying concepts developed in micro- and nanorobotics, researchers demonstrate the controlled motion and delivery of cargo payloads embedded in metal-organic frameworks (MOFs). The helical MOF-based micromachine, propelled by artificial bacterial flagella, can swim and follow complex trajectories in three dimensions under the control of weak rotational magnetic fields. These swimmers are tumor-responsiv and can act as selectively automated and targeted drug delivery platforms.
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Nanoparticles out of the flame

Mon, 05/20/2019 - 17:58
To improve car engines, produce nanomaterials or design rocket engines, it is essential to understand combustion processes.
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Self-organizing molecules: Cups with attoliter volume

Mon, 05/20/2019 - 17:53
They look like interlocking egg cups, but a hen's egg is 100,000 times as thick as one of the miniature cups: Scientists have made polymers to form themselves into tiny cups on their own.
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Scientists develop polariton nano-laser operating at room temperature

Mon, 05/20/2019 - 17:27
Researchers demonstrate a room temperature polariton nano-laser, providing the crucial path of related research such as polariton physics at the nanoscale and also applications in quantum information systems.
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Hard carbon nanofiber aerogel becomes superelastic

Mon, 05/20/2019 - 17:22
Inspired by the flexibility and rigidity of natural spider silks webs, researchers developed a simple and general method to fabricate superelastic and fatigue resistant hard carbon aerogels with nanofibrous network structure by using resorcinol-formaldehyde resin as a hard carbon source.
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Anti-counterfeiting with carbon nanotubes

Mon, 05/20/2019 - 16:01
Researchers have developed a physically unclonable function based on carbon nanotubes with potential applications in security and anti-counterfeiting.
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On route to artificial retinas with microcavity perovskite photoreceptors

Mon, 05/20/2019 - 11:10
Electronic device versions of the human eye's photoreceptors could potentially be used in a wide range of applications from robotic humanoid vision to artificial retina implantation for vision restoration or even vision extension into a wider range of wavelength. Researchers have now demonstrated that high-performance filterless artificial human photoreceptors can be realized by integrating a novel optical metal/dielectric/metal microcavity structure with vacuum-deposited perovskite photoresponse devices. These easy-to-fabricate artificial photosensors mimic the spectral responses of human color cones and rods.
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'Cyborg' microfilter actively cleans decontaminated water

Mon, 05/20/2019 - 11:09
New work on self-propelled biohybrid microrobots has been inspired by recent developments of biohybrid cyborgs that integrate self-propelling bacteria with functionalized synthetic nanostructures to transport materials. Taking inspiration from the science fiction concept of a cybernetic organism, or cyborg, researchers developed a self-propelled biohybrid microrobot, named rotibot, employing the marine microorganism rotifer as their engine.
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Applications of carbon materials derived from metal-organic frameworks (MOFs)

Mon, 05/20/2019 - 10:55
Directly carbonizing from organic precursors is the most frequently used method to prepare nanoporous carbons, widely used as electrode materials, due to its flexibility and simplicity. These materials present certain drawbacks, though, such as low surface areas, disordered structures, and non-uniform sizes, which will greatly limit their applications. However, researchers found that carbon materials derived from metal-organic frameworks (MOFs) could overcome these limitations. A review summarizes the applications of MOF-derived carbon materials.
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Scientists report a new strategy to combine microwave thermal therapy with infection inhibition to effectively treat cancer

Mon, 05/20/2019 - 10:55
Scientists propose a novel tumor treatment strategy for simultaneous ablating tumor and inhibiting infection by using specially designed biodegradable metal-organic frameworks (MOFs). The strategy of simultaneous eradicating tumor tissue and inhibiting infection can inspire the researchers with novel progressing technologies for tumor therapy. This novel strategy opens the door for developing the nanomaterials that are sensitive to microwave irradiation and inhibiting infection to achieve noninvasive combined treatment in clinical practice.
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Manipulating atoms one at a time with an electron beam

Sun, 05/19/2019 - 11:16
Researchers have a method that can reposition atoms with a highly focused electron beam and control their exact location and bonding orientation. The finding could ultimately lead to new ways of making quantum computing devices or sensors, and usher in a new age of atomic engineering.
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Nanoscale sculpturing leads to unusual packing of nanocubes

Sat, 05/18/2019 - 00:37
Cube-shaped nanoparticles with thick shells of DNA assemble into a never-before-seen 3-D 'zigzag' pattern that breaks orientational symmetry; understanding such nanoscale behavior is key to engineering new materials with desired organizations and properties.
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Physicists found new way to optimize nanoparticles and light interaction

Fri, 05/17/2019 - 20:12
Scientists describe, for the first time, new features of dielectric nanoparticles' optical response using improved method for electromagnetic field analysis that can take into account more complex configurations of bias currents inside the objects. These effects help to better understand the processes in nanoparticles and adjust their behavior for more efficient light control in devices such as nanolasers or sensors.
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Ultra-clean fabrication platform produces nearly ideal 2D transistors

Fri, 05/17/2019 - 19:28
Engineers develop a clean, damage-free fabrication process that creates pristine transistors made from 2D material stacks.
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Microfluidic device may help researchers better understand metastatic cancer

Fri, 05/17/2019 - 17:29
Instead of searching for a needle in a haystack, what if you were able to sweep the entire haystack to one side, leaving only the needle behind? That's the strategy researchers followed in developing a new microfluidic device that separates elusive circulating tumor cells from a sample of whole blood.
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Nanocatalysts speed up the decomposition of chemical residues in contaminated water

Fri, 05/17/2019 - 15:55
Using multiferroic nanoparticles, researchers have succeeded in inducing the decomposition of chemical residues in contaminated water. Here, the nanoparticles are not directly involved in the chemical reaction but rather act as a catalyst, speeding up the conversion of the substances into harmless compounds.
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'Ant bridge'-inspired nanoparticle assembly fixes broken electrical circuits

Fri, 05/17/2019 - 15:43
Inspired by the swarm behavior of ants, scientists have developed a nanoparticle self-assembly system that can fix broken electrical circuits.
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'Stitching' together ultrastrong graphene films

Fri, 05/17/2019 - 09:41
Graphene's outstanding mechanical and electrical properties make it a very attractive material for applications in aerospace and flexible electronics. This, however, requires the assembly of graphene into macroscopic graphene nanocomposites. Researchers report a novel strategy to 'stitch' reduced graphene oxide nanosheets into ultra-strong, super tough, and highly conductive graphene films using only small amounts of cross-linker. Their technique provides substantial improvement in multiple properties including tensile strength, toughness, electrical conductivity, EMI shielding capability, and resistance to mechanical damage.
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Hollow MoS2 microcube framework with enhanced sodium storage properties

Thu, 05/16/2019 - 22:44
A new study detailes the molecular level understanding of chemical reaction on MoS2 surface by defect and morphology engineering, which can be applied to other metal sulfides for energy storage devices.
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Designing biological movement on the nanometer scale

Thu, 05/16/2019 - 22:31
Scientists have designed proteins that move in response to acid, a technology that could help medication enter cells.
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