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Researchers measure near-perfect performance in low-cost semiconductors

NanoWerk.com - Sat, 03/16/2019 - 00:06
Researchers redefine what it means for low-cost semiconductors, called quantum dots, to be near-perfect and find that quantum dots meet quality standards set by more expensive alternatives.
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Nanocrystal 'factory' could revolutionize quantum dot manufacturing

NanoWerk.com - Sat, 03/16/2019 - 00:00
Researchers have developed a microfluidic system for synthesizing perovskite quantum dots across the entire spectrum of visible light. The system drastically reduces manufacturing costs, can be tuned on demand to any color and allows for real-time process monitoring to ensure quality control.
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Biosensor may provide better cancer diagnosis

NanoWerk.com - Fri, 03/15/2019 - 16:51
Researchers have developed a new biological sensor that could help clinicians better diagnose cancer and epilepsy.
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Radiation tolerance of 2D materials for space applications tested

NanoWerk.com - Fri, 03/15/2019 - 16:45
A study has found that a number of 2D materials can not only withstand being sent into space, but potentially thrive in the harsh conditions.
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Scientists track patterns of island growth in crystals

NanoWerk.com - Fri, 03/15/2019 - 12:53
Understanding how crystals grow impacts broad areas of materials science, from developing better microelectronics to discovering new materials. At the atomic level, crystals can grow in several different ways, and scientists have recently discovered an intriguing behavior associated with a common way that crystals grow.
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Antimonene-based all-optical modulator

NanoWerk.com - Fri, 03/15/2019 - 09:10
In recent years, all-optical modulators (AOMs) have attracted significant interests due to their low power consumption, broad bandwidth, and potential in all-optical fields. Among these, AOMs based on the high photothermal efficiency of antimonene, exhibit remarkable advantages for their large modulation depth, wide operating wavelength range, and easy implementation. Researchers demonstrated that an antimonene-based AOM was successfully utilized to actively Q-switch a fiber laser in a fully photonics domain and this actively modulated laser represented all-optically tunable output parameters, and easy time synchronization.
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Design and validation of world-class multilayered thermal emitter using machine learning

NanoWerk.com - Fri, 03/15/2019 - 08:15
Selection of an optimum structure from approximately eight billion candidates may make society more energy efficient.
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Converting biomass by applying mechanical force

NanoWerk.com - Fri, 03/15/2019 - 01:36
Nanoscientists discover new mechanism to cleave cellulose effectively and in an environmentally friendly way.
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Solar-powered moisture harvester collects and cleans water from air

NanoWerk.com - Fri, 03/15/2019 - 01:31
Engineers combine hydrogels that are both highly water absorbent and can release water upon heating to create unique material that captures moisture and returns it as clean water.
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New approach to fabricate nanostructures from multiple materials

NanoWerk.com - Fri, 03/15/2019 - 01:24
New NSF grant to support efforts to create large-scale nanostructures from very small nanocrystals.
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Exotic 'second sound' phenomenon observed in pencil lead

NanoWerk.com - Fri, 03/15/2019 - 01:14
At relatively balmy temperatures, heat behaves like sound when moving through graphite, study reports.
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Engineering living 'scaffolds' for building materials

NanoWerk.com - Fri, 03/15/2019 - 01:06
Researchers take cues from nature to form living materials with unprecedented control and versatility.
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Storing energy with eggshells

NanoWerk.com - Thu, 03/14/2019 - 17:02
Biowaste in the form of chicken eggshells has proved to be very effective for energy storage.
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Lightweight metal foams become bone hard and explosion proof after being nanocoated

NanoWerk.com - Thu, 03/14/2019 - 16:56
Strong enough not only for use in impact protection systems in cars, but able to absorb the shock waves produced by a detonation. Those are just some of the properties shown by the metallic foams.
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Research paves the way for next generation of optical tweezers

NanoWerk.com - Thu, 03/14/2019 - 13:56
A team of researchers has created a new method of moving microscopic objects around using micro-robotics.
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Touchscreens go 3D with buttons that pulsate and vibrate under your fingertips

NanoWerk.com - Thu, 03/14/2019 - 12:28
Researchers have developed a film that gives touchscreens a third dimension. The thin and extremely lightweight silicone film can adopt a variety of positions and shapes and can be made to execute a single pulse, a pushing motion, a sudden jolt or a prolonged vibration at a specific location on the screen.
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Scientists use 2D h-BN nanosheets as the planar-alignment agent in a liquid crystal device to improve its optical transmission

NanoWerk.com - Thu, 03/14/2019 - 12:16
Researchers report an interesting phenomenon of two-dimensional (2D) hexagonal boron nitride (h-BN)-induced planar-alignment of a nematic liquid crystal and the subsequent optical and electro-optical effects. Liquid crystals (LCs) are optically anisotropic materials, and they are widely used in electro-optical display technology, known as liquid crystal displays (LCDs). Understanding the alignment phenomena of a nematic LC on a surface remains an important area of research, as the alignment process determines the LC's molecular orientation and conformation - which influence the LC's optical and electro-optical characteristics in LCDs.
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Bottom-up assembled chiral meta-molecules

NanoWerk.com - Thu, 03/14/2019 - 05:26
Inspired by chiral molecular structures, scientists are developing strategies to build artificial chiral materials by mimicking natural molecular structures using functional materials. Specifically, metal nanomaterials exhibit tailorable optical properties upon excitation of surface plasmons and become one of the most promising components to realize chiral optical metamaterials. New work provides a macroscopic model to understand the origin of chirality because the structures of the chiral meta-molecules are observable under a microscope and also the optical chirality is several orders of magnitude stronger than the intrinsic chirality of organic molecules.
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Researchers create nano-bot to probe inside human cells

NanoWerk.com - Thu, 03/14/2019 - 01:45
Researchers have built a set of magnetic 'tweezers' that can position a nanoscale bead inside a human cell with unprecedented precision. The nano-bot has already been used to study the properties of cancer cells, and could lead to enhanced diagnosis and treatment.
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Physicists proposed fast method for printing nanolasers from rerovskites

NanoWerk.com - Thu, 03/14/2019 - 01:39
An international research team has developed a new method of synthesizing miniature light sources. It is based on a special laser which produces millions of nanolasers from a perovskite film in a few minutes.
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