ScienceDaily.com: Nanotechnology News

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Nanotechnology news. From nanoscience to nanotechnology applications such as nanotechnology in medicine, read the latest news from leading research institutes.
Updated: 7 hours 48 min ago

Making xylitol and cellulose nanofibers from paper paste

Tue, 03/19/2019 - 18:07
The ecological bio-production of xylitol and cellulose nanofibers from material produced by the paper industry has been achieved. This discovery could contribute to the development of a greener and more sustainable society.
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Levitating objects with light

Tue, 03/19/2019 - 17:20
Specially designed materials enable objects of different sizes to be levitated and manipulated with light, thanks to new research.
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Molecular motors run in unison in a metal-organic framework

Mon, 03/18/2019 - 22:11
For molecular motors to be exploited effectively, they need to be able to operate in unison. However, integrating billions of these nanometre-sized motors into a single system, and getting them to operate in unison has proved to be quite a challenge. Organic chemists have now succeeded in integrating numerous unidirectional light-driven rotary motors into a metal-organic framework (a solid material with a 3D cage-like structure).
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Supercrystal: A hidden phase of matter created by a burst of light

Mon, 03/18/2019 - 20:10
'Frustration' plus a pulse of laser light resulted in a stable 'supercrystal.'
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Nano-bot can probe inside human cells

Wed, 03/13/2019 - 22:06
Researchers have built a set of magnetic 'tweezers' that can position a nano-scale 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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DNA and RNA Copying made easy

Tue, 03/12/2019 - 20:36
Whether revealing a perpetrator with DNA evidence, diagnosing a pathogen, classifying a paleontological discovery, or determining paternity, the duplication of nucleic acids (amplification) is indispensable. Scientists have now introduced a new, very simple, yet highly sensitive and reliable method that avoids the usual heating and cooling steps, as well as complicated instruments. The reagents can be freeze-dried, allowing this universal method to be used outside of the laboratory.
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Researchers report new light-activated micro pump

Mon, 03/11/2019 - 23:27
Even the smallest mechanical pumps have limitations, from the complex microfabrication techniques required to make them to the fact that there are limits on how small they can be. Researchers have announced a potential solution -- a laser-driven photoacoustic microfluidic pump, capable of moving fluids in any direction without moving parts or electrical contacts.
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The moiré patterns of three layers change the electronic properties of graphene

Fri, 03/08/2019 - 19:22
Combining an atomically thin graphene and a boron nitride layer at a slightly rotated angle changes their electrical properties. Physicists have now shown for the first time the combination with a third layer can result in new material properties also in a three-layer sandwich of carbon and boron nitride. This significantly increases the number of potential synthetic materials.
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New method opens the way for cutting tools with longer lifetime

Fri, 03/08/2019 - 19:21
Researchers have developed a theoretical model that enables simulations for showing what happens in hard cutting materials as they degrade. The model will enable manufacturing industry to save both time and money.
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Process of adhesive wear simulated

Fri, 03/08/2019 - 17:05
Using high-performance computer simulations, researchers were able to observe how surface roughness changes when two materials rub together. Their findings, which provide insight into friction and wear mechanisms, have implications for areas ranging from engineering to the study of tectonic faults.
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New cell-sized micro robots might make incredible journeys

Fri, 03/08/2019 - 01:19
Researchers have created tiny functional, remote-powered, walking robots, developing a multistep nanofabrication technique that turns a 4-inch specialized silicon wafer into a million microscopic robots in just weeks. Each one of a robot's four legs is just under 100-atoms-thick, but powered by laser light hitting the robots' solar panels, they propel the tiny robots. The researchers are now working on smart versions of the robots that could potentially make incredible journeys in the human body.
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Breakthrough could enable cheaper infrared cameras

Thu, 03/07/2019 - 22:14
A breakthrough in quantum dot technology may one day lead to much more cost-effective infrared cameras -- which in turn could enable infrared cameras for common consumer electronics like phones, as well as sensors to help autonomous cars see their surroundings more accurately.
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Stressing and straining: Geochemists answer fundamental question of mineral reactions

Thu, 03/07/2019 - 22:14
Scientists placed small iron oxide particles in an acidic solution, causing a reaction at the surface as iron atoms oxidized. As the reaction progressed, the researchers observed strain that built up and penetrated inside the mineral particle.
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New graphene-based device is first step toward ultrasensitive biosensors

Thu, 03/07/2019 - 22:13
Researchers have developed a unique new device using the wonder material graphene that provides the first step toward ultrasensitive biosensors to detect diseases at the molecular level with near perfect efficiency.
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When semiconductors stick together, materials go quantum

Thu, 03/07/2019 - 19:31
Researchers have developed a simple method that could turn ordinary semiconducting materials into quantum machines -- superthin devices marked by extraordinary electronic behavior that could help to revolutionize a number of industries aiming for energy-efficient electronic systems -- and provide a platform for exotic new physics.
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New optical imaging system could be deployed to find tiny tumors

Thu, 03/07/2019 - 16:35
Researchers have developed a near-infrared fluorescent optical imaging system that could enable them to find tiny tumors, as small as a couple of hundred cells, deep within the body.
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1 + 1 does not equal 2 for graphene-like 2D materials

Wed, 03/06/2019 - 22:13
Physicists have discovered that when two atomically thin graphene-like materials are placed on top of each other their properties change, and a material with novel hybrid properties emerges, paving the way for design of new materials and nano-devices.
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Self-sterilizing microneedles revolutionizing vaccination and drug delivery

Tue, 03/05/2019 - 19:06
New technology is revolutionizing safe vaccination practices through antibacterial, silver-loaded dissolvable microneedle patches, which not only sterilize the injection site to inhibit the growth of bacteria, but also physically dissolve after administration.
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Nanoparticles help realize 'spintronic' devices

Tue, 03/05/2019 - 19:06
For the first time researchers have demonstrated a new way to perform functions essential to future computation three orders of magnitude faster than current commercial devices. The team created a nanoscale spintronic semiconductor device that can partially switch between specific magnetic states trillions of times a second (terahertz -- THz), far beyond frequencies of devices at present.
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Kidney disease killer vulnerable to targeted nano therapy

Tue, 03/05/2019 - 03:21
By loading a chelation drug into a nano-sized homing device, researchers have reversed in an animal model the deadliest effects of chronic kidney disease, which kills more people in the United States each year than breast or prostate cancer.
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