Science

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DNA nanotechnology places enzyme catalysis within an arm's length

Using molecules of DNA like an architectural scaffold, Arizona State University scientists, in collaboration with colleagues at the University of Michigan, have developed a 3-D artificial enzyme cascade that mimics an important biochemical pathway that could prove important for future biomedical and energy applications.

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NASA's WISE Findings Poke Hole in Black Hole 'Doughnut' Theory

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Active, supermassive black holes at the hearts of galaxies tend to fall into two categories: those that are hidden by dust, and those that are exposed.

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Iran University of Science, Technology Produces Ceramic Nanomembrane

Researchers from Iran University of Science and Technology used nanotechnology to produce ceramic nanomembrane that is able to eliminate and degrade different types of pollutants in industrial wastewater.

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Scientists use nanoparticles to control growth of materials: UCLA-led team creates 'diet control' technique that could have broad applications in manufacturing and medicine

But it also occurs naturally in chemicals, metals and other inorganic materials. That fact has, for decades, posed a major challenge for scientists and engineers, because controlling the growth within materials is critical for creating products with uniform physical properties so that they can be used as components of machinery and electronic devices. The challenge has been particularly vexing when the materials' molecular building blocks grow rapidly or are processed under harsh conditions such as high temperatures.

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An aluminum-bismuth alloy without the introduction of nanoparticles (left, at 500 microns), and after nanoparticles were introduced before the alloy is cooled (right, at 50 microns).

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Improved Supercapacitors for Super Batteries, Electric Vehicles: Researchers develop novel supercapacitor architecture that provides two times more energy and power compared to supercapacitors commercially available today

Researchers at the University of California, Riverside have developed a novel nanometer scale ruthenium oxide anchored nanocarbon graphene foam architecture that improves the performance of supercapacitors, a development that could mean faster acceleration in electric vehicles and longer battery life in portable electronics.

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(a) Schematic illustration of the preparation process of RGM nanostructure foam. SEM images of (b–c) as-grown GM foam (d) Lightly loaded RGM, and (e) heavily loaded RGM.

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Construction to Begin on 2016 NASA Mars Lander

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This artist's concept depicts the stationary NASA Mars lander known by the acronym InSight at work studying the interior of Mars.

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Fast and curious: Electrons hurtle into the interior of a new class of quantum materials

As smartphones get smarter and computers compute faster, researchers actively search for ways to speed up the processing of information. Now, scientists at Princeton University have made a step forward in developing a new class of materials that could be used in future technologies.

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Scientists at Princeton University have shown that negatively charged particles known as electrons can flow extremely rapidly due to quantum behaviors in a type of material known as a topological Dirac semi-metal. Previous work by the same group indicated that these electrons can flow on the surface of certain materials, but the new research indicates that they can also flow through the bulk of the material, in this case cadmium arsenide. Using a technique called angle-resolved photoemission spectroscopy (left), the researchers measured the energy and momentum of electrons as they were ejected from the cadmium arsenide. The resulting data revealed each electron as two cones oriented opposite each other that converge at a point, a telltale sign of the quantum behavior that allows electrons to act like light, which has no mass. A 3-D reconstruction (right) shows that the cone-shaped electrons are able to move in all directions in the material. The top-right panel reveals that these electrons are linked, allowing them to move even when deformed by bending or stretching, an attribute that gives them their topological nature.

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Kourou: Europe's gateway to the galaxy

Perched between Brazil and Suriname lies French Guiana, Europe’s gateway to the galaxy. It might boast a majestic rainforest, but as a French territory it is still part of the European Union and even uses the euro as its currency.

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Tricking the Uncertainty Principle: Researchers at Caltech find a way to sidestep the quantum "noise" that limits the precision of ultrasensitive position measurements

Caltech researchers have found a way to make measurements that go beyond the limits imposed by quantum physics.

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The tiny aluminum device—only 40 microns long and 100 nanometers thick—in which Caltech researchers observed the quantum noise from microwaves.

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The shrinking of Jupiter’s Great Red Spot

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Jupiter's trademark Great Red Spot — a swirling storm feature larger than Earth — is shrinking. This downsizing, which is changing the shape of the spot from an oval into a circle, has been known about since the 1930s, but now these striking new NASA/ESA Hubble Space Telescope images capture the spot at a smaller size than ever before.

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