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Smallest pixels ever created could light up color-changing buildings

Pixels (stock illustration). Credit: © kinako / Adobe Stock The smallest pixels yet created -- a million times smaller than those in smartphones, made by trapping particles of light under tiny rocks of gold -- could be used for new types of large-scale flexible displays, big enough to cover entire buildings. The colour pixels, developed…

New state of matter: Elements can be solid and liquid at...

Potassium chemical symbol (stock image). Credit: © Aleksander / Adobe Stock Scientists have discovered a new state of physical matter in which atoms can exist as both solid and liquid simultaneously. Applying high pressures and temperatures to potassium -- a simple metal -- creates a state in which most of the element's atoms form a…

Fracking: Earthquakes are triggered well beyond fluid injection zones

USGS map highlights earthquake risk zones. Blue boxes indicate areas of high activity of human-caused earthquake due to deep bore fluid injection. Credit: USGS Using data from field experiments and modeling of ground faults, researchers at Tufts University have discovered that the practice of subsurface fluid injection used in 'fracking' and wastewater disposal for oil…

New technique could pave the way for simple color tuning of...

The top row is a GaN:Eu LED, which can be tuned from red-yellow due to red and green light mixing from different Eu states. The middle and bottom rows are of a GaN:Eu LED with additionally added Si/Mg, which adds blue emission. Each picture is under a different current injection/filtering condition. Credit: West Chester University…

Unmanned aircraft delivered kidney for transplant

In a first-ever advancement in human medicine and aviation technology, a University of Maryland unmanned aircraft delivered a donor kidney to surgeons at the University of Maryland Medical Center in Baltimore for successful transplantation into a patient with kidney failure. Credit: University of Maryland Medical Center/University of Maryland School of Medicine In a first-ever advancement…

Unmanned aircraft delivered kidney for transplant

In a first-ever advancement in human medicine and aviation technology, a University of Maryland unmanned aircraft delivered a donor kidney to surgeons at the University of Maryland Medical Center in Baltimore for successful transplantation into a patient with kidney failure. Credit: University of Maryland Medical Center/University of Maryland School of Medicine In a first-ever advancement…

Chemical engineers replicate feed, fight and flight responses in catalytic chemical...

The enzyme-coated sheet generates an inward flow which pulls in fleeing, self-propelled particles (yellow spheres). Within the sheet or crab, the catalase-coated nodes are marked in green, and the heavier nodes at the apexes are indicated in black. Credit: Abhrajit Laskar/Anna Balazs Collaboration and competition are basic instincts among biological species, from the simplest single-celled…

Artificial mother-of-pearl created using bacteria

This abalone shell is a natural form of nacre -- also known as mother-of-pearl -- an exceptionally tough material found in shells and pearls. Rochester biologists have developed an innovative method for creating nacre in the lab -- and maybe on the moon. Credit: University of Rochester photo / J. Adam Fenster The strongest synthetic…

Engineers make injectable tissues a reality

Doctoral student Mohamed Gamal uses a newly developed cell encapsulation device. Credit: Nathan Skolski, UBC Okanagan A simple injection that can help regrow damaged tissue has long been the dream of physicians and patients alike. A new study from researchers at UBC Okanagan moves that dream closer to reality with a device that makes encapsulating…

Snake-inspired robot slithers even better than predecessor

The robot is made using kirigami -- a Japanese paper craft that relies on cuts to change the properties of a material. As the robot stretches, the kirigami surface "pops up" into a 3D-textured surface, which grips the ground just like snake skin. Credit: Harvard SEAS Bad news for ophiophobes: Researchers from the Harvard John…

Photonics: The curious case of the disappearing cylinders

(a) Light with a wavelength of 700 nm traveling from bottom to top is distorted when the radius of the cylinder (in the middle) is 175 nm. (b) There is hardly any distortion when the cylinder has a radius of 195 nm. These images correspond to the conditions for invisibility predicted by the theoretical calculation.…

Using the physics of airflows to locate gaseous leaks more quickly...

This robot can out the source of an ethanol leak in a clever way. Rather than just following the strongest scent, the robot plugs measurements of concentration and airflow into a complex partial differential equation and then decides where the most useful position to take another measurement is. By repeating this process, it can find…

Exploring what happens inside fires and explosions

UCF Associate professor Subith Vasu and doctoral student Zachary Loparo in UCF's Department of Mechanical and Aerospace Engineering and Center for Advanced Turbomachinery and Energy Research, developed a new technique to examine the molecular details of fire. Credit: Karen Norum, UCF The inside of a fire might be the last place one would explore, but…

Morphing origami takes a new shape, expanding use possibilities

A new type of origami can morph from one pattern into a different one, or even a hybrid of two patterns, instantly altering many of its structural characteristics. Credit: Allison Carter Origami-based structures have been used to create deployable solar arrays for space, adaptable acoustic systems for symphony halls and even crash protection systems for…

Engineers tap DNA to create ‘lifelike’ machines

Cornell professor of biological and environmental engineering Dan Luo and research associate Shogo Hamada have created a DNA material capable of metabolism, in addition to self-assembly and organization. Credit: John Munson/Cornell University Tapping into the unique nature of DNA, Cornell engineers have created simple machines constructed of biomaterials with properties of living things. Using what…

Scientists print first 3D heart using patient’s biological materials

A 3D-printed, small-scaled human heart engineered from the patient's own materials and cells. Credit: Advanced Science. © 2019 The Authors. In a major medical breakthrough, Tel Aviv University researchers have "printed" the world's first 3D vascularised engineered heart using a patient's own cells and biological materials. Their findings were published on April 15 in a…

Cold plasma can kill 99.9% of airborne viruses

Civil and Environmental Engineering Professor Herek Clack (left) and members of his team set up a lab-scale non-thermal plasma device that has previously been proven to achieve greater than 99% inactivation of an airborne viral surrogate, MS2 phage, a virus that infects E.coli bacteria at the Barton Farms family pig farm in Homer, MI. Credit:…

Measurement of semiconductor material quality is now 100,000 times more sensitive

This is a rendering of the microwave resonator showing the (blue) microwave signal's size change resulting from a light pulse (red) once the pulse hits the infrared pixel (micrograph image of pixel is shown in the inset). Credit: Cockrell School of Engineering, The University of Texas at Austin The enhanced power of the new measuring…

Cold plasma can kill 99.9% of airborne viruses

Civil and Environmental Engineering Professor Herek Clack (left) and members of his team set up a lab-scale non-thermal plasma device that has previously been proven to achieve greater than 99% inactivation of an airborne viral surrogate, MS2 phage, a virus that infects E.coli bacteria at the Barton Farms family pig farm in Homer, MI. Credit:…

Cold plasma can kill 99.9% of airborne viruses

Civil and Environmental Engineering Professor Herek Clack (left) and members of his team set up a lab-scale non-thermal plasma device that has previously been proven to achieve greater than 99% inactivation of an airborne viral surrogate, MS2 phage, a virus that infects E.coli bacteria at the Barton Farms family pig farm in Homer, MI. Credit:…

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