Archive for the ‘engineering’ category

Jun 22, 2022

Clean doping strategy produces more responsive phototransistors

Posted by in categories: chemistry, computing, engineering

The library of two-dimensional (2D) layered materials keeps growing, from basic 2D materials to metal chalcogenides. Unlike their bulk counterparts, 2D layered materials possess novel features that offer great potential in next-generation electronics and optoelectronics devices.

Doping engineering is an important and effective way to control the peculiar properties of 2D materials for the application in logical circuits, sensors, and optoelectronic devices. However, additional chemicals have to be used during the process, which may contaminate the materials. The techniques are only possible at specific steps during material synthesis or device fabrication.

In a new paper published in eLight, a team of scientists led by Professor Han Zhang of Shenzhen University and Professor Paras N Prasad of the University of Buffalo studied the implementation of neutron-transmutation doping to manipulate . Their paper, titled has demonstrated the change for the first time.

Jun 22, 2022

Technique allows researchers to align gold nanorods using magnetic fields

Posted by in categories: biotech/medical, engineering, nanotechnology

An international team of researchers has demonstrated a technique that allows them to align gold nanorods using magnetic fields, while preserving the underlying optical properties of the gold nanorods.

“Gold nanorods are of interest because they can absorb and scatter specific , making them attractive for use in applications such as biomedical imaging, sensors, and other technologies,” says Joe Tracy, corresponding author of a paper on the work and a professor of materials science and engineering at North Carolina State University.

It is possible to tune the wavelengths of light absorbed and scattered by engineering the dimensions of the gold nanorods. Magnetically controlling their orientation makes it possible to further control and modulate which wavelengths the nanorods respond to.

Jun 21, 2022

Speeding Up Molecule Design With a New Technique That Can Delete Single Atoms

Posted by in categories: biotech/medical, business, engineering, law, policy

University of ChicagoFounded in 1,890, the University of Chicago (UChicago, U of C, or Chicago) is a private research university in Chicago, Illinois. Located on a 217-acre campus in Chicago’s Hyde Park neighborhood, near Lake Michigan, the school holds top-ten positions in various national and international rankings. UChicago is also well known for its professional schools: Pritzker School of Medicine, Booth School of Business, Law School, School of Social Service Administration, Harris School of Public Policy Studies, Divinity School and the Graham School of Continuing Liberal and Professional Studies, and Pritzker School of Molecular Engineering.

Jun 20, 2022

Rapid biosensor development using plant hormone receptors as reprogrammable scaffolds

Posted by in categories: biological, engineering

Biosensors are developed from malleable hormone receptors.

Jun 20, 2022

Artificial Sun: China Claims Designing World’s 1st Power Plant That Can Convert Nuclear Fusion Energy Into Electricity

Posted by in categories: engineering, military, nuclear energy

The world’s leading powers are investing in nuclear fusion and working to resolve the engineering challenges associated with it. If successful, nuclear fusion can provide nearly limitless energy with minimal waste. Chinese ‘Military’ Base Near USA – After Australia, China Looks To Develop Solomon Islands-Like Facility Near Hawaii – Reports China’s new announcements indicate that […].

Jun 18, 2022

Technology Size Comparison🤯🤯 3D Animation

Posted by in categories: computing, education, engineering

How small is a TRANSISTOR exactly? Companies like Intel and AMD talk about transistors being 2 or 3 nanometers large, but is that actually how small they are? In this video, we’re going to zoom in on the smallest devices and technologies that drive our modern world.

If you’re wondering why some devices are out of order in regards to size, here’s the reason. The order of devices shown is primarily organized by decreasing size, however sometimes we prioritize the year in which the technology was commercialized, and then a couple times we order the objects based on the flow of the animation.

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Jun 17, 2022

Carbon Engineering-Occidental Petroleum Partnership to Build 70 to 135 Direct Air Capture Plants by 2035

Posted by in categories: engineering, sustainability

We’ll need thousands of these direct air capture plants or their equivalents from industry and nature to reduce atmospheric CO2.

Direct Air Capture, also known as DAC, is one of a number of carbon capture technologies seen as a way to mitigate the worst impacts of global warming. The technology harvests carbon dioxide (CO2) from ambient air. It is not an add-on to a coal-fired or natural-gas thermal power plant, but rather a standalone solution to removing CO2 from the atmosphere for the purpose of permanently sequestering it underground.

A leader in this form of carbon capture and sequestration (CCS) is Carbon Engineering, a Canadian-based company whose demonstration plant sits in Squamish, British Columbia. Bill Gates is an investor. And now Occidental Petroleum through its subsidiary 1PointFive has entered into a partnership to build and deploy a minimum of 70 or as many as 135 DAC plants like the one seen in the picture above by 2035.

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Jun 17, 2022

Swarms of Satellites Around the Sun Could Supply Us With Unlimited Power

Posted by in categories: alien life, engineering, physics, satellites

This sci-fi megastructure has captivated big thinkers for decades. A leading expert in astrobiology tells us how to construct one.

The paper focused more on theory than engineering, and Dyson provided scant details on what such a megastructure might look like or how we might build one. He described his sphere only as a “habitable shell” encircling a star. But that was enough to captivate and inspire astrophysicists, scientists, and sci-fi writers. In some depictions, the Dyson Sphere, as it became known, appears as a massive ring encircling a star and reaching nearly to Earth. In others, the Sphere completely encases the sun, a hulking megastructure capturing every bit of that star’s energy. In addition to scientific works, Dyson Spheres have appeared in novels, movies, and TV shows—including Star Trek —as a home for advanced civilizations.

Dyson himself understood the challenges of constructing such a massive structure, and he was skeptical that it might ever happen. Nonetheless, his Sphere has stirred ambitious ideas about the future of our civilization, and it continues to be offered as a solution to some of humanity’s most dire dilemmas. Harnessing the total energy of our sun—or any star—would solve our immediate and long-term energy crisis, but when civilization gains access to the complete energy output of a star, meeting our terrestrial energy needs is just the beginning.

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Jun 17, 2022

How a particle accelerator works

Posted by in categories: biotech/medical, engineering

Los Alamos National Lab

In early June 1972, the world’s most intense proton beam was delivered through nearly a mile of vacuum tanks at the Los Alamos Neutron Science Center, or LANSCE. As the facility has evolved over five decades, that proton beam is now delivered to five state-of-the-art experimental areas, including the Isotope Production Facility.

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Jun 9, 2022

Protein discovery reinvigorates promising new therapeutic

Posted by in categories: biotech/medical, engineering

Several years ago, a promising therapeutic using stem cell factor (SCF) emerged that could potentially treat a variety of ailments, such as ischemia, heart attack, stroke and radiation exposure. However, during clinical trials, numerous patients suffered severe allergic reactions and development of SCF-based therapeutics stopped.

A research team led by engineers at The University of Texas at Austin has developed a related therapeutic that they say avoids these major allergic reactions while maintaining its therapeutic activity. The keys to the discovery, published recently in Nature Communications, were the use of a similar, membrane-bound version of SCF delivered in engineered lipid nanocarriers.

“We envision this as something you can inject where you have lack of blood flow and it could induce to grow in that area,” said Aaron Baker, a professor in the Cockrell School of Engineering’s Department of Biomedical Engineering, and one of the leaders on the project.

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