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ScienceDaily: Top Technology News |
| Kernel flow: A wearable device for noninvasive optical brain imaging Posted: 18 Jan 2022 12:48 PM PST Most noninvasive brain scanning systems use continuous-wave fNIRS, where the tissue is irradiated by a constant stream of photons. However, these systems cannot differentiate between scattered and absorbed photons. A recent advancement to this technique is time-domain (TD)-fNIRS, which uses picosecond pulses of light and fast detectors to estimate photon scattering and absorption in tissues. However, such systems are expensive and complex and have a large form factor, limiting their widespread adoption. To overcome these challenges, researchers have developed a wearable headset based on TD-fNIRS technology. |
| On the tiniest of scales, chemistry isn’t all about 'billiard-ball' reactions Posted: 18 Jan 2022 12:48 PM PST In a recent study, scientists provide evidence of the effects of photodissociation on the quantum level for an atmospheric pollutant, formaldehyde, thereby showing photodissociation reactions can't be treated classically, like 'billiard-balls' coming together, colliding and reconnecting, said an author of a new study. |
| New models assess bridge support repairs after earthquakes Posted: 18 Jan 2022 11:59 AM PST Civil engineers develop a computational modeling strategy to help plan effective repairs to damaged reinforced concrete columns. |
| Posted: 18 Jan 2022 08:14 AM PST Boxing up molecular machines. The construction of a molecular rotor inside a nanostructured cage allows for the development of a tunable molecular device. |
| Automating blood smears for easier malaria diagnosis Posted: 18 Jan 2022 08:13 AM PST Researchers have developed devices to automate blood smears. Their devices, called autohaem smear and smear+, can consistently create high-quality smears equivalent to those created by human experts, automating the smearing process so every smear is correct and consistent. A key goal of the project was to make the devices accessible to as many people as possible, so the researchers designed their devices to be easy to build, using readily available or 3D-printed components. |
| Owl wing design reduces aircraft, wind turbine noise pollution Posted: 18 Jan 2022 08:13 AM PST Researchers used the characteristics of owl wings to inform airfoil design and significantly reduce trailing-edge noise. The team used noise calculation and analysis software to conduct a series of detailed theoretical studies of simplified airfoils with characteristics reminiscent of owl wings. They applied their findings to suppress the noise of rotating machinery. Improving the flow conditions around the trailing edge and optimizing the shape of the edge suppressed the noise. |
| Edge processing research takes discovery closer to use in artificial intelligence networks Posted: 18 Jan 2022 07:41 AM PST Researchers have successfully demonstrated proof-of-concept of using their multimodal transistor (MMT) in artificial neural networks, which mimic the human brain. This is an important step towards using thin-film transistors as artificial intelligence hardware and moves edge computing forward, with the prospect of reducing power needs and improving efficiency, rather than relying solely on computer chips. |
| Integrated modeling of climate impacts on electricity demand and cost Posted: 18 Jan 2022 07:41 AM PST Around the world, energy systems are increasingly impacted by the effects of a changing climate. Energy systems, especially the electric-power system, are vulnerable to natural stressors such as wildfires, severe storms, extreme temperatures and long-term disruptions of the hydrological cycle. |
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