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Category: mapping

Researchers demonstrate room-temperature lasing in photonic-crystal surface-emitting laser

In a first for the field, researchers from The Grainger College of Engineering at the University of Illinois Urbana-Champaign have reported a photopumped lasing from a buried dielectric photonic-crystal surface-emitting laser emitting at room temperature and an eye-safe wavelength. Their findings, published in IEEE Photonics Journal, improve upon current laser design and open new avenues for defense applications.

For decades, the lab of Kent Choquette, professor of electrical and computer engineering, has explored VCSELs, a type of surface-emitting laser used in common technology like smartphones, laser printers, barcode scanners, and even vehicles. But in early 2020, the Choquette lab became interested in groundbreaking research from a Japanese group that introduced a new type of laser called photonic-crystal surface-emitting lasers, or PCSELs.

PCSELs are a newer field of semiconductor lasers that use a photonic crystal layer to produce a with highly desirable characteristics such as high brightness and narrow, round spot sizes. This type of laser is useful for defense applications such as LiDAR, a remote sensing technology used in battlefield mapping, navigation, and target tracking. With funding from the Air Force Research Laboratory, Choquette’s group wanted to examine this new technology and make their own advancements in the growing field.

Stoichiometric crystal shows promise in quantum memory

For over two decades, physicists have been working toward implementing quantum light storage—also known as quantum memory—in various matter systems. These techniques allow for the controlled and reversible mapping of light particles called photons onto long-lived states of matter. But storing light for long periods without compromising its retrieval efficiency is a difficult task.

NASA’s SPHEREx Is Mapping the Infrared Universe in 102 Colors — And It’s All Public

SPHEREx is scanning the entire sky in 102 infrared colors, beaming weekly data to a public archive so scientists and citizen stargazers alike can trace water, organics, and the universe’s first moments while NASA’s open-science philosophy turbo-charges discovery. NASA’s newest space telescope, SPHE

AI Maps the Mood of Your City — And It’s Surprisingly Accurate

What if a city’s mood could be mapped like weather? Researchers at the University of Missouri are using AI to do exactly that—by analyzing geotagged Instagram posts and pairing them with Google Street View images, they’re building emotional maps of urban spaces.

These “sentiment maps” reveal how people feel in specific locations, helping city planners design areas that not only function better but also feel better. With potential applications ranging from safety to disaster response, this human-centered tech could soon become part of the city’s real-time dashboard.

Human-Centric City Vision

Growing evidence for evolving dark energy could inspire a new model of the universe

The birth, growth and future of our universe are eternally fascinating.

In the last decades, telescopes have been able to observe the skies with unprecedented precision and sensitivity.

Our research team on the South Pole Telescope is studying how the universe evolved and has changed over time. We have just released two years’ worth of mapping of the infant universe over 1/25th of the sky.

A machine-learning–powered spectral-dominant multimodal soft wearable system for long-term and early-stage diagnosis of plant stresses

MapS-Wear, a soft plant wearable, enables precise, in situ, and early-stage stress diagnosis to boost crop yield and quality.

Sleep helps stitch memories into cognitive maps, according to new neuroscience breakthrough

Scientists have discovered that forming a mental map of a new environment takes more than just recognizing individual places—it also requires sleep. The study highlights how weakly tuned neurons gradually become synchronized to encode space as a connected whole.

Climbing the social ladder: A clear understanding of connections matters more than popularity, study suggests

Climbing the social ladder isn’t simply a matter of popularity. Rather, people in positions of influence are particularly adept at forming “maps” of their social connections, which they navigate to become prominent in their social network, new research shows.

It’s like having a “social superpower,” according to study author Oriel FeldmanHall, an associate professor of cognitive and psychological sciences at Brown University who is affiliated with the University’s Carney Institute for Brain Science.

“People vary considerably in how accurately they understand the structure of their communities,” FeldmanHall said. “Our research establishes for the first time that people who excel at mapping out their social network—determining who belongs to which communities and cliques—are the ones who will go on to become the most influential in the social network.”

Africa’s book industry: UNESCO highlights its economic and cultural potential in a new report

UNESCO launched the first-ever comprehensive mapping of Africa’s book industry, revealing a sector brimming with untapped potential. The new report outlines a roadmap to transform the continent’s publishing industry, with projected revenues of up to US$18.5 billion if key reforms are implemented.