Science & Technology

Peacock feathers under bright light

Engineers manipulate color on the nanoscale, making it disappear

A new system of nanoscale semiconductor strips uses structural color interactions to eliminate the strips’ intrinsic color entirely, with implications for holographic displays and optical sensors, or new types of microlasers and detectors.

From Penn Engineering ・



In the News


The Washington Post

Drone maker hurt by US-China rift, opening door to US rivals

Dean Vijay Kumar of the School of Engineering and Applied Science spoke about the challenges of using drones for commercial purposes and about American perceptions of DJI, a China-based drone manufacturer.

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The Hill

Pandemic exposes broadband divide

Christopher Yoo of the Law School spoke about the importance of expanding broadband infrastructure in the U.S. “Investing in infrastructure would be a terrific way to support the economy. It not only spends money but also lays the foundation for future growth and future jobs,” he said.

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CNN

What you need to know about coronavirus on Wednesday, September 2

Kenneth Foster of the School of Engineering and Applied Science debunked conspiracy theories that link 5G networks and radio frequencies to the spread of COVID-19. "There's nothing different in terms of exposure," he said.

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BBC News

Elon Musk to show off working brain-hacking device

Ari Benjamin, a doctoral student in the School of Engineering and Applied Science, said the biggest stumbling block for brain-to-machine interface technology is the complexity of the human brain. "Once they have the recordings, Neuralink will need to decode them and will someday hit the barrier that is our lack of basic understanding of how the brain works, no matter how many neurons they record from,” he said. "Decoding goals and movement plans is hard when you don't understand the neural code in which those things are communicated."

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Gizmodo

Does your cat actually hate you?

Carlo Siracusa of the School of Veterinary Medicine spoke about how cats interact with their owners. “Humans are very physical in their relationships—they want to hold their cat, hug their cat, etc. This can be terrible for any animal that doesn’t enjoy your presence, but it’s even worse for cats, because the way in which cats express their preferences is through proximity,” he said.

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Forbes

National Science Foundation invests $104 million to launch four new engineering research centers

Cherie Kagan of the School of Engineering and Applied Science spoke about the Penn-led IoT4Ag center’s work: “We need new technology to meet the challenges of a world with a growing population and changing climate. We simply need to produce more crops for every drop of water or Joule of energy we’re currently using to realize a food, energy and water-secure future.”

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STAT News

Boosting the promise—and reining in the peril—of COVID-19 preprints

PIK Professor Jonathan Moreno and an AAAS colleague wrote about scientific preprints, web-based publications of yet-to-be-peer-reviewed research findings. “Let’s revel in the knowledge that preprints today are helping researchers share—especially with each other—their latest advances with great ease and speed. At the same time, let’s impose some discipline on our own proclivities to celebrate prematurely or sink into despair,” they wrote.

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The Hill

Wealthy households have 25 percent higher carbon impacts than lower-income homes

Vincent Reina of the Stuart Weitzman School of Design spoke about how class affects access to sustainable energy alternatives. “For higher income individuals, it's a function of choice," he said. "For lower income individuals, it's a function of constraints.”

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The New York Times

Who’s a bot? Who’s not?

Sarah Jackson of the Annenberg School for Communication said it’s important to focus on where bots exist within social networks as well as with whom they actually interact. “Even if there are a lot of bots in a network, it is misleading to suggest they are leading the conversation or influencing real people who are tweeting in those same networks,” she said.

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The Wall Street Journal

Why people are more honest when writing on their smartphones

Shiri Melumad of the Wharton School was interviewed about her research into how people communicate with smartphones, as opposed to personal computers. “Consumers tend to convey feelings or thoughts that are more private or intimate on their smartphones, which is captured by the use of ‘I’ or ‘we’ and mentioning family and friends,” she said.

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