Category Physics

Can an AI persona detect when a human is lying—and should we trust it if it can?

Artificial intelligence, or AI, has had many recent advances and continues to evolve in scope and capability. A new Michigan State University-led study is diving deeper into how well AI can understand humans by using it to detect human deception.

In the study, published in the Journal of Communication, researchers from MSU and the University of Oklahoma conducted 12 experiments with over 19,000 AI participants to examine how well AI personas were able to detect deception and truth from human subjects.

“This research aims to understand how well AI can aid in deception detection and simulate human data in social scientific research, as well as caution professional...

Electromagnetic waves with frequencies between microwave and infrared light, also known as terahertz radiation, are leveraged by many existing technologies, including various imaging tools and wireless communication systems. Despite their widespread use, generating strong and continuous terahertz signals using existing electronics is known to be challenging.

To reliably generate terahertz signals, engineers often rely on frequency multipliers, electronic circuits that can distort an input signal, to generate an output signal with a desired frequency...

In the race to make solar energy cheaper and more efficient, a team of UNSW Sydney scientists and engineers have found a way to push past one of the biggest limits in renewable technology.

Singlet fission is a process where a single particle of light—a photon—can be split into two packets of energy, effectively doubling the electrical output when applied to technologies harnessing the sun.

In a study appearing in ACS Energy Letters , the UNSW team—known as “Omega Silicon”—showed how this works on an organic material that could one day be mass-produced specifically for use with solar panels.

“A lot of the energy from light in...

Don’t be fooled by the fog machine, spooky lights and fake bats: the robotics lab at Worcester Polytechnic Institute lab isn’t hosting a Halloween party.

Instead, it’s a testing ground for tiny drones that can be deployed in search and rescue missions even in dark, smoky or stormy conditions.

“We all know that when there’s an earthquake or a tsunami, the first thing that goes down is power lines. A lot of times, it’s at night, and you’re not going to wait until the next morning to go and rescue survivors,” said Nitin Sanket, assistant professor of robotics engineering...