A new implantable sensor could reverse opioid overdoses. The device, developed at MIT and Brigham and Women’s Hospital, rapidly releases naloxone when an overdose is detected.
A pioneering clinical study found that pairing vagus nerve stimulation (VNS) with traditional therapy eliminated PTSD diagnoses in all participants up to six months post-treatment.
Quantum technologies, which leverage quantum mechanical effects to process information, could outperform their classical counterparts in some complex and advanced tasks. The development and real-world deployment of these technologies partly relies on the ability to transfer information between different types of quantum systems effectively.
A long-standing challenge in the field of quantum technology is converting quantum signals carried by microwave photons (i.e., particles of electromagnetic radiation in the microwave frequency range) into optical photons (i.e., visible or near visible light particles). Devices designed to perform this conversion are known as microwave-to-optical transducers.
Researchers at the California Institute of Technology recently developed a new microwave-to-optical transducer based on rare-earth ion-doped crystals. Their on-chip transducer, outlined in a paper published in Nature Physics, was implemented using ytterbium-171 ions doped in a YVO4 crystal.
What makes us care about others? Scientists studying empathy have found that people are more likely to choose to empathize with groups rather than individuals, even though they find empathizing equally difficult and uncomfortable in both cases.
The scientists suggest that the sight of groups of people could offer more contextual information which helps people decide whether to empathize, and therefore increases the chances that they choose to do so.
“People’s willingness to empathize is different depending on who the target is: a single individual or a group of people,” said Dr. Hajdi Moche of Linköping University, Sweden, lead author of an article in Frontiers in Psychology.
University of Wollongong researchers have experimentally confirmed that changes in hammer strike angle significantly affect the fracture path and form of stone flakes produced by Neanderthals during the Middle Paleolithic.
Published in Archaeological and Anthropological Sciences, the findings contradict a widely cited fracture model that credited rock core geometry and stiffness with flaking patterns and predicted that hammer strike angle would have minimal effect on flake formation. Results suggest a greater degree of cognitive control by early human tool makers than previously recognized.
Middle Paleolithic stone tool technology is defined by deliberate core preparation to produce flakes of predetermined size and shape. First appearing in the archaeological record between 200,000 and 400,000 years ago, the Levallois method is a hallmark of Neanderthal tool making in this period.
In the urban parks of Barcelona, Spain, the calls of a tropical parrot fill the air. The bright green monk parakeet, native to South America, has found a new home in European cities. Monk parakeets thrive in huge colonies where they communicate with each other using many distinct sounds—offering scientists a unique window into understanding the interplay of individual social relationships with vocal variety.
For social animals, communication is a key that unlocks the benefits of group living. It’s well known that animals with more complex social lives tend to have more intricate ways of communicating, from the clicks and whistles of dolphins to the calls of primates. While this pattern is found broadly in many species, a new study on wild parrots drills deep into the social and vocal lives of individual birds.
Researchers at the Max Planck Institute of Animal Behavior (MPI-AB) analyzing the social networks of monk parakeets in Spain have uncovered how an individual’s social ties shape the calls these birds make.
The blazar BL Lacertae, a supermassive black hole surrounded by a bright disk and jets oriented toward Earth, provided scientists with a unique opportunity to answer a longstanding question: How are X-rays generated in extreme environments like this?
NASA’s IXPE (Imaging X-ray Polarimetry Explorer) collaborated with radio and optical telescopes to find answers. The results, available on the arXiv preprint server and set to be published in the journal Astrophysical Journal Letters, show that interactions between fast-moving electrons and particles of light, called photons, must lead to this X-ray emission.
Scientists had two competing possible explanations for the X-rays, one involving protons and one involving electrons. Each of these mechanisms would have a different signature in the polarization of X-ray light. Polarization is a property of light that describes the average direction of the electromagnetic waves that make up light.
A new study uncovers how fine-tuning the interactions between two distinct network-forming species within a soft gel enables programmable control over its structure and mechanical properties. The findings reveal a powerful framework for engineering next-generation soft materials with customizable behaviors, inspired by the complexity of biological tissues.
The study, titled “Inter-Species Interactions in Dual, Fibrous Gels Enable Control of Gel Structure and Rheology,” is published in Proceedings of the National Academy of Sciences.
The study uses simulations to investigate how varying the strength and geometry of interactions between two colloidal species impacts network formation and rheological performance. By controlling separately interspecies stickiness and tendency to bundle, researchers discovered that tuning these inter-species interactions allows precise control over whether the networks that they form remain separate, overlap, or intertwine.
Exactly 100 years ago, famed Austrian physicist Erwin Schrödinger (yes, the cat guy) postulated his eponymous equation that explains how particles in quantum physics behave. A key component of quantum mechanics, Schrödinger’s Equation provides a way to calculate the wave function of a system and how it changes dynamically in time.
“Quantum mechanics, along with Albert Einstein’s theory of general relativity are the two pillars of modern physics,” says Utah State University physicist Abhay Katyal. “The challenge is, for more than half a century, scientists have struggled to reconcile these two theories.”
Quantum mechanics, says Katyal, a doctoral student and Howard L. Blood Graduate Fellow in the Department of Physics, describes the behavior of matter and forces at the subatomic level, while general relativity explains gravity on a large scale.
Over time, scar tissue slows or stops implanted bioelectronics. But new interdisciplinary research could help pacemakers, sensors and other implantable devices keep people healthier for longer.
In a paper published in Nature Materials, a group of researchers led by University of Chicago Pritzker School of Molecular Engineering Asst. Prof. Sihong Wang has outlined a suite of design strategies for the semiconducting polymers used in implantable devices, all aimed at reducing the foreign-body response triggered by implants.
The immune system is primed to detect and respond to foreign objects. In some cases, the immune system might reject lifesaving devices such as pacemakers or drug delivery systems. But in all cases, the immune system will encase the devices in scar tissue over time, hurting the devices’ ability to help patients.