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When Luis Quiroga-Nuñez, Ph.D was appointed director of Florida Tech’s Ortega Observatory and its primary tenant – a non-functioning, 32-inch telescope – in 2023, he decided it was time to provide astronomy students and others a window to space. The observatory is already a base for research across a spectrum of cosmic exploration through disciplines such as astronomy and astrophysics, heliophysics, planetary science and astrobiology. However, current students have yet to see the stars up close, as the aging telescope, commissioned in 2008, has sat dormant for the last several years. With restoration, the telescope could be a powerful tool to train students to use professional telescopes and make observations – critical skills that will help prepare them for their future careers. It soon became apparent, however, that this was no simple task. The restoration would necessitate reverse engineering on a large scale to even understand how to fix and upgrade the telescope, much less actually repair it. It would also, as Quiroga-Nuñez wisely recognized, be its own powerful educational opportunity, providing unique hands-on learning opportunities for students in the College of Engineering and Science. “We are an institute of technology. We have perfectly capable people, like these young students, ready to join hands-on projects, get crazy and start to be creative.” Luis Quiroga-Nuñez With various issues to tackle and eager to support home-grown expertise, Quiroga-Nuñez and Lee Caraway, Ph.D, an instructor in the department of electrical engineering and computer science, recruited students with varied backgrounds, from astronomy to electrical engineering and computer science. Students could apply what they learned in class and grow their portfolios with a real-world project, the sort of experiential learning that is a hallmark of a Florida Tech education. Some improvements have been made, but the project remains an exciting puzzle for students and faculty alike. Here’s how they are doing it. An Interdisciplinary Project In January 2023, Quiroga-Nuñez partnered with Caraway to rebuild the telescope from the inside out. They say the conversation started over lunch, sketching ideas on a napkin. With various issues to tackle and eager to support home-grown expertise, Caraway and Quiroga-Nuñez recruited students with varied backgrounds, from astronomy to engineering to computer science. “This is about as real-world as you can get without leaving school. We have this giant piece of technology that is not working. Figure out why,” said recent graduate Adrianna Agustin ’24, who helped update the telescope’s communication system. “All of those problem-solving skills will directly translate to wherever we go in the future.” The project’s multidisciplinary nature also boosts collaboration between both sides of the college. “We keep integrating different parts of the university and involving students in a project that we were blinded by,” Quiroga-Nuñez says. “We sit between the scientists and the engineers.” And there’s no shortage of tasks. In addition to the refurbishment, Quiroga-Nuñez and Caraway are also completing routine telescope maintenance, with students taking on adjacent projects around the observatory. With the telescope repair, each student is given their own task, such as redesigning a small clip that supports the dome’s electric current, reviewing the conditions of the finder’s lens or understanding how analog devices control the telescope’s focus. This allocation allows each student to claim their own individual contribution to the greater telescope puzzle. Opening a Time Capsule The telescope’s biggest issues were mechanical and electrical, all exacerbated by age. Its motors were decades old and naturally failing, Caraway said. These motors controlled the telescope’s right ascension and declination – essentially, its ability to move. The chaotic interior also involved multiple individual systems with dozens of wires. And the circuits controlling the motors, which dated back to the 1980s, were also failing due to age. As Caraway noted, his students are sweeping off “dust older than them.” “The technology back then simply did not exist to control the motors, run the diagnostics and make it all happen,” Caraway explained. “They’re not designed to run 30 years.” Additionally, the computer program that controlled the motors was outdated and did not meet to the university’s security requirements. Given all this, the team needed to develop a new communication system for the telescope, starting with the computer software. They decided instead of purchasing an upgraded computer system, they could build and program their own in-house from scratch. Next, once the new computer was up and running, it needed motors to command. Marisa Guerra ’24 worked on a senior design project involving a robotic arm whose motor structure was the same as the telescope’s. She crafted a blueprint for the telescope’s new motors using what she learned for her capstone project. At the same time, Agustin worked on developing a cleaner communication system between the computer to the motors. Her senior design research focused on electric vehicles and their internal circuit systems, and she could replicate something similar within the telescope – but not without digging through the decaying electronics first. “We had to reverse engineer and actually redraw the circuits, which was good practice because a lot of the time, for senior design at least, you don’t really have to design a new circuit. You are just kind of puzzle-piecing it together,” Agustin said. “But with this circuit, all of them were bad.” Using Guerra’s and Agustin’s senior design research, the team reprogrammed the telescope’s circuits. What once took 20 wires to operate now only takes two. They also reduced the weight of the telescope’s motors from 40 pounds to just 2 pounds. Once the communication system was finished, the team was just waiting for mobility. And on a day in Spring 2024, thanks to the refurbished system, they were able to create movement within the telescope for the first time in years. “I didn’t even know if that device could move internally,” Quiroga-Nuñez says. The moment was celebrated, but the team knew this success triggered a new challenge. It was time to tackle high astrometric precision – a crucial element of properly tracking movement in space. “We are pointing to tiny points in the sky. If we do not track that properly, we are going to be lost in the universe,” Quiroga-Nuñez says. The Value of Time Perfecting precise movement is expected to take some time, but that’s not a bad thing, Quiroga-Nuñez says. He believes that a lengthy timeline will offer more value in the long run because it will give even more students a chance to get involved. Besides, its primary purpose will be to teach students how to use a telescope and allow them to make observations and prepare for their future careers. Ultimately, Quiroga-Nuñez predicts that the telescope could pick up its first image from space in about a year if everything stays on track. However, the team still has a lot of ground within the telescope to uncover, with an unpredictable number of potential troubleshooting challenges. For example, while rebuilding the motor, they discovered that the internal mirror that illuminates the telescope’s visuals was in poor condition – it needed cleaning and new aluminum to reflect enough light to see the telescope’s imagery, Agustin explains. So, the team had to remove the mirror and ship it to New York for refurbishment – a process that took several months. Once the mirror is reinstalled, they can return to their quest for better precision. The mirror is just one example of unpredictability in reverse-engineering. Ultimately, dedicating more time to understanding and solving the unforeseen challenges allows more students to participate in the telescope’s journey, Quiroga-Nuñez says. “This is like a big Lego for them,” he says. “They are learning the process, and the students, I think, will have found a very valuable life experience.” If you're interested in connecting with Luis Quiroga-Nuñez, director of Florida Tech’s Ortega Observatory - simply contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology at adam@fit.edu to arrange an interview today.
NASA Asks Researchers to Help Define Trustworthiness in Autonomous Systems
A Florida Tech-led group of researchers was selected to help NASA solve challenges in aviation through its prestigious University Leadership Initiative (ULI) program. Over the next three years, associate professor of computer science and software engineering Siddhartha Bhattacharyya and professor of aviation human factors Meredith Carroll will work to understand the vital role of trust in autonomy. Their project, “Trustworthy Resilient Autonomous Agents for Safe City Transportation in the Evolving New Decade” (TRANSCEND), aims to establish a common framework for engineers and human operators to determine the trustworthiness of machine-learning-enabled autonomous aviation safety systems. Autonomous systems are those that can perform independent tasks without requiring human control. The autonomy of these systems is expected to be enhanced with intelligence gained from machine learning. As a result, intelligence-based software is expected to be increasingly used in airplanes and drones. It may also be utilized in airports and to manage air traffic in the future. Learning-enabled autonomous technology can also act as contingency management when used in safety applications, proactively addressing potential disruptions and unexpected aviation events. TRANSCEND was one of three projects chosen for the latest ULI awards. The others hail from Embry-Riddle Aeronautical University in Daytona Beach – researching continuously updating, self-diagnostic vehicle health management to enhance the safety and reliability of Advanced Air Mobility vehicles – and University of Colorado Boulder – investigating tools for understanding and leveraging the complex communications environment of collaborative, autonomous airspace systems. Florida Tech’s team includes nine faculty members from five universities: Penn State; North Carolina A&T State University; University of Florida; Stanford University; Santa Fe College. It also involves the companies Collins Aerospace in Cedar Rapids, Iowa and ResilienX of Syracuse, New York. Carroll and Bhattacharyya will also involve students throughout the project. Human operators are an essential component of aviation technology – they monitor independent software systems and associated data and intervene when those systems fail. They may include flight crew members, air traffic controllers, maintenance personnel or safety staff monitoring overall system safety. A challenge in implementing independent software is that engineers and operators have different interpretations of what makes a system “trustworthy,” Carroll and Bhattacharyya explained. Engineers who develop autonomous software measure trustworthiness by the system’s ability to perform as designed. Human operators, however, trust and rely on systems to perform as they expect – they want to feel comfortable relying on a system to make an aeronautical decision in flight, such as how to avoid a traffic conflict or a weather event. Sometimes, that reliance won’t align with design specifications. Equally important, operators also need to trust that the software will alert them when it needs a human to take over. This may happen if the algorithm driving the software encounters a scenario it wasn’t trained for. “We are looking at how we can integrate trust from different communities – from human factors, from formal methods, from autonomy, from AI…” Bhattacharyya said. “How do we convey assumptions for trust, from design time to operation, as the intelligent systems are being deployed, so that we can trust them and know when they’re going to fail, especially those that are learning-enabled, meaning they adapt based on machine learning algorithms?” With Bhattacharyya leading the engineering side and Carroll leading the human factors side, the research group will begin bridging the trust gap by integrating theories, principles, methods, measures, visualizations, explainability and practices from different domains – this will build the TRANSCEND framework. Then, they’ll test the framework using a diverse range of tools, flight simulators and intelligent decision-making to demonstrate trustworthiness in practice. This and other data will help them develop a safety case toolkit of guidelines for development processes, recommendations and suggested safety measures for engineers to reference when designing “trustworthy,” learning-enabled autonomous systems. Ultimately, Bhattacharyya and Carroll hope their toolkit will lay the groundwork for a future learning-enabled autonomous systems certification process. “The goal is to combine all our research capabilities and pull together a unified story that outputs unified products to the industry,” Carroll said. “We want products for the industry to utilize when implementing learning-enabled autonomy for more effective safety management systems.” The researchers also plan to use this toolkit to teach future engineers about the nuances of trust in the products they develop. Once developed, they will hold outreach events, such as lectures and camps, for STEM-minded students in the community. If you're interested in connecting with Meredith Carroll or Siddhartha Bhattacharyya - simply click on the expert's profile or contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology at adam@fit.edu to arrange an interview today.
Do We Need to Worry About Safety at the United States' Busiest Airports?
For the second time in two weeks, air traffic controllers directing planes into the Newark, New Jersey, airport briefly lost their radar. The outages have sparked travel chaos, with hundreds of flight delays and cancellations after the FAA slowed air traffic to ensure safety. The country's aging air traffic control system is in the spotlight. Media, politicians and the public are demanding both solutions for the system and answers on how safe traveling is at the moment. To provide insight, Florida Tech's Margaret Wallace is lending her expert opinion and perspective on the issue. Margaret Wallace is Assistant Professor of Aviation Management at Florida Institute of Technology, where she teaches Air Traffic Control and Airport Management courses. She spent over 15 years in the industry prior to teaching as an Airport Manager (4 years) at Ramstein Air Base in Germany and an Air Traffic Controller (10+ years) in the U.S. Air Force. “The recent communication failure at Newark Liberty International Airport has raised serious concerns about the safety and dependability of air traffic control systems in the United States. On April 28, 2025, the Newark air traffic facilities lost all radio communication with approximately 20 airplanes for up to 90 seconds due to an equipment breakdown. During the outage, pilots and controllers were unable to communicate. Controllers were unable to maintain aircraft separation during crucial flight phases, and pilots were unable to receive air traffic clearances and instructions. Situations like this, as well as aircraft incidents, bring stress and trauma to the controller's mental state. Most people cannot fathom how much mental stress the controller experiences in everyday job settings. Situations with defective equipment, combined with lengthy work hours due to a scarcity of controllers, appear to have taken their toll based on the fact that several controllers have taken leave for mental stress. This situation posed a safety risk to all planes and passengers. Fortunately, there were no incidents, and everyone remained safe. However, this demonstrated some of the flaws in the outdated air traffic system equipment. Sean Duffy, the new Transportation Secretary, has acknowledged the critical need to improve our current technology. While air travel is generally safe, our current administration must continue to prioritize the upgrade of air traffic systems and increasing the staffing in air traffic facilities. To ensure safety, I believe we should consider having airlines restrict the number of flights available and the Air Route Traffic Command Center to introduce delays to avoid overloading the system.” Margaret Wallace If you're interested in connecting with Margaret Wallace about the ongoing issues at airports across the country, let us help. Contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology, at adam@fit.edu to arrange an interview today.
Research Matters: Ultra-conductive molecule sets stage for post-silicon computing era
A research team has uncovered what it believes is “the world’s most electrically conductive organic molecule,” a discovery that opens new possibilities for building smaller, more powerful, and more energy-efficient computers. It could also allow computer chip manufacturers to eliminate their reliance on silicon and metal as conductors. “Molecules are nature’s tiniest, mightiest, and most configurable building blocks and can be engineered to build ultra-compact, ultra-efficient technology for everything from computers to quantum devices,” said Ignacio Franco, who was part of the research team that was led by scientists at the University of Miami. Their research was detailed in a paper published in the Journal of the American Chemical Society. The molecule, which is composed of chemical elements found in nature, including carbon, sulfur, and nitrogen, can carry electrical current over record-breaking distances without losing efficiency. Using molecular materials in electronic chips offers several advantages. They consume less power. They can be more easily customized than silicon. They are more environmentally friendly. And, perhaps most importantly to manufacturers, they are potentially cheaper to produce. “This molecular design overcomes many of the big issues that for decades have prevented the use of molecules in electronics,” Franco said. To learn more about this ground-breaking research, read about it at the University of Rochester News Center, and contact Franco at ignacio.franco@rochester.edu.
Hormone Supplementation in Rhesus Monkeys Points to Potential Autism Treatment
For years, Florida Tech’s Catherine Talbot, assistant professor of psychology, has worked to understand the sociality of male rhesus monkeys and how low-social monkeys can serve as a model for humans with autism. Her most recent findings show that replenishing a deficient hormone, vasopressin, helped the monkeys become more social without increasing their aggression – a discovery that could change autism treatment. Currently, the Centers for Disease Control and Prevention report that one in 36 children in the United States is affected by autism spectrum disorder (ASD). That’s an increase from one in 44 children reported in 2018. Two FDA-approved treatments currently exist, Talbot said, but they only address associated symptoms, not the root of ASD. The boost in both prevalence and awareness of the disorder prompts the following question: What is the cause? Some rhesus monkeys are naturally low-social, meaning they demonstrate poor social cognitive skills, while others are highly social. Their individual variation in sociality is comparable to how human sociality varies, ranging from people we consider social butterflies to those who are not interested in social interactions, similar to some people diagnosed with ASD, Talbot said. Her goal has been to understand how variations in biology and behavior influence social cognition. In the recent research paper published in the journal PNAS, “Nebulized vasopressin penetrates CSF [cerebral spinal fluid] and improves social cognition without inducing aggression in a rhesus monkey model of autism,” Talbot and researchers with Stanford, the University of California, Davis and the California National Primate Research Center explored vasopressin, a hormone that is known to contribute to mammalian social behavior, as a potential therapeutic treatment that may ultimately help people with autism better function in society. Previous work from this research group found that vasopressin levels are lower in their low-social rhesus monkey model, as well as in a select group of people with ASD. Previous studies testing vasopressin in rodents found that increased hormone levels caused more aggression. As a result, researchers warned against administering vasopressin as treatment, Talbot said. However, she argued that in those studies, vasopressin induced aggression in contexts where aggression is the socially appropriate response, such as guarding mates in their home territory, so the hormone may promote species-typical behavior. She also noted that the previous studies tested vasopressin in “neurotypical” rodents, as opposed to animals with low-social tendencies. “It may be that individuals with the lowest levels of vasopressin may benefit the most from it – that is the step forward toward precision medicine that we now need to study,” Talbot said. In her latest paper, Talbot and her co-authors tested how low-social monkeys, with low vasopressin levels and high autistic-like trait burden, responded to vasopressin supplementation to make up for their natural deficiency. They administered the hormone through a nebulizer, which the monkeys could opt into. For a few minutes each week, the monkeys voluntarily held their face up to a nebulizer to receive their dose while sipping white grape juice – a favorite among the monkeys, Talbot said. After administering the hormone and verifying that it increased vasopressin levels in the central nervous system, the researchers wanted to see how the monkeys responded to both affiliative and aggressive stimuli by showing them videos depicting these behaviors. They also compared their ability to recognize and remember new objects and faces, which is another important social skill. They found that normally low-social monkeys do not respond to social communication and were better at recognizing and remembering objects compared to faces, similar to some humans diagnosed with ASD. When the monkeys were given vasopressin, they began reciprocating affiliative, pro-social behaviors, but not aggression. It also improved their facial recognition memory, making it equivalent to their recognition memory of objects. In other words, vasopressin “rescued” low-social monkeys’ ability to respond prosocially to others and to remember new faces. The treatment was successful – vasopressin selectively improved the social cognition of these low-social monkeys. “It was really exciting to see this come to fruition after pouring so much work into this project and overcoming so many challenges,” Talbot said of her findings. One of Talbot’s co-authors has already begun translating this work to cohorts of autism patients. She expects more clinical trials to follow. In the immediate future, Talbot is examining how other, more complex social cognitive abilities like theory of mind – the ability to take the perspective of another – may differ in low-social monkeys compared to more social monkeys and how this relates to their underlying biology. Beyond that, Talbot hopes that they can target young monkeys who are “at-risk” of developing social deficits related to autism for vasopressin treatment to see if early intervention might help change their developmental trajectory and eventually translate this therapy to targeted human trials. Catherine F. Talbot is an Assistant Professor in the School of Psychology at Florida Tech and co-director of the Animal Cognitive Research Center at Brevard Zoo. Dr. Talbot joined Florida Tech from the Neuroscience and Behavior Unit at the California National Primate Research Center at the University of California, Davis, where she worked as a postdoc on a collaborative bio-behavioral project examining naturally occurring low-sociability in rhesus monkeys as a model for the core social deficits seen in people with autism spectrum disorder, specifically targeting the underlying mechanisms of social functioning. If you're interested in connecting with Catherine Talbot - simply contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology at adam@fit.edu to arrange an interview today.
Name: Adrian Peter Title: Associate professor of mathematics and systems engineering and electrical engineering and computer science (joint appointment); director, Center for Advanced Data Analytics and Systems (CADAS) Department/College: Department of Mathematics and Systems Engineering and Department of Electrical Engineering and Computer Science/College of Engineering and Science Current research funding: $2.19 million General research focus: Our Multi-domain, Multi-sensor, Cyber-physical Tactical Exploitation (M2CTE) project addresses a critical need for a robust analytic processing framework capable of supporting autonomous sensing and analytics on the edge – where devices and sensors collect data – with the ability to reach back to the cloud for more improvement. Adrian Peter's research interests are in applying advanced analytics (e.g. machine learning, statistical modeling, optimization and visualization) to solve large-scale computing problems across a variety of domain areas (signal processing, geospatial, environmental, sensor fusion and enterprise intelligence). Q: What has you excited about your current research? We have built our entire infrastructure with the immensely talented graduate and undergraduate students at Florida Tech. Their tireless efforts have led to us delivering practical and operational real-world, machine-learning solutions that make us among the global leaders in machine learning at the edge. Q: Why is it important to conduct research? The objective of all research is to advance the frontiers of knowledge in a specific discipline. In my research, we are continually pushing state-of-the-art distributed sensing and edge analytics. Our results have helped transition conceptual ideas and customer requirements into operational solutions that improve situational awareness at tactical edge. Adrian Peter is available to speak with media. Contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology, at adam@fit.edu to arrange an interview today.
The roots of scuba diving lie in exploration. But in an age when advanced instruments can drive research, too, why not stay dry on land? Researchers have used scuba diving as a tool for decades, but as technology evolves, remotely operated vehicles (ROVs) can aid, and sometimes replace, divers in the research process. Still, argues Stephen Wood, no existing tools have the full capability of a human. The professor of ocean engineering says the ability to grab items or quickly turn one’s head is difficult to replicate in an ROV. He also argues that although robots can collect and send data, the ability to assess and interpret an environment through a human lens is essential. “The human cannot leave” the research, Wood says. The American Academy of Underwater Sciences (AAUS) defines scientific diving as “diving performed solely as a necessary part of a scientific, research, or educational activity by employees whose sole purpose for diving is to perform scientific research tasks.” With more than 140 organizational members, AAUS supports diving as a research tool and protects scientific divers’ health and safety. Researchers and students must obtain an AAUS certification, which Florida Tech offers, before undertaking a scientific dive. At Florida Tech, any diver who plans to use compressed air or air blends for activity involving teaching or research must comply with AAUS. Robert van Woesik, professor of marine sciences, studies the dynamics of coral reefs worldwide. He and his students scuba dive to examine and photograph coral assemblages, then return with information they can use to predict the impact of local and global disturbances, recovery from disturbances and future growth. The ability to personally identify different species underwater is crucial to understanding coral reef dynamics. He says that without scuba, the necessary training to develop that skill falls away. “I think it’s still worthwhile knowing the species composition of a reef underwater instead of just saying, ‘Okay, we don’t need scuba divers anymore. We just need photographs and ROVs,’” van Woesik says. He learns the most when he can descend to a reef and see the seascape himself. “I think there’s something to be said to just go in the water and ask some questions,” van Woesik says. “That’s the valuable part of being able to scuba dive, getting amongst it to experience the reef, in tandem with analyzing photographs from around the world on the computer.” Assistant professor of marine sciences Austin Fox says in his research in the Indian River Lagoon, diving is essential for operating—and sometimes finding—instruments. “We spend a lot of time trying to figure out ways to do this stuff without diving…but there’s just no replacement for it.” Austin fox, Assistant professor of marine sciences Scientific diving has taken Florida Tech researchers across the globe, from the murky floor of the Indian River Lagoon to the depths of Antarctica’s McMurdo Sound. Rich Aronson, department head and professor of ocean engineering and marine sciences, studies coral reefs in the tropics and subtidal communities in Antarctica. In 1997, he had the opportunity to visit the McMurdo Station to study invertebrate ecology—specifically, who eats what and whether they leave traces of their predatory activity on the shells of their prey. There, he completed 27 dives of up to 130 feet deep. Some were done through ice-cracks in remote areas, he recalls, whereas others were from holes drilled through 10 feet of sea-ice. He noted that the time to prepare for these dives was extensive—two 30-minute dives took eight hours—and they weren’t without risk. “That was the first and only time I’ve dived under the ice. It’s dangerous because there’s a ceiling above you,” Aronson says. “You jump in the hole and try not to screw it up because if you screw it up, you’re dead.” Though risky, Aronson says scuba diving was crucial to the research. He argues that neither ROVs nor oceanographic sensors could have collected or sampled organisms at fine scales, run transects and made behavioral observations like a human could. Additionally, he says his observations at depth, such as the “sting of subzero water” on his face and “the slowness of reaction of the animals living down there,” are what later inspired a project of his combining deep-sea oceanography and paleontology to project the future of Antarctic seafloor communities in a rapidly warming world. “Science is a lot more subjective than you might think, and feeling the environment helps you understand it.” Richard Aronson, department head and professor of marine sciences The risky nature of scuba diving is why programs like AAUS exist: to standardize safe and responsible diving practices for conducting scientific research. Divers are at risk for a number of pressure-related injuries, such as decompression sickness: a condition in which residual nitrogen can create bubbles in the blood and body tissue upon ascent if the diver rises to the surface too fast. To reduce their risk, divers must plan and track how deep they are going, the time at which they are that depth (and subsequent depths) and how long they need to wait before changing depth. Technology has also evolved since the beginning of scuba to support divers’ safety further. Digital dive computers, developed in the 1980s, help divers estimate how long they can stay at their current depth while underwater (among other things). Additionally, Enriched Air Nitrox (Nitrox) is a gas mixture that contains a higher percentage of oxygen than standard air. Divers who use Nitrox can extend their time at depth and reduce their risk of decompression sickness because of its reduced nitrogen pressure. Van Woesik predicts that dive technology will keep evolving. He imagines there could soon be a system that allows divers to upload data at depth, and a system that aids in species identification without having to decipher an image at the surface. He also believes that innovators will keep working to reduce hazards and prioritize safety, because despite the risks, divers will always get in the water. “Hopefully that technology will get better so we can go deeper, safer, and so we can stay down a bit longer to explore and further understand the natural wonders of the oceans,” van Woesik says. If you're interested in connecting with Stephen Wood, Austin Fox, Richard Aronson or Robert van Woesik - simply contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology at adam@fit.edu to arrange an interview today.
Name: Linxia Gu Title: Professor of biomedical engineering and science, department head Department/college: Department of Biomedical Engineering and Science/College of Engineering and Science Current research funding: $5 million as co-PI of ASCEND General research focus: My research focuses on developing physically based computational models and conducting mechanical testing to investigate how mechanical stimuli influence cell and tissue responses, providing new insights into the interplay between mechanics and biology. Dr. Gu’s research expertise lies in the biomechanics and biomaterials using both computational and experimental methods. The specific application areas include vascular mechanics and indirect traumatic injury to the brain and eye. Her group is particularly interested in developing multi-scale multi-physics models to study and exploit tissue responses and cellular mechanotransduction, and to gain new mechanistic insights into the interplay of mechanics and human body. The multidisciplinary effort has resulted in > 130 journal papers, and $11 million research funding from NIH, NSF, ARO, and NASA. Q: What has you excited about your current research? The opportunity to bridge the gap between mechanics and biology drives my research. By integrating computational models with experimental data, we are uncovering how mechanical forces influence tissue and cellular responses, particularly in the areas of vascular stenting and traumatic injury to the eye and brain. This had the potential to drive breakthroughs in understanding, prevention and treatment. Q: Why is it important to conduct research? Conducting research is vital for addressing pressing societal challenges and advancing our understanding of complex biomedical systems. Linxia Gu is available to speak with media. Contact Adam Lowenstein, Director of Media Communications at Florida Institute of Technology, at adam@fit.edu to arrange an interview today.
BATON ROUGE – Since the Big Bang, the early universe had hydrogen, helium, and a scant amount of lithium. Later, some heavier elements, including iron, were forged in stars. But one of the biggest mysteries in astrophysics is: How did the first elements heavier than iron, such as gold, get created and distributed throughout the universe? A new answer has come from an unexpected place – magnetars. Neutron stars are the collapsed cores of stars that have exploded. They are so dense that one teaspoon of neutron star material, on Earth, would weigh as much as a billion tons. A magnetar is a neutron star with an extremely powerful magnetic field. On rare occasions, magnetars release an enormous amount of high-energy radiation when they undergo “starquakes,” which, like earthquakes, fracture the neutron star’s crust. Starquakes may also be associated with powerful bursts of radiation called magnetar giant flares, which can even affect Earth’s atmosphere. Only three magnetar giant flares have been observed in the Milky Way and the nearby Large Magellanic Cloud, and seven from other nearby galaxies. Astrophysicist Eric Burns and his team of researchers at Louisiana State University in Baton Rouge study magnetars extensively through the observation of gamma-rays. These are the most energetic photons, most famous for turning Bruce Banner into the Incredible Hulk. Burns joined with researchers at Columbia University and other institutions to see if we could use gamma-rays to understand if magnetar giant flares forge the heaviest elements, and unexpectedly found the smoking-gun signature in decades-old data. The study, led by Anirudh Patel, a doctoral student at Columbia University in New York, is published in The Astrophysical Journal Letters. “It’s answering one of the questions of the century and solving a mystery using archival data that people had just forgotten about, demonstrating something that occurred when the Universe was younger,” said Burns. “Giant flares should occur just after the first stars died, meaning we have identified what could be the origin of the first gold in the universe.” How could gold be made at a magnetar? Patel and colleagues, including his advisor Brian Metzger, Professor at Columbia University and senior research scientist at the Flatiron Institute in New York, have been thinking about how radiation from giant flares could correspond to heavy elements forming there. This would happen through a “rapid process” of neutrons forging lighter atomic nuclei into heavier ones. Protons define the element’s identity on the periodic table: hydrogen has 1 proton, helium has 2, lithium has 3, and so on. Atoms also have neutrons which do not affect identity, but do add mass. Sometimes when an atom captures an extra neutron the atom becomes unstable and a nuclear decay process happens that converts a neutron into a proton, moving the atom forward on the periodic table. This is how, for example, a gold atom could take on an extra neutron and then transform into mercury. In the unique environment of a disrupted neutron star, in which the density of neutrons is extremely high, something even stranger happens: single atoms can rapidly capture so many neutrons that they undergo multiple decays, leading to the creation of a much heavier element like uranium. When astronomers observed the collision of two neutron stars in 2017 using NASA telescopes and the gravitational wave observatory LIGO, they confirmed that this event could have created gold, platinum, and other heavy elements. “LIGO tells us there was a merger of compact objects, and Fermi tells us there was a short gamma-ray burst. Together, we know that what we observed was the merging of two neutron stars, dramatically confirming the relationship,” said Burns. But neutron star mergers happen too late in the universe’s history to explain the earliest gold and other heavy elements. Finding secrets in old data At first, Metzger and colleagues thought that the easiest signature to study from the creation and distribution of heavy elements at a magnetar would appear in the visible and ultraviolet light, and published their predictions. But Burns in Louisiana wondered if there could be a gamma ray signal bright enough to be detected, too. He asked Metzger and Patel to work out what that signal could look like. Burns looked up the gamma ray data from the last giant flare that was observed, which was in December 2004. He realized that while scientists had explained the beginning of the outburst, they had also identified a smaller signal from the magnetar, in data from ESA (European Space Agency)’s INTEGRAL, a retired mission with NASA contributions. “It was noted at the time, but nobody had any conception of what it could be,” Burns said. Metzger remembers that Burns thought he and Patel were “pulling his leg” because the prediction from their team’s model so closely matched the mystery signal in the 2004 data. In other words, the gamma ray signal detected over 20 years ago corresponded to what thought it should look like when heavy elements are created and then distributed in a magnetar giant flare. "This is my favorite discovery I've contributed to,” said Burns. “My colleagues found this signal in the past, but nobody knew what it could be at the time. Once these models were ready, everything fit like a perfect puzzle, which is extremely rare in science." Researchers supported their conclusion using data from two NASA heliophysics missions: the retired RHESSI (Reuven Ramaty High Energy Solar Spectroscopic Imager) and the ongoing NASA Wind satellite, which had also observed the magnetar giant flare. Other collaborators on the new study included Jared Goldberg at the Flatiron Institute. Next steps in the magnetar gold rush Patel’s study estimates that magnetar giant flares could contribute about 10% of the total abundance of elements heavier than iron in the galaxy. Since magnetars existed relatively early in the history of the universe, the first gold could have been created this way. LSU PhD candidate Aaron Trigg, a NASA FINESST (Future Investigators in NASA Earth and Space Science and Technology) fellow, who works with Burns, is responsible for finding more magnetar giant flares to study. “These are gargantuan outbursts of energy from the strongest magnets in the Universe, which are powerful enough to affect Earth’s atmosphere,” said Burns. Trigg’s work will help us better understand these sources.” NASA’s forthcoming COSI (Compton Spectrometer and Imager) mission can follow up on these results. COSI, a wide-field gamma ray telescope, is expected to launch in 2027 and will study energetic phenomena in the cosmos, such as magnetar giant flares. COSI will be able to identify individual elements created in these events, providing a new advancement in understanding the origin of the elements. LSU is one of the lead science institutes for COSI. Burns and LSU Assistant Professor Michela Negro have key responsibilities in the mission, and Trigg is working through how best to study giant flares with COSI. These LSU astrophysicists will be growing their research group as they approach launch in 2027. “I have so many questions about the cosmos and our place in it,” said Trigg. “This research allows me to explore those questions and share the answers with the world.”
An Expert Guide to the Papacy and Pope Francis
The death of Pope Francis marks a pivotal moment for the Catholic Church, ending a papacy that redefined the Church's relationship with the modern world. As the College of Cardinals prepares to gather in conclave, Catholics across the globe are closely watching to see whether the next pontiff will build upon Francis' legacy or chart a new course. The following experts are available to provide insight into a range of related topics, including Pope Francis' enduring impact and what lies ahead for the world's 1.4 billion Catholics: Massimo Faggioli, PhD Professor, Theology and Religious Studies Dr. Massimo Faggioli is a world-renowned expert on the history and administrative inner workings of the Catholic Church, with specific expertise in the papacy, Vatican II, the Roman Curia, liturgical reform, new Catholic movements and Catholicism and global politics. As quoted on NPR: "Historically, we see in different conclaves a certain swinging of the pendulum. What the conclave and the next pope cannot do is to ignore and deny the changing features of global Catholicism, which is much less European, much less white, less North American and more Global South..." Kevin Hughes, PhD Chair, Theology and Religious Studies Dr. Kevin Hughes is a leading historical theologian, offering insights into the life, legacy and impact of Pope Francis. He can also speak to the significance of the pope in Catholicism and the influence of his teachings on the global Catholic Church. As quoted on Scripps News: "[Pope Francis' selection] was really the Church extending beyond the limits of its European imagination. His Latin American identity was really crucial to embracing a new moment within the Church and opening the door in so many ways, and I think he bore witness to that throughout his papacy." Jaisy Joseph, PhD Assistant Professor, Systematic and Constructive Theology Dr. Jaisy Joseph is a trained ecclesiologist, able to address a wide range of topics relating to the papacy, conclave process and Catholic Church. Previously, she has commented on the Church's presence in Asia and the Global South, offering expert commentary on its growth, challenges and shifting influence. As quoted by ABC News Digital: "[The election of someone from the Global South would be] a move in that direction of how to be a global church. That move from a Eurocentric church to a truly global church—I think that's what Francis really inaugurated." Patrick Brennan, JD Professor of Law; John F. Scarpa Chair in Catholic Legal Studies Professor Patrick Brennan is an expert on the conclave process and the main rules that govern it. He can also speak to topics such as the contemporary and historical importance of secrecy in the conclave, what the cardinals may be looking for in the next pope and the factors that cause similarities and differences from one conclave to the next. As quoted on Fox 29's Good Day Philadelphia: "The purpose of the general congregation is for the cardinals, who don't know each other in some cases, to get to know each other better as they learn about the current state of the Church and together decide on the needs of the Church and priorities for the new pontificate." Brett Grainger, ThD Associate Professor, Study of Spirituality and American Religious History Dr. Brett Grainger is a go-to source for discussions of the changing face and role of modern spirituality in America. He serves as an expert on contemporary religious trends and can also speak to the broader public reaction to Pope Francis' passing, especially outside of the Catholic faith. As quoted by Courthouse News Service: "People are disaffiliating from a tradition—that doesn't necessarily mean in fact that they don't believe in God anymore...What's more important is 'Is this giving me life? Is this making my life more meaningful? Is this giving me the kind of energy and purpose that I'm looking for?' That's where religion is going." Michael Moreland, JD, PhD Professor of Law and Religion; Director, Eleanor H. McCullen Center for Law, Religion and Public Policy Dr. Michael Moreland is a renowned scholar of constitutional law, religious freedom, public policy and ethics. He can provide expert commentary on items related to the Catholic right and the state of religious politics in the United States. As featured on NBC News Digital: Michael Moreland said the mass appeal of "Conclave" captured how, even in a secular modern age, there is still pervasive intrigue around "the ancient rituals of the Catholic Church." "The significance of the theological and spiritual aspects of Catholicism and this process of electing a pope was kind of reduced into partisan politics," he said. Ilia Delio, OSF, PhD Josephine C. Connelly Endowed Chair in Christian Theology Sr. Ilia Delio addresses topics in her work such as theology and evolution, technology and human becoming and understandings of Catholicity in a world of complexity. She can provide expert insight into Laudato si', Pope Francis' position on the environment, the relationship between science and religion and integral ecology. As featured in the National Catholic Reporter: "We are clearly an Earth in crisis," with a reversal necessary to secure a sustainable future, said Ilia Delio... Delio posed a series of questions: about the relationship between religion and science; what Laudato si', and Christianity more broadly, can offer ecological movements; and whether the concept of kinship or creation as family might better reflect humanity's place within nature than "care for creation." To speak with any of these media experts, please contact mediaexperts@villanova.edu.
