Today, Lyle Brunhofer (EAS’14, GEng’14) advises companies on digital transformations, applying the skills he learned at Penn Engineering to modernize firms’ understanding of customers in industries as diverse as pharmaceuticals and consumer products.
He also helps run Penn Engineering’s annual Senior Design Project Competition, which recruits dozens of alumni to evaluate seniors’ year-long capstone projects. As the Vice President and Senior Design Chair of the Engineering Alumni Society, Brunhofer works hand-in-hand with Bradley Richards (C’92, LPS’17), Director of Alumni Relations, to coordinate the year-long competition and multi-day concluding extravaganza — part Shark Tank, part science competition — in May.
While at Penn Engineering, Brunhofer’s own Senior Design team developed assistive technology to help those with physical disabilities interact with their environment using modular, 3D printed switches. Assist3D partnered with the HMS School for Children with Cerebral Palsy, located in West Philadelphia, to ensure that products met users’ needs. “We set out to create ability switches that would be affordable, customizable and simple, in contrast to the ability switches available on the market,” Brunhofer recalls. After graduation, the team provided the finished products to the HMS School.
As Brunhofer sees it, Senior Design instills skills far beyond the scope of typical engineering courses. “As a student, I felt that Senior Design was an extremely challenging, but rewarding experience,” he says. “It was also unlike any assignment we had been given previously.”
In a Q&A with Penn Engineering Today, Brunhofer discussed what motivates him to stay involved with Penn Engineering as an alumnus and the impact of participating in Senior Design.
How did you get involved as an alumni volunteer with Senior Design?
Senior Design was such an incredible part of my senior year and Penn Engineering experience that when I joined the Board of the Engineering Alumni Society, I knew immediately that I would focus on helping the event continue.
What do you feel makes Senior Design unique?
The mentorship. Students get to work with industry experts, faculty members, alumni and other professionals who help students hone their technical and soft skills, and foster networking opportunities for future careers.
Lyle Brunhofer is Business Integration Manager at Accenture. He graduated with Bachelor’s and Master’s degrees in Bioengineering from the University of Pennsylvania in 2014.
Academia is a long journey of specialization and behind any professor’s CV are long hours of research and study. While the path can be direct for some, for others there’s a pivot, a moment or experience that changes the course of that journey.
Penn Today spoke with four professors whose academic paths diverged, to learn about the trajectory of their interdisciplinary work. Vijay Balasubramanian traverses the boundaries of physics and neuroscience. Tukufu Zuberi is a demographer-turned-curator. Brittany Watson integrates education, research, and veterinary medicine. Amy Hillier began her career studying historical mortgage redlining and moved into supporting trans youth.
Vijay Balasubramanian The Cathy and Marc Lasry Professor of Physics in the School of Arts & Sciences
Wandering through Kolkata’s markets in India stimulates the mind. Hawkers’ cries pass through the inner ear as electrical signals; the pungent, earthy smell of turmeric enters the brain through olfactory sensory neurons. In 1976, a 7-year-old Vijay Balasubramanian had his own market revelation through a bookseller’s portico, where the cover of a slim volume showed a man peering through a microscope lens and a smattering of white paint scattered like stars across the firmament of man and machine.
“What is a scientist?” the book asked, running through a series of exciting adventure shots: archeologic discovery, venom extraction, missile control. In that moment, Balasubramanian knew he would be a scientist. It looked, he says, “amazingly cool.”
When he arrived at the Massachusetts Institute of Technology, Balasubramanian wanted to study the fundamental laws of nature. “So that’s physics,” he says. While earning his doctoral degree at Princeton University, a mentor suggested Balasubramanian read papers in the burgeoning field of neuroscience. It immediately resonated. “Oh my god, this stuff is so cool,” Balasubramanian thought. “But the final year of a Ph.D. is not the time to switch.”
He earned his degree and took a position as a junior fellow of the Harvard Society of Fellows. During the day, he worked on string theory and the information loss paradox for black holes. But in the evening, he would moonlight in a neuroscience lab.
As a young theoretical physicist at Penn, Balasubramanian met Peter Sterling. A former Freedom Rider and professor of neuroscience at the Perelman School of Medicine, Sterling was “a true intellectual,” Balasubramanian says. He knew everything, was interested in everything, and would talk with anybody.
The pair wrote a series of papers together regarding information processing and transmission. “He’s so quick and so much fun and so lively,” Sterling says of Balasubramanian. “He’s fearless; there’s nothing he won’t try.”
While in Cairo with wife Heather J. Sharkey, professor of modern Middle Eastern and North African history at Penn, Balasubramanian prepared a neuroscience grant and submitted it to the National Science Foundation, “sort of on a whim,” he says. “I put it in from an internet café on an island in the middle of the Nile.” He got the grant and started a research group.
After that, Balasubramanian says, “I was off and running.”
“I was certainly told,” Balasubramanian says of his work in neuroscience, “do not do this before tenure.” But, if he waited, “then I’d be too set my ways,” he says. “I just wouldn’t know enough; it would be too hard to learn; I wouldn’t have the time.”
Younger scientists often ask him about exploring multiple fields, Balasubramanian says. The advice he offers is to “have a central line where you have credibility, where you’ve established that you’re really, really good at what you do, and you can be trusted.” That gives you more latitude, he says.
After that, it’s just sheer discipline. “You’re going to have to wake up earlier than everybody else. You’re going to have to work longer days,” he says. “Otherwise, you know, everybody else is working hard too, and you’ll never be able to achieve the level of expertise and knowledge to be able to do things at that world-class level.”
Balasubramanian wants to see more interdisciplinary collaboration. “Each field trains its students with a certain body of techniques that has been found historically useful in that field,’ he says. “Very often, those techniques also have uses elsewhere, but they don’t know to apply it.”
Traversing borders can be helpful in producing new insights, Balasubramanian says. You can ask questions that people in the field won’t. You might experiment with new ideas or put two disjointed ideas together, he says. “If you’re coming from outside, you have the leeway to do all kinds of silly things. Sometimes, they’re not silly.”
Why not ask new questions and propose new answers? In the end, the data will tell you what’s true. “It gives me comfort to know how things tick.”
This post is adapted from a longer story in Penn Today. Read the full story here.
Balasubramanian is Cathy and Marc Lasry Professor in the Department of Physics and Astronomy in the Penn School of Arts and Sciences and is a member of the Penn Bioengineering Graduate Group. Read more stories featuring his research here.
Biofilms—structured communities of microorganisms that create a protective matrix shielding them from external threats, including antibiotics—are responsible for about 80% of human infections and present a significant challenge in medical treatments, often resisting conventional methods.
In a Q&A with Penn Today, Hyun (Michel) Koo of the School of Dental Medicine and Edward Steager of the School of Engineering and Applied Science at Penn discuss an innovative approach they’ve partnered on: the use of small-scale robotics, microrobots, to offer a promising solution to tackle these persistent infections, bringing new capabilities and precision to the field of biomedical engineering.
Q: What is the motivation behind opting for tiny robots to tackle infections?
Koo: Treating biofilms is a broad yet unresolved biomedical problem, and conversely, the strategies for tackling biofilms are limited for a number of reasons. For instance, biofilms typically occur on surfaces that can be tricky to reach, like between the teeth in the oral cavity, the respiratory tract, or even within catheters and implants, so treatments for these are usually restricted to antibiotics (or antimicrobials) and other physical methods reliant on mechanical disruption. However, this touches on the problem of antimicrobial resistance: targeting specific microorganisms present in these structures is difficult, so antibiotics often fail to reach and penetrate the biofilm’s protective layers, leading to persistent infections and increased risk of antibiotic resistance.
We needed a way to circumvent these constraints, so Ed and I teamed up in 2017 to develop new, more precise and effective approaches that leverage the engineers’ ability to generate solutions that we, the clinicians and life science researchers, identify.
Hyun (Michel) Koo is a professor in the Department of Orthodontics and in the divisions of Pediatric Dentistry and Community Oral Health and the co-founder of the Center for Innovation & Precision Dentistry in the School of Dental Medicine at the University of Pennsylvania. He is a member of the Penn Bioengineering Graduate Group.
Edward Steager is a senior research investigator in Penn’s School of Engineering and Applied Science.
For most of modern medicine, cancer drugs have been developed the same way: by designing molecules to treat diseased cells. With the advent of immunotherapy, that changed. For the first time, scientists engineered patients’ own immune systems to recognize and attack diseased cells.
One of the best examples of this pioneering type of medicine is CAR T cell therapy. Invented in the Perelman School of Medicine by Carl June, the Richard W. Vague Professor in Immunotherapy, CAR T cell therapy works by collecting T cells from a patient, modifying those cells in the lab so that they are designed to destroy cancerous cells, and reinfusing them into the patient. June’s research led to the first FDA approval for this type of therapy, in 2017. Six different CAR T cell therapies are now approved to treat various types of blood cancers. Carl June, at the flash mob celebration of the FDA approval of the CAR T cell therapy he developed, in August 2017. (Image: Courtesy of Penn Medicine Magazine)
CAR T cell therapy holds the potential to help millions more patients—if it can be successfully translated to other conditions. June and colleagues, including Daniel Baker, a fourth-year doctoral student in the Cell and Molecular Biology department, discuss this potential in a perspective published in Nature.
In the piece, June and Baker highlight other diseases that CAR T cell therapy could be effective.
“CAR T cell therapy has been remarkably successful for blood cancers like leukemias and lymphomas. There’s a lot of work happening here at Penn and elsewhere to push it to other blood cancers and to earlier stage disease, so patients don’t have to go through chemo first,” June says. “Another big priority is patients with solid tumors because they make up the vast majority of cancer patients. Beyond cancer, we’re seeing early signs that CAR T cell therapy could work in autoimmune diseases, like lupus.”
As for which diseases to pursue as for possible future treatment, June says, “essentially it boils down to two questions: Can we identify a population of cells that are bad? And can we target them specifically? Whether that’s asthma or chronic diseases or lupus, if you can find a bad population of cells and get rid of them, then CAR T cells could be therapeutic in that context.”
“What’s exciting is it’s not just theoretical at this point. There have been clinical reports in other autoimmune diseases, including myasthenia gravis and inflammatory myopathy,” Baker says. “But we are seeing early evidence that CAR T cell therapy will be successful beyond cancer. And it’s really opening the minds of people in the field to think about how else we could use CAR T. For example, there’s some pioneering work at Penn from the Epstein lab for heart failure. The idea is that you could use CAR T cells to get rid of fibrotic tissue after a cardiac injury, and potentially restore the damage following a heart attack.”
Baker adds, “there’s no question that over the last decade, CAR T cell therapy has revolutionized cancer. I’m hoping to play a role in bringing these next generation therapies to patients and make a real impact over the next decade. I think there’s potential for cell therapy to be a new pillar of medicine at large, and not just a new pillar of oncology.”
Cosette Tomita, a master’s student in Bioengineering, spoke with Penn Engineering Graduate Admissions about her research in cellular therapy and her path to Penn Engineering.
“What were you doing before you came to Penn Engineering?
After college I wanted to get some industry experience before going to graduate school, so I spent a year working for a pharmaceutical company in New Jersey. I learned a lot—but mostly I learned that I wanted to go back into academia. So I was looking for a more research-oriented position to boost my graduate school applications, and I found a position at Penn’s cyclotron facility. Shortly after that, I applied to the master’s program. I’m still working at the cyclotron, so I’m doing the program part time.
How has your experience in the program been so far?
I love the research I’m doing here. I love the collaboration we have and the fact that I’m able to work with whoever I want to. And I can only say good things about my PI, Robert Mach. He’s a very busy man, but he makes time for his people. And he recognizes when somebody has a lot on their plate and he will go to bat for that person.
What’s your research all about?
The focus of my PI’s lab is on neurodegenerative diseases and opiate use, so we’re looking to make imaging agents and antagonists that can help with the opioid crisis.
For my project, I wanted to look at treating neurodegenerative disease from the perspective of cellular therapy. My PI doesn’t have that expertise, so when I came to him with this idea, he said I should talk to Mark Sellmyer in the bioengineering department. He does a lot of cellular therapies, cell engineering, protein engineering and things of that nature. So his lab is more biological.
I don’t have a grant for my research, so my advisors are supporting it out of their own pockets. They could have said, no, you need to work on this project that’s already going on in the lab. But they gave me the intellectual freedom to do what I wanted to do.”
Could the universe be twice as old as current estimates put forward? Rajendra Gupta of the University of Ottawa recently published a paper suggesting just that. Gupta claims the universe may be around 26.7 billion years rather than the commonly accepted 13.8 billion. The news has generated many headlines as well as criticism from astronomers and the larger scientific community.
Penn Today met with professors Vijay Balasubramanian and Mark Devlin to discuss Gupta’s findings and better understand the rationale of these claims and how they fit in the broader context of problems astronomers are attempting to solve.
How do we know how old the universe actually is?
Balasubramanian: The universe is often reported to be 13.8 billion years old, but, truth be told, this is an amalgamation of various measurements that factor in different kinds of data involving the apparent ages of ‘stuff’ in the universe.
This stuff includes observable or ordinary matter like you, me, galaxies far and near, stars, radiation, and the planets, then dark matter—the sort of matter that doesn’t interact with light and which makes up about 27% of the universe—and finally, dark energy, which makes up a massive chunk of the universe, around 68%, and is what we believe is causing the universe to expand.
And so, we take as much information as we can about the stuff and build what we call a consensus model of the universe, essentially a line of best fit. We call the model the Lambda Cold Dark Matter (ΛCDM).
Lambda represents the cosmological constant, which is linked to dark energy, namely how it drives the expansion of the universe according to Einstein’s theory of general relativity. In this framework, how matter and energy behave in the universe determines the geometry of spacetime, which in turn influences how matter and energy move throughout the cosmos. Including this cosmological constant, Lambda, allows for an explanation of a universe that expands at an accelerating rate, which is consistent with our observations.
Now, the Cold Dark Matter part represents a hypothetical form of dark matter. ‘Dark’ here means that it neither interacts with nor emits light, so it’s very hard to detect. ‘Cold’ refers to the fact that its particles move slowly because when things cool down their components move less, whereas when they heat up the components get excited and move around more relative to the speed of light.
So, when you consider the early formation of the universe, this ‘slowness’ influences the formation of structures in the universe like galaxies and clusters of galaxies, in that smaller structures like the galaxies form before the larger ones, the clusters.
Devlin: And then taking a step back, the way cosmology works and pieces how old things are is that we look at the way the universe looks today, how all the structures are arranged within it, and we compare it to how it used to be with a set of cosmological parameters like Cosmic Microwave Background (CMB) radiation, the afterglow of the Big Bang, and the oldest known source of electromagnetic radiation, or light. We also refer to it as the baby picture of the universe because it offers us a glimpse of what it looked like at 380,000 years old, long before stars and galaxies were formed.
And what we know about the physical nature of the universe from the CMB is that it was something really smooth, dense, and hot. And as it continued to expand and cool, the density started to vary, and these variations became the seeds for the formation of cosmic structures.
The denser regions of the universe began to collapse under their own gravity, forming the first stars, galaxies, and clusters of galaxies. So, this is why, when we look at the universe today, we see this massive cosmic web of galaxies and clusters separated by vast voids. This process of structure formation is still ongoing.
And, so, the ΛCDM model suggests that the primary driver of this structure formation was dark matter, which exerts gravity and which began to clump together soon after the Big Bang. These clumps of dark matter attracted the ordinary matter, forming the seeds of galaxies and larger cosmic structures.
So, with models like the ΛCDM and the knowledge of how fast light travels, we can add bits of information, or parameters, and we have from things like the CMB and other sources of light in our universe, like the ones we get from other distant galaxies, and we see this roadmap for the universe that gives us it’s likely age. Which we think is somewhere in the ballpark of 13.8 billion years.
Vijay Balasubramanian is the Cathy and Marc Lasry Professor in the Department of Physics and Astronomy in the School of Arts & Sciences at the University of Pennsylvania. He is a member of the Penn Bioengineering Graduate Group.
Mark Devlin is the Reese W. Flower Professor of Astronomy and Astrophysics in the Department of Physics and Astronomy in the School of Arts & Sciences at Penn.
Brain technology offers all kinds of exciting possibilities — from treating conditions like epilepsy or depression, to simply maximizing brain health. But medical ethicists are concerned about potential dangers and privacy concerns. Roy Hamilton, Professor of Neurology in the Perelman School of Medicine, Director of the Penn Brain Science, Translation, Innovation, and Modulation (BrainSTIM) Center, and member of the Penn Bioengineering Graduate Group, spoke with WHYY about how brain stimulation is being used.
There was a time before time when the universe was tiny, dense, and hot. In this world, time didn’t even exist. Space didn’t exist. That’s what current theories about the Big Bang posit, says Vijay Balasubramanian, the Cathy and Marc Lasry Professor of Physics. But what does this mean? What did the beginning of the universe look like? “I don’t know, maybe there was a timeless, spaceless soup,” Balasubramanian says. When we try to describe the beginning of everything, “our words fail us,” he says.
Yet, for thousands of years, humans have been trying to do just that. One attempt came 75 years ago from physicists George Gamow and Ralph Alpher. In a paper published on April 1, 1948, Alpher and Gamow imagined the universe starts in a hot, dense state that cools as it expands. After some time, they argued, there should have been a gas of neutrons, protons, electrons, and neutrinos reacting with each other and congealing into atomic nuclei as the universe aged and cooled. As the universe changed, so did the rates of decay and the ratios of protons to neutrons. Alpher and Gamow were able to mathematically calculate how this process might have occurred.
Now known as the alpha-beta-gamma theory, the paper predicted the surprisingly large fraction of helium and hydrogen in the universe. (By weight, hydrogen comprises 74% of nuclear matter, helium 24%, and heavier elements less than 1%.)
The findings of Gamow and Alpher hold up today, Balasubramanian says, part of an increasingly complex picture of matter, time and space. Penn Today spoke with Balasubramanian about the paper, the Big Bang, and the origin of the universe.
Balasubramanian is Cathy and Marc Lasry Professor in the Department of Physics and Astronomy in the Penn School of Arts and Sciences and a member of the Penn Bioengineering Graduate Group.
Fourth year undergraduate Jerry Gao (BE ’23) is the latest student featured in 34th Street Magazine’s “Ego of the Week” series. Jerry, who hails from Coppell, TX, majors in Bioengineering with a minor in Asian American Studies. In addition to his academic studies, he is passionate about education and literacy, working with The Signal, the Asian Pacific American Leadership Initiative, and the Penn Reading Initiative. In this Q&A, he discusses the sense of community that brought him to Penn, the love of cooking (and gifting food to his friends) that powers his @gaos_chows Instagram account, and his experience as a student and now TA in Penn Bioengineering’s “BE MAD” lab class:
“Now that you’re on your way to graduating, what have been your favorite classes or experiences in Bioengineering or Asian American Studies?
‘In terms of bioengineering, there’s definitely a clear favorite that I have. It’s actually the class I’m a TA for right now. It’s “Bioengineering Modeling, Analysis, and Design,” and it’s basically the lab that all junior bioengineers take. There’s one particular lab we do in the class that always catches everyone’s attention; it’s called the cockroach lab. I think it’s one of the biggest reasons why people want to study bioengineering at Penn in particular.
It’s a segue into prosthetics and different medical devices that can help restore people’s limb functions. We order hundreds of cockroaches and then we put them in a little bit of an ice bath to anesthetize. We amputate their legs, which will essentially serve as our prosthetics, and then implant metal electrodes into two different spots of the leg. Then, we go into our computer program and type different lines of code that can help replicate different signal waves to move the legs. If you submit a wave with a particular frequency and particular amplitude, it’ll cause a leg to move in one direction, and if you do a different combination of the amplitude and frequency, it’ll cause it to move in the other direction. The next task is to trace the end of the leg and try to choreograph the leg to spell the letters B and E for bioengineering. It’s so fun to be able to see what combination of leg movements in the servo motor can form the backbone of the B for example, what can form the three lines of the E. I would say that’s probably my favorite moment in the bioengineering department.'”
Sevile Mannickarottu, Director of Educational Laboratories in the Department of Bioengineering (BE), was interviewed in a recent episode of Shifting Schools, a weekly podcast that hosts educators and thought-leaders in conversations about the latest trends in education and EdTech. Mannickarottu, a Penn Engineering alumnus, runs the George H. Stephenson Foundation Educational Laboratory & Bio-MakerSpace, also known as the Penn BE Labs. In addition to being the primary teaching lab for Penn Bioengineering, the Penn BE Labs has grown into “the world’s only interdisciplinary Bio-MakerSpace.”
MakerSpaces–collaborative, educational work environments–have recently grown in popularity. Penn BE Labs distinguishes itself as a Bio-MakerSpace, embracing the interdisciplinary character of bioengineering by offering itself freely as a space for both academic and personal projects. It is stocked with tools ranging from 3D printers, laser cutters, and electrical equipment, including supplies to support work in molecular biology, physiology, chemistry, and microfluidics.
In the episode, hosts Tricia Friedman and Jeff Utecht talk with Mannickarottu about the organic process by which the Penn BE Labs evolved from a standard teaching space for undergraduate engineering laboratory courses into a student-driven hub of creativity and entrepreneurial spirit that is open to the entire Penn community regardless of discipline or major.
Mannickarottu and his team have found that “creativity needs to let go of control – that’s when fun things happen.” As the lab staff and faculty started to allow more creative freedom in the undergraduate bioengineers’ education, the requests for more supplies started pouring in and the lab’s activities and resources grew. “Honestly, we’re driven almost entirely by student requests and student demands,” says Mannickarottu. So when a student requested a sewing machine for a project? They went out and bought one, adding to their ever-growing stockpile of tools. Over time, more and more diverse projects have emerged from the BE Labs, many of them going on to win awards and grow beyond Penn’s campus as independent startups.
In case this sounds out of reach for smaller institutions, Mannickarottu shares words of encouragement. “The biggest thing,” he says, “is to allow for creativity on the part of the students.” A lab or program can start their own MakerSpace surprisingly inexpensively and build their inventory over time. His number one recommendation for those looking to replicate the success of Penn BE Labs is to allow students freedom to innovate, and administrators will be drawn to invest in the MakerSpace to allow for even more opportunities for them to create and thrive.
To help others get started, the Penn BE Labs staff have put a wide range of resources online, including extensive video and photo archives, FAQ’s, tutorials, information about student projects and startups, and equipment inventories. A 2019 post written for the BE Blog by BE alumna Sophie Burkholder (BSE ‘20 & MSE ‘21) gives the reader tips on “how to build your own MakerSpace for under $1500.”
Though it may currently be “the world’s only interdisciplinary Bio-MakerSpace,” the greatest legacy of the Penn BE Labs would be to be known as the first of many.
Listen to “The legacy of your lab” in Shifting Schools to learn more about the Penn BE Labs and for tips on starting your own MakerSpace.