Featured Post from University of Delaware

Researcher develops microrobots to battle cancer with unique precision

May 1, 2024

4 min

Magnetic robots that can target cancer cells are nothing new. But the patented microrobots developed by the University of Delaware's Sambeeta Das can be guided with a magnetic field to deliver medication to cells – or to destroy infectious cells, such as cancer – inside the body.

To mark the launch of National Inventors Month, Das, assistant professor of mechanical engineering, shared her journey toward invention.

Q: Tell us about your patented invention on microrobots for cancer research. What problem were you trying to solve?

Das: One of the biggest issues with cancer research is the ability to target cancer cells without harming healthy cells. Cancer cells are sneaky, and they have evolved ways of hiding from the body’s immune cells.

A big part of our research focuses on targeting, specifically precision targeting. We want to be able to target a single cell in a mass of cells, whether that is a single cell in a mass of cancer cells or whether it is a single abnormal cell surrounded by healthy cells. To do this, we use magnetic microrobots that can be driven inside the body by magnetic fields to a particular cell location. Magnetic fields are biocompatible, meaning they are not harmful to biological tissues, and our microrobots are very small, around 20 microns, which is about the size of a single bacteria cell. We can load our microrobots with various drugs and modify their surface in such a way that when the robots come in contact with the cells we are targeting, they can kill the target cell or perform some other function.

Q: How is this solution unique?

Das: Other people have made magnetic microrobots, but our system is unique since it allows us to do automatic targeting with a lot of precision. For example, a person operating our microrobots can just point to a cell and our system will drive the microrobot there. Additionally, the instrument we have made and patented is an all-in-one portable device that can be used anywhere. We don’t need a separate microscope, camera or software, it is all built in and very user friendly. Anyone can use it. This makes it super portable, which means quick solutions for health practitioners. In addition, poor and resource challenged areas can also be accessed with this portable solution.

Q: What drives you toward invention?

Das: I like to solve problems, and I like seeing something come together from nothing. I am very interested in problems that affect human health and longevity, particularly those that affect the common person.

Q: How do you approach solving a problem, and whose support has been critical along the way?

Das: One thing I have realized is that it is imperative to ask the right question to solve a problem. You must really get to the core of the issue. The second thing is to always keep the end user in mind. So, it’s kind of a two-pronged approach—looking from both ends of the problem.

For support, I would say my team members and my collaborators. Their support has been invaluable in helping me solve the problems that I want to solve. In fact, my graduate students keep a running list of crazy ideas that they have come up with. It helps us look at problems in a unique way and come up with innovative solutions.

Q: Not every invention makes it. How do you deal with failure?

Das: The way that I start working on a problem is to assume that whatever we do, we are going to fail. I always tell my students that their first couple of experiments or designs will always fail. But failure is essential because it will teach you what not to do. And knowing what not to do is sometimes the critical part of the invention process. The failures inform us about the ways of not doing something which means now there is another way of doing something.

Q: What is the best advice you’ve ever received?

Das: The best career advice I’ve ever received is that there is always another way. If you run into roadblocks there is always another answer, there is always another opportunity. So we just need to keep going and trying new and crazy ideas.

Q: How are inventive minds created – is it innate or can it be developed? How do you encourage innovation among your students?

Das: That’s an interesting question and honestly, I am not sure. I do believe in what Edison said, “Genius is 1% inspiration and 99% perspiration.” He is a known inventor, so I would go with his interpretation on this.

As for my students, I give them lots of freedom. I think freedom is essential in encouraging innovation. The freedom to come up with crazy ideas without anyone saying that won't work and the freedom to fail—multiple times.

Das is available for interviews to talk about her microrobots and other projects at UD. To reach her, visit her profile and click the "contact" button.

Connect with:

Sambeeta Das

Assistant Professor of Mechanical Engineering

Prof. Das’s research spans robotics, autonomous systems, physics, organic chemistry and materials engineering.

Biomechanical EngineeringClean Energy & EnvironmentMaterials EngineeringBiomechanicsFluid Mechanics

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Mar 30, 2026

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Inside the Italian art heist: Experts explain the global fight to protect cultural heritage

A lightning-fast art heist in Italy has reignited global concerns about museum security and the protection of cultural heritage. As investigators search for stolen works by some of history’s most celebrated artists, University of Delaware experts are available to help journalists unpack the broader implications. Earlier this month, thieves executed a highly coordinated robbery at the Magnani-Rocca Foundation, stealing paintings by Pierre-Auguste Renoir, Paul Cézanne and Henri Matisse in a matter of minutes. Authorities say the operation was swift, targeted and likely premeditated – highlighting the evolving sophistication of art crime. The theft adds to a growing pattern of high-value art crimes across Europe, raising urgent questions about how institutions safeguard collections and what happens when culturally significant works disappear into illicit markets. UD experts are available to provide context, analysis and on-the-record commentary: Debra Hess Norris Chair, Department of Art Conservation A globally recognized leader in art conservation, Norris specializes in the protection, preservation and recovery of cultural heritage. She can speak to: How museums assess and mitigate security risks What happens after a major art theft The challenges of recovering stolen works in international markets How conservation science supports authentication and repatriation Jessica Horton Associate Professor of Art History Horton’s research examines global art histories and the movement of cultural objects across borders. She can discuss: Why stolen artworks matter beyond their monetary value Cultural ownership, repatriation and ethical considerations How art theft disrupts historical narratives and public access The broader cultural consequences of illicit art trafficking While headlines focus on the dramatic nature of art heists, the deeper story is about the fragility of cultural heritage – and the global effort required to protect it. To speak with Norris or Horton, email mediarelations@udel.edu.

Apr 2, 2026

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Robotics help solve deep Sea Mysteries

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Mar 18, 2026

2 min

Delaware emerges as a test bed for the future of AI in health care

Delaware is positioning itself as a “living lab” where academia, health systems and government collaborate to shape the future of artificial-intelligence-enabled health care. The latest issue of the Delaware Journal of Public Health, guest edited by University of Delaware computer scientists Weisong Shi and Yixiang Deng, brings together 16 articles from researchers, clinicians, policymakers and industry leaders examining how AI and big data are reshaping health care. The issue, debuting this month, balances Delaware-specific topics with broader perspectives, highlighting three levels of impact: what Delaware can expect in the coming years, what other states can learn from Delaware’s approach and how UD research is advancing AI for health through collaborations. “At UD, we don’t work in isolation. We’re working closely with health care systems so that innovation happens together from the beginning,” says Shi, Alumni Distinguished Professor and Chair of UD’s Department of Computer and Information Sciences. Highlights from the issue include: The nation’s first nursing fellowship in robotics – ChristianaCare, Delaware’s largest health system, created an eight-month fellowship to train bedside nurses to conduct applied robotics research. Nurses who completed the program reported higher job satisfaction, improved well-being and greater professional confidence, suggesting programs like this may help retain the bedside workforce and reduce nationwide staffing shortages. Wheelchairs that navigate hospitals on their own – UD researchers developed a prototype autonomous wheelchair that combines onboard sensors and computing with software that interprets spoken directions from users, a step toward moving beyond systems that only work in controlled environments. To operate effectively in health care settings, the researchers say, wheelchairs must be able to navigate crowded hallways, interact with doors and elevators and recover safely when sensors or navigation systems fail. Smarter insulin dosing for type 1 diabetes – Researchers are developing computer models to predict blood sugar (glucose) trends and guide insulin delivery, but must address issues such as noisy data, reliable real-time prediction and the computational limits of wearable devices. A review by UD researchers and colleagues emphasizes the importance of interdisciplinary collaboration, standardized datasets, advances in computational infrastructure and clinical validation to turn these models into practical tools that improve patient care. To interview Shi about AI in health care and the new DJPH issue, click his profile or email MediaRelations@udel.edu. ABOUT WEISONG SHI Weisong Shi is an Alumni Distinguished Professor and Chair of the Department of Computer and Information Sciences at the University of Delaware. He leads the Connected and Autonomous Research Laboratory. He is an internationally renowned expert in edge computing, autonomous driving and connected health. His pioneering paper, “Edge Computing: Vision and Challenges,” has been cited over 10,000 times.