GUEST EPISODE 03

Cell Viability Testing with Cyto-Clear Photopolymer Resin

2nd June, 2025

Hemdeep Patel , Robin Boshoven , Dr. Veronika Magdanz and Noah Franco

What Makes a 3D Material Safe for Living Cells?

In this engaging 3-part series, Hemdeep and Robin sit down with Dr. Veronika Magdanz and Noah Franco at the University of Waterloo to explore a big question: how can a 3D material support living cells, and why does it matter? Their conversation centers around Cyto-Clear Photopolymer Resin, a breakthrough new 3D Material in microfluidics research, known for one powerful feature: over 90% cell viability. Here’s what to expect in each episode:

 

Part 1
Hear how the Magdanz Lab is pushing boundaries—from bio-inspired microrobots to the future of 3D bioprinting. Learn about the exciting (and sometimes tricky) path of working at the cutting edge of medical micro-bots.

 

Part 2
From Lab Coats to Startups: Veronika shares her journey bridging the gap between academia and industry through her work with CADworks3D. Noah discusses how he applies an entrepreneurial mindset to scientific research. Hemdeep opens up about business failures and how that has reshaped his approach to innovation. Together, they reveal how real-world collaboration drives meaningful breakthroughs.

 

Part 3
Go behind the scenes with CADworks3D as they share the journey of creating Cyto-Clear—from the early, failed prototypes to their current, biocompatible resin that’s now driving innovation in diagnostics, fertility testing, and point-of-care tools.

Whether you’re a scientist, a tech enthusiast, or just curious about the future of life sciences, this series has something for you. Tune in and explore how micro-scale innovation is creating macro-scale impact—one cell at a time.

Podcast Summary

This three-part episode features Dr. Veronika Magdanz (Assistant Professor, Systems Design Engineering) and Noah Franco (MASc candidate) of the University of Waterloo’s Magdanz Lab, covering their microrobotics research and their multi-year collaboration with CADWorks3D validating Cyto-Clear, a biocompatible, optically clear photopolymer resin for 3D printing.

 

The Magdanz Lab works across several microrobotics streams: sperm-driven microrobots (rooted in Magdanz’s PhD work in Dresden), synthetic wireless microrobots for removing occlusions like blood clots and kidney stones, sperm diagnostics, and 3D-bioprinted organ models combining cells with bioscaffolds for in vitro drug testing. Franco’s thesis focuses on a non-surgical treatment pathway for gallstone disease, developing drug-loaded microrobots that could be guided into the gallbladder to dissolve stones without surgery. Gallstone disease affects roughly one in three women and one in five men, but current treatment, cholecystectomy, remains the only established option once symptoms appear.

 

The collaboration with CADWorks3D began through a Mitacs industry-partnership grant after Magdanz joined Waterloo in 2022. Cyto-Clear had existed in an unvalidated form for roughly three years before the partnership prompted formal cytotoxicity and biocompatibility testing across five cell lines, split into suspension cells (sperm and monocytes) and adherent cells (the MES-SA uterine line, an endothelial line, and keratinocytes). The team developed two testing approaches: an on-chip assay for suspension cells, printing microfluidic channels, incubating cells inside them, and running live/dead fluorescent staining directly on-chip; and a disc-based assay for adherent cells, printing discs to fit into standard 24-well plates and assessing viability with live/dead staining and XTT assays. Notably, the resin’s optical clarity allowed direct fluorescence imaging inside printed channels without interfering with microscope laser wavelengths. A key refinement, discovered during post-processing, was that curing in deionized water for an extended period substantially improved biocompatibility.

 

Iteration cycles were fast: print settings stabilized quickly, chips printed in under an hour, and testing discs in about ten minutes, allowing rapid validation across formulation versions. The researchers see broad potential applications, including point-of-care and home diagnostics such as sperm fertility testing and rapid blood-compatibility assays like the monocyte monolayer test currently used before transfusions. As Magdanz reflected on the research mindset underlying the work: “It’s just a result we should take seriously and learn from… this isn’t your self-worth you’re dealing with.”

Available on :

"We've nearly burnt down my mom's home. We nearly burnt down our office that we used to be at in the city itself. when I mean burnt it down, we almost burnt it down."​

Transcripts

Part 1 Transcript

From Sperm Robots to Gallstones Part 1

Hemdeep: Welcome to Big Ideas in Microscale, the podcast where we explore groundbreaking research happening at the microscale, where micro innovations make a big impact. We’re excited to showcase the incredible work being done by our users from around the world who are pushing the boundaries of microfluidics, lab-on-a-chip, organ-on-a-chip, and beyond. Through these conversations, we hope to learn from their experiences, uncover their insights, and bring their big ideas to a wider audience. So whether you’re in a lab, on the go, or just curious about the future of microtechnology, join us as we dive into big ideas at microscale.

 

Thank you very much, and welcome back to Big Ideas in Microscale. I’m really keen to introduce our next two guests. In 2023, we had the opportunity to connect with a team out of the University of Waterloo, led by Veronika Magdanz, and in the time since, we’ve learned so much; they do some amazing things there. They’ve also been the ones who validated our new material that just came out, Cyto-Clear, and I think they’ve got a story really worth sharing. So here we have Veronika and Noah Franco.

My name is Hemdeep Patel, co-founder of Creative CADWorks, CADWorks 3D, and ResinWorks 3D. My co-host is Robin.

 

Robin: Yes, I’m Robin, part of the marketing team, with them for three years now. I didn’t realize it was back in 2023 when you both started working together; Waterloo and CADWorks 3D. It’s been a while.

 

Hemdeep: It has been a while, and there have been a number of ups and downs. I think we’re going to go through that journey, the one Veronika and Noah have had, over the last two years and even before that. So let’s quickly bring on Veronika and Noah. Hi, guys, how are you?

 

Veronika: Good, thanks, very good. Thank you, Hemdeep, and it’s been great working with you guys. Just to introduce myself quickly: I’m a biotechnologist, I studied in Germany, that’s where I grew up. During my undergrad, I had the chance to go on exchange, and I came to the University of Waterloo to study chemical engineering. As part of that exchange, I had to do a research internship, and I got to go to Vancouver to work at UBC in a microfluidics lab. That was my first time working at the microscale, and it absolutely hooked me. I really enjoyed working in microfluidics, but also just learning how to fabricate things at the microscale and push certain applications forward, especially in healthcare.

 

After that internship, I returned to Germany to finish my degree, and after a few years working in different fields, I did my PhD in microrobotics. I joined a group in Dresden, Germany, one of the few groups worldwide developing wireless nano- or micro-scale devices for drug delivery, to make treatments like cancer therapy, and other drug delivery, much more targeted and localized.

 

After my PhD, I did a postdoc in Dresden as well, on sperm biology. After that, I went to Barcelona for two years, to work at the Institute for Bioengineering of Catalonia, and that’s when I first started doing more bioprinting and 3D printing. Then in 2022, I received the position here at the University of Waterloo as assistant professor, and joined that fall.

 

As a way to build my network here in North America, I was looking for industry collaborations, since that’s a great way to fund research, but also to build a network between industry and research. At the time I didn’t know any companies in the area, and I was talking to a friend in Barcelona, who said, “I think we just bought a printer from a company in your area.” I said, “What’s that company’s name?” She passed me the contact for Creative CADWorks, and I reached out to Hemdeep, and he wrote back right away. That was the start of our connection, which led into a first Mitacs project, and now we’re on to a second, more extensive one. That’s the beginning of the collaboration.

 

Hemdeep: When you were in BC, you said you were working with a team there. Which team was it, and what kind of work were they doing?

 

Veronika: That was the Carl Hansen lab, at the time. I don’t know if you’re familiar with them. What we were trying to do was run reverse-transcription PCR on chip, amplifying DNA, with everything on chip: from placing the blood cell there, all the way to extracting RNA from those antibody-producing cells. Not much worked at the time; I was there for three, four months, trying to get PCR to work, and I think it didn’t succeed until the very last week. Despite that being pretty painful, with a lot of failed trials, I just loved working in research; the environment was great. Carl Hansen was a young assistant professor at the time, and I think he later started a big company that had a significant role in antibody production during COVID, actually, as a major therapy for patients who were really suffering. I believe he’s no longer a professor at the university; he’s moved into industry completely.

 

He was just an amazing supervisor, taking me on without knowing me at all, a stranger, a German undergrad, and letting me work in his lab for the summer. That was really amazing. At that time, we weren’t doing 3D printing; we were doing photolithography, so we had to go into the clean room, and go through all these multiple steps: making the mask, the photoresist coating, several more steps, to get the chips at the end. It was painful, but a good experience working in the clean room. I think now 3D printing has changed that field so, so much.

 

Noah: How long would you say it took to make one trip through the clean room?

 

Veronika: I think it was at least one full day, probably a nine-hour day. Then the next day you’d do the liftoffs and put everything back together. It was one of those chips with multiple layers, since you had pump layers with airflow going through, and other layers with fluids going through, and they had to be aligned to the micrometer. You’d sit under the microscope trying to align these different PDMS layers. That’s crazy, but I think we can move well beyond that now.

 

Hemdeep: Yes, we can. Our second guest is Noah Franco; Noah, you jumped in right there before I even got the chance to introduce you. So here you are; why don’t you give us a quick history of what you’ve been doing up until now?

 

Noah: Of course, thanks for having me on. I’m a master’s student at the University of Waterloo, doing systems engineering at the Magdanz Lab. I come from a fairly non-traditional background heading into engineering, since I did my undergrad at Waterloo in the science and business program, kind of a mix of biotechnology and business internships. I always seemed to drift toward research, though, so during my undergrad I got to delve into all types of R&D. My first co-op was in Toronto, working on clinical trials for Canadian-made COVID vaccines, and testing the first-in-human trials for something like Medicago. That got me interested in med school, and in research generally.

 

To follow that direction, I went to Ottawa next, where I looked at virus-based COVID vaccines, and also cancer vaccines; we did some cool work there, and I got my first publication out of that internship. From there, I wanted to get more into engineering, just to see what it was about, even though I wasn’t in an engineering program; I wanted to get the best of both worlds and experience everything in one path.

 

So I worked at a really cool company called Tersa Earth. What they do is bioremediation: pioneering a process to take acidic rock drainage from mining waste and process it, to extract leftover heavy metals for a higher yield, while also purifying the waste. I was basically the genetic engineer there, looking at modifying different types of bacteria for use in microbial fuel cells to process the waste. My last co-op was a bit more business-focused: I did business and R&D for a company called Allora, which was in Waterloo’s Velocity incubator at the time.

 

From there, finishing my undergrad, I joined Veronika’s microrobotics lab, since I was really interested in how I could spend my master’s using microrobotics to tackle a problem in healthcare, something that’s always been really interesting to me. It’s been really cool getting more and more into 3D printing, first through design teams, then through working with Creative CADWorks to make these really cool resins.

 

Robin: You mentioned Veronika’s lab, the Magdanz Lab. When did that actually start up, and beyond microrobotics, what other research interests does the lab have?

 

Noah: Yeah, I think Veronika can definitely speak to that; we’ve got some cool projects.

 

Veronika: When I look at the website, I’ve had it for probably six years now, so well before I came to Waterloo, though the projects have evolved a bit. At first, I worked mostly on sperm diagnostics and sperm-based microrobots, which might sound a little strange, but it goes back to my PhD on sperm-driven microrobots for applications in the reproductive tract. That’s still one of our lines of work, but we’ve now expanded into synthetic wireless microrobots too, really man-made, fabricated small-scale robots. One stream looks at removal of occlusions in the body: removing blood clots, removing kidney stones. Noah will talk about another application he’s exploring, drug or cell delivery, as a therapeutic application. We also still have work on sperm diagnostics with new techniques, and one stream that’s more on the 3D printing and bioprinting side, especially creating sophisticated in vitro organ models; the idea being that we can eventually print a small organ combining cells with a bioscaffold, to use as an in vitro model for drug testing or other biological testing. Those are the main topics we’re working on right now.

 

Noah: I can jump in and talk about my thesis. There’s a lot in there, but I started it about eight months ago, back in September. What we’re working on is developing a non-surgical treatment pathway for gallstone disease using microrobotics. What we want to do is develop robots that can be loaded with drugs and non-surgically guided into the gallbladder, then dissolve and break down the gallstones.

 

A bit of background on gallstone disease: it’s actually quite common. One in three women will be affected by it at some point in their lives, and one in five men. It’s more prevalent in women. The problem with gallstone disease is you don’t know you have it until it’s too late; you really only get symptoms once the stones are big enough to block your bile duct. Once it does become too late, the only solution doctors have used for the past 30 years is to surgically remove the gallbladder, a cholecystectomy, which is one of the most common surgeries done in North America.

 

Robin: I actually have a friend who had it last year.

 

Hemdeep: It’s so funny you say that, because my mom had it a few years back, and I kid you not, for nearly four months she just had this ache in her stomach. When she finally went to the doctor, he came out and said your mom is basically made of bricks; she should have been in agony. It had gotten so bad.

 

Once that happens, I find a lot of people have had that experience, where the onset of pain is almost immediate at that point, and excruciating.

 

Robin: I wish these microbots were already done; a friend of mine also had it last year, right around the time she was giving birth. I can’t imagine the pain she must have gone through.

 

Noah: From the people I’ve talked to, the consensus is people always want another option, because there are consequences to having it removed; you have to change your diet too. Hemdeep, did your mom notice any lifestyle or diet changes after?

 

Hemdeep: Honestly, nothing’s really changed for her. I don’t even think the doctor’s list of dos and don’ts stuck around past the moment she left the hospital. She wasn’t concerned in the world; she was just glad she could start traveling again. That’s really her big passion in life.

 

I had one question for both of you: it seems like you’ve gone through all these points in your lives, joining different teams, new labs, new projects, which requires a lot of learning, since it’s a brand new topic each time. How much of that was just the ability to absorb new topics, versus some unique precursor that let you jump from subject to subject, pull old experience into a new topic, and still get on with it?

 

Noah: From my perspective going into all these different co-ops, I don’t think I had anything special, other than a passion and a willingness to learn new things, which drives you to learn more than you thought you signed up for. That’s what I tried to do during each internship: pick something I wasn’t comfortable with, something I wanted to learn rather than something I already had the skills for, to make myself a bit uncomfortable and force myself to learn.

 

Veronika: We constantly learn new things, and that’s what I love about research. For example, I didn’t know anything about gallstone disease going into this, and basically threw it at Noah and said, “Do you want to look into this and see if it makes sense?” I think what I’d hate most is having a job where I did the same thing over and over, even doing today what I did yesterday. Every day is completely new, trying new things, constant learning. It’s really satisfying, being able to explore like that.

Failure, Risk, and Finding a Collaborator Part 2

Robin: Last week, we had the pleasure of speaking with Veronika Magdanz and Noah Franco from the University of Waterloo. They shared their journey into the world of microrobotics, and gave us a look at their groundbreaking research, from non-surgical gallstone treatments to sperm-based robots and 3D-bioprinted organ models. If you missed that conversation, go back and give it a listen.

 

Hemdeep: This week, we’re back with Veronika and Noah to explore the challenges of balancing academia and industry, the value of failure, and how that all fed into the validation process for Cyto-Clear photopolymer resin, our newest 3D material here at CADWorks 3D, formulated for broad-spectrum cell viability and biocompatibility. A conversation about curiosity, persistence, and the real-world process behind breakthrough ideas.

 

When you’re learning a brand new topic, or even creating one out of nothing, there’s this level of expectation of success, but also an overwhelming expectation that none of it’s going to work. How do you guys manage that? In our case, you invest months, years, into a topic, and it can all be for nothing. How do you manage that?

 

Veronika: For me, the strategy has always been to never focus on just one thing. I usually have two, three, four, maybe ten different things going on, and you know most of them probably won’t work out the way you hope. But then you live off the little successes, the one project that does work out, and it’s so exciting. When you try something in the lab that’s never been tried before, and it works, that’s amazing; I think we live off those moments.

 

On the other hand, we do draw experience across projects; despite having so many different ones, we have a common theme, especially across the microrobot research, where it’s all about making therapies more targeted and more actively delivered. That’s true for gallstone treatment, but also blood clot removal, kidney stone removal, even antibiotic delivery. Conventional treatment, or cancer treatment too, often means drugs going into your whole body, since you take them by IV or orally, affecting the whole body. The idea is to make these therapies much more targeted and successful, and get rid of the side effects. That’s one of the common themes for the microrobots.

 

The other important thing for us is going into completely new fields; that’s the exciting part. We’re not competing with twenty other groups around the world doing the same thing; Noah’s probably the only person working on exactly what he’s working on. That also makes it a bit easier to be successful, since whatever you get out is a result, something worth sharing.

 

Hemdeep: Considering you’re at the starting phase of your life in academia, how do you manage expectations, and this level of expected failure?

 

Noah: It’s definitely scary, especially when you come up with something you’re really passionate about, and that’s the thing you want to see work. You have to balance that against the fact that it’s very entrepreneurial; when you build a company and it succeeds, that’s the best thing ever, but they almost always fail. I try to balance my expectations with the fact that it’s okay if things don’t work, but at the very minimum, we can build a framework for future researchers to build on. At the very minimum, I want to introduce something new and unique that can benefit the field. It’s definitely scary, but it’s the little steps you have to use as milestones to keep yourself going.

 

Hemdeep: What characteristics, would you say, let you do that? In business, you evaluate risk in a particular way; you’re either risk-averse or you’re okay with it. What are the traits in academia that make a successful researcher, versus someone who might just want to keep doing the exact same thing day in, day out?

 

Noah: You definitely need a bit of an entrepreneurial mindset to want to go and pursue something new. That’s important if you’re pursuing your own project, but you don’t have to; plenty of people just do their master’s or PhD and go into industry work. But having a project, and an entrepreneurial mindset, lets you take it further, to the point where it’s more than just a degree; it’s something you can call your own, something that could have real impact.

 

Veronika: I think it’s also curiosity, which you really have to embrace and live out. That’s where I usually see students succeed too: when they’re really curious, they own the topic, and just go at it, super proactive. Go to the lab, try things out. Don’t sit and read for three weeks, thinking about everything that could go wrong; just go try it and learn on your own. That’s where I see a lot of success come from, and failures too, of course, but failures are never the fault of a person. It’s a failed experiment; it has nothing to do with me or Noah failing personally. It’s just a result we should take seriously and learn from. I think it’s important to distance yourself from the results a bit, in the sense that this isn’t your self-worth you’re dealing with.

 

One other thing, maybe a bit different from what Hemdeep mentioned: when you do your risk analysis, we have the privilege, and I really see it as a privilege, of knowing I’ll still have my job tomorrow if my experiment fails today. Whereas in a company, that’s not a given; if you’re not selling, if things aren’t going well, that really affects your company and your people. For me and Noah, this is a privilege, being able to work off research funds, to have that freedom and curiosity, and follow it. I think it’s really an honor, and that’s how I see research.

 

Noah: Good you brought that up. On the flip side, Hemdeep, what’s your take on failure within the industry side of research?

 

Hemdeep: Industry, the number of failures I’ve had, epic failures; we’re talking setbacks of four or five years. That kind of failure, we’ve done it. My brother and I have co-founded things together, and looking back now, in our 50s, we can map out where our shortcomings were: we were navel-gazing, we weren’t really strategizing for epic failure, and we had a lot of attributes that were genuinely wrong that we had to modify.

 

Over the last five or six years, we’ve gotten a lot better at understanding what we have, what we don’t have, where our gaps are. One thing I tell our team, well, it used to be every day, now it’s more like once a week or once a month, is that we sit down and talk about our blind spots. It’s a moment of reflecting: yes, we may be doing X, Y, and Z well, but there’s a spot we just don’t see, where mistakes are compounding on each other, and by the time you find it, it may be too late. Can we identify that early? That’s one of the big things we work on.

 

In terms of risk, though, we’re very poor at evaluating it; we tend to run head first into things. Even during our interaction over the last two years, I’m sure the two of you, and even before that, Lydia, probably scratched your heads, wondering what we were doing and why we were doing it that way. It’s almost part of our fabric. I do think it’s a fault, but we haven’t killed ourselves. We’ve nearly burnt down my mom’s house. We nearly burnt down our old office in the city; when I say almost burnt it down, I mean there was an actual fire, involving alcohol.

 

Noah: 3D printer.

 

Hemdeep: There was a material my brother was working on developing, and he said, “This thing has got amazing properties,” and, you know how we have to use IPA to clean our models. We were at a large workbench right beside a wall, and there was a very thin layer of IPA on the bench that we hadn’t noticed. My brother wanted to take a model and light it, just to show it off, not realizing a drop of IPA had landed on the bench. We didn’t notice anything until a blue flame shot straight up the wall, and we were just like, no.

 

Robin: Was that at your mother’s house, or the office?

 

Hemdeep: No, this was at the office. At my mother’s house, we burnt her kitchen. I was thirteen, my brother was nine; we burnt her kitchen while she was away at work. I kid you not, we burnt the ceiling, the stove hood, and then, like a typical thirteen- and nine-year-old, we invited all our friends over with paint and brushes and repainted my mom’s ceiling.

 

Robin: Can stress cause gallstones? Because I think we might know where hers came from.

 

Hemdeep: It was the best thing. My mom came home that afternoon; we did it all in one afternoon. We burnt the kitchen around noon, and by three o’clock we had the place painted. It was summer, and my mom’s coming home to a house full of paint fumes; we’d opened all the windows, had fans going. She walks up and says, “What happened? Why are all the doors open?” We say, “Don’t worry about it, mom, we were just airing the place out.” She says, “Why?” We say, “Oh, we decided to paint this area.” She says, “Why would you do that?” It didn’t even dawn on her that her sons would have pulled something like this. She goes upstairs to her bedroom and notices soot had fallen on her bed, that’s how much we’d lit the place up. She came down and just had it; she chased us down. It was epic. And that’s the start of a great relationship, right? That’s how you find your co-founder. That’s the story of my life.

 

Veronika: You’ve been in this business a while now; how many years have you been working with your brother?

 

Hemdeep: Oh my god, I think forever and a day. I joined my dad’s business at 23; my brother joined at 27. So we’re now closing in on thirty years together.

 

Veronika: Amazing. Did you ever have a moment where you nearly folded it, said, “That’s it, we’re done”?

 

Hemdeep: I don’t know about that. I think we were just wired to always ask, “Okay, what do we do now?” We’ve had major inflection points; the one in 2009, when my dad passed away, was a really big one; it’s when we reorganized ourselves, and that’s also when we took up 3D printing, self-taught ourselves CAD design. It was a big reset for us. When we looked at it, we thought, “Okay, what do we do now?” I don’t recall a single moment where either of us said, “Maybe we need to part ways.” We’ve had plenty of moments where we didn’t agree on strategy, but we really started designing our roles around each other: my brother is our CTO, he manages the technology side, the photopolymer manufacturing and formulation, all of that is his. I handle the business side; I understand what’s happening on the technology side reasonably well, but that’s not what wakes me up in the morning. What wakes me up is trying to distill complicated processes or technologies into a format that can be understood, and get people excited, by a wide range of people.

 

When I connected with your team two years ago, it was purely on that, “Oh wow, this might be interesting.” We’d done something similar before, a collaboration with U of T in 2018, and one with the Majid team from UTS Sydney around 2018 to 2019. We really enjoyed those collaborations. It’s funny, when our collaboration with you happened, I’d approached a couple of teams before that, and they sort of looked at us like, “What do you guys even do?” We explained what we wanted to do, but there wasn’t a keen curiosity or interest. We figured, okay, maybe it’s not the right time yet. Then you guys came along, and it turned into a really good opportunity, and a good relationship that we’ve built over the last couple of years.

 

Robin: How did that actually happen? How did you find out about CADWorks 3D? Were you searching for something specific?

 

Veronika: I started as assistant professor here at Waterloo in fall 2022, a big change for me, coming from Barcelona and my postdoc at IBEC. I had to start building my network in North America, and one of the big funding opportunities in Canada is collaboration with industry, through programs like Mitacs. I was looking to build a network with companies also interested in doing research together, and there was a Mitacs call supporting collaborations in biotech, between academic research and industry.

 

So I was looking for local companies, but I really didn’t know the area at all. I was talking to my colleague in Barcelona, and she said, “I think we just bought a printer from a company that’s really close by.” I said, “Really, what’s their name?” It was Creative CADWorks, and she passed me the contact. I emailed Hemdeep, and he wrote back right away, said sure, let’s talk. I was really surprised by that level of interest, since it’s not a given; industry often runs differently, with different interests. But when we were brainstorming, there were a few topics right away where we could see common interest. So we started our first Mitacs collaboration, and now we’re on to our second, which is expanding. It’s been really great.

 

Robin: When the collaboration first started, how far along was Cyto-Clear in development?

 

Hemdeep: It was on the shelf at that point; it had been sitting there for about three years. We had it running, and were happy with it, but there were some real shortfalls, and we wanted to get it validated. There were a lot of steps still left to do, and honestly it wasn’t really on our radar at all; there was a sense of, “we should get to it eventually.”

 

But when that email came in, it’s strange; Veronika mentioned it started with a conversation she’d already had in Barcelona, but I’d also gotten an email from a student in the UK who said, “I’m going to be at Waterloo, would I be able to intern with you through the Waterloo industry program?” That’s where our connection happened. At that point, it dawned on us: what about that clear material we’d been kicking around for three years? Could that be something we bring to the table, push through, and get validated, really understand what we had on hand? That was the starting point for us. We were really excited when that email came in, since up until then, as I said, we’d had a couple of conversations with teams across Canada without much reciprocal curiosity. So it felt like, okay, maybe we’d have to wait longer for the right partnership.

Building Cyto-Clear Part 3

Robin: Over the past couple of weeks, we’ve had the pleasure of speaking with Veronika Magdanz and Noah Franco from the University of Waterloo, hearing about their groundbreaking research, from non-surgical gallstone treatment to sperm-based robots and 3D-bioprinted organ models, and about the importance of collaboration between academia and industry that led to the validation of Cyto-Clear photopolymer resin.

 

Hemdeep: This week, we’re diving into the details of developing Cyto-Clear. Veronika and Noah share how multiple versions of the resin were tested, refined, and improved over the course of the collaboration, including testing on microfluidic chips and its potential in medical diagnostics and point-of-care devices.

 

Were there a lot of other iterations? After it got picked up and put into Waterloo’s hands, what did that process look like?

 

Veronika: Yeah, I think I can speak to the frustration a bit. I think that’s the big difference between academia and industry; there’s a full-on mindset when an industry person comes along, and it’s not always the same mindset as academia. Nine times out of ten, they don’t quite match. I don’t think we ever butted heads, but you could see our iteration cycles didn’t line up with what Veronika and her team were expecting at first.

 

There were some changes to the formulation that meant going back basically to step zero, but that’s not unusual for us; we do things over and over until they work. It’s gone quite well; I think we’ve found a good rhythm working together, and we’re always happy when we get a package from Creative CADWorks, another resin to test. That keeps us going too.

 

Hemdeep: Noah, what’s your experience been with us? Don’t hold back.

 

Noah: That’s fair. We went through a lot of iterations early on, September, October, just banging them out every week. Everything went pretty well, honestly, so nothing was too frustrating.

 

Veronika: I’ll say we also have to acknowledge there was an exponential improvement in the resin. When we started off, the first version, I remember thinking there was no way we were going to make this biocompatible; it killed the cells immediately. The next version was already way better, and where we are now is just amazing. So yeah, that was really good.

 

Hemdeep: I think I need to give credit to Lydia here; she was with us on that first phase, and carried a lot of the frustration. This is more of a sidebar, but I think Veronika, and the team members she’s brought on board, have this capability of going through the rigors of research, where the expectation of success isn’t set in stone, and developing new skills is held in really high regard: the ability to go through the steps, over and over. Lydia was amazing at pulling that through, and even though it didn’t fully work out for her personally, she persevered, making sure the strategy and testing protocol she developed became a strong baseline we could build on in the second phase.

 

Veronika: A hundred percent. That’s also sort of the core of these Mitacs collaborations; they’re really meant to be a training platform for young researchers and scientists. They don’t even ask for results, really; they ask what the student learned, what training was provided. So that’s always good to keep in mind; it’s not just about the results, it’s about training and establishing protocols.

 

Robin: I think you tested five different cell lines.

 

Noah: Yeah, five. Over the past eight months, we’ve mostly been testing the cytotoxicity and biocompatibility of Cyto-Clear, moving through iterations. We worked across a bunch of cell lines, wanting to give the resin a broad-spectrum profile, so it could be used for pretty much any downstream application, any cell line.

 

We split it into two categories: adherent and suspension cells. For suspension cells, the free-flowing ones, we tested sperm cells and monocytes (blood cells). For adherent cells, we looked at a uterine cell line, MES-SA, an endothelial line (vascular cells), and keratinocytes (skin cells). We came up with two types of assays based on application. For suspension cells, we developed an on-chip assay to test cytotoxicity: we’d print our own microfluidic chips, incubate cells inside the channels, then run a live/dead stain right inside the chip and image it directly on-chip, which was really cool.

 

For adherent cells, we took regular 24-well culturing plates and printed discs that would slot right into the wells, then let cells grow on or around the disc, measuring viability with a live/dead stain as well as an XTT assay, to look at cell health. It reacted well across the board, which was great. Moving from cell line to cell line, each one went faster than the last, since we already knew the baseline and weren’t worried about anything happening to the cells.

 

Robin: For the free-flowing cells, since it was on-chip, I assume you placed it under a microscope. Was there any difficulty actually viewing the cells, like was the resin inhibiting your ability to see what was happening inside the chip?

 

Noah: No, by the end we were able to print nice rectangular channels that didn’t interfere with the laser wavelengths the microscope needed for the live/dead stains, so it didn’t inhibit fluorescence at all. We did have to work out some printing parameters and post-processing steps to get the chips really clear, but by the end we could run the assay right on the chip and see the cells in their clusters, and free-flowing, the way blood and sperm actually behave, which was really cool.

 

Veronika: I think that was also one of the really nice outcomes, honestly a bit of a side result: deciding to run the assays on-chip. For brightfield as well as the different fluorescent channels, we were able to analyze the cells really well right on the chip, which was a nice extra validation of the material.

 

Hemdeep: I didn’t fully realize you’d been doing this until I was in India, and you called me for a meeting and started showing me images. I think that’s when it really dawned on me, because as you were showing me the images, you mentioned, almost as an aside, “by the way, these were imaged right on-chip.” I remember thinking, wait, hold on, what did you just do there? I think that almost validated our whole approach: we can build a better mousetrap, but sometimes it’s academia that actually shows you what the applications, and the secondary applications, can really be. On our side, we were just thinking about building a nicely transparent, biocompatible material; that was our basic goal. But this team put it all together, took it a big step further, validated it across a broad spectrum of cell lines, and did on-chip validation, something we’d never even thought was going to be possible with this material.

 

Noah: Yeah, I think it was a good mix between academia and industry, taking the strengths of each: industry moves really fast, and can prototype what you want to see very quickly, whereas academia goes deeper, wanting to see everything before moving on. That was one of the cool results, being able to actually apply the material to what its downstream use might look like.

 

Veronika: I think this resin, and the technology behind it, has potential across a lot of research areas, and for industry too. We could see these chips being printed for point-of-care devices, or even home diagnostics, thinking about sperm tests for infertility, or point-of-care devices in hospitals, for blood cell analysis and so on. For research, there’s really no limit; this material could be used across so many different areas. Our idea wasn’t to demonstrate every possible application, just to show the baseline, that this material could really work for a broad range of cells.

 

Noah: Glad you brought that up. There’s a ton of uses; even for point-of-care devices, it’d be really cool to have a chip that could take something as simple as blood cells and run tests that currently take two hours in a lab, like the monocyte monolayer assay. Hospitals run that when someone needs a red blood cell transfusion; it’s a lab test confirming the recipient’s antibodies won’t react against the donor’s blood. There are a lot of applications for this material in POC devices, and other labor-intensive lab tasks.

 

Hemdeep: With the testing you did, what additional tests would you have liked to run? I know with the 24-well plates you used discs instead; would additional tests have told you anything more?

 

Noah: There’s definitely a ton of directions we could go. Some things we want to look into further: cell adhesion, maybe some simple surface modifications to the material, then testing cell viability and health on adherent cells to see if they’ll actually grow on the 3D-printed material itself. Monocyte differentiation, inflammation markers for the blood cells; there’s a lot of directions you could take it.

 

Veronika: Especially if we envision the material as a scaffold, or for any longer-term application, more than a couple of days, there’s definitely more testing needed beyond what Noah mentioned, to enhance cell adhesion, differentiation, and proliferation. That would need to be developed cell-specific and application-specific.

 

Robin: I have a couple more questions about the 3D printing side. Did you get print settings from us when you first got the material, or were you going in completely blind?

 

Veronika: I think that was mostly Lydia, during her time on the project. We got some initial settings, then had to tweak them a bit, and obviously every new resin batch needs some adjustment. Noah, it’s pretty straightforward now, right?

 

Noah: Yeah, it’s ironed out; I haven’t changed it since the end of last term. Lydia ironed out the basics, and as we moved through the iterations it was just small tweaks to the print settings.

 

Robin: How long did it take to validate new print settings between iterations?

 

Noah: Pretty quickly, a couple of prints, so less than a week per iteration, usually. What we print isn’t too big, so the chips would usually print in under an hour. The discs, which I was printing at the time we were validating, would print in about ten minutes, so it was very quick to iterate and see what worked.

 

Robin: Was it also Lydia who developed the post-processing procedures, or was that more your task?

 

Veronika: I remember she tried out quite a few things; one of the washing steps after post-processing really improved biocompatibility. I believe it’s a water soak plus UV exposure, something she landed on that really helped.

 

Noah: Yeah, she found that curing in DI water for a fairly long time increases biocompatibility quite a bit, specifically.

 

Hemdeep: I think that concludes this conversation. What do you think, Robin? Yeah. So, thank you very much, Noah and Veronika, for joining us today. I was really happy to do this, and I’m glad our listeners got to meet the team behind a lot of the work we do on our side, and hear about the other work you’re doing as well. We’ll add links to Veronika’s team, and to some of the things we discussed, in the show notes. That concludes this episode of Big Ideas in Microscale. Thank you very much for listening, and we’ll see you on the other side.

 

Noah: Thank you for having us on.

 

Robin: And that’s a wrap on our three-part series with Veronika Magdanz and Noah Franco here on Big Ideas in Microscale. Over the past few weeks, we followed their journey from early academic exploration to the cutting-edge research they’re doing at the Magdanz Lab at the University of Waterloo. We heard about their work on non-surgical treatments using microrobots, sperm-based propulsion systems, and 3D-bioprinted organ models, then shifted to the challenges of bridging academia and industry, and how failure, iteration, and collaboration were essential to developing Cyto-Clear, our new cell-viable, biocompatible 3D printing material here at CADWorks 3D.

 

Hemdeep: In this final episode, we took a closer look at that iterative process, from adjusting material formulation, to refining post-processing techniques, to running cell-viability tests to identify real applications for the material. Veronika and Noah’s dedication is a reminder of just how much persistence and curiosity fuels scientific progress. We hope you enjoyed this deep dive into the future of micro-innovations and material science.

 

Robin: Our next guests on the podcast are Dr. Adam Woolley and Dr. Greg Nordin, two professors from Brigham Young University. Thanks for tuning in to Big Ideas in Microscale. If you enjoyed the episode, follow us to stay up to date. You can listen on Apple Podcasts and Spotify, or watch the full video on YouTube. Follow us for updates and behind-the-scenes content on LinkedIn, Instagram, Bluesky, and X: we’re CADWorks 3D across the board. For show notes, paper references, and bonus resources, visit cadworks3d.com.

 

Hemdeep: Thank you for tuning in, and as always, stay curious, keep exploring, and never stop asking the big questions shaping our world.

Additional Resources

Dr. Veronika Magdanz’s Lab​

Magdanz Lab

Dr. Veronika Magdanz @ Waterloo

Biography

Carl Hansen @ UBC

Biography

Dr. Veronika Magdanz’s Lab​

ABCellera Ltd.

Where Dr. Veronika Magdanz Starts Bioprinting

IBEC

Say Hi to our Guests

Dr. Veronika Magdanz | Assistant Professor @ University of Waterloo

Noah Franco | MASc Candidate @ University of Waterloo

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