Inside Microsystems Technology:
When the first computers were built in the 1940s, they still filled entire halls. They weighed as much as several elephants, consumed as much electricity as a small town, and were ultimately slower than your modern-day pocket calculator.
Since then, the rule in technology has been: the smaller, the more powerful. Today, you casually carry a supercomputer in your trouser pocket.
Whilst we’ve long since got used to the tiny microchips in our smartphones, the next mini-era is just dawning in laboratories.
Imagine if you could shrink an entire chemical plant, huge analytical instruments and a whole medical laboratory down to the point where they’d fit on a small piece of plastic. That’s exactly what’s happening right now in microsystems technology.
What exactly is ‘lab-on-a-chip’ all about?
Let’s compare what we know.If your doctor wants to take a blood sample today, this is usually how it goes: a needle in your arm, the sample is drawn, then you wait.
The tube is packaged, collected by a courier and transported to a huge central laboratory. 📫
There, machines weighing tonnes sort, analyse and evaluate the samples with the help of staff. 🔬
It works quite well, but there’s one major drawback: it takes a great deal of time and consumes a lot of resources. 💸
Yet time is of the essence, particularly when it comes to serious illnesses where every moment can mean the difference between life and death.
The solution being developed by researchers sounds like science fiction: the ‘lab-on-a-chip’. This involves shrinking an entire medical laboratory down to an area as small as a credit card.
But take note: the technology can do far more than ‘just’ analyse blood samples.
More than just analysis: the cell in the mini theme park.
But the technology can do far more than ‘just’ analyse blood samples. A well-known article in the journal *Nature* [2] shows that these mini-chips are transforming medical research as a whole. Because we can recreate the body’s systems on a tiny scale on these chips, living cells can be studied there just as they would be in their natural environment.
Scientists also refer to these as ‘organ-on-a-chip’ systems. Instead of testing new active substances in the lab using flat plastic dishes, as was done in the old-fashioned way, the chip simulates the real interaction between organs such as the lungs, liver or heart. This allows researchers to see much earlier on whether a new drug is effective at all.
This not only saves time and money, but may also render many animal experiments in research unnecessary in the future.
In a Nutshell
We have learnt:On a small scale, liquids behave quite differently.
Surface tension and capillary forces dominate. Gravity plays a secondary role.
Minuscule sample volumes – in this case, individual drops – can be channelled precisely and fully automatically through a network of tiny channels.
Built-in biosensors then analyse the tiny droplets in a matter of seconds and detect pathogens or biomarkers on the spot. [3]
As you’ve probably gathered, there’s much more to microfluidics and biosensors than simply making devices smaller. These technologies are turning our entire medical world on its head.
No more exorbitantly expensive specialised machinery, no more huge sterile laboratories, and no more specialist staff who have to spend hours sorting samples instead of looking after people.
If the laboratory can fit onto a tiny chip, medicine suddenly becomes possible anywhere. Researchers also refer to this approach as ‘point-of-care diagnostics’ – that is, diagnostics carried out directly at the point of treatment. [4]
Help for remote areas: In many parts of the world, proper medical care is in extremely short supply. Often, there are simply not enough resources to detect dangerous pathogens in time. Armed with these mini-chips, aid workers can now detect diseases right there in the jungle, in desert villages or in crisis zones – and thus stop a pandemic before it even really gets off the ground.
Your own kitchen-table lab: But things are set to get exciting for you at home too. How about being able to test your next blood values yourself? A tiny prick, a drop on the chip, and seconds later you’ll have the result on your smartphone. No need for a doctor’s appointment, no crowded waiting rooms and no waiting days on end for the post.
The potential of this technology is enormous, but for many years, manufacturing at the micrometre scale was extremely expensive and complicated. How can we overcome this barrier?
Insights into current research
At the upcoming Science Talk on 25 June at phaeno, we will be discussing precisely this intersection of vision and feasibility. Our guest, Prof. Dr Janina Bahnemann, is an expert in the field of microfluidics. Her talk will focus on a number of key questions, such as:
How can liquid channels and biosensors be produced quickly and cost-effectively today using modern 3D printing?
What lies behind the current ‘CELLenger’ research project?
How reliable and accurate are these mini-labs compared to the established large-scale laboratories in the medical world?
🪧 Please note: Admission is free; no registration is required.
Further information at:
Science Talk: Biotechnology on a micro scale.
Conclusion
The biggest changes of our future are often foreshadowed by the smallest of things. The miniaturisation of biotechnology shows that we are heading towards a world in which cutting-edge medicine no longer has to take place far away in a laboratory, but exactly where it is needed: right there with the people.
Come along to the Science Talk, join the discussion and get a glimpse into the world of tomorrow!
[1] Max Planck Institute for Polymer Research. (n.d.). Microfluidics. Retrieved 18 June 2026 from https://www.mpip-mainz.mpg.de/1067314/Microfluidics
[2] Sackmann, E. K., Fulton, A. L., & Beebe, D. J. (2014). The present and future role of microfluidics in biomedical research. Nature, 507(7491), 181–189.
[3] Squires, T. M., & Quake, S. R. (2005). Microfluidics: Fluid physics at the nanolitre scale. Reviews of Modern Physics, 77(3), 977–1026.
[4] Gubala, V., Harris, L. F., Ricco, A. J., Tan, M. X., & Williams, D. E. (2012). Point-of-care diagnostics: Status and future. Analytical Chemistry, 84(2), 487–515.