Faster, more accurate and affordable, ... on-chip PCR is a key component of advanced diagnostic, therapeutic and research lab-on-chip workflows.
The COVID-19 pandemic abundantly demonstrated the importance of fast, accurate and affordable diagnostics. Without it, effective and personalized healthcare is out of reach.
Nanotechnology plays an important role in the development of such next-gen testing platforms. Moving stages of the workflow to a microfluidic chip results in benefits such as miniaturization, automation, and lower use of costly reagents.
Imec’s ultra-fast PCR-on-chip technology is a prime example of that approach.
For many diagnostic, therapeutic and research goals, DNA-based detection remains the gold standard. And DNA amplification is a crucial stage of that process. The go-to technique is polymerase chain reaction (PCR), which relies on cycles of repeated heating and cooling to generate thousands of millions of copies of a specific piece of DNA.
Moving this thermal cycling to tightly controlled microfluidic channels on a chip immediately results in several benefits:
Finally, PCR-on-chip technology opens the door to digital droplet PCR (ddPCR), a method for quantifying molecules of interest without need for calibration.
Imec develops integrated sample-to-result chips to perform PCR tests. For most microfluidic structures, we use silicon channels, sealed with glass. Silicon is more costly than polymers, and more complex to handle. But it also results in better prospects for mass production and easier integration of other lab-on-a-chip components such as sensors and signal processors.
Imec’s on-chip technology stands out because of its capacity for extreme miniaturization and parallelization. It performs a full PCR analysis from whole-blood in less than ten minutes. The on-chip workflow integrates:
Imec’s lab-on-a-chip platform also incorporates microfluidic components to generate, merge and split droplets. This enables a process called digital droplet PCR, a less cumbersome alternative for the well-established method of quantitative PCR (qPCR) using fluorescent markers.
The goal of quantitative PCR is to establish not only the presence, but also the amount of a certain DNA molecule in a sample. Digital droplet PCR achieves this by:
Because ddPCR dispenses with the need for calibration curves, it’s a very efficient and robust method. Moreover, it allows the detection of two DNA variants in a sample – even if one is much more abundant than the other.
Want access to our on-chip PCR or ddPCR technology? Do you want to build a lab-on-a-chip solution to improve the throughput and accuracy of your processing while reducing the system cost and size?
Imec supports you with your R&D, process development and low-volume production. We create a whole lab on one cm² through monolithic integration of silicon microfluidic structures, micro-optics, photonics and electronics.