Compact size
< 2mm
A miniaturized photonic sensing element that enables measurements in confined spaces, with small sample volumes, or at multiple points across a process.
Miniaturized photonic liquid sensing
Know your process.
Wherever it happens.
From tiny sample volumes and hard-to-reach locations to multiple sensing points across a process, Firefly's miniature photonic sensors open up new measurement possibilities. Gain a clearer picture of what's happening, spot changes early, and make better decisions about quality and resources.
Small sensor. Big possibilities.Four key advantages.
Four key advantages.
Our miniaturized photonic technology combines measurement sensitivity, compact dimensions, and a flexible design to make liquid monitoring possible across a wider range of applications.
High resolution
0.0003RIU
Detect small changes in refractive index to monitor liquid concentration and process variations with high sensitivity.
Cost-Effective
Lower costs
By innovating across the entire sensing system, we aim to reduce equipment costs and make liquid monitoring more affordable and accessible across a wider range of applications.
Versatile integration
In-line · At-line · Off-line
From laboratory tests and standalone pilots to integration into industrial equipment, our technology can be adapted to different measurement needs.
Small enough to fit. Versatile enough to explore new possibilities.
Why Firefly Sensing
From a few measurements
From a few measurements
to insight everywhere, all the time.
Understanding a liquid process often means choosing between occasional sampling and costly in-line monitoring. Limited sample volumes, confined spaces, and installation requirements can further restrict measurement possibilities. Firefly's miniature photonic technology offers a more affordable and flexible approach, making it easier to monitor liquids continuously, wherever measurements are needed.
01
Offline sampling
A snapshot
of your process.
Samples are collected and analyzed separately, providing information at specific moments. Changes between measurements may go unnoticed, delaying decisions and process adjustments.
PERIODIC · SAMPLE-BASED
02
Conventional in-line
Continuous monitoring,
with limitations.
In-line refractometers provide real-time measurements, but equipment costs, instrument size, and installation requirements can make them impractical for confined spaces, small-scale processes, or applications with limited budgets.
CONTINUOUS · INSTALLATION-DEPENDENT
03
Firefly Sensing
Small sensor.
More possibilities.
Our miniature photonic technology combines continuous liquid monitoring with a compact, cost-effective design. From small sample volumes to industrial processes, it opens up new measurement possibilities and provides timely insights for better process control.
COMPACT · FLEXIBLE · COST-EFFECTIVE
More possibilities.
Timely insights.
Better process decisions.
The technology
Miniaturized photonics. Simplified readout. One sensing system.
01 / SENSE
Engineered photonic sensing.
Our nanophotonic structures produce an optical response that changes with the liquid's refractive index. This allows us to detect small variations using a sensing element that can be as small as 2 mm.
02 / READ
Rethinking how photonic sensors are read out
Our innovative optical readout eliminates the need for a conventional spectrometer, enabling a compact, cost-effective measurement system without compromising the ability to detect small changes in liquids.
03 / ACT
From optical response to process insights
Our technology translates optical signals into refractive index measurements and, through application-specific calibration, concentration. This information helps identify changes as they happen and supports better process decisions.
Applications
One sensing platform. Different liquid processes.
Food & beverage
Refractive index can be mapped to product-specific, practical quality indicators—supporting composition insight, concentration-related metrics, and consistency monitoring. Compact sensing enables at-line checks and in-line tracking for tighter control, less variability, and earlier detection of deviations to reduce waste.
Small-volume systems (e.g., microfluidics)
Miniaturized sensing is a strong fit for microreactors and microfluidics, where traditional tools are often too bulky or require too much sample. Use refractive index as a universal signal and translate it into the indicators needed for rapid screening, optimization, and control.
Laboratory & R&D
In the lab, Firefly Sensing supports fast, non-destructive measurements to compare samples and build robust correlations between RI and the metric of interest. Ideal for method development, feasibility testing, and validating what will later be measured at-line or in-line.
The people behind Firefly
Deep-tech is still a people business.
From fundamental photonics research to hands-on engineering, industrial applications, and business development, our team combines technical expertise with market insight and strategic guidance. Together, we work to turn innovative sensing technology into practical solutions for industry.
Partners/Backed by
Have a liquid process in mind?