Holst Centre and its partners are pushing the boundaries of sensor technologies. We focus on solutions that detect physical signals over large areas. Such large-area sensing arrays generate vast amounts of raw data, so we also explore smart algorithms and data analysis to validate the hardware and convert that ocean of data into relevant, actionable insights. With a wealth of in-house IP, we create complete sensing solutions tailored to the specific needs of your target applications.
Inspired by human skin, Holst Centre creates adaptable, multisensory surfaces that can be easily integrated into everyday objects and electronic applications. These surfaces feature fully printed temperature and pressure sensors as well as sensors in stretchable and foldable substrates.
Our unique technology platform allows these sensors to be combined in any desired configuration to suit your application. With the right combination of sensors and algorithms, these sensing surfaces make possible anything from battery management systems for electric vehicles to mattresses that monitor babies' heart rates and breathing as they sleep.
Ultrasound on foil
Ultrasound offers safe, radiation-free medical imaging. However, current ultrasound systems require manual manipulation by a highly skilled operator and offer a small field of view. Through a unique, printed architecture, Holst Centre makes it possible to create large-area, flexible transducer arrays that reduce operator variability and open the door to hands-free ultrasound systems.
Our ultrasound-on-foil technology allows millions of individual transducers to be integrated into an adhesive patch, enabling higher resolution and image quality as well as a wider field of view. Optimized polymers and adhesives in the patch provide better acoustic impedance matching the human body, eliminating the need for the gels used in a traditional ultrasound scan. Such patches can be used, for example, for at-home monitoring of high-risk pregnancies and arterial plaque build-up, and in image-guided therapies where it frees up the doctor's hands for fine needle manipulation.
Large-area optical and near-infrared sensors
Our large-area image sensors combine high efficiency and low dark currents. Using thin-film technologies, they are thin, lightweight, (semi-)transparent and can be easily integrated into imaging systems, consumer electronics such as smartphones and even everyday objects like door handles.
Ideal for fingerprint and biometric detectors, our optical sensors deliver high resolutions (500 ppi and beyond) in sizes large enough for palm and four-finger scans that comply with the FBI's most stringent certification category (FAP 60). Examples include a 70%-transparent sensor that can be integrated on LCD displays and the world's first high-resolution perovskite-based fingerprint sensor.
We are also pushing large-area image sensors further into the near-infrared (NIR) optical domain with photodiodes that are sensitive up to and beyond 1100 nm. This enables non-invasive in-body imaging for applications such as large-area oxygen-saturation (SpO2) measurements, optical brain scans and cuffless blood pressure monitoring, as well as vein-pattern detection for enhanced biometric security.
Flexible X-ray detectors
Thinner, lighter and more robust than traditional detectors, with our flexible X-ray sensors, X-ray systems are easier to use and move around. The same technology can be used to create curved detectors that enable smaller 3D imaging systems with better image quality.
Our technology platform includes organic- and perovskite-based sensors, enabling direct and indirect conversion using a scintillator layer with an optical image sensor. For direct conversion, recommended for example in mammograms, the greater sensitivity of perovskites makes it possible to produce detectors that deliver excellent resolution and image quality at lower patient doses.
Biometric detectorsCould your house or an ATM recognize you just from your hand? Our technology platform makes possible a variety of different fingerprint and biometric detectors that could be easily integrated into displays and other everyday objects.
The detectors deliver high resolutions (500 ppi) in sizes large enough for palm and four-finger scans, enables compliance with FAP 60, the FBI's most-stringent certification category. Through simultaneous photoplethysmogram (PPG) recording, the sensors can offer liveness detection for much greater resilience against spoofing attacks. Alongside image sensors for under-display integration, we have created the world's most transparent optical large-area fingerprint sensor. At 70% transparent, it is ideal for integrating on top of LCD displays. And we have developed the world's first high-resolution perovskite-based fingerprint sensor, achieving above 80% EQE.