Component design and testing for a miniaturised autonomous sensor based on a nanowire materials platform

Authors Rajesh Ramaneti, Francois Krummenacher, Fritz Falk, Naser Khosropour, Björn Eisenhawer, Cees van Rijn, Giorgos Fagas, Ran Yu, Adrian M. Ionescu, Erik Puik, Montserrat Fernández-Bolaños Badia, Nikolay Petkov, Hien Duy Tong, Rik Lafeber, John C De Mello, Olan Lotty, Adrian M. Nightingale, Yordan M. Georgiev, Elizabeth Buitrago, Frank van der Bent, Michael Nolan, Justin D. Holmes, Annett Gawlik, Maher Kayal, Guobin Jia
Published in Microsystem Technologies
Publication date 20 March 2014
Research groups Smart Systems for Healthy Living
Type Article


From Springer description: "We present the design considerations of an autonomous wireless sensor and discuss the fabrication and testing of the various components including the energy harvester, the active sensing devices and the power management and sensor interface circuits. A common materials platform, namely, nanowires, enables us to fabricate state-of-the-art components at reduced volume and show chemical sensing within the available energy budget. We demonstrate a photovoltaic mini-module made of silicon nanowire solar cells, each of 0.5 mm2 area, which delivers a power of 260 μW and an open circuit voltage of 2 V at one sun illumination. Using nanowire platforms two sensing applications are presented. Combining functionalised suspended Si nanowires with a novel microfluidic fluid delivery system, fully integrated microfluidic–sensor devices are examined as sensors for streptavidin and pH, whereas, using a microchip modified with Pd nanowires provides a power efficient and fast early hydrogen gas detection method. Finally, an ultra-low power, efficient solar energy harvesting and sensing microsystem augmented with a 6 mAh rechargeable battery allows for less than 20 μW power consumption and 425 h sensor operation even without energy harvesting."

Language English
Published in Microsystem Technologies
Year and volume 20 4
Key words Sensoren
Page range 971-988

Smart Systems for Healthy Living