Institute for Microsensors, -actuators and -systems

Group Lang: Sensors, Sensorintegration, Neuroimplants and Sensornets

Our group investigates thermal flow sensors on solid and flexible substrates. Outstanding parameters are high temperature stability, chemical resistance and high sensitivity. 

Sensor integration at IMSAS means the embedding of sensors in materials. The goal is to integrate the sensors into materials in such a way that macroscopic properties, like for example the material stability, are not influenced. To reach this aim, smaller sensor elements and new material embedding techniques are necessary.

Together with cognition scientists we develop neuroimplants with the long-term objective to convey optical impressions through a cortical visual prosthesis to a blind person.

In the project “The Intelligent Container” a sensor network is developed which measures parameters of perishable goods, for example the ripeness level of fruits inside a container. Using ripeness models, the remaining shelf-life is estimated whereby the logistic process is improved.

Group Lüssem: Flexible Sensor Systems

Our group studies and develops novel flexible sensors and sensor systems based on organic semiconductors.  Organic chemistry provides us with a near endless parameter space to optimize organic semiconductors and to tailor the properties of organic semiconductors towards dedicated applications. This additional degree of freedom has been used to design novel devices; the most prominent ones are Organic Light-Emitting Diodes, but Organic Photovoltaics and Organic Sensors are highly promising fields as well.

We study the use of organic semiconductors in organic biosensors. Our research focuses on Organic Electrochemical Transistors, which reach high signal gains and can be processed at low costs. We study different approaches to functionalize these transistors and develop new processes to integrate organic sensors into larger systems and to interface them with conventional electronics.

Organic sensors and sensor systems show high promise in several commercial applications. In particular the flexible nature of organic semiconductors enables the design of wearable sensor systems. Furthermore, the bio-compatibility of most materials can be used to form a strong link between organic devices and biological matter, which is in particular promising for the field of intra-body networks.