2,602 Works

08 - The European Sensor Systems Cluster - ESSC: A New EC Initiative

M. Penza
This is a is a short overview of the European Sensor Systems Cluster (ESSC), that is an EC initiative, launched on November 2014, to maximize impact of the FP7/H2020 research and innovation projects for industrial leadership and key enabling technologies applications. The ESSC cluster has already involved 7 FP7/H2020 projects, European networks and platforms, 13 founder organizations with at least 40 members from more than 15 Countries (June 2015).

07 - Theory of QCM and SAW Devices in Sensors and Biosensors Applications

M. Voinova & A. Vikström
The surface acoustic waves-based (SAW) sensors and the quartz crystal microbalance (QCM) are widely employed for the ultrasensitive surface mass detection in volatile organic compounds and air quality control measurements. In ‘wet’’ conditions, the linear relation (Sauerbrey) between the rigidly attached small amount of deposited mass (the principle of a quartz microbalance) can be violated in case of adsorption of liquid on the top of the film. The correction function for the mass sensitivity should...

06 - VOC Sensing Properties of Hybrid Nanostructures

E. Şennik, O. Alev, Z.Z. Öztürk, B. Şennik, F. Yılmaz & N. Kılınç
In this study, polymer/TiO2 nanoheterostructures were fabricated to investigate their gas sensing properties. TiO2 nanorods were fabricated by hydrothermal method. Then polystyrene polymer was coated on TiO2 nanorods by spin coating method. The morphologies and structure of the samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM). Electrical and VOC sensing properties of hybrid nanostructure device were investigated. The hybrid nanostructure shows highest sensor response for ethanol (EtOH) at 100 oC.

05 - Potentialities of Metallophthalocyanines-Based Gas Sensors for Monocyclic Hydrocarbons Monitoring in Air

J. Brunet, A. Kumar, C. Varenne, A.L. Ndiaye & A. Pauly
Focused on the development of chemical sensors dedicated to BTX measurements, our recent works have demonstrated the relevance of tetra-tert-butyl metallophthalocyanines (ttb-MPc) as sensitive material for this purpose. Taking into consideration the aromatic character of both the target gases and the sensing material, sorption mechanisms involve π-stacking interactions without charge transfer between gaseous molecules and phthalocyanine units. Because of the nature of interactions, acoustic transducer and more precisely quartz crystal microbalance were used. Studies achieved...

04 - Increasing Sensitivity and Selectivity of Gas Sensor-Systems by PLD-deposited Sensitive Layers and Micromachined Pre-Concentrators with MOF Layers

A. Schütze, T. Sauerwald, M. Leidinger, J. Huotari, J. Lappalainen, M. Rieger, J. Hürttlen, C. Alépée, J. Liimatainen & V. Kekkonen
The EU project SENSIndoor aims at the development of novel nanotechnology based intelligent sensor systems for selective monitoring of Volatile Organic Compounds (VOC) for demand controlled ventilation in indoor environments. Target gases are benzene, naphthalene and formaldehyde, as these VOCs are highly health relevant and occur in many indoor environments, thus making their monitoring a high priority for safe and healthy buildings. Relevant concentrations according to recommended values given by the WHO are in the...

03 - AirSensEUR: An Open-Designed Multi-Sensor Platform for Air Quality Monitoring

M. Gerboles, L. Spinelle, A. Kotsev & M. Signorini
AirSensEUR is a multi-sensor platform designed for the monitoring of air pollution at low concentration levels. Its electronic circuits are sensitive enough to measure the low voltages of electrochemical gas sensors. AirSensEUR was developed with the aim to create an open object (software and hardware) and to have the capacity to behave as a node within a network of multi sensors assuring interoperability and compliance with the Inspire Directive.

02 - Sensitivity of VOC Sensors for Air Quality Monitoring within the EURAMET Key-VOC project

L. Spinelle, M. Gerboles, G. Kok & T. Sauerwald
The Air Quality Directive AQD sets the limit value for benzene at 5 μg/m³ over a calendar year which corresponds to the upper range of concentration measured in air quality monitoring. Currently, the sensitivity of sensors represents the major challenge for measuring benzene in the ppb range. In 2005, benzene levels in ambient air less than 100 ppb were out of the range of gas sensors. Nowadays, the technological progress resulted in an improvement of...

01 - COST Action TD1105: European Network on New Sensing Technologies for Air-Pollution Control and Environmental Sustainability - EuNetAir

M. Penza
This is a short overview of the COST Action TD1105 EuNetAir - European Network on New Sensing Technologies for Air-Pollution Control and Environmental Sustainability - funded in the framework European Cooperation in the field of Scientific and Technical Research (COST) during the period 2012-2016. The international networking has involved more than 120 teams from academia, research, agencies and industry from 31 COST Countries and 7 Non-COST Countries (June 2015).

E5.1 - Chemosensitive gas detection

C. Pannek, K. Schmitt & J. Wöllenstein
The chemosensitive gas detection is one opportunity of low-cost and selective gas sensing. Absorption changes of the dye, due to the gas reaction can be detected in different ways, depending on the application and requirements. We give an overview of the state of the art of gasochromic sensing and of the different measurement principles. Following this, we describe our investigation on gasochromic materials for the detection of CO, NO2 and NH3.

D4.2 - Investigation of DRIE etching performance on signal quality of a SOI based pressure sensors for harsh environments

P. Mackowiak, F. Meinecke, O. Ehrmann, K.-D. Lang, B. Mukhopadhyay, T. H. Hoang, Q.-C. Dao & H.-D. Ngo
Many silicon microsensors are using a thin silicon membrane with integrated piezoresistors as sensing element [1]. The performance of these micromechanical silicon sensors is strongly depending on the quality of the manufactured membranes such as geometrical parameters, roughness of membrane surface, uniformity of thickness etc.. Silicon membrane structures for sensors and actuators could be realized by using bulk micromachining technologies like KOH, TMAH or DRIE (Deep reactive Ion Etching). DRIE method is a well-known and...

C6.4 - Tactile and Non-contact Sensors for Coordinate Measuring Technology

R. Christoph & I. Schmidt
Coordinate measuring machines provide the most flexible technical solutions for dimensional measuring. Due to the possibility of combining several sensors in one machine, multisensor coordinate measuring machines are of particular advantage. When choosing the sensors for an application, the conditions of the measurement object, such as the dimensions of the features to be measured, surface characteristics as well as required accuracy, must be taken into consideration. The talk gives a short overview over the basic...

D4.4 - Printed Sensor for Integrating in Aluminum during Casting

G. Dumstorff & W. Lang
We present a sensor with resistive structure integrated in aluminum. The sensor structures are realized on an aluminum substrate by screen printing. They are integrated in aluminum during casting. After fabrication the sensors were characterized by measuring the temperature dependent resistance.

D5.4 - A CMOS Based Polysilicon Nanowire Biosensor for Monitoring the Cardiovascular Disease Markers in Human Serum

I-S. Wang, C.-T. Lin, C.-C. Peng, J.-K. Lee, H.-H. Tsai & H.-H. Liao
This study demonstrates a polysilicon nanowire (poly-Si NW) biosensor platform is suitable for biomolecular analytes detection in human serum. Three biomarkers, such as cardiac-specific troponin-I (cTnI), N-terminal prohormone brain natriuretic peptide (NT-proBNP) and Interleukin 6 (IL-6), for cardiovascular diseases are examined. Compared with conventional examination methods, using polysilicon nanowire biosensor not only reduces the inspection time but also economizes the cost of diagnoses. Moreover, these biosensor platforms are made by a standard complementary metal-oxidesemiconductor (CMOS)...

D4.3 - Silicon probing tips coated with protective aluminum oxide thin films for fast tactile cantilever sensors

H. S. Wasisto, F. Yu, M. A. Deeb, L. Doering, U. Brand, A. Bakin, A. Waag, E. Peiner & St. Völlmeke
Silicon microprobe tips are fabricated and integrated with piezoresistive cantilever sensors for fast surface roughness scanning systems. A combination of wet and inductively coupled plasma (ICP) cryogenic dry etching processes is employed to create high-aspect-ratio tips. For the wear-resistant tip coatings, atomic-layer deposition (ALD) technique is applied to deposit conformal ~14 nm thick aluminum oxide (Al2O3) layers using a binary reaction sequence in low thermal process with precursors of trimethyl aluminum (TMA) and water (H2O)....

D5.3 - Laser induced fluorescence spectroscopic sensor for realtime identification of fossil diesel fuel, biodiesel and their blends

Z. Fan, V. Gross & J. Krahl
A low cost laser induced fluorescence spectroscopic sensor (LFS-sensor) was designed to identify different fossil diesel fuels, biodiesel and biodiesel/diesel fuel blends. This sensor was built from commercial electronic and optical components. It provides the emission spectrum excited at 405 nm. Currently 52 spectra of different diesel fuels, biodiesels, biodiesel blends and gasoline were measured and stored in a reference data bank. Based on this, unknown fuel samples can be identified easily. Furthermore, the LFS-sensor...

D5.2 - Optimized Manufacturing of Industrial Hydrogel Sensors

M. Windisch, J. Lienig, K.-J. Eichhorn & R. Schulze
Fast industrial hydrogel sensors require thin polymer films with reproducible properties as sensing layer. The manufacturing process of such hydrogel coatings in the submicrometer range has been investigated with respect to a sufficient and reproducible sensitivity in order to create the necessary knowledge for a quality-assuring volume production. Interrelations between process parameters, the resulting hydrogel coating properties and the sensor behavior have been studied by means of batch manufacturing tests and direct measurements of film...

D5.1 - Quantification of Volatile Organic Compounds in the ppb-range using Partial Least Squares Regression

M. Bastuck, C. Bur, T. Sauerwald, A. Schütze, A. Lloyd Spetz & M. Andersson
Gas-sensitive, silicon carbide based field-effect transistors (SiC-FETs) with platinum gate are operated dynamically using temperature cycled operation (TCO) to quantify three hazardous volatile organic compounds (VOCs), i.e. benzene, naphthalene and formaldehyde, in the low ppb range. A suitable temperature cycle is developed based on static response measurements, and a linear model is built employing Partial Least Squares Regression (PLSR) with features extracted from the temperature cycle. Additionally, a strategy for cycle optimization using a t-test...

D4.1 - Inkjet and Aerosol Jet® Printed Sensors on 2D and 3D Substrates

B. Polzinger, J. Keck, V. Matic, W. Eberhardt & H. Kück
Digital non-contact-printing technologies e.g. inkjet or Aerosol Jet® are becoming more and more interesting for the manufacturing of electronic components due to their benefits such as easy variation of printing layouts, short process chains without masks, large variety of usable substrates and inks - frequently based on nanomaterials - and a certain 3D capability. In this paper printed sensors for e.g. temperature, strain, intrusion, humidity, or magnetic fields fabricated by inkjet or Aerosol Jet® technology...

D6.3 - Wearable Electronics: Market & Technology analysis

B. Roussel & G Girardin
More than 10 millions units of wearable devices were sold during the year 2014, but this number is rather low if we consider the total addressable market (TAM). These unbacked products seem to have a great but clearly under-exploited potential. In the future, several dozen of millions of units are expected, but to that end, not only is a mature technology mandatory, but market drivers as well as the most relevant applications need to be...

D6.2 - An Ultra-Low Power Wake-Up Receiver for Real-time constrained Wireless Sensor Networks

S. Bdiri & F. Derbel
Most Wireless Sensor Networks (WSNs) are considered out of reach when deployed in harsh environment. Energy consumption is a critical feature as these networks incorporate battery-powered devices known as wireless sensor nodes (WSn). Typically, the majority of applications don’t need from nodes to remain active all the time. However, what is called idle listening waste most of the energy since the radio transceiver is constantly active. In case of real-time application, the energy-hungry chip remains...

D6.1 - Universal and Dynamically Reconfigurable Sensor Interface in Lab-on-Spoon Multi-Sensor System

R. Freier & A. König
Surging application fields of integrated electronics and sensors, as e.g., automation, internet of things (IoT), cyber-physical(-production) systems (CP(P)S), or Industry 4.0, require more able, versatile, and dependable sensor electronics and systems. In particular, cost effective features of self monitoring, -calibration, trimming, or -healing are sought after. State-of-the-art integrated components for sensor signal conditioning are usually not generic and dedicated to specific sensors or applications and are not offering self-x capability. Thus, based on a survey...

D3.4 - Multimode Laser Doppler Velocimeter for Flow Measurements in the Manifold of a Fuel Cell Stack

S. Burgmann, M. E. Kinaci, F. Schmieder, L. Büttner & J. Czarske
Fuel cell stack performance strongly depends on the uniformity of the flow distribution over the fuel cells. Typically, numerical flow simulations are used to design the small flow geometries of a stack but experimental validation of the simulated flow is mostly lacking. To measure the flow distribution within these small geometries a specific Laser Doppler Velocimeter has been developed that uses light with low spatial coherence (multimode light) and fluorescent tracer particles. A spatial resolution...

D8.3 - Evaluation of laser sensors for precise line following applications

M. Albert, D. Eck & K. Schilling
For the development of a line coating robot, that is able to autonomously apply line markings on the ground, the robot needs to follow a line with high precision. To minimize the costs of the system a low cost laser sensor was developed for navigating the system along a laser line. The sensor was then compared to a commercial laser receiver for rotating lasers. The system was tested in an application oriented scenario and tracked...

D8.2 - Multi-Parameter Low-Power Sensor Network for Aquatic Research

L. Wahn, H.K. Trieu, J. Müller, T. Gentz & M. Schlüter
A new approach was developed for an underwater sensor network to simultaneously measure multiple environmental parameters, relevant for the research of aquatic systems. In marine science spatial and time-dependent variations of base parameters are of significant interest regarding environmental influenced biodiversity in shelf areas. For example, the influence of submarine groundwater discharge (SGD) on marine organisms are part of today’s scientific research [1]. The sensor network consist of a fault-tolerant CAN-BUS topology and is designed...

D8.1 - Detecting and Compensating Sensor Faults in a Hydraulic Condition Monitoring System

N. Helwig, E. Pignanelli & A. Schütze
In this work, we present a statistical condition monitoring system allowing the qualitative and quantitative determination of typical faults related to the hydraulic system as well as sensor faults of the installed sensor network. Single sensor faults such as constant offset, drift, noise, and signal peaks can be identified before leading to false alarms. Furthermore, the system is able to compensate the failure of up to 5 sensors with sufficient classification performance exploiting inherent correlations...

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