Welcome to YODA – Open Digital Archive for CSEM
The YODA archive gives access to CSEM's publications, such as its annual reports and brochures. For technical papers such as scientific publications, bibliographic information is provided, along with the full paper where this is possible.
This comprehensive database is part of CSEM's Open Access Publishing policy. For further information refer to the YODA support guide or contact repository@csem.ch.
Recent Submissions
Item Porous layers for environmental electrochemical sensors development(2023-06-15)Molecularly imprinted polymers are of great interest for environmental applications as they are able to specifically bind contaminants molecules even at very low concentrations. They are thus often used to concentrate the analytes and make them detectable for standard chromatography coupled with mass spectroscopy detection techniques when direct quantification would be impossible. Sensing through MIPs has been a tremendous topic in literature over the past years since they are highly specific, sensitive at low concentrations and robust. Moreover, being rather cheap and simple to use, interest in integrating them in low-cost easy-to-use sensors is growing fast. Complementary to MIPs which are very powerful to detect single molecules, Metal-organic frameworks (MOFs) are hybrid crystalline materials containing organic ligands and metal ions and able to sense families of compounds. Exhibiting high porosity and high surface area, MOFs can be customized to absorb efficiently the targeted analytes. MOFs properties can be well designed and controlled by modulating the metal ions, organic ligands, and the structural characteristics. Especially, the features of pores containing functional groups can allow the selective capture of the target analyte in their confined areas via molecular interactions such as a hydrogen bonding, coordination bond, and π-π interaction. This results in the pre-concentration effect and improves the sensitivity of detection. Interest in integrating such porous materials as selective adsorbent layers in chemical sensors has increased recently. Nevertheless, in both cases, refinement of sensing materials and transducer mechanisms is still essential to increase the reliability, selectivity, and response kinetics to a level suitable for commercial applications. The KDT Project AGRARSENSE aims at further developing such sensing layers for environmental applications mainly related to water contamination. The sensing layers will be deposited on miniaturized electrodes to monitor the quantity of emerging pollutants in ground or surface waters. Integration of these layers on typical transducers like MEMS or ISFET will also be addressed. The presented work will give insight on both development of the sensing layers including performances in lab configuration and advanced thin-film deposition techniques to form the sensing layer on the transducer. Formulation aspects as well as key points for the layer properties will be discussed. First results in environmental sensing will also be presented as well as miniaturization attempts.Item Porous layers for environmental (electrochemical) sensors(2024-06-13)Presentation on BU-T sensing activities in electrochemical detection (MIP) and optical detection (MOF, meso-porous sol-gels O2 sensing)Item MIP-based sensors for fast nicotine monitoring in aerosol(2024-09-02)Nicotine is the main active component of tobacco. Its quantification in aerosols and particularly the amount delivered in lungs is of great interest to track its impact on health. Current detection methods rely on the use of mass spectroscopy coupled with liquid chromatography. However, this requires highly qualified personnel and expensive equipment. In this context, we demonstrated that Molecular Imprinted Polymers (MIP) as sensing layer deposited on electrodes are very efficient to allow fast and cheaper quantification of nicotine in aerosols.Item Aptamer-based Electrochemical Sensor for the Monitoring of Carbamazepine in Freshwater Systems(2024-09-01)Carbamazepine (CBZ) is an active compound in commonly used drug and is highly durable in the environment, particularly in wastewater, which raises concerns about potential risks to animals and humans. We present an aptamer-based electrochemical sensor labelled with a redox probe which conformational change upon binding event is recorded by square-waved voltammetry. The electro-chemical sensor operated in concentrations range from 2.5 pM to 250 μM in buffer. This technology provides a potential method to enable the monitoring of CBZ in treated water.Item KI in der Industrie: Sprint oder Hindernisparcours?(2024-08-28)Künstliche Intelligenz (KI) revolutioniert die Industrie mit rasantem Fortschritt und bietet Potential für enorme Effizienz- und Innovationspotenziale. Während einige Unternehmen von schnellen Erfolgen profitieren, sehen sich andere vor komplexen Herausforderungen. In der Zukunft wird die Instandhaltung von Maschinen und Anlagen geprägt durch die intelligente Nutzung der vorhandenen Maschinen- und Prozessdaten. Trotz der Chancen bleibt Skepsis hinsichtlich der Datensammelwut, doch die erfolgreiche Nutzung dieser Daten wird entscheidend für den industriellen Erfolg sein.
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