Refine
Year of publication
Institute
- INB - Institut für Nano- und Biotechnologien (71) (remove)
Document Type
- Article (65)
- Conference Proceeding (6)
Keywords
- biosensors (3)
- acetoin (2)
- capacitive field-effect sensor (2)
- tobacco mosaic virus (TMV) (2)
- Bacillus atrophaeus (1)
- Bioabsorbable (1)
- Calorimetric gas sensor (1)
- Capacitive field-effect sensor (1)
- Dehydrogenase (1)
- Diaphorase (1)
- Enzymatic biosensor (1)
- Hydrogen peroxide (1)
- Label-free detection (1)
- O2 plasma (1)
- Plant virus (1)
- Polyimide (1)
- Polylactide acid (1)
- Resistive temperature detector (1)
- Silk fibroin (1)
- Simultaneous determination (1)
- Sterilisation process (1)
- TMV adsorption (1)
- Ta₂O₅ gate (1)
- Tobacco mosaic virus (1)
- Tobacco mosaic virus (TMV) (1)
- Zeta potential (1)
- acetoin reductase (1)
- actuator-sensor system (1)
- alcoholic beverages (1)
- amperometric biosensors (1)
- annealing (1)
- bi-enzyme biosensor (1)
- biocompatible (1)
- biocompatible materials (1)
- biodegradabl (1)
- biodegradable electronic devices (1)
- calorimetric gas sensor;hydrogen peroxide;wireless sensor system (1)
- capacitive field-effect biosensor (1)
- capacitive field-effect sensors (1)
- carbon electrodes (1)
- electrolyte-insulator semiconductor sensor (EIS) (1)
- encapsulation materials (1)
- endospores (1)
- enzyme immobilization (1)
- enzyme kinetics (1)
- enzyme-logic gate (1)
- fibroin (1)
- glucose (1)
- hydroxylation (1)
- immobilization (1)
- light-addressable electrode (1)
- light-addressable potentiometric sensor (1)
- microfluidics (1)
- organosilanes (1)
- penicillinase (1)
- plant virus detection (1)
- silanization (1)
- surface functionalization (1)
- urease (1)
Realization of a calorimetric gas sensor on polyimide foil for applications in aseptic food industry
(2010)
Multi-analyte biosensors may offer the opportunity to perform cost-effective and rapid analysis with reduced sample volume, as compared to electrochemical biosensing of each analyte individually. This work describes the development of an enzyme-based biosensor system for multi-parametric determination of four different organic acids. The biosensor array comprises five working electrodes for simultaneous sensing of ethanol, formate, d-lactate, and l-lactate, and an integrated counter electrode. Storage stability of the biosensor was evaluated under different conditions (stored at +4 °C in buffer solution and dry at −21 °C, +4 °C, and room temperature) over a period of 140 days. After repeated and regular application, the individual sensing electrodes exhibited the best stability when stored at −21 °C. Furthermore, measurements in silage samples (maize and sugarcane silage) were conducted with the portable biosensor system. Comparison with a conventional photometric technique demonstrated successful employment for rapid monitoring of complex media.
Capacitive field-effect electrolyte-insulator-semiconductor sensors consisting of an Al-p-Si-SiO2 structure have been used for the electrical detection of unlabelled single- and double-stranded DNA (dsDNA) molecules by their intrinsic charge. A simple functionalization protocol based on the layer-by-layer (LbL) technique was used to prepare a weak polyelectrolyte/probe-DNA bilayer, followed by the hybridization with complementary target DNA molecules. Due to the flat orientation of the LbL-adsorbed DNA molecules, a high sensor signal has been achieved. In addition, direct label-free detection of in-solution hybridized dsDNA molecules has been studied.
Label-free Electrostatic Detection of DNA Amplification by PCR Using Capacitive Field-effect Devices
(2016)
A capacitive field-effect EIS (electrolyte-insulator-semiconductor) sensor modified with a positively charged weak polyelectrolyte of poly(allylamine hydrochloride) (PAH)/single-stranded probe DNA (ssDNA) bilayer has been used for a label-free electrostatic detection of pathogen-specific DNA amplification via polymerase chain reaction (PCR). The sensor is able to distinguish between positive and negative PCR solutions, to detect the existence of target DNA amplicons in PCR samples and thus, can be used as tool for a quick verification of DNA amplification and the successful PCR process.