Global ETD Search
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Showing 1 to 9 of 9 for “"ISFET"”.
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Multi-ISFET sensor system for soil analysis
Site-specific crop management aims to improve production efficiency by adjusting crop treatments, especially fertilizer and chemical application, to local conditions within the field. The implementation of spatially selective field operations is dependent on field mapping of the variations in soil …
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Design, Fabrication, Testing of CNT Based ISFET and Characterization of Nano/Bio Materials Using AFM
… and Ion Selective Field Effect Transistor (ISFET) is designed and experimentally verified in order to develop the next generation ion concentration sensing system. Micro Electro-Mechanical System (MEMS) fabrication techniques, such as photolithography, diffusion, evaporation, lift-off, …
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Multiplexed label-free electrical detection of DNA amplification using field effect transistors
… ion-sensitive field effect transistors (ISFETs) detect the incorporation of nucleotides during LAMP by monitoring changes in the solution's acidity. Employing transistors as biosensors enables label-free detection of the reaction, simple multiplexing, and seamless integration with …
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A Real -Time Core Extraction System for Soil Nitrates
… and an ion selective field effect transistor (ISFET) was used to sense soil nitrates in real time. Results of the test indicate that nitrate extraction and washout occurred in the soil cores, and that peak, slope, and cumulative area parameters fitted to the nitrate extraction curve indicate …
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Micro electrochemical sensors and PCR systems: cellular and molecular tools for wine yeast analysis
… – Ion-Sensitive Field-Effect Transistor (ISFET), impedimetric and temperature sensors – for the real time evaluation of pH and cell settling of yeasts under batch culture conditions. The assessment of yeast performance and robustness has been focused on ethanol tolerance, as it is one …
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Open-Gate Junction Field-Effect Transistor for Chemical and Biomolecular Analysis
… 1970s with the advent of the ion-sensitive FET (ISFET). This innovation stemmed from Bergveld's pioneering work on metal-oxide semiconductor-based FETs, which were modified to create ISFETs. The core innovation behind ISFETs and BioFETs was the realization that replacing the metal gate of a …
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Multifunktionsfeldeffekttransistoren zur Strömungs-, Chemo- und Biosensorik in Lab on a Chip-Systemen
… eingestellt werden können. Grundlegende ISFET-Funktionalitäten wie die Empfindlichkeit auf Änderungen der Ionenstärke und des pH-Wertes werden nachgewiesen und ein ENFET-Glukosesensor realisiert. Zudem wird im Hinblick auf die Separation von Emulsionen der Nachweis erbracht, dass die …
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Nanoscale BioFETs for ultrasensitive pH and biomolecular detection
In the last decade, nanoscale field-effect transistor biosensors have proven to be powerful, ultra-sensitive, label-free electrical detectors of relevant molecules ranging from solution pH to proteins to nucleic acids. Such sensors are highly amenable to scale-up and mass production and are easily …
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Transistor-based biosensing: expanding the functionality of field effect transistors
… of sample manipulation. Since the development of ISFETs for biosensing applications, transistors have been used for detection of biological analytes. Chapter 5 extends this functionality to electrical detection of nucleic acid amplification with an on-chip quasi-reference electrode. This method …