Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"chemiresistor"”.
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Modeling and Data Analysis of Conductive Polymer Composite Sensors
… change of the sensor signals. In this work, 64 chemiresistors representing eight different carbon concentrations (8–60 vol.% carbon) were constructed by depositing thin films of a carbon black–polyisobutylene composite onto concentric spiral platinum electrodes on a silicon chip. The responses …
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Wirelessly addressable chemiresistors : carbon nanotube-based chemical sensors and dosimeters
… carbon nanotubes (CNTs), as the basis for chemiresistor research. Due to their high surface area, interwire junctions, and restricted conduction pathways, NWs give intrinsically high sensitivity and new mechanisms to transduce the binding or action of analytes. We explore principles for …
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Interactive Wireless Sensor for Remote Trace Detection and Recognition of Hazardous Gases
… that corresponds to a gas leak. It consists of a chemiresistor, such as an array of conductometric sensors, and a mechanism analyzing the data in real time. A smell-print is composed of many molecules which reaches receptor in the human nose. When a specific receptor receives a molecule, it sends …
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Harnessing inorganic coordination chemistry for novel sensing applications
… systems. In Chapter 1, we give an overview of chemiresistors in chemical detection with an emphasis on those based on carbon nanotubes. In Chapter 2, we employ metalloporphyrin complexes bearing late first-row transition metal centers in composites with single-walled carbon nanotubes (SWCNTs) …
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The development of multisensor arrays utilising conducting polymers.
… this format the films act as chemical resistors (chemiresistors) the current flow being influenced by the polymers' molecular electronics. Devices of this nature are potentially useful as sensors for analytes which cause the reversible modulation of the films' molecular electronics, leading to a …
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Complexing Carbon Nanomaterials and Reactive Metal Species for Selective Chemical Sensing and Tunable Catalysis
… and stabilize the Pd NPs dispersion. SWCNT-based chemiresistors and graphene field-effect transistors (GFETs) using these PAE-supported small Pd NPs are sensitive, selective, and robust sensory materials for hydrogen gas under ambient conditions. In Chapter 5, we describe chemiresistors based on …
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Growth and characterization of carbon nanostructures on zinc oxide nanostructures
… and to test their performances when used as chemiresistors to detect low doses (~ ppm) of polluting gases, like ammonia and acetone. Nanostructures of ZnO and carbon, including carbon nanotubes, exhibit on their own exceptional qualities, which can be enhanced when they are combined in …
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Highly-selective Chemiresistive Sensing and Analysis of Vapors Using Functionalized Nanotubes
<p>Specifically, the project involves the development of a diversified array of nanostructured gas-sensors comprised of selectively, novel surface-functionalized carbon nanotubes (for analyte selectivity by virtue of functionality). Harnessing carbon nanotubes with various electron withdrawing and …
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Field-structured chemiresistors : tunable sensors for chemical-switch arrays
… improved composite material for applications to chemiresistors, which are resistance-based sensors for volatile organic compounds. This material is a polymer composite containing Au-coated magnetic particles organized into electrically conducting pathways by magnetic fields. This improved …