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.
Results
Showing 1 to 20 of 61 for “"Single-Walled Carbon Nanotube"”.
-
Electric field quenching of single-walled carbon nanotube photoluminescence
… of an electric field on the photoluminescence of single-walled carbon nanotubes was investigated. Individual SWNTs embedded in polymeric film were deposited on microscope slides with electrodes. The fluorescence intensity and spectra of single semiconducting SWNTs were acquired. When SWNTs in …
-
Single-Walled Carbon Nanotube Arrays for High Frequency Applications
… presents a thorough analysis of semiconducting Single-Walled Carbon Nanotube-based devices, followed by a test structure fabrication and measurements.</p> <p>The analysis starts by developing an individual nanotube model, which is then generalized for many nanotubes and adding the parasitic …
-
Ultrafast Dynamics of Individual Air-Suspended Single-Walled Carbon Nanotube
… of the electronic and optical properties of single-walled carbon nanotubes (SWCNTs) will no doubt benefit future technological applications. Since the discovery of band gap photoluminescence from isolated semiconducting SWCNTs, significant progresses in studying the optical properties of …
-
Single-Walled Carbon Nanotube Response to Neutron and Gamma Irradiation
The unique electronic properties of single-walled carbon nanotubes (SWNTs) have sparked interest for using such nanomaterials in the nuclear industry and within radiation detection devices. To explore the application of SWNTs in the nuclear industry, it was first deemed necessary to study how SWNTs …
-
Photochemical studies of single-walled carbon nanotube ozonides and alpha-azoxy ketones
… problems in chemistry: studying properties of carbon nanotube ozonides and products of their decomposition and determining behavior of alpha-azoxy radicals. This work demonstrates that interaction of ozone with single-walled carbon nanotubes (SWNT) results in formation of 1,2,3-trioxolanes …
-
On the fabrication and utilization of vertically aligned single walled carbon nanotube structures
The inherent alignment in carbon nanotube "carpet" structures makes possible a variety of applications particularly for electronic device implementation. A method has been developed for transferring a carpet to a conductive substrate, to enable implementation for electronic devices. Methods for …
-
Wet-spinning of neat single-walled carbon nanotube fiber from 100+% sulfuric acid
Single-Walled Carbon Nanotubes (SWNT) have been found to have excellent solubility in super acids such as 100+% H2SO4, and chlorsulfonic acid. The solutions display liquid crystalline behavior at high concentrations in super acids. Traditional wet-spinning method has been applied to SWNTs to make …
-
Thin-film single-walled carbon nanotube transistors fabricated using mechanical meniscus aligned arrays
Single-walled carbon nanotubes (SWNTs) are novel carbon nanostructures with unique properties that have made them highly attractive materials for research in nanotechnology. Due to their exceptional electrical, mechanical, optical and structural properties, SWNTs have potential applications in the …
-
Functionalization and fabrication of single-walled carbon nanotube-based chemiresistors for sensory applications
… environment, and health. The fabrication of carbon-based sensors by printing, dip coating, drop casting, or drawing has advantages of being simple and low-cost without the need for highly specialized facilities. We have investigated the fabrication of sensors both by drop casting and drawing. …
-
Functionalized Single Walled Carbon Nanotube/Polymer Nanocomposite Membranes for Gas Separation and Desalination
Polymeric membranes for gas separation are limited in their performance by a trade-off between permeability and selectivity. New methods of design are necessary in making membranes, which can show both high permeability and selectivity. A mixed matrix membrane is one such particular design, which …
-
Fundamental and Applied Aspects of Electronics Based on Single -Walled Carbon Nanotube Thin Films
To improve the performances of SWNT thin film transistors (TFTs), we adopted high capacitance gate dielectrics to reduce the device operation voltage from ∼20 V to ∼1 V and, in related work, the hysteresis has been reduced from levels so large that the transistors could be used effectively …
-
Charge and Thermoelectric Transport in Semicrystalline Conjugated Polymers and Single-Walled Carbon Nanotube Networks
… conjugated polymer semiconductors and single-walled carbon nanotube (SWCNT) networks are promising candidates for wearable electronics, flexible optoelectronic devices and thermoelectric generators. In the past two decades the development of high-mobility donor-acceptor copolymers …
-
Sensitivity, selectivity, and stability of a palladium-loaded single-walled carbon nanotube methane gas sensor
… provide many advantages over electronic sensors. Single-walled carbon nanotubes (SWNT) can be used as optical sensors, as SWNTs emit fluorescence upon photoexcitation. The photoluminescent (PL) intensity upon excitation depends on the electronic structure of the SWNT. Here, SWNTs are loaded with …
-
Explorations of DNA-Single-Walled Carbon Nanotube Interactions to Develop Multiplexed Molecularly Specific Biosensors for Inflammation
… This dissertation advances the development of single-walled carbon nanotube (SWCNT) optical nanosensors capable of real-time, multiplexed, and molecularly specific cytokine detection through innovative use of single-stranded DNA (ssDNA) interfaces.</p> <p>First, an IL-6-specific DNA aptamer was …
-
The road to high performance single walled carbon nanotube thin film transistors: purification, densification, and integration
Single walled carbon nanotubes (SWNTs) have garnered substantial interest in the electronic materials research community due to their unparalleled intrinsic electrical properties. In particular, aligned arrays of SWNTs grown via chemical vapor deposition (CVD) on quartz enable device uniformity and …
-
Embedded Nanosensors for defect identification using flexible, optically transparent, deformation responsive wrinkled Single Walled Carbon Nanotube meshes
… loss of properties and damage to lives. Embedded single walled carbon nanotubes (SWCNTs) with exceptional mechanical, optical, and electrical properties can be utilized in overcoming these barriers. This type of NDT technique can monitor the potential for failure in concrete structures by allowing …
-
Approaches for alignment and purification of single walled carbon nanotube thin films and their application in device electronics
… horizontally aligned arrays of semiconducting single walled carbon nanotubes (SWNTs) represent one of the most promising materials for low cost, high performance electronic today. Over the years, a great deal of progress has been made towards this goal, however, to date, there are still key …
-
Modulation of Single-Walled Carbon Nanotube Fluorescence via Enzyme Reaction, Controlled Aggregation and Hydrogel Swelling Towards a Continuous Glucose Sensor
… of an implantable continuous analyte sensor. Single-walled carbon nanotubes (SWNT) have a tunable excitation and emission in the near-infrared (nIR) and do not photobleach. Additionally, their quasi one-dimensional nature renders them sensitive to molecular adsorption events. We explore …
-
Developments in Analytical Chemistry: Acoustically Levitated Drop Reactors for Enzyme Reaction Kinetics and Single-Walled Carbon Nanotube-Based Sensors for Detection of Toxic Organic Phosphonates
… organic compounds in the gas phase using single-walled carbon nanotubes. Experience gained in engineering, electronics, automation, and software development from the design and implementation of an acoustically levitated drop reactor was applied to the development of polymer-coated …
Page 1 of 4